diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
new file mode 100644
index 00000000000..a006fb092c8
--- /dev/null
+++ b/.github/workflows/main.yml
@@ -0,0 +1,191 @@
+name: main
+
+on:
+  push:
+    branches:
+      - 4.6.x
+    tags:
+      - "*"
+
+  pull_request:
+    branches:
+      - 4.6.x
+
+jobs:
+  build:
+    runs-on: ${{ matrix.os }}
+
+    strategy:
+      fail-fast: false
+      matrix:
+        name: [
+          "windows-py27",
+          "windows-py35",
+          "windows-py36",
+          "windows-py37",
+          "windows-py37-pluggy",
+          "windows-py38",
+
+          "ubuntu-py27-pluggy",
+          "ubuntu-py27-nobyte",
+          "ubuntu-py37",
+          "ubuntu-py37-pluggy",
+          "ubuntu-py37-pexpect-py37-twisted",
+          "ubuntu-py37-freeze",
+          "ubuntu-pypy",
+          "ubuntu-pypy3",
+
+          "macos-py27",
+          "macos-py38",
+
+        ]
+
+        include:
+          # Windows jobs
+          - name: "windows-py27"
+            python: "2.7"
+            os: windows-latest
+            tox_env: "py27-xdist"
+            use_coverage: true
+          - name: "windows-py35"
+            python: "3.5"
+            os: windows-latest
+            tox_env: "py35-xdist"
+            use_coverage: true
+          - name: "windows-py36"
+            python: "3.6"
+            os: windows-latest
+            tox_env: "py36-xdist"
+            use_coverage: true
+          - name: "windows-py37"
+            python: "3.7"
+            os: windows-latest
+            tox_env: "py37-twisted-numpy"
+            use_coverage: true
+          - name: "windows-py37-pluggy"
+            python: "3.7"
+            os: windows-latest
+            tox_env: "py37-pluggymaster-xdist"
+            use_coverage: true
+          - name: "windows-py38"
+            python: "3.8"
+            os: windows-latest
+            tox_env: "py38-xdist"
+            use_coverage: true
+
+          # Ubuntu jobs – find the rest of them in .travis.yml
+          - name: "ubuntu-py27-pluggy"
+            python: "2.7"
+            os: ubuntu-latest
+            tox_env: "py27-pluggymaster-xdist"
+            use_coverage: true
+          - name: "ubuntu-py27-nobyte"
+            python: "2.7"
+            os: ubuntu-latest
+            tox_env: "py27-nobyte-numpy-xdist"
+            use_coverage: true
+          - name: "ubuntu-py37"
+            python: "3.7"
+            os: ubuntu-latest
+            tox_env: "py37-lsof-numpy-xdist"
+            use_coverage: true
+          - name: "ubuntu-py37-pluggy"
+            python: "3.7"
+            os: ubuntu-latest
+            tox_env: "py37-pluggymaster-xdist"
+            use_coverage: true
+          - name: "ubuntu-py37-pexpect-py37-twisted"
+            python: "3.7"
+            os: ubuntu-latest
+            tox_env: "py37-pexpect,py37-twisted"
+            use_coverage: true
+          - name: "ubuntu-py37-freeze"
+            python: "3.7"
+            os: ubuntu-latest
+            tox_env: "py37-freeze"
+          - name: "ubuntu-pypy"
+            python: "pypy2"
+            os: ubuntu-latest
+            tox_env: "pypy-xdist"
+            use_coverage: true
+          - name: "ubuntu-pypy3"
+            python: "pypy3"
+            os: ubuntu-latest
+            tox_env: "pypy3-xdist"
+            use_coverage: true
+
+          # MacOS jobs
+          - name: "macos-py27"
+            python: "2.7"
+            os: macos-latest
+            tox_env: "py27-xdist"
+            use_coverage: true
+          - name: "macos-py38"
+            python: "3.8"
+            os: macos-latest
+            tox_env: "py38-xdist"
+            use_coverage: true
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: Set up Python ${{ matrix.python }} on ${{ matrix.os }}
+      uses: actions/setup-python@v1
+      with:
+        python-version: ${{ matrix.python }}
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install tox coverage
+    - name: Test without coverage
+      if: "! matrix.use_coverage"
+      run: "tox -e ${{ matrix.tox_env }}"
+
+    - name: Test with coverage
+      if: "matrix.use_coverage"
+      env:
+        _PYTEST_TOX_COVERAGE_RUN: "coverage run -m"
+        COVERAGE_PROCESS_START: ".coveragerc"
+        _PYTEST_TOX_EXTRA_DEP: "coverage-enable-subprocess"
+      run: "tox -vv -e ${{ matrix.tox_env }}"
+
+    - name: Prepare coverage token
+      if: (matrix.use_coverage && ( github.repository == 'pytest-dev/pytest' || github.event_name == 'pull_request' ))
+      run: |
+        python scripts/append_codecov_token.py
+    - name: Report coverage
+      if: (matrix.use_coverage)
+      env:
+        CODECOV_NAME: ${{ matrix.name }}
+      run: bash scripts/report-coverage.sh -F GHA,${{ runner.os }}
+
+  deploy:
+    if: github.event_name == 'push' && startsWith(github.event.ref, 'refs/tags') && github.repository == 'pytest-dev/pytest'
+
+    runs-on: ubuntu-latest
+
+    needs: [build]
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: Set up Python
+      uses: actions/setup-python@v1
+      with:
+        python-version: "3.7"
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install --upgrade wheel setuptools tox
+    - name: Build package
+      run: |
+        python setup.py sdist bdist_wheel
+    - name: Publish package to PyPI
+      uses: pypa/gh-action-pypi-publish@master
+      with:
+        user: __token__
+        password: ${{ secrets.pypi_token }}
+    - name: Publish GitHub release notes
+      env:
+        GH_RELEASE_NOTES_TOKEN: ${{ secrets.release_notes }}
+      run: |
+        sudo apt-get install pandoc
+        tox -e publish-gh-release-notes
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 34895e1a30f..3aee45c62c5 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,7 +1,7 @@
 exclude: doc/en/example/py2py3/test_py2.py
 repos:
--   repo: https://github.com/python/black
-    rev: 19.3b0
+-   repo: https://github.com/psf/black
+    rev: 19.10b0
     hooks:
     -   id: black
         args: [--safe, --quiet]
diff --git a/.travis.yml b/.travis.yml
index 9914800f808..d4f2d80483d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,121 +1,60 @@
 language: python
 dist: xenial
-stages:
-- baseline
-- name: test
-  if: repo = pytest-dev/pytest AND tag IS NOT present
-- name: deploy
-  if: repo = pytest-dev/pytest AND tag IS present
-python: '3.7'
+python: '3.7.4'
 cache: false
 
 env:
   global:
-    - PYTEST_ADDOPTS=-vv
+    - PYTEST_ADDOPTS="-vv --showlocals --durations=100 --exitfirst"
+    - PYTEST_COVERAGE=1
+
+# setuptools-scm needs all tags in order to obtain a proper version
+git:
+  depth: false
 
 install:
   - python -m pip install --upgrade --pre tox
 
 jobs:
   include:
-    # OSX tests - first (in test stage), since they are the slower ones.
-    - &test-macos
-      os: osx
-      osx_image: xcode10.1
-      language: generic
-      # Coverage for:
-      # - py2 with symlink in test_cmdline_python_package_symlink.
-      env: TOXENV=py27-xdist PYTEST_COVERAGE=1
-      before_install:
-        - python -V
-        - test $(python -c 'import sys; print("%d%d" % sys.version_info[0:2])') = 27
-    - <<: *test-macos
-      env: TOXENV=py37-pexpect,py37-xdist PYTEST_COVERAGE=1
-      before_install:
-        - which python3
-        - python3 -V
-        - ln -sfn "$(which python3)" /usr/local/bin/python
-        - python -V
-        - test $(python -c 'import sys; print("%d%d" % sys.version_info[0:2])') = 37
-
-    # Full run of latest (major) supported versions, without xdist.
-    - env: TOXENV=py27
+    # Coverage for:
+    # - TestArgComplete (linux only)
+    # - numpy
+    # - verbose=0
+    - stage: baseline
+      env: TOXENV=py27-xdist
       python: '2.7'
-    - env: TOXENV=py37
-      python: '3.7'
 
-    # Coverage tracking is slow with pypy, skip it.
-    - env: TOXENV=pypy-xdist
-      python: 'pypy'
-    - env: TOXENV=pypy3-xdist
-      python: 'pypy3'
+    - env: TOXENV=py38-xdist
+      python: '3.8'
+
+    - stage: tests
+    # - _pytest.unittest._handle_skip (via pexpect).
+      env: TOXENV=py27-pexpect,py27-twisted
+      python: '2.7'
 
-    - env: TOXENV=py34-xdist
-      python: '3.4'
     - env: TOXENV=py35-xdist
-      python: '3.5'
+      python: '3.5.9'
 
-    # Coverage for:
-    # - pytester's LsofFdLeakChecker
-    # - TestArgComplete (linux only)
-    # - numpy
-    # Empty PYTEST_ADDOPTS to run this non-verbose.
-    - env: TOXENV=py37-lsof-numpy-xdist PYTEST_COVERAGE=1 PYTEST_ADDOPTS=
+    - env: TOXENV=py36-xdist PYTEST_REORDER_TESTS=0
+      python: '3.6.9'
 
-    # Specialized factors for py27.
-    - env: TOXENV=py27-nobyte-numpy-xdist
-      python: '2.7'
-    - env: TOXENV=py27-pluggymaster-xdist
-      python: '2.7'
+    - env: TOXENV=py37-numpy-pexpect-twisted
+      python: '3.7.4'
 
-    # Specialized factors for py37.
-    # Coverage for:
     # - test_sys_breakpoint_interception (via pexpect).
-    - env: TOXENV=py37-pexpect,py37-twisted PYTEST_COVERAGE=1
-    - env: TOXENV=py37-pluggymaster-xdist
-    - env: TOXENV=py37-freeze
+    - env: TOXENV=py37-pexpect,py37-twisted
+      python: '3.7.4'
 
-    # Jobs only run via Travis cron jobs (currently daily).
-    - env: TOXENV=py38-xdist
-      python: '3.8-dev'
-      if: type = cron
+    # Run also non-verbosely, to gain coverage
+    - env: TOXENV=py38-xdist PYTEST_ADDOPTS=""
+      python: '3.8'
 
-    - stage: baseline
-    # Coverage for:
-    # - _pytest.unittest._handle_skip (via pexpect).
-      env: TOXENV=py27-pexpect,py27-twisted PYTEST_COVERAGE=1
-      python: '2.7'
-    # Use py36 here for faster baseline.
-    - env: TOXENV=py36-xdist
-      python: '3.6'
-    - env: TOXENV=linting,docs,doctesting PYTEST_COVERAGE=1
+    - env: TOXENV=linting,docs,doctesting
       cache:
         directories:
           - $HOME/.cache/pre-commit
 
-    - stage: deploy
-      python: '3.6'
-      install: pip install -U setuptools setuptools_scm
-      script: skip
-      deploy:
-        provider: pypi
-        user: nicoddemus
-        distributions: sdist bdist_wheel
-        skip_upload_docs: true
-        password:
-          secure: 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
-        on:
-          tags: true
-          repo: pytest-dev/pytest
-
-matrix:
-  allow_failures:
-    - python: '3.8-dev'
-      env: TOXENV=py38-xdist
-    # Temporary (https://github.com/pytest-dev/pytest/pull/5334).
-    - env: TOXENV=pypy3-xdist
-      python: 'pypy3'
-
 before_script:
   - |
     # Do not (re-)upload coverage with cron runs.
@@ -129,27 +68,13 @@ before_script:
       export _PYTEST_TOX_COVERAGE_RUN="coverage run -m"
       export _PYTEST_TOX_EXTRA_DEP=coverage-enable-subprocess
     fi
-
-script: tox --recreate
+script: env COLUMNS=120 python -m tox
 
 after_success:
   - |
     if [[ "$PYTEST_COVERAGE" = 1 ]]; then
-      set -e
-      # Add last TOXENV to $PATH.
-      PATH="$PWD/.tox/${TOXENV##*,}/bin:$PATH"
-      coverage combine
-      coverage xml
-      coverage report -m
-      bash <(curl -s https://codecov.io/bash) -Z -X gcov -X coveragepy -X search -X xcode -X gcovout -X fix -f coverage.xml -n $TOXENV-$TRAVIS_OS_NAME
+      env CODECOV_NAME="$TOXENV-$TRAVIS_OS_NAME" scripts/report-coverage.sh
     fi
-
-notifications:
-  irc:
-    channels:
-      - "chat.freenode.net#pytest"
-    on_success: change
-    on_failure: change
-    skip_join: true
-  email:
-    - pytest-commit@python.org
+branches:
+  only:
+    - 4.6.x
diff --git a/AUTHORS b/AUTHORS
index 0672d4abf6e..80fce539294 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -58,6 +58,7 @@ Christian Theunert
 Christian Tismer
 Christopher Gilling
 Christopher Dignam
+Claudio Madotto
 CrazyMerlyn
 Cyrus Maden
 Damian Skrzypczak
@@ -91,6 +92,7 @@ Evan Kepner
 Fabien Zarifian
 Fabio Zadrozny
 Feng Ma
+Fernando Mezzabotta Rey
 Florian Bruhin
 Floris Bruynooghe
 Gabriel Reis
@@ -135,6 +137,7 @@ Kale Kundert
 Katarzyna Jachim
 Katerina Koukiou
 Kevin Cox
+Kevin J. Foley
 Kodi B. Arfer
 Kostis Anagnostopoulos
 Kristoffer Nordström
diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 32267f4dd42..89437663f59 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -18,6 +18,201 @@ with advance notice in the **Deprecations** section of releases.
 
 .. towncrier release notes start
 
+pytest 4.6.11 (2020-06-04)
+==========================
+
+Bug Fixes
+---------
+
+- `#6334 <https://github.com/pytest-dev/pytest/issues/6334>`_: Fix summary entries appearing twice when ``f/F`` and ``s/S`` report chars were used at the same time in the ``-r`` command-line option (for example ``-rFf``).
+
+  The upper case variants were never documented and the preferred form should be the lower case.
+
+
+- `#7310 <https://github.com/pytest-dev/pytest/issues/7310>`_: Fix ``UnboundLocalError: local variable 'letter' referenced before
+  assignment`` in ``_pytest.terminal.pytest_report_teststatus()``
+  when plugins return report objects in an unconventional state.
+
+  This was making ``pytest_report_teststatus()`` skip
+  entering if-block branches that declare the ``letter`` variable.
+
+  The fix was to set the initial value of the ``letter`` before
+  the if-block cascade so that it always has a value.
+
+
+pytest 4.6.10 (2020-05-08)
+==========================
+
+Features
+--------
+
+- `#6870 <https://github.com/pytest-dev/pytest/issues/6870>`_: New ``Config.invocation_args`` attribute containing the unchanged arguments passed to ``pytest.main()``.
+
+  Remark: while this is technically a new feature and according to our `policy <https://docs.pytest.org/en/latest/py27-py34-deprecation.html#what-goes-into-4-6-x-releases>`_ it should not have been backported, we have opened an exception in this particular case because it fixes a serious interaction with ``pytest-xdist``, so it can also be considered a bugfix.
+
+Trivial/Internal Changes
+------------------------
+
+- `#6404 <https://github.com/pytest-dev/pytest/issues/6404>`_: Remove usage of ``parser`` module, deprecated in Python 3.9.
+
+
+pytest 4.6.9 (2020-01-04)
+=========================
+
+Bug Fixes
+---------
+
+- `#6301 <https://github.com/pytest-dev/pytest/issues/6301>`_: Fix assertion rewriting for egg-based distributions and ``editable`` installs (``pip install --editable``).
+
+
+pytest 4.6.8 (2019-12-19)
+=========================
+
+Features
+--------
+
+- `#5471 <https://github.com/pytest-dev/pytest/issues/5471>`_: JUnit XML now includes a timestamp and hostname in the testsuite tag.
+
+
+
+Bug Fixes
+---------
+
+- `#5430 <https://github.com/pytest-dev/pytest/issues/5430>`_: junitxml: Logs for failed test are now passed to junit report in case the test fails during call phase.
+
+
+
+Trivial/Internal Changes
+------------------------
+
+- `#6345 <https://github.com/pytest-dev/pytest/issues/6345>`_: Pin ``colorama`` to ``0.4.1`` only for Python 3.4 so newer Python versions can still receive colorama updates.
+
+
+pytest 4.6.7 (2019-12-05)
+=========================
+
+Bug Fixes
+---------
+
+- `#5477 <https://github.com/pytest-dev/pytest/issues/5477>`_: The XML file produced by ``--junitxml`` now correctly contain a ``<testsuites>`` root element.
+
+
+- `#6044 <https://github.com/pytest-dev/pytest/issues/6044>`_: Properly ignore ``FileNotFoundError`` (``OSError.errno == NOENT`` in Python 2) exceptions when trying to remove old temporary directories,
+  for instance when multiple processes try to remove the same directory (common with ``pytest-xdist``
+  for example).
+
+
+pytest 4.6.6 (2019-10-11)
+=========================
+
+Bug Fixes
+---------
+
+- `#5523 <https://github.com/pytest-dev/pytest/issues/5523>`_: Fixed using multiple short options together in the command-line (for example ``-vs``) in Python 3.8+.
+
+
+- `#5537 <https://github.com/pytest-dev/pytest/issues/5537>`_: Replace ``importlib_metadata`` backport with ``importlib.metadata`` from the
+  standard library on Python 3.8+.
+
+
+- `#5806 <https://github.com/pytest-dev/pytest/issues/5806>`_: Fix "lexer" being used when uploading to bpaste.net from ``--pastebin`` to "text".
+
+
+- `#5902 <https://github.com/pytest-dev/pytest/issues/5902>`_: Fix warnings about deprecated ``cmp`` attribute in ``attrs>=19.2``.
+
+
+
+Trivial/Internal Changes
+------------------------
+
+- `#5801 <https://github.com/pytest-dev/pytest/issues/5801>`_: Fixes python version checks (detected by ``flake8-2020``) in case python4 becomes a thing.
+
+
+pytest 4.6.5 (2019-08-05)
+=========================
+
+Bug Fixes
+---------
+
+- `#4344 <https://github.com/pytest-dev/pytest/issues/4344>`_: Fix RuntimeError/StopIteration when trying to collect package with "__init__.py" only.
+
+
+- `#5478 <https://github.com/pytest-dev/pytest/issues/5478>`_: Fix encode error when using unicode strings in exceptions with ``pytest.raises``.
+
+
+- `#5524 <https://github.com/pytest-dev/pytest/issues/5524>`_: Fix issue where ``tmp_path`` and ``tmpdir`` would not remove directories containing files marked as read-only,
+  which could lead to pytest crashing when executed a second time with the ``--basetemp`` option.
+
+
+- `#5547 <https://github.com/pytest-dev/pytest/issues/5547>`_: ``--step-wise`` now handles ``xfail(strict=True)`` markers properly.
+
+
+- `#5650 <https://github.com/pytest-dev/pytest/issues/5650>`_: Improved output when parsing an ini configuration file fails.
+
+
+pytest 4.6.4 (2019-06-28)
+=========================
+
+Bug Fixes
+---------
+
+- `#5404 <https://github.com/pytest-dev/pytest/issues/5404>`_: Emit a warning when attempting to unwrap a broken object raises an exception,
+  for easier debugging (`#5080 <https://github.com/pytest-dev/pytest/issues/5080>`__).
+
+
+- `#5444 <https://github.com/pytest-dev/pytest/issues/5444>`_: Fix ``--stepwise`` mode when the first file passed on the command-line fails to collect.
+
+
+- `#5482 <https://github.com/pytest-dev/pytest/issues/5482>`_: Fix bug introduced in 4.6.0 causing collection errors when passing
+  more than 2 positional arguments to ``pytest.mark.parametrize``.
+
+
+- `#5505 <https://github.com/pytest-dev/pytest/issues/5505>`_: Fix crash when discovery fails while using ``-p no:terminal``.
+
+
+pytest 4.6.3 (2019-06-11)
+=========================
+
+Bug Fixes
+---------
+
+- `#5383 <https://github.com/pytest-dev/pytest/issues/5383>`_: ``-q`` has again an impact on the style of the collected items
+  (``--collect-only``) when ``--log-cli-level`` is used.
+
+
+- `#5389 <https://github.com/pytest-dev/pytest/issues/5389>`_: Fix regressions of `#5063 <https://github.com/pytest-dev/pytest/pull/5063>`__ for ``importlib_metadata.PathDistribution`` which have their ``files`` attribute being ``None``.
+
+
+- `#5390 <https://github.com/pytest-dev/pytest/issues/5390>`_: Fix regression where the ``obj`` attribute of ``TestCase`` items was no longer bound to methods.
+
+
+pytest 4.6.2 (2019-06-03)
+=========================
+
+Bug Fixes
+---------
+
+- `#5370 <https://github.com/pytest-dev/pytest/issues/5370>`_: Revert unrolling of ``all()`` to fix ``NameError`` on nested comprehensions.
+
+
+- `#5371 <https://github.com/pytest-dev/pytest/issues/5371>`_: Revert unrolling of ``all()`` to fix incorrect handling of generators with ``if``.
+
+
+- `#5372 <https://github.com/pytest-dev/pytest/issues/5372>`_: Revert unrolling of ``all()`` to fix incorrect assertion when using ``all()`` in an expression.
+
+
+pytest 4.6.1 (2019-06-02)
+=========================
+
+Bug Fixes
+---------
+
+- `#5354 <https://github.com/pytest-dev/pytest/issues/5354>`_: Fix ``pytest.mark.parametrize`` when the argvalues is an iterator.
+
+
+- `#5358 <https://github.com/pytest-dev/pytest/issues/5358>`_: Fix assertion rewriting of ``all()`` calls to deal with non-generators.
+
+
 pytest 4.6.0 (2019-05-31)
 =========================
 
diff --git a/LICENSE b/LICENSE
index 477af2d2e45..d14fb7ff4b3 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2004-2019 Holger Krekel and others
+Copyright (c) 2004-2020 Holger Krekel and others
 
 Permission is hereby granted, free of charge, to any person obtaining a copy of
 this software and associated documentation files (the "Software"), to deal in
diff --git a/README.rst b/README.rst
index 44fa8ac728d..69408978703 100644
--- a/README.rst
+++ b/README.rst
@@ -131,7 +131,7 @@ Tidelift will coordinate the fix and disclosure.
 License
 -------
 
-Copyright Holger Krekel and others, 2004-2019.
+Copyright Holger Krekel and others, 2004-2020.
 
 Distributed under the terms of the `MIT`_ license, pytest is free and open source software.
 
diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index 8e50486de55..5184610fd18 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -48,12 +48,6 @@ jobs:
       # pypy3:
       #   python.version: 'pypy3'
       #   tox.env: 'pypy3'
-      py34-xdist:
-        python.version: '3.4'
-        tox.env: 'py34-xdist'
-        # Coverage for:
-        # - _pytest.compat._bytes_to_ascii
-        PYTEST_COVERAGE: '1'
       py35-xdist:
         python.version: '3.5'
         tox.env: 'py35-xdist'
@@ -91,7 +85,7 @@ jobs:
     condition: eq(variables['python.needs_vc'], True)
     displayName: 'Install VC for py27'
 
-  - script: python -m pip install --upgrade pip && python -m pip install tox
+  - script: python -m pip install tox
     displayName: 'Install tox'
 
   - script: |
diff --git a/codecov.yml b/codecov.yml
new file mode 100644
index 00000000000..a0a308588e2
--- /dev/null
+++ b/codecov.yml
@@ -0,0 +1,7 @@
+coverage:
+  status:
+    project: true
+    patch: true
+    changes: true
+
+comment: off
diff --git a/doc/en/announce/index.rst b/doc/en/announce/index.rst
index fa53441ce59..74ad0285509 100644
--- a/doc/en/announce/index.rst
+++ b/doc/en/announce/index.rst
@@ -6,6 +6,17 @@ Release announcements
    :maxdepth: 2
 
 
+   release-4.6.11
+   release-4.6.10
+   release-4.6.9
+   release-4.6.8
+   release-4.6.7
+   release-4.6.6
+   release-4.6.5
+   release-4.6.4
+   release-4.6.3
+   release-4.6.2
+   release-4.6.1
    release-4.6.0
    release-4.5.0
    release-4.4.2
diff --git a/doc/en/announce/release-4.6.1.rst b/doc/en/announce/release-4.6.1.rst
new file mode 100644
index 00000000000..78d017544d2
--- /dev/null
+++ b/doc/en/announce/release-4.6.1.rst
@@ -0,0 +1,19 @@
+pytest-4.6.1
+=======================================
+
+pytest 4.6.1 has just been released to PyPI.
+
+This is a bug-fix release, being a drop-in replacement. To upgrade::
+
+  pip install --upgrade pytest
+
+The full changelog is available at https://docs.pytest.org/en/latest/changelog.html.
+
+Thanks to all who contributed to this release, among them:
+
+* Anthony Sottile
+* Bruno Oliveira
+
+
+Happy testing,
+The pytest Development Team
diff --git a/doc/en/announce/release-4.6.10.rst b/doc/en/announce/release-4.6.10.rst
new file mode 100644
index 00000000000..57938b8751a
--- /dev/null
+++ b/doc/en/announce/release-4.6.10.rst
@@ -0,0 +1,20 @@
+pytest-4.6.10
+=======================================
+
+pytest 4.6.10 has just been released to PyPI.
+
+This is a bug-fix release, being a drop-in replacement. To upgrade::
+
+  pip install --upgrade pytest
+
+The full changelog is available at https://docs.pytest.org/en/latest/changelog.html.
+
+Thanks to all who contributed to this release, among them:
+
+* Anthony Sottile
+* Bruno Oliveira
+* Fernando Mez
+
+
+Happy testing,
+The pytest Development Team
diff --git a/doc/en/announce/release-4.6.11.rst b/doc/en/announce/release-4.6.11.rst
new file mode 100644
index 00000000000..276584bdf52
--- /dev/null
+++ b/doc/en/announce/release-4.6.11.rst
@@ -0,0 +1,20 @@
+pytest-4.6.11
+=======================================
+
+pytest 4.6.11 has just been released to PyPI.
+
+This is a bug-fix release, being a drop-in replacement. To upgrade::
+
+  pip install --upgrade pytest
+
+The full changelog is available at https://docs.pytest.org/en/latest/changelog.html.
+
+Thanks to all who contributed to this release, among them:
+
+* Anthony Sottile
+* Bruno Oliveira
+* Sviatoslav Sydorenko
+
+
+Happy testing,
+The pytest Development Team
diff --git a/doc/en/announce/release-4.6.2.rst b/doc/en/announce/release-4.6.2.rst
new file mode 100644
index 00000000000..8526579b9e7
--- /dev/null
+++ b/doc/en/announce/release-4.6.2.rst
@@ -0,0 +1,18 @@
+pytest-4.6.2
+=======================================
+
+pytest 4.6.2 has just been released to PyPI.
+
+This is a bug-fix release, being a drop-in replacement. To upgrade::
+
+  pip install --upgrade pytest
+
+The full changelog is available at https://docs.pytest.org/en/latest/changelog.html.
+
+Thanks to all who contributed to this release, among them:
+
+* Anthony Sottile
+
+
+Happy testing,
+The pytest Development Team
diff --git a/doc/en/announce/release-4.6.3.rst b/doc/en/announce/release-4.6.3.rst
new file mode 100644
index 00000000000..0bfb355a15a
--- /dev/null
+++ b/doc/en/announce/release-4.6.3.rst
@@ -0,0 +1,21 @@
+pytest-4.6.3
+=======================================
+
+pytest 4.6.3 has just been released to PyPI.
+
+This is a bug-fix release, being a drop-in replacement. To upgrade::
+
+  pip install --upgrade pytest
+
+The full changelog is available at https://docs.pytest.org/en/latest/changelog.html.
+
+Thanks to all who contributed to this release, among them:
+
+* Anthony Sottile
+* Bruno Oliveira
+* Daniel Hahler
+* Dirk Thomas
+
+
+Happy testing,
+The pytest Development Team
diff --git a/doc/en/announce/release-4.6.4.rst b/doc/en/announce/release-4.6.4.rst
new file mode 100644
index 00000000000..7b35ed4f0d4
--- /dev/null
+++ b/doc/en/announce/release-4.6.4.rst
@@ -0,0 +1,22 @@
+pytest-4.6.4
+=======================================
+
+pytest 4.6.4 has just been released to PyPI.
+
+This is a bug-fix release, being a drop-in replacement. To upgrade::
+
+  pip install --upgrade pytest
+
+The full changelog is available at https://docs.pytest.org/en/latest/changelog.html.
+
+Thanks to all who contributed to this release, among them:
+
+* Anthony Sottile
+* Bruno Oliveira
+* Daniel Hahler
+* Thomas Grainger
+* Zac Hatfield-Dodds
+
+
+Happy testing,
+The pytest Development Team
diff --git a/doc/en/announce/release-4.6.5.rst b/doc/en/announce/release-4.6.5.rst
new file mode 100644
index 00000000000..6998d4e4c5f
--- /dev/null
+++ b/doc/en/announce/release-4.6.5.rst
@@ -0,0 +1,21 @@
+pytest-4.6.5
+=======================================
+
+pytest 4.6.5 has just been released to PyPI.
+
+This is a bug-fix release, being a drop-in replacement. To upgrade::
+
+  pip install --upgrade pytest
+
+The full changelog is available at https://docs.pytest.org/en/latest/changelog.html.
+
+Thanks to all who contributed to this release, among them:
+
+* Anthony Sottile
+* Bruno Oliveira
+* Daniel Hahler
+* Thomas Grainger
+
+
+Happy testing,
+The pytest Development Team
diff --git a/doc/en/announce/release-4.6.6.rst b/doc/en/announce/release-4.6.6.rst
new file mode 100644
index 00000000000..c47a31695b2
--- /dev/null
+++ b/doc/en/announce/release-4.6.6.rst
@@ -0,0 +1,20 @@
+pytest-4.6.6
+=======================================
+
+pytest 4.6.6 has just been released to PyPI.
+
+This is a bug-fix release, being a drop-in replacement. To upgrade::
+
+  pip install --upgrade pytest
+
+The full changelog is available at https://docs.pytest.org/en/latest/changelog.html.
+
+Thanks to all who contributed to this release, among them:
+
+* Anthony Sottile
+* Bruno Oliveira
+* Michael Goerz
+
+
+Happy testing,
+The pytest Development Team
diff --git a/doc/en/announce/release-4.6.7.rst b/doc/en/announce/release-4.6.7.rst
new file mode 100644
index 00000000000..0e6cf6a950a
--- /dev/null
+++ b/doc/en/announce/release-4.6.7.rst
@@ -0,0 +1,19 @@
+pytest-4.6.7
+=======================================
+
+pytest 4.6.7 has just been released to PyPI.
+
+This is a bug-fix release, being a drop-in replacement. To upgrade::
+
+  pip install --upgrade pytest
+
+The full changelog is available at https://docs.pytest.org/en/latest/changelog.html.
+
+Thanks to all who contributed to this release, among them:
+
+* Bruno Oliveira
+* Daniel Hahler
+
+
+Happy testing,
+The pytest Development Team
diff --git a/doc/en/announce/release-4.6.8.rst b/doc/en/announce/release-4.6.8.rst
new file mode 100644
index 00000000000..3c04e5dbe9b
--- /dev/null
+++ b/doc/en/announce/release-4.6.8.rst
@@ -0,0 +1,20 @@
+pytest-4.6.8
+=======================================
+
+pytest 4.6.8 has just been released to PyPI.
+
+This is a bug-fix release, being a drop-in replacement. To upgrade::
+
+  pip install --upgrade pytest
+
+The full changelog is available at https://docs.pytest.org/en/latest/changelog.html.
+
+Thanks to all who contributed to this release, among them:
+
+* Anthony Sottile
+* Bruno Oliveira
+* Ryan Mast
+
+
+Happy testing,
+The pytest Development Team
diff --git a/doc/en/announce/release-4.6.9.rst b/doc/en/announce/release-4.6.9.rst
new file mode 100644
index 00000000000..ae0478c52d9
--- /dev/null
+++ b/doc/en/announce/release-4.6.9.rst
@@ -0,0 +1,21 @@
+pytest-4.6.9
+=======================================
+
+pytest 4.6.9 has just been released to PyPI.
+
+This is a bug-fix release, being a drop-in replacement. To upgrade::
+
+  pip install --upgrade pytest
+
+The full changelog is available at https://docs.pytest.org/en/latest/changelog.html.
+
+Thanks to all who contributed to this release, among them:
+
+* Anthony Sottile
+* Bruno Oliveira
+* Felix Yan
+* Hugo
+
+
+Happy testing,
+The pytest Development Team
diff --git a/doc/en/conf.py b/doc/en/conf.py
index 5daa15a069e..39ba5e4f854 100644
--- a/doc/en/conf.py
+++ b/doc/en/conf.py
@@ -65,7 +65,7 @@
 # General information about the project.
 project = u"pytest"
 year = datetime.datetime.utcnow().year
-copyright = u"2015–2019 , holger krekel and pytest-dev team"
+copyright = u"2015–2020, holger krekel and pytest-dev team"
 
 
 # The language for content autogenerated by Sphinx. Refer to documentation
@@ -275,7 +275,7 @@
 epub_title = u"pytest"
 epub_author = u"holger krekel at merlinux eu"
 epub_publisher = u"holger krekel at merlinux eu"
-epub_copyright = u"2013, holger krekel et alii"
+epub_copyright = u"2013-2020, holger krekel et alii"
 
 # The language of the text. It defaults to the language option
 # or en if the language is not set.
diff --git a/doc/en/example/parametrize.rst b/doc/en/example/parametrize.rst
index ef792afe7b6..2ab5e3ab10c 100644
--- a/doc/en/example/parametrize.rst
+++ b/doc/en/example/parametrize.rst
@@ -434,10 +434,11 @@ Running it results in some skips if we don't have all the python interpreters in
 .. code-block:: pytest
 
    . $ pytest -rs -q multipython.py
-   ...sss...sssssssss...sss...                                          [100%]
+   ...ssssssssssssssssssssssss                                          [100%]
    ========================= short test summary info ==========================
-   SKIPPED [15] $REGENDOC_TMPDIR/CWD/multipython.py:31: 'python3.4' not found
-   12 passed, 15 skipped in 0.12 seconds
+   SKIPPED [12] $REGENDOC_TMPDIR/CWD/multipython.py:31: 'python3.4' not found
+   SKIPPED [12] $REGENDOC_TMPDIR/CWD/multipython.py:31: 'python3.5' not found
+   3 passed, 24 skipped in 0.12 seconds
 
 Indirect parametrization of optional implementations/imports
 --------------------------------------------------------------------
diff --git a/doc/en/example/reportingdemo.rst b/doc/en/example/reportingdemo.rst
index 928c365cafc..d00c9836265 100644
--- a/doc/en/example/reportingdemo.rst
+++ b/doc/en/example/reportingdemo.rst
@@ -436,7 +436,7 @@ Here is a nice run of several failures and how ``pytest`` presents things:
             items = [1, 2, 3]
             print("items is %r" % items)
     >       a, b = items.pop()
-    E       TypeError: 'int' object is not iterable
+    E       TypeError: cannot unpack non-iterable int object
 
     failure_demo.py:182: TypeError
     --------------------------- Captured stdout call ---------------------------
@@ -515,7 +515,7 @@ Here is a nice run of several failures and how ``pytest`` presents things:
         def test_z2_type_error(self):
             items = 3
     >       a, b = items
-    E       TypeError: 'int' object is not iterable
+    E       TypeError: cannot unpack non-iterable int object
 
     failure_demo.py:222: TypeError
     ______________________ TestMoreErrors.test_startswith ______________________
diff --git a/doc/en/example/simple.rst b/doc/en/example/simple.rst
index 140f4b840f1..1dee981be77 100644
--- a/doc/en/example/simple.rst
+++ b/doc/en/example/simple.rst
@@ -440,7 +440,7 @@ Now we can profile which test functions execute the slowest:
     test_some_are_slow.py ...                                            [100%]
 
     ========================= slowest 3 test durations =========================
-    0.30s call     test_some_are_slow.py::test_funcslow2
+    0.31s call     test_some_are_slow.py::test_funcslow2
     0.20s call     test_some_are_slow.py::test_funcslow1
     0.10s call     test_some_are_slow.py::test_funcfast
     ========================= 3 passed in 0.12 seconds =========================
diff --git a/doc/en/getting-started.rst b/doc/en/getting-started.rst
index d6c62cbe8c0..882385b2960 100644
--- a/doc/en/getting-started.rst
+++ b/doc/en/getting-started.rst
@@ -28,7 +28,7 @@ Install ``pytest``
 .. code-block:: bash
 
     $ pytest --version
-    This is pytest version 4.x.y, imported from $PYTHON_PREFIX/lib/python3.6/site-packages/pytest.py
+    This is pytest version 4.x.y, imported from $PYTHON_PREFIX/lib/python3.7/site-packages/pytest.py
 
 .. _`simpletest`:
 
diff --git a/doc/en/index.rst b/doc/en/index.rst
index 3ace95effe6..edcbbeb84e7 100644
--- a/doc/en/index.rst
+++ b/doc/en/index.rst
@@ -87,7 +87,7 @@ Consult the :ref:`Changelog <changelog>` page for fixes and enhancements of each
 License
 -------
 
-Copyright Holger Krekel and others, 2004-2017.
+Copyright Holger Krekel and others, 2004-2020.
 
 Distributed under the terms of the `MIT`_ license, pytest is free and open source software.
 
diff --git a/doc/en/license.rst b/doc/en/license.rst
index 5ee55cf96f8..c6c10bbf358 100644
--- a/doc/en/license.rst
+++ b/doc/en/license.rst
@@ -9,7 +9,7 @@ Distributed under the terms of the `MIT`_ license, pytest is free and open sourc
 
     The MIT License (MIT)
 
-    Copyright (c) 2004-2017 Holger Krekel and others
+    Copyright (c) 2004-2020 Holger Krekel and others
 
     Permission is hereby granted, free of charge, to any person obtaining a copy of
     this software and associated documentation files (the "Software"), to deal in
diff --git a/doc/en/py27-py34-deprecation.rst b/doc/en/py27-py34-deprecation.rst
index 95e96de0456..0ca97539c82 100644
--- a/doc/en/py27-py34-deprecation.rst
+++ b/doc/en/py27-py34-deprecation.rst
@@ -17,9 +17,9 @@ are available on PyPI.
 
 While pytest ``5.0`` will be the new mainstream and development version, until **January 2020**
 the pytest core team plans to make bug-fix releases of the pytest ``4.6`` series by
-back-porting patches to the ``4.6-maintenance`` branch that affect Python 2 users.
+back-porting patches to the ``4.6.x`` branch that affect Python 2 users.
 
-**After 2020**, the core team will no longer actively backport patches, but the ``4.6-maintenance``
+**After 2020**, the core team will no longer actively backport patches, but the ``4.6.x``
 branch will continue to exist so the community itself can contribute patches. The core team will
 be happy to accept those patches and make new ``4.6`` releases **until mid-2020**.
 
diff --git a/scripts/append_codecov_token.py b/scripts/append_codecov_token.py
new file mode 100644
index 00000000000..b3a82075fa1
--- /dev/null
+++ b/scripts/append_codecov_token.py
@@ -0,0 +1,35 @@
+# -*- coding: utf-8 -*-
+"""
+Appends the codecov token to the 'codecov.yml' file at the root of the repository.
+This is done by CI during PRs and builds on the pytest-dev repository so we can upload coverage, at least
+until codecov grows some native integration like it has with Travis and AppVeyor.
+See discussion in https://github.com/pytest-dev/pytest/pull/6441 for more information.
+"""
+import os.path
+from textwrap import dedent
+
+
+def main():
+    this_dir = os.path.dirname(__file__)
+    cov_file = os.path.join(this_dir, "..", "codecov.yml")
+
+    assert os.path.isfile(cov_file), "{cov_file} does not exist".format(
+        cov_file=cov_file
+    )
+
+    with open(cov_file, "a") as f:
+        # token from: https://codecov.io/gh/pytest-dev/pytest/settings
+        # use same URL to regenerate it if needed
+        text = dedent(
+            """
+            codecov:
+              token: "1eca3b1f-31a2-4fb8-a8c3-138b441b50a7"
+        """
+        )
+        f.write(text)
+
+    print("Token updated:", cov_file)
+
+
+if __name__ == "__main__":
+    main()
diff --git a/scripts/publish_gh_release_notes.py b/scripts/publish_gh_release_notes.py
new file mode 100644
index 00000000000..3ff946b58a3
--- /dev/null
+++ b/scripts/publish_gh_release_notes.py
@@ -0,0 +1,96 @@
+# -*- coding: utf-8 -*-
+"""
+Script used to publish GitHub release notes extracted from CHANGELOG.rst.
+
+This script is meant to be executed after a successful deployment in Travis.
+
+Uses the following environment variables:
+
+* GIT_TAG: the name of the tag of the current commit.
+* GH_RELEASE_NOTES_TOKEN: a personal access token with 'repo' permissions. It should be encrypted using:
+
+    $travis encrypt GH_RELEASE_NOTES_TOKEN=<token> -r pytest-dev/pytest
+
+  And the contents pasted in the ``deploy.env.secure`` section in the ``travis.yml`` file.
+
+The script also requires ``pandoc`` to be previously installed in the system.
+
+Requires Python3.6+.
+"""
+import os
+import re
+import sys
+from pathlib import Path
+
+import github3
+import pypandoc
+
+
+def publish_github_release(slug, token, tag_name, body):
+    github = github3.login(token=token)
+    owner, repo = slug.split("/")
+    repo = github.repository(owner, repo)
+    return repo.create_release(tag_name=tag_name, body=body)
+
+
+def parse_changelog(tag_name):
+    p = Path(__file__).parent.parent / "CHANGELOG.rst"
+    changelog_lines = p.read_text(encoding="UTF-8").splitlines()
+
+    title_regex = re.compile(r"pytest (\d\.\d+\.\d+) \(\d{4}-\d{2}-\d{2}\)")
+    consuming_version = False
+    version_lines = []
+    for line in changelog_lines:
+        m = title_regex.match(line)
+        if m:
+            # found the version we want: start to consume lines until we find the next version title
+            if m.group(1) == tag_name:
+                consuming_version = True
+            # found a new version title while parsing the version we want: break out
+            elif consuming_version:
+                break
+        if consuming_version:
+            version_lines.append(line)
+
+    return "\n".join(version_lines)
+
+
+def convert_rst_to_md(text):
+    return pypandoc.convert_text(text, "md", format="rst")
+
+
+def main(argv):
+    if len(argv) > 1:
+        tag_name = argv[1]
+    else:
+        tag_name = os.environ.get("TRAVIS_TAG")
+        if not tag_name:
+            print("tag_name not given and $TRAVIS_TAG not set", file=sys.stderr)
+            return 1
+
+    token = os.environ.get("GH_RELEASE_NOTES_TOKEN")
+    if not token:
+        print("GH_RELEASE_NOTES_TOKEN not set", file=sys.stderr)
+        return 1
+
+    slug = os.environ.get("TRAVIS_REPO_SLUG")
+    if not slug:
+        print("TRAVIS_REPO_SLUG not set", file=sys.stderr)
+        return 1
+
+    rst_body = parse_changelog(tag_name)
+    md_body = convert_rst_to_md(rst_body)
+    if not publish_github_release(slug, token, tag_name, md_body):
+        print("Could not publish release notes:", file=sys.stderr)
+        print(md_body, file=sys.stderr)
+        return 5
+
+    print()
+    print(f"Release notes for {tag_name} published successfully:")
+    print(f"https://github.com/{slug}/releases/tag/{tag_name}")
+    print()
+    return 0
+
+
+if __name__ == "__main__":
+    sys.exit(main(sys.argv))
diff --git a/scripts/report-coverage.sh b/scripts/report-coverage.sh
new file mode 100755
index 00000000000..fbcf20ca929
--- /dev/null
+++ b/scripts/report-coverage.sh
@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+
+set -e
+set -x
+
+if [ -z "$TOXENV" ]; then
+  python -m pip install coverage
+else
+  # Add last TOXENV to $PATH.
+  PATH="$PWD/.tox/${TOXENV##*,}/bin:$PATH"
+fi
+
+python -m coverage combine
+python -m coverage xml
+python -m coverage report -m
+# Set --connect-timeout to work around https://github.com/curl/curl/issues/4461
+curl -S -L --connect-timeout 5 --retry 6 -s https://codecov.io/bash -o codecov-upload.sh
+bash codecov-upload.sh -Z -X fix -f coverage.xml "$@"
diff --git a/setup.cfg b/setup.cfg
index 9d0aa332e94..368df1e1ac0 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -30,6 +30,8 @@ classifiers =
     Programming Language :: Python :: 3.5
     Programming Language :: Python :: 3.6
     Programming Language :: Python :: 3.7
+    Programming Language :: Python :: 3.8
+    Programming Language :: Python :: 3.9
 platforms = unix, linux, osx, cygwin, win32
 
 [options]
diff --git a/setup.py b/setup.py
index 18d32201caf..1053bce4a5a 100644
--- a/setup.py
+++ b/setup.py
@@ -13,9 +13,10 @@
     "atomicwrites>=1.0",
     'funcsigs>=1.0;python_version<"3.0"',
     'pathlib2>=2.2.0;python_version<"3.6"',
-    'colorama;sys_platform=="win32"',
+    'colorama<=0.4.1;sys_platform=="win32" and python_version=="3.4"',
+    'colorama;sys_platform=="win32" and python_version!="3.4"',
     "pluggy>=0.12,<1.0",
-    "importlib-metadata>=0.12",
+    'importlib-metadata>=0.12;python_version<"3.8"',
     "wcwidth",
 ]
 
diff --git a/src/_pytest/_code/code.py b/src/_pytest/_code/code.py
index 8c73ccc6adc..175d6fda01d 100644
--- a/src/_pytest/_code/code.py
+++ b/src/_pytest/_code/code.py
@@ -572,8 +572,13 @@ def match(self, regexp):
         raised.
         """
         __tracebackhide__ = True
-        if not re.search(regexp, str(self.value)):
-            assert 0, "Pattern '{!s}' not found in '{!s}'".format(regexp, self.value)
+        value = (
+            text_type(self.value) if isinstance(regexp, text_type) else str(self.value)
+        )
+        if not re.search(regexp, value):
+            raise AssertionError(
+                u"Pattern {!r} not found in {!r}".format(regexp, value)
+            )
         return True
 
 
diff --git a/src/_pytest/_code/source.py b/src/_pytest/_code/source.py
index c8a4b6adf38..b35e97b9cec 100644
--- a/src/_pytest/_code/source.py
+++ b/src/_pytest/_code/source.py
@@ -123,18 +123,13 @@ def isparseable(self, deindent=True):
         """ return True if source is parseable, heuristically
             deindenting it by default.
         """
-        from parser import suite as syntax_checker
-
         if deindent:
             source = str(self.deindent())
         else:
             source = str(self)
         try:
-            # compile(source+'\n', "x", "exec")
-            syntax_checker(source + "\n")
-        except KeyboardInterrupt:
-            raise
-        except Exception:
+            ast.parse(source)
+        except (SyntaxError, ValueError, TypeError):
             return False
         else:
             return True
diff --git a/src/_pytest/assertion/rewrite.py b/src/_pytest/assertion/rewrite.py
index 5e2c5397bb8..1c6161b212d 100644
--- a/src/_pytest/assertion/rewrite.py
+++ b/src/_pytest/assertion/rewrite.py
@@ -953,8 +953,6 @@ def visit_Call_35(self, call):
         """
         visit `ast.Call` nodes on Python3.5 and after
         """
-        if isinstance(call.func, ast.Name) and call.func.id == "all":
-            return self._visit_all(call)
         new_func, func_expl = self.visit(call.func)
         arg_expls = []
         new_args = []
@@ -978,27 +976,6 @@ def visit_Call_35(self, call):
         outer_expl = "%s\n{%s = %s\n}" % (res_expl, res_expl, expl)
         return res, outer_expl
 
-    def _visit_all(self, call):
-        """Special rewrite for the builtin all function, see #5062"""
-        if not isinstance(call.args[0], (ast.GeneratorExp, ast.ListComp)):
-            return
-        gen_exp = call.args[0]
-        assertion_module = ast.Module(
-            body=[ast.Assert(test=gen_exp.elt, lineno=1, msg="", col_offset=1)]
-        )
-        AssertionRewriter(module_path=None, config=None).run(assertion_module)
-        for_loop = ast.For(
-            iter=gen_exp.generators[0].iter,
-            target=gen_exp.generators[0].target,
-            body=assertion_module.body,
-            orelse=[],
-        )
-        self.statements.append(for_loop)
-        return (
-            ast.Num(n=1),
-            "",
-        )  # Return an empty expression, all the asserts are in the for_loop
-
     def visit_Starred(self, starred):
         # From Python 3.5, a Starred node can appear in a function call
         res, expl = self.visit(starred.value)
@@ -1009,8 +986,6 @@ def visit_Call_legacy(self, call):
         """
         visit `ast.Call nodes on 3.4 and below`
         """
-        if isinstance(call.func, ast.Name) and call.func.id == "all":
-            return self._visit_all(call)
         new_func, func_expl = self.visit(call.func)
         arg_expls = []
         new_args = []
diff --git a/src/_pytest/assertion/util.py b/src/_pytest/assertion/util.py
index 1fee64ce08d..c382f1c6091 100644
--- a/src/_pytest/assertion/util.py
+++ b/src/_pytest/assertion/util.py
@@ -12,6 +12,7 @@
 from ..compat import Sequence
 from _pytest import outcomes
 from _pytest._io.saferepr import saferepr
+from _pytest.compat import ATTRS_EQ_FIELD
 
 # The _reprcompare attribute on the util module is used by the new assertion
 # interpretation code and assertion rewriter to detect this plugin was
@@ -374,7 +375,9 @@ def _compare_eq_cls(left, right, verbose, type_fns):
         fields_to_check = [field for field, info in all_fields.items() if info.compare]
     elif isattrs(left):
         all_fields = left.__attrs_attrs__
-        fields_to_check = [field.name for field in all_fields if field.cmp]
+        fields_to_check = [
+            field.name for field in all_fields if getattr(field, ATTRS_EQ_FIELD)
+        ]
 
     same = []
     diff = []
diff --git a/src/_pytest/cacheprovider.py b/src/_pytest/cacheprovider.py
index 045248cb7c2..f5c55454849 100755
--- a/src/_pytest/cacheprovider.py
+++ b/src/_pytest/cacheprovider.py
@@ -21,7 +21,7 @@
 from .compat import _PY2 as PY2
 from .pathlib import Path
 from .pathlib import resolve_from_str
-from .pathlib import rmtree
+from .pathlib import rm_rf
 
 README_CONTENT = u"""\
 # pytest cache directory #
@@ -51,7 +51,7 @@ class Cache(object):
     def for_config(cls, config):
         cachedir = cls.cache_dir_from_config(config)
         if config.getoption("cacheclear") and cachedir.exists():
-            rmtree(cachedir, force=True)
+            rm_rf(cachedir)
             cachedir.mkdir()
         return cls(cachedir, config)
 
diff --git a/src/_pytest/compat.py b/src/_pytest/compat.py
index 7668c3a94c7..d0add530268 100644
--- a/src/_pytest/compat.py
+++ b/src/_pytest/compat.py
@@ -13,6 +13,7 @@
 import sys
 from contextlib import contextmanager
 
+import attr
 import py
 import six
 from six import text_type
@@ -61,6 +62,12 @@ def spec_from_file_location(*_, **__):
         return None
 
 
+if sys.version_info >= (3, 8):
+    from importlib import metadata as importlib_metadata  # noqa
+else:
+    import importlib_metadata  # noqa
+
+
 def _format_args(func):
     return str(signature(func))
 
@@ -377,7 +384,7 @@ def safe_str(v):
 else:
 
     def safe_str(v):
-        """returns v as string, converting to ascii if necessary"""
+        """returns v as string, converting to utf-8 if necessary"""
         try:
             return str(v)
         except UnicodeError:
@@ -406,8 +413,8 @@ def _setup_collect_fakemodule():
 
     pytest.collect = ModuleType("pytest.collect")
     pytest.collect.__all__ = []  # used for setns
-    for attr in COLLECT_FAKEMODULE_ATTRIBUTES:
-        setattr(pytest.collect, attr, getattr(pytest, attr))
+    for attribute in COLLECT_FAKEMODULE_ATTRIBUTES:
+        setattr(pytest.collect, attribute, getattr(pytest, attribute))
 
 
 if _PY2:
@@ -455,3 +462,9 @@ def dec(fn):
 
 else:
     from functools import lru_cache  # noqa: F401
+
+
+if getattr(attr, "__version_info__", ()) >= (19, 2):
+    ATTRS_EQ_FIELD = "eq"
+else:
+    ATTRS_EQ_FIELD = "cmp"
diff --git a/src/_pytest/config/__init__.py b/src/_pytest/config/__init__.py
index 7a5deb13f53..0737ff9d51c 100644
--- a/src/_pytest/config/__init__.py
+++ b/src/_pytest/config/__init__.py
@@ -13,7 +13,7 @@
 import types
 import warnings
 
-import importlib_metadata
+import attr
 import py
 import six
 from packaging.version import Version
@@ -31,10 +31,12 @@
 from _pytest import deprecated
 from _pytest._code import ExceptionInfo
 from _pytest._code import filter_traceback
+from _pytest.compat import importlib_metadata
 from _pytest.compat import lru_cache
 from _pytest.compat import safe_str
 from _pytest.outcomes import fail
 from _pytest.outcomes import Skipped
+from _pytest.pathlib import Path
 from _pytest.warning_types import PytestConfigWarning
 
 hookimpl = HookimplMarker("pytest")
@@ -116,13 +118,13 @@ def directory_arg(path, optname):
 
 
 # Plugins that cannot be disabled via "-p no:X" currently.
-essential_plugins = (  # fmt: off
+essential_plugins = (
     "mark",
     "main",
     "runner",
     "fixtures",
     "helpconfig",  # Provides -p.
-)  # fmt: on
+)
 
 default_plugins = essential_plugins + (
     "python",
@@ -154,10 +156,15 @@ def directory_arg(path, optname):
 builtin_plugins.add("pytester")
 
 
-def get_config(args=None):
+def get_config(args=None, plugins=None):
     # subsequent calls to main will create a fresh instance
     pluginmanager = PytestPluginManager()
-    config = Config(pluginmanager)
+    config = Config(
+        pluginmanager,
+        invocation_params=Config.InvocationParams(
+            args=args, plugins=plugins, dir=Path().resolve()
+        ),
+    )
 
     if args is not None:
         # Handle any "-p no:plugin" args.
@@ -190,7 +197,7 @@ def _prepareconfig(args=None, plugins=None):
         msg = "`args` parameter expected to be a list or tuple of strings, got: {!r} (type: {})"
         raise TypeError(msg.format(args, type(args)))
 
-    config = get_config(args)
+    config = get_config(args, plugins)
     pluginmanager = config.pluginmanager
     try:
         if plugins:
@@ -622,25 +629,116 @@ def __repr__(self):
 
 
 def _iter_rewritable_modules(package_files):
+    """
+    Given an iterable of file names in a source distribution, return the "names" that should
+    be marked for assertion rewrite (for example the package "pytest_mock/__init__.py" should
+    be added as "pytest_mock" in the assertion rewrite mechanism.
+
+    This function has to deal with dist-info based distributions and egg based distributions
+    (which are still very much in use for "editable" installs).
+
+    Here are the file names as seen in a dist-info based distribution:
+
+        pytest_mock/__init__.py
+        pytest_mock/_version.py
+        pytest_mock/plugin.py
+        pytest_mock.egg-info/PKG-INFO
+
+    Here are the file names as seen in an egg based distribution:
+
+        src/pytest_mock/__init__.py
+        src/pytest_mock/_version.py
+        src/pytest_mock/plugin.py
+        src/pytest_mock.egg-info/PKG-INFO
+        LICENSE
+        setup.py
+
+    We have to take in account those two distribution flavors in order to determine which
+    names should be considered for assertion rewriting.
+
+    More information:
+        https://github.com/pytest-dev/pytest-mock/issues/167
+    """
+    package_files = list(package_files)
+    seen_some = False
     for fn in package_files:
         is_simple_module = "/" not in fn and fn.endswith(".py")
         is_package = fn.count("/") == 1 and fn.endswith("__init__.py")
         if is_simple_module:
             module_name, _ = os.path.splitext(fn)
-            yield module_name
+            # we ignore "setup.py" at the root of the distribution
+            if module_name != "setup":
+                seen_some = True
+                yield module_name
         elif is_package:
             package_name = os.path.dirname(fn)
+            seen_some = True
             yield package_name
 
+    if not seen_some:
+        # at this point we did not find any packages or modules suitable for assertion
+        # rewriting, so we try again by stripping the first path component (to account for
+        # "src" based source trees for example)
+        # this approach lets us have the common case continue to be fast, as egg-distributions
+        # are rarer
+        new_package_files = []
+        for fn in package_files:
+            parts = fn.split("/")
+            new_fn = "/".join(parts[1:])
+            if new_fn:
+                new_package_files.append(new_fn)
+        if new_package_files:
+            for _module in _iter_rewritable_modules(new_package_files):
+                yield _module
+
 
 class Config(object):
-    """ access to configuration values, pluginmanager and plugin hooks.  """
+    """
+    Access to configuration values, pluginmanager and plugin hooks.
+
+    :ivar PytestPluginManager pluginmanager: the plugin manager handles plugin registration and hook invocation.
+
+    :ivar argparse.Namespace option: access to command line option as attributes.
+
+    :ivar InvocationParams invocation_params:
+
+        Object containing the parameters regarding the ``pytest.main``
+        invocation.
+        Contains the followinig read-only attributes:
+        * ``args``: list of command-line arguments as passed to ``pytest.main()``.
+        * ``plugins``: list of extra plugins, might be None
+        * ``dir``: directory where ``pytest.main()`` was invoked from.
+    """
+
+    @attr.s(frozen=True)
+    class InvocationParams(object):
+        """Holds parameters passed during ``pytest.main()``
+
+        .. note::
+
+            Currently the environment variable PYTEST_ADDOPTS is also handled by
+            pytest implicitly, not being part of the invocation.
+
+            Plugins accessing ``InvocationParams`` must be aware of that.
+        """
+
+        args = attr.ib()
+        plugins = attr.ib()
+        dir = attr.ib()
+
+    def __init__(self, pluginmanager, invocation_params=None, *args):
+        from .argparsing import Parser, FILE_OR_DIR
+
+        if invocation_params is None:
+            invocation_params = self.InvocationParams(
+                args=(), plugins=None, dir=Path().resolve()
+            )
 
-    def __init__(self, pluginmanager):
         #: access to command line option as attributes.
         #: (deprecated), use :py:func:`getoption() <_pytest.config.Config.getoption>` instead
         self.option = argparse.Namespace()
-        from .argparsing import Parser, FILE_OR_DIR
+
+        self.invocation_params = invocation_params
 
         _a = FILE_OR_DIR
         self._parser = Parser(
@@ -657,9 +755,13 @@ def __init__(self, pluginmanager):
         self._cleanup = []
         self.pluginmanager.register(self, "pytestconfig")
         self._configured = False
-        self.invocation_dir = py.path.local()
         self.hook.pytest_addoption.call_historic(kwargs=dict(parser=self._parser))
 
+    @property
+    def invocation_dir(self):
+        """Backward compatibility"""
+        return py.path.local(str(self.invocation_params.dir))
+
     def add_cleanup(self, func):
         """ Add a function to be called when the config object gets out of
         use (usually coninciding with pytest_unconfigure)."""
@@ -800,7 +902,7 @@ def _mark_plugins_for_rewrite(self, hook):
             str(file)
             for dist in importlib_metadata.distributions()
             if any(ep.group == "pytest11" for ep in dist.entry_points)
-            for file in dist.files
+            for file in dist.files or []
         )
 
         for name in _iter_rewritable_modules(package_files):
diff --git a/src/_pytest/config/findpaths.py b/src/_pytest/config/findpaths.py
index 3ece3bdc130..e6779b289bc 100644
--- a/src/_pytest/config/findpaths.py
+++ b/src/_pytest/config/findpaths.py
@@ -33,7 +33,11 @@ def getcfg(args, config=None):
             for inibasename in inibasenames:
                 p = base.join(inibasename)
                 if exists(p):
-                    iniconfig = py.iniconfig.IniConfig(p)
+                    try:
+                        iniconfig = py.iniconfig.IniConfig(p)
+                    except py.iniconfig.ParseError as exc:
+                        raise UsageError(str(exc))
+
                     if (
                         inibasename == "setup.cfg"
                         and "tool:pytest" in iniconfig.sections
diff --git a/src/_pytest/deprecated.py b/src/_pytest/deprecated.py
index 6283a840246..12394aca3f5 100644
--- a/src/_pytest/deprecated.py
+++ b/src/_pytest/deprecated.py
@@ -40,8 +40,8 @@
 RAISES_MESSAGE_PARAMETER = PytestDeprecationWarning(
     "The 'message' parameter is deprecated.\n"
     "(did you mean to use `match='some regex'` to check the exception message?)\n"
-    "Please comment on https://github.com/pytest-dev/pytest/issues/3974 "
-    "if you have concerns about removal of this parameter."
+    "Please see:\n"
+    "  https://docs.pytest.org/en/4.6-maintenance/deprecations.html#message-parameter-of-pytest-raises"
 )
 
 RESULT_LOG = PytestDeprecationWarning(
diff --git a/src/_pytest/doctest.py b/src/_pytest/doctest.py
index 95a80bb4fa2..659d24aeebc 100644
--- a/src/_pytest/doctest.py
+++ b/src/_pytest/doctest.py
@@ -8,6 +8,7 @@
 import platform
 import sys
 import traceback
+import warnings
 from contextlib import contextmanager
 
 import pytest
@@ -17,6 +18,7 @@
 from _pytest.compat import safe_getattr
 from _pytest.fixtures import FixtureRequest
 from _pytest.outcomes import Skipped
+from _pytest.warning_types import PytestWarning
 
 DOCTEST_REPORT_CHOICE_NONE = "none"
 DOCTEST_REPORT_CHOICE_CDIFF = "cdiff"
@@ -374,10 +376,18 @@ def _patch_unwrap_mock_aware():
     else:
 
         def _mock_aware_unwrap(obj, stop=None):
-            if stop is None:
-                return real_unwrap(obj, stop=_is_mocked)
-            else:
+            try:
+                if stop is None or stop is _is_mocked:
+                    return real_unwrap(obj, stop=_is_mocked)
                 return real_unwrap(obj, stop=lambda obj: _is_mocked(obj) or stop(obj))
+            except Exception as e:
+                warnings.warn(
+                    "Got %r when unwrapping %r.  This is usually caused "
+                    "by a violation of Python's object protocol; see e.g. "
+                    "https://github.com/pytest-dev/pytest/issues/5080" % (e, obj),
+                    PytestWarning,
+                )
+                raise
 
         inspect.unwrap = _mock_aware_unwrap
         try:
diff --git a/src/_pytest/junitxml.py b/src/_pytest/junitxml.py
index 3972113cbb0..853dcb77449 100644
--- a/src/_pytest/junitxml.py
+++ b/src/_pytest/junitxml.py
@@ -15,9 +15,11 @@
 
 import functools
 import os
+import platform
 import re
 import sys
 import time
+from datetime import datetime
 
 import py
 import six
@@ -595,6 +597,8 @@ def pytest_runtest_logreport(self, report):
             if report.when == "call":
                 reporter.append_failure(report)
                 self.open_reports.append(report)
+                if not self.log_passing_tests:
+                    reporter.write_captured_output(report)
             else:
                 reporter.append_error(report)
         elif report.skipped:
@@ -667,18 +671,19 @@ def pytest_sessionfinish(self):
         )
         logfile.write('<?xml version="1.0" encoding="utf-8"?>')
 
-        logfile.write(
-            Junit.testsuite(
-                self._get_global_properties_node(),
-                [x.to_xml() for x in self.node_reporters_ordered],
-                name=self.suite_name,
-                errors=self.stats["error"],
-                failures=self.stats["failure"],
-                skipped=self.stats["skipped"],
-                tests=numtests,
-                time="%.3f" % suite_time_delta,
-            ).unicode(indent=0)
+        suite_node = Junit.testsuite(
+            self._get_global_properties_node(),
+            [x.to_xml() for x in self.node_reporters_ordered],
+            name=self.suite_name,
+            errors=self.stats["error"],
+            failures=self.stats["failure"],
+            skipped=self.stats["skipped"],
+            tests=numtests,
+            time="%.3f" % suite_time_delta,
+            timestamp=datetime.fromtimestamp(self.suite_start_time).isoformat(),
+            hostname=platform.node(),
         )
+        logfile.write(Junit.testsuites([suite_node]).unicode(indent=0))
         logfile.close()
 
     def pytest_terminal_summary(self, terminalreporter):
diff --git a/src/_pytest/logging.py b/src/_pytest/logging.py
index 577a5407be0..2400737ee4e 100644
--- a/src/_pytest/logging.py
+++ b/src/_pytest/logging.py
@@ -424,10 +424,6 @@ def __init__(self, config):
         """
         self._config = config
 
-        # enable verbose output automatically if live logging is enabled
-        if self._log_cli_enabled() and config.getoption("verbose") < 1:
-            config.option.verbose = 1
-
         self.print_logs = get_option_ini(config, "log_print")
         self.formatter = self._create_formatter(
             get_option_ini(config, "log_format"),
@@ -644,6 +640,15 @@ def pytest_sessionstart(self):
     @pytest.hookimpl(hookwrapper=True)
     def pytest_runtestloop(self, session):
         """Runs all collected test items."""
+
+        if session.config.option.collectonly:
+            yield
+            return
+
+        if self._log_cli_enabled() and self._config.getoption("verbose") < 1:
+            # setting verbose flag is needed to avoid messy test progress output
+            self._config.option.verbose = 1
+
         with self.live_logs_context():
             if self.log_file_handler is not None:
                 with catching_logs(self.log_file_handler, level=self.log_file_level):
diff --git a/src/_pytest/main.py b/src/_pytest/main.py
index fa4d8d3d509..a9d310cb62d 100644
--- a/src/_pytest/main.py
+++ b/src/_pytest/main.py
@@ -621,7 +621,13 @@ def _collect(self, arg):
             # Module itself, so just use that. If this special case isn't taken, then all
             # the files in the package will be yielded.
             if argpath.basename == "__init__.py":
-                yield next(m[0].collect())
+                try:
+                    yield next(m[0].collect())
+                except StopIteration:
+                    # The package collects nothing with only an __init__.py
+                    # file in it, which gets ignored by the default
+                    # "python_files" option.
+                    pass
                 return
             for y in m:
                 yield y
diff --git a/src/_pytest/mark/structures.py b/src/_pytest/mark/structures.py
index 561ccc3f45d..0ccd8141dd9 100644
--- a/src/_pytest/mark/structures.py
+++ b/src/_pytest/mark/structures.py
@@ -8,6 +8,7 @@
 import six
 
 from ..compat import ascii_escaped
+from ..compat import ATTRS_EQ_FIELD
 from ..compat import getfslineno
 from ..compat import MappingMixin
 from ..compat import NOTSET
@@ -104,23 +105,24 @@ def extract_from(cls, parameterset, force_tuple=False):
             return cls(parameterset, marks=[], id=None)
 
     @staticmethod
-    def _parse_parametrize_args(argnames, argvalues, **_):
-        """It receives an ignored _ (kwargs) argument so this function can
-        take also calls from parametrize ignoring scope, indirect, and other
-        arguments..."""
+    def _parse_parametrize_args(argnames, argvalues, *args, **kwargs):
         if not isinstance(argnames, (tuple, list)):
             argnames = [x.strip() for x in argnames.split(",") if x.strip()]
             force_tuple = len(argnames) == 1
         else:
             force_tuple = False
-        parameters = [
+        return argnames, force_tuple
+
+    @staticmethod
+    def _parse_parametrize_parameters(argvalues, force_tuple):
+        return [
             ParameterSet.extract_from(x, force_tuple=force_tuple) for x in argvalues
         ]
-        return argnames, parameters
 
     @classmethod
     def _for_parametrize(cls, argnames, argvalues, func, config, function_definition):
-        argnames, parameters = cls._parse_parametrize_args(argnames, argvalues)
+        argnames, force_tuple = cls._parse_parametrize_args(argnames, argvalues)
+        parameters = cls._parse_parametrize_parameters(argvalues, force_tuple)
         del argvalues
 
         if parameters:
@@ -376,7 +378,8 @@ def __repr__(self):
         return "<NodeKeywords for node %s>" % (self.node,)
 
 
-@attr.s(cmp=False, hash=False)
+# mypy cannot find this overload, remove when on attrs>=19.2
+@attr.s(hash=False, **{ATTRS_EQ_FIELD: False})  # type: ignore
 class NodeMarkers(object):
     """
     internal structure for storing marks belonging to a node
diff --git a/src/_pytest/nodes.py b/src/_pytest/nodes.py
index 7342d960738..206e9ae163e 100644
--- a/src/_pytest/nodes.py
+++ b/src/_pytest/nodes.py
@@ -329,7 +329,7 @@ def repr_failure(self, excinfo):
 
         # Respect explicit tbstyle option, but default to "short"
         # (None._repr_failure_py defaults to "long" without "fulltrace" option).
-        tbstyle = self.config.getoption("tbstyle")
+        tbstyle = self.config.getoption("tbstyle", "auto")
         if tbstyle == "auto":
             tbstyle = "short"
 
diff --git a/src/_pytest/pastebin.py b/src/_pytest/pastebin.py
index 3f4171207a3..7a3e80231c2 100644
--- a/src/_pytest/pastebin.py
+++ b/src/_pytest/pastebin.py
@@ -77,11 +77,7 @@ def create_new_paste(contents):
         from urllib.request import urlopen
         from urllib.parse import urlencode
 
-    params = {
-        "code": contents,
-        "lexer": "python3" if sys.version_info[0] == 3 else "python",
-        "expiry": "1week",
-    }
+    params = {"code": contents, "lexer": "text", "expiry": "1week"}
     url = "https://bpaste.net"
     response = urlopen(url, data=urlencode(params).encode("ascii")).read()
     m = re.search(r'href="/raw/(\w+)"', response.decode("utf-8"))
diff --git a/src/_pytest/pathlib.py b/src/_pytest/pathlib.py
index 729c41797d9..42071f43104 100644
--- a/src/_pytest/pathlib.py
+++ b/src/_pytest/pathlib.py
@@ -1,4 +1,6 @@
 # -*- coding: utf-8 -*-
+from __future__ import absolute_import
+
 import atexit
 import errno
 import fnmatch
@@ -8,6 +10,8 @@
 import shutil
 import sys
 import uuid
+import warnings
+from functools import partial
 from functools import reduce
 from os.path import expanduser
 from os.path import expandvars
@@ -19,6 +23,7 @@
 from six.moves import map
 
 from .compat import PY36
+from _pytest.warning_types import PytestWarning
 
 if PY36:
     from pathlib import Path, PurePath
@@ -38,17 +43,72 @@ def ensure_reset_dir(path):
     ensures the given path is an empty directory
     """
     if path.exists():
-        rmtree(path, force=True)
+        rm_rf(path)
     path.mkdir()
 
 
-def rmtree(path, force=False):
-    if force:
-        # NOTE: ignore_errors might leave dead folders around.
-        #       Python needs a rm -rf as a followup.
-        shutil.rmtree(str(path), ignore_errors=True)
-    else:
-        shutil.rmtree(str(path))
+def on_rm_rf_error(func, path, exc, **kwargs):
+    """Handles known read-only errors during rmtree.
+
+    The returned value is used only by our own tests.
+    """
+    start_path = kwargs["start_path"]
+    exctype, excvalue = exc[:2]
+
+    # another process removed the file in the middle of the "rm_rf" (xdist for example)
+    # more context: https://github.com/pytest-dev/pytest/issues/5974#issuecomment-543799018
+    if isinstance(excvalue, OSError) and excvalue.errno == errno.ENOENT:
+        return False
+
+    if not isinstance(excvalue, OSError) or excvalue.errno not in (
+        errno.EACCES,
+        errno.EPERM,
+    ):
+        warnings.warn(
+            PytestWarning(
+                "(rm_rf) error removing {}\n{}: {}".format(path, exctype, excvalue)
+            )
+        )
+        return False
+
+    if func not in (os.rmdir, os.remove, os.unlink):
+        warnings.warn(
+            PytestWarning(
+                "(rm_rf) unknown function {} when removing {}:\n{}: {}".format(
+                    path, func, exctype, excvalue
+                )
+            )
+        )
+        return False
+
+    # Chmod + retry.
+    import stat
+
+    def chmod_rw(p):
+        mode = os.stat(p).st_mode
+        os.chmod(p, mode | stat.S_IRUSR | stat.S_IWUSR)
+
+    # For files, we need to recursively go upwards in the directories to
+    # ensure they all are also writable.
+    p = Path(path)
+    if p.is_file():
+        for parent in p.parents:
+            chmod_rw(str(parent))
+            # stop when we reach the original path passed to rm_rf
+            if parent == start_path:
+                break
+    chmod_rw(str(path))
+
+    func(path)
+    return True
+
+
+def rm_rf(path):
+    """Remove the path contents recursively, even if some elements
+    are read-only.
+    """
+    onerror = partial(on_rm_rf_error, start_path=path)
+    shutil.rmtree(str(path), onerror=onerror)
 
 
 def find_prefixed(root, prefix):
@@ -186,7 +246,7 @@ def maybe_delete_a_numbered_dir(path):
 
         garbage = parent.joinpath("garbage-{}".format(uuid.uuid4()))
         path.rename(garbage)
-        rmtree(garbage, force=True)
+        rm_rf(garbage)
     except (OSError, EnvironmentError):
         #  known races:
         #  * other process did a cleanup at the same time
diff --git a/src/_pytest/pytester.py b/src/_pytest/pytester.py
index 605451630a6..f1d739c9917 100644
--- a/src/_pytest/pytester.py
+++ b/src/_pytest/pytester.py
@@ -1124,7 +1124,7 @@ def handle_timeout():
 
             if timeout is None:
                 ret = popen.wait()
-            elif six.PY3:
+            elif not six.PY2:
                 try:
                     ret = popen.wait(timeout)
                 except subprocess.TimeoutExpired:
diff --git a/src/_pytest/python_api.py b/src/_pytest/python_api.py
index df09aa32d8f..f6e475c3a24 100644
--- a/src/_pytest/python_api.py
+++ b/src/_pytest/python_api.py
@@ -694,7 +694,7 @@ def raises(expected_exception, *args, **kwargs):
         return RaisesContext(expected_exception, message, match_expr)
     elif isinstance(args[0], str):
         warnings.warn(deprecated.RAISES_EXEC, stacklevel=2)
-        code, = args
+        (code,) = args
         assert isinstance(code, str)
         frame = sys._getframe(1)
         loc = frame.f_locals.copy()
diff --git a/src/_pytest/recwarn.py b/src/_pytest/recwarn.py
index 574c6a1cced..7abf2e93550 100644
--- a/src/_pytest/recwarn.py
+++ b/src/_pytest/recwarn.py
@@ -95,7 +95,7 @@ def warns(expected_warning, *args, **kwargs):
         return WarningsChecker(expected_warning, match_expr=match_expr)
     elif isinstance(args[0], str):
         warnings.warn(WARNS_EXEC, stacklevel=2)
-        code, = args
+        (code,) = args
         assert isinstance(code, str)
         frame = sys._getframe(1)
         loc = frame.f_locals.copy()
diff --git a/src/_pytest/stepwise.py b/src/_pytest/stepwise.py
index 0427cd0ea45..88902595896 100644
--- a/src/_pytest/stepwise.py
+++ b/src/_pytest/stepwise.py
@@ -29,6 +29,7 @@ def __init__(self, config):
         self.config = config
         self.active = config.getvalue("stepwise")
         self.session = None
+        self.report_status = ""
 
         if self.active:
             self.lastfailed = config.cache.get("cache/stepwise", None)
@@ -70,15 +71,8 @@ def pytest_collection_modifyitems(self, session, config, items):
 
         config.hook.pytest_deselected(items=already_passed)
 
-    def pytest_collectreport(self, report):
-        if self.active and report.failed:
-            self.session.shouldstop = (
-                "Error when collecting test, stopping test execution."
-            )
-
     def pytest_runtest_logreport(self, report):
-        # Skip this hook if plugin is not active or the test is xfailed.
-        if not self.active or "xfail" in report.keywords:
+        if not self.active:
             return
 
         if report.failed:
@@ -104,7 +98,7 @@ def pytest_runtest_logreport(self, report):
                     self.lastfailed = None
 
     def pytest_report_collectionfinish(self):
-        if self.active and self.config.getoption("verbose") >= 0:
+        if self.active and self.config.getoption("verbose") >= 0 and self.report_status:
             return "stepwise: %s" % self.report_status
 
     def pytest_sessionfinish(self, session):
diff --git a/src/_pytest/terminal.py b/src/_pytest/terminal.py
index eb1970d5103..4418338c656 100644
--- a/src/_pytest/terminal.py
+++ b/src/_pytest/terminal.py
@@ -166,7 +166,11 @@ def getreportopt(config):
         reportchars += "w"
     elif config.option.disable_warnings and "w" in reportchars:
         reportchars = reportchars.replace("w", "")
+    aliases = {"F", "S"}
     for char in reportchars:
+        # handle old aliases
+        if char in aliases:
+            char = char.lower()
         if char == "a":
             reportopts = "sxXwEf"
         elif char == "A":
@@ -179,15 +183,18 @@ def getreportopt(config):
 
 @pytest.hookimpl(trylast=True)  # after _pytest.runner
 def pytest_report_teststatus(report):
+    letter = "F"
     if report.passed:
         letter = "."
     elif report.skipped:
         letter = "s"
-    elif report.failed:
-        letter = "F"
-        if report.when != "call":
-            letter = "f"
-    return report.outcome, letter, report.outcome.upper()
+
+    outcome = report.outcome
+    if report.when in ("collect", "setup", "teardown") and outcome == "failed":
+        outcome = "error"
+        letter = "E"
+
+    return outcome, letter, outcome.upper()
 
 
 @attr.s
@@ -935,9 +942,7 @@ def show_skipped(lines):
             "x": show_xfailed,
             "X": show_xpassed,
             "f": partial(show_simple, "failed"),
-            "F": partial(show_simple, "failed"),
             "s": show_skipped,
-            "S": show_skipped,
             "p": partial(show_simple, "passed"),
             "E": partial(show_simple, "error"),
         }
diff --git a/src/_pytest/unittest.py b/src/_pytest/unittest.py
index e2e7efdc539..3ff6f45d8db 100644
--- a/src/_pytest/unittest.py
+++ b/src/_pytest/unittest.py
@@ -114,6 +114,7 @@ class TestCaseFunction(Function):
     def setup(self):
         self._testcase = self.parent.obj(self.name)
         self._fix_unittest_skip_decorator()
+        self._obj = getattr(self._testcase, self.name)
         if hasattr(self, "_request"):
             self._request._fillfixtures()
 
@@ -132,6 +133,7 @@ def _fix_unittest_skip_decorator(self):
 
     def teardown(self):
         self._testcase = None
+        self._obj = None
 
     def startTest(self, testcase):
         pass
diff --git a/testing/acceptance_test.py b/testing/acceptance_test.py
index 7016cf13b6e..9b33930a06c 100644
--- a/testing/acceptance_test.py
+++ b/testing/acceptance_test.py
@@ -9,11 +9,11 @@
 import types
 
 import attr
-import importlib_metadata
 import py
 import six
 
 import pytest
+from _pytest.compat import importlib_metadata
 from _pytest.main import EXIT_NOTESTSCOLLECTED
 from _pytest.main import EXIT_USAGEERROR
 from _pytest.warnings import SHOW_PYTEST_WARNINGS_ARG
@@ -223,7 +223,7 @@ def foo():
                 "conftest.py:2: in foo",
                 "    import qwerty",
                 "E   {}: No module named {q}qwerty{q}".format(
-                    exc_name, q="'" if six.PY3 else ""
+                    exc_name, q="" if six.PY2 else "'"
                 ),
             ]
         )
diff --git a/testing/code/test_source.py b/testing/code/test_source.py
index 0a2a98c0202..d2e3c134cd5 100644
--- a/testing/code/test_source.py
+++ b/testing/code/test_source.py
@@ -501,7 +501,7 @@ class A(object):
     class B(object):
         pass
 
-    B.__name__ = "B2"
+    B.__name__ = B.__qualname__ = "B2"
     assert getfslineno(B)[1] == -1
 
 
diff --git a/testing/conftest.py b/testing/conftest.py
index 6e01d710d11..627ee763d2f 100644
--- a/testing/conftest.py
+++ b/testing/conftest.py
@@ -1,6 +1,21 @@
 # -*- coding: utf-8 -*-
+import sys
+
 import pytest
 
+if sys.gettrace():
+
+    @pytest.fixture(autouse=True)
+    def restore_tracing():
+        """Restore tracing function (when run with Coverage.py).
+
+        https://bugs.python.org/issue37011
+        """
+        orig_trace = sys.gettrace()
+        yield
+        if sys.gettrace() != orig_trace:
+            sys.settrace(orig_trace)
+
 
 @pytest.hookimpl(hookwrapper=True, tryfirst=True)
 def pytest_collection_modifyitems(config, items):
diff --git a/testing/deprecated_test.py b/testing/deprecated_test.py
index a072f6b210c..70460214fbd 100644
--- a/testing/deprecated_test.py
+++ b/testing/deprecated_test.py
@@ -152,7 +152,7 @@ def test_pytest_plugins_in_non_top_level_conftest_unsupported_pyargs(
 
 
 def test_pytest_plugins_in_non_top_level_conftest_unsupported_no_top_level_conftest(
-    testdir
+    testdir,
 ):
     from _pytest.deprecated import PYTEST_PLUGINS_FROM_NON_TOP_LEVEL_CONFTEST
 
@@ -181,7 +181,7 @@ def test_func():
 
 
 def test_pytest_plugins_in_non_top_level_conftest_unsupported_no_false_positives(
-    testdir
+    testdir,
 ):
     from _pytest.deprecated import PYTEST_PLUGINS_FROM_NON_TOP_LEVEL_CONFTEST
 
diff --git a/testing/logging/test_reporting.py b/testing/logging/test_reporting.py
index e7a3a80ebf1..6ff5ccfb55a 100644
--- a/testing/logging/test_reporting.py
+++ b/testing/logging/test_reporting.py
@@ -921,14 +921,45 @@ def test_collection_live_logging(testdir):
 
     result = testdir.runpytest("--log-cli-level=INFO")
     result.stdout.fnmatch_lines(
-        [
-            "collecting*",
-            "*--- live log collection ---*",
-            "*Normal message*",
-            "collected 0 items",
-        ]
+        ["*--- live log collection ---*", "*Normal message*", "collected 0 items"]
+    )
+
+
+@pytest.mark.parametrize("verbose", ["", "-q", "-qq"])
+def test_collection_collect_only_live_logging(testdir, verbose):
+    testdir.makepyfile(
+        """
+        def test_simple():
+            pass
+    """
     )
 
+    result = testdir.runpytest("--collect-only", "--log-cli-level=INFO", verbose)
+
+    expected_lines = []
+
+    if not verbose:
+        expected_lines.extend(
+            [
+                "*collected 1 item*",
+                "*<Module test_collection_collect_only_live_logging.py>*",
+                "*no tests ran*",
+            ]
+        )
+    elif verbose == "-q":
+        assert "collected 1 item*" not in result.stdout.str()
+        expected_lines.extend(
+            [
+                "*test_collection_collect_only_live_logging.py::test_simple*",
+                "no tests ran in * seconds",
+            ]
+        )
+    elif verbose == "-qq":
+        assert "collected 1 item*" not in result.stdout.str()
+        expected_lines.extend(["*test_collection_collect_only_live_logging.py: 1*"])
+
+    result.stdout.fnmatch_lines(expected_lines)
+
 
 def test_collection_logging_to_file(testdir):
     log_file = testdir.tmpdir.join("pytest.log").strpath
diff --git a/testing/python/fixtures.py b/testing/python/fixtures.py
index bd1b1d97541..4869431c639 100644
--- a/testing/python/fixtures.py
+++ b/testing/python/fixtures.py
@@ -464,7 +464,7 @@ def test_func(something): pass
         assert repr(req).find(req.function.__name__) != -1
 
     def test_request_attributes_method(self, testdir):
-        item, = testdir.getitems(
+        (item,) = testdir.getitems(
             """
             import pytest
             class TestB(object):
@@ -492,7 +492,7 @@ def test_method(self, something):
                     pass
         """
         )
-        item1, = testdir.genitems([modcol])
+        (item1,) = testdir.genitems([modcol])
         assert item1.name == "test_method"
         arg2fixturedefs = fixtures.FixtureRequest(item1)._arg2fixturedefs
         assert len(arg2fixturedefs) == 1
@@ -756,7 +756,7 @@ def test_second():
 
     def test_request_getmodulepath(self, testdir):
         modcol = testdir.getmodulecol("def test_somefunc(): pass")
-        item, = testdir.genitems([modcol])
+        (item,) = testdir.genitems([modcol])
         req = fixtures.FixtureRequest(item)
         assert req.fspath == modcol.fspath
 
diff --git a/testing/python/metafunc.py b/testing/python/metafunc.py
index 945ab8627cb..d90787894ae 100644
--- a/testing/python/metafunc.py
+++ b/testing/python/metafunc.py
@@ -1765,3 +1765,16 @@ def test_func_b(y):
         result.stdout.fnmatch_lines(
             ["*test_func_a*0*PASS*", "*test_func_a*2*PASS*", "*test_func_b*10*PASS*"]
         )
+
+    def test_parametrize_positional_args(self, testdir):
+        testdir.makepyfile(
+            """
+            import pytest
+
+            @pytest.mark.parametrize("a", [1], False)
+            def test_foo(a):
+                pass
+        """
+        )
+        result = testdir.runpytest()
+        result.assert_outcomes(passed=1)
diff --git a/testing/python/raises.py b/testing/python/raises.py
index cd463d74b07..fa25d9f73ee 100644
--- a/testing/python/raises.py
+++ b/testing/python/raises.py
@@ -4,6 +4,7 @@
 import six
 
 import pytest
+from _pytest.compat import dummy_context_manager
 from _pytest.outcomes import Failed
 from _pytest.warning_types import PytestDeprecationWarning
 
@@ -220,7 +221,7 @@ def test_raises_match(self):
             int("asdf")
 
         msg = "with base 16"
-        expr = r"Pattern '{}' not found in 'invalid literal for int\(\) with base 10: 'asdf''".format(
+        expr = r"Pattern '{}' not found in \"invalid literal for int\(\) with base 10: 'asdf'\"".format(
             msg
         )
         with pytest.raises(AssertionError, match=expr):
@@ -278,3 +279,47 @@ def __class__(self):
                 with pytest.raises(CrappyClass()):
                     pass
             assert "via __class__" in excinfo.value.args[0]
+
+
+class TestUnicodeHandling:
+    """Test various combinations of bytes and unicode with pytest.raises (#5478)
+
+    https://github.com/pytest-dev/pytest/pull/5479#discussion_r298852433
+    """
+
+    success = dummy_context_manager
+    py2_only = pytest.mark.skipif(
+        not six.PY2, reason="bytes in raises only supported in Python 2"
+    )
+
+    @pytest.mark.parametrize(
+        "message, match, expectation",
+        [
+            (u"\u2603", u"\u2603", success()),
+            (u"\u2603", u"\u2603foo", pytest.raises(AssertionError)),
+            pytest.param(b"hello", b"hello", success(), marks=py2_only),
+            pytest.param(
+                b"hello", b"world", pytest.raises(AssertionError), marks=py2_only
+            ),
+            pytest.param(u"hello", b"hello", success(), marks=py2_only),
+            pytest.param(
+                u"hello", b"world", pytest.raises(AssertionError), marks=py2_only
+            ),
+            pytest.param(
+                u"😊".encode("UTF-8"),
+                b"world",
+                pytest.raises(AssertionError),
+                marks=py2_only,
+            ),
+            pytest.param(
+                u"world",
+                u"😊".encode("UTF-8"),
+                pytest.raises(AssertionError),
+                marks=py2_only,
+            ),
+        ],
+    )
+    def test_handling(self, message, match, expectation):
+        with expectation:
+            with pytest.raises(RuntimeError, match=match):
+                raise RuntimeError(message)
diff --git a/testing/test_assertion.py b/testing/test_assertion.py
index 2085ffd8b44..225362e64ef 100644
--- a/testing/test_assertion.py
+++ b/testing/test_assertion.py
@@ -14,6 +14,7 @@
 from _pytest import outcomes
 from _pytest.assertion import truncate
 from _pytest.assertion import util
+from _pytest.compat import ATTRS_EQ_FIELD
 
 PY3 = sys.version_info >= (3, 0)
 
@@ -179,7 +180,8 @@ def check(values, value):
                 return check
             """,
             "mainwrapper.py": """\
-            import pytest, importlib_metadata
+            import pytest
+            from _pytest.compat import importlib_metadata
 
             class DummyEntryPoint(object):
                 name = 'spam'
@@ -687,7 +689,7 @@ def test_attrs_with_attribute_comparison_off(self):
         @attr.s
         class SimpleDataObject(object):
             field_a = attr.ib()
-            field_b = attr.ib(cmp=False)
+            field_b = attr.ib(**{ATTRS_EQ_FIELD: False})
 
         left = SimpleDataObject(1, "b")
         right = SimpleDataObject(1, "b")
diff --git a/testing/test_assertrewrite.py b/testing/test_assertrewrite.py
index 19d050f8769..87dada213d6 100644
--- a/testing/test_assertrewrite.py
+++ b/testing/test_assertrewrite.py
@@ -656,12 +656,6 @@ def __repr__(self):
         else:
             assert lines == ["assert 0 == 1\n +  where 1 = \\n{ \\n~ \\n}.a"]
 
-    def test_unroll_expression(self):
-        def f():
-            assert all(x == 1 for x in range(10))
-
-        assert "0 == 1" in getmsg(f)
-
     def test_custom_repr_non_ascii(self):
         def f():
             class A(object):
@@ -677,53 +671,6 @@ def __repr__(self):
         assert "UnicodeDecodeError" not in msg
         assert "UnicodeEncodeError" not in msg
 
-    def test_unroll_generator(self, testdir):
-        testdir.makepyfile(
-            """
-            def check_even(num):
-                if num % 2 == 0:
-                    return True
-                return False
-
-            def test_generator():
-                odd_list = list(range(1,9,2))
-                assert all(check_even(num) for num in odd_list)"""
-        )
-        result = testdir.runpytest()
-        result.stdout.fnmatch_lines(["*assert False*", "*where False = check_even(1)*"])
-
-    def test_unroll_list_comprehension(self, testdir):
-        testdir.makepyfile(
-            """
-            def check_even(num):
-                if num % 2 == 0:
-                    return True
-                return False
-
-            def test_list_comprehension():
-                odd_list = list(range(1,9,2))
-                assert all([check_even(num) for num in odd_list])"""
-        )
-        result = testdir.runpytest()
-        result.stdout.fnmatch_lines(["*assert False*", "*where False = check_even(1)*"])
-
-    def test_for_loop(self, testdir):
-        testdir.makepyfile(
-            """
-            def check_even(num):
-                if num % 2 == 0:
-                    return True
-                return False
-
-            def test_for_loop():
-                odd_list = list(range(1,9,2))
-                for num in odd_list:
-                    assert check_even(num)
-        """
-        )
-        result = testdir.runpytest()
-        result.stdout.fnmatch_lines(["*assert False*", "*where False = check_even(1)*"])
-
 
 class TestRewriteOnImport(object):
     def test_pycache_is_a_file(self, testdir):
diff --git a/testing/test_collection.py b/testing/test_collection.py
index 1cc8938666f..0fbbbec54df 100644
--- a/testing/test_collection.py
+++ b/testing/test_collection.py
@@ -494,7 +494,7 @@ def test_collect_protocol_single_function(self, testdir):
         p = testdir.makepyfile("def test_func(): pass")
         id = "::".join([p.basename, "test_func"])
         items, hookrec = testdir.inline_genitems(id)
-        item, = items
+        (item,) = items
         assert item.name == "test_func"
         newid = item.nodeid
         assert newid == id
@@ -613,9 +613,9 @@ def test_serialization_byid(self, testdir):
         testdir.makepyfile("def test_func(): pass")
         items, hookrec = testdir.inline_genitems()
         assert len(items) == 1
-        item, = items
+        (item,) = items
         items2, hookrec = testdir.inline_genitems(item.nodeid)
-        item2, = items2
+        (item2,) = items2
         assert item2.name == item.name
         assert item2.fspath == item.fspath
 
@@ -630,7 +630,7 @@ def test_method(self):
         arg = p.basename + "::TestClass::test_method"
         items, hookrec = testdir.inline_genitems(arg)
         assert len(items) == 1
-        item, = items
+        (item,) = items
         assert item.nodeid.endswith("TestClass::test_method")
         # ensure we are reporting the collection of the single test item (#2464)
         assert [x.name for x in self.get_reported_items(hookrec)] == ["test_method"]
@@ -1211,6 +1211,18 @@ def test_collect_pkg_init_and_file_in_args(testdir):
     )
 
 
+def test_collect_pkg_init_only(testdir):
+    subdir = testdir.mkdir("sub")
+    init = subdir.ensure("__init__.py")
+    init.write("def test_init(): pass")
+
+    result = testdir.runpytest(str(init))
+    result.stdout.fnmatch_lines(["*no tests ran in*"])
+
+    result = testdir.runpytest("-v", "-o", "python_files=*.py", str(init))
+    result.stdout.fnmatch_lines(["sub/__init__.py::test_init PASSED*", "*1 passed in*"])
+
+
 @pytest.mark.skipif(
     not hasattr(py.path.local, "mksymlinkto"),
     reason="symlink not available on this platform",
diff --git a/testing/test_config.py b/testing/test_config.py
index e588c262a9c..d13f119b020 100644
--- a/testing/test_config.py
+++ b/testing/test_config.py
@@ -6,19 +6,20 @@
 import sys
 import textwrap
 
-import importlib_metadata
-
 import _pytest._code
 import pytest
+from _pytest.compat import importlib_metadata
 from _pytest.config import _iter_rewritable_modules
 from _pytest.config.exceptions import UsageError
 from _pytest.config.findpaths import determine_setup
 from _pytest.config.findpaths import get_common_ancestor
 from _pytest.config.findpaths import getcfg
+from _pytest.main import EXIT_INTERRUPTED
 from _pytest.main import EXIT_NOTESTSCOLLECTED
 from _pytest.main import EXIT_OK
 from _pytest.main import EXIT_TESTSFAILED
 from _pytest.main import EXIT_USAGEERROR
+from _pytest.pathlib import Path
 
 
 class TestParseIni(object):
@@ -130,6 +131,12 @@ def test_toxini_before_lower_pytestini(self, testdir):
         config = testdir.parseconfigure(sub)
         assert config.getini("minversion") == "2.0"
 
+    def test_ini_parse_error(self, testdir):
+        testdir.tmpdir.join("pytest.ini").write("addopts = -x")
+        result = testdir.runpytest()
+        assert result.ret != 0
+        result.stderr.fnmatch_lines(["ERROR: *pytest.ini:1: no section header defined"])
+
     @pytest.mark.xfail(reason="probably not needed")
     def test_confcutdir(self, testdir):
         sub = testdir.mkdir("sub")
@@ -425,15 +432,21 @@ def test_confcutdir_check_isdir(self, testdir):
     @pytest.mark.parametrize(
         "names, expected",
         [
+            # dist-info based distributions root are files as will be put in PYTHONPATH
             (["bar.py"], ["bar"]),
-            (["foo", "bar.py"], []),
-            (["foo", "bar.pyc"], []),
-            (["foo", "__init__.py"], ["foo"]),
-            (["foo", "bar", "__init__.py"], []),
+            (["foo/bar.py"], ["bar"]),
+            (["foo/bar.pyc"], []),
+            (["foo/__init__.py"], ["foo"]),
+            (["bar/__init__.py", "xz.py"], ["bar", "xz"]),
+            (["setup.py"], []),
+            # egg based distributions root contain the files from the dist root
+            (["src/bar/__init__.py"], ["bar"]),
+            (["src/bar/__init__.py", "setup.py"], ["bar"]),
+            (["source/python/bar/__init__.py", "setup.py"], ["bar"]),
         ],
     )
     def test_iter_rewritable_modules(self, names, expected):
-        assert list(_iter_rewritable_modules(["/".join(names)])) == expected
+        assert list(_iter_rewritable_modules(names)) == expected
 
 
 class TestConfigFromdictargs(object):
@@ -586,6 +599,29 @@ def distributions():
         testdir.parseconfig()
 
 
+def test_importlib_metadata_broken_distribution(testdir, monkeypatch):
+    """Integration test for broken distributions with 'files' metadata being None (#5389)"""
+    monkeypatch.delenv("PYTEST_DISABLE_PLUGIN_AUTOLOAD", raising=False)
+
+    class DummyEntryPoint:
+        name = "mytestplugin"
+        group = "pytest11"
+
+        def load(self):
+            return object()
+
+    class Distribution:
+        version = "1.0"
+        files = None
+        entry_points = (DummyEntryPoint(),)
+
+    def distributions():
+        return (Distribution(),)
+
+    monkeypatch.setattr(importlib_metadata, "distributions", distributions)
+    testdir.parseconfig()
+
+
 @pytest.mark.parametrize("block_it", [True, False])
 def test_plugin_preparse_prevents_setuptools_loading(testdir, monkeypatch, block_it):
     monkeypatch.delenv("PYTEST_DISABLE_PLUGIN_AUTOLOAD", raising=False)
@@ -729,10 +765,10 @@ def pytest_addoption(parser):
         **{
             "conftest": conftest_source,
             "subdir/conftest": conftest_source,
-            "subdir/test_foo": """
+            "subdir/test_foo": """\
             def test_foo(pytestconfig):
                 assert pytestconfig.getini('foo') == 'subdir'
-        """,
+            """,
         }
     )
 
@@ -765,6 +801,12 @@ def pytest_internalerror(self, excrepr):
     assert "ValueError" in err
 
 
+def test_no_terminal_discovery_error(testdir):
+    testdir.makepyfile("raise TypeError('oops!')")
+    result = testdir.runpytest("-p", "no:terminal", "--collect-only")
+    assert result.ret == EXIT_INTERRUPTED
+
+
 def test_load_initial_conftest_last_ordering(testdir, _config_for_test):
     pm = _config_for_test.pluginmanager
 
@@ -1181,6 +1223,29 @@ def test_config_does_not_load_blocked_plugin_from_args(testdir):
     assert result.ret == EXIT_USAGEERROR
 
 
+def test_invocation_args(testdir):
+    """Ensure that Config.invocation_* arguments are correctly defined"""
+
+    class DummyPlugin(object):
+        pass
+
+    p = testdir.makepyfile("def test(): pass")
+    plugin = DummyPlugin()
+    rec = testdir.inline_run(p, "-v", plugins=[plugin])
+    calls = rec.getcalls("pytest_runtest_protocol")
+    assert len(calls) == 1
+    call = calls[0]
+    config = call.item.config
+
+    assert config.invocation_params.args == [p, "-v"]
+    assert config.invocation_params.dir == Path(str(testdir.tmpdir))
+
+    plugins = config.invocation_params.plugins
+    assert len(plugins) == 2
+    assert plugins[0] is plugin
+    assert type(plugins[1]).__name__ == "Collect"  # installed by testdir.inline_run()
+
+
 @pytest.mark.parametrize(
     "plugin",
     [
diff --git a/testing/test_doctest.py b/testing/test_doctest.py
index 25a35c3c136..723f1fe9642 100644
--- a/testing/test_doctest.py
+++ b/testing/test_doctest.py
@@ -3,11 +3,14 @@
 from __future__ import division
 from __future__ import print_function
 
+import inspect
 import sys
 import textwrap
 
 import pytest
 from _pytest.compat import MODULE_NOT_FOUND_ERROR
+from _pytest.doctest import _is_mocked
+from _pytest.doctest import _patch_unwrap_mock_aware
 from _pytest.doctest import DoctestItem
 from _pytest.doctest import DoctestModule
 from _pytest.doctest import DoctestTextfile
@@ -1237,3 +1240,25 @@ class Example(object):
     )
     result = testdir.runpytest("--doctest-modules")
     result.stdout.fnmatch_lines(["* 1 passed *"])
+
+
+class Broken:
+    def __getattr__(self, _):
+        raise KeyError("This should be an AttributeError")
+
+
+@pytest.mark.skipif(not hasattr(inspect, "unwrap"), reason="nothing to patch")
+@pytest.mark.parametrize(  # pragma: no branch (lambdas are not called)
+    "stop", [None, _is_mocked, lambda f: None, lambda f: False, lambda f: True]
+)
+def test_warning_on_unwrap_of_broken_object(stop):
+    bad_instance = Broken()
+    assert inspect.unwrap.__module__ == "inspect"
+    with _patch_unwrap_mock_aware():
+        assert inspect.unwrap.__module__ != "inspect"
+        with pytest.warns(
+            pytest.PytestWarning, match="^Got KeyError.* when unwrapping"
+        ):
+            with pytest.raises(KeyError):
+                inspect.unwrap(bad_instance, stop=stop)
+    assert inspect.unwrap.__module__ == "inspect"
diff --git a/testing/test_entry_points.py b/testing/test_entry_points.py
index ad64d004f1c..95ebc415b15 100644
--- a/testing/test_entry_points.py
+++ b/testing/test_entry_points.py
@@ -3,7 +3,7 @@
 from __future__ import division
 from __future__ import print_function
 
-import importlib_metadata
+from _pytest.compat import importlib_metadata
 
 
 def test_pytest_entry_points_are_identical():
diff --git a/testing/test_junitxml.py b/testing/test_junitxml.py
index 4c21c94d365..ba529cf331d 100644
--- a/testing/test_junitxml.py
+++ b/testing/test_junitxml.py
@@ -4,7 +4,9 @@
 from __future__ import print_function
 
 import os
+import platform
 import sys
+from datetime import datetime
 from xml.dom import minidom
 
 import py
@@ -47,6 +49,16 @@ def find_first_by_tag(self, tag):
     def _by_tag(self, tag):
         return self.__node.getElementsByTagName(tag)
 
+    @property
+    def children(self):
+        return [type(self)(x) for x in self.__node.childNodes]
+
+    @property
+    def get_unique_child(self):
+        children = self.children
+        assert len(children) == 1
+        return children[0]
+
     def find_nth_by_tag(self, tag, n):
         items = self._by_tag(tag)
         try:
@@ -81,7 +93,7 @@ def tag(self):
         return self.__node.tagName
 
     @property
-    def next_siebling(self):
+    def next_sibling(self):
         return type(self)(self.__node.nextSibling)
 
 
@@ -135,6 +147,30 @@ def test_xpass():
         node = dom.find_first_by_tag("testsuite")
         node.assert_attr(name="pytest", errors=1, failures=2, skipped=1, tests=5)
 
+    def test_hostname_in_xml(self, testdir):
+        testdir.makepyfile(
+            """
+            def test_pass():
+                pass
+        """
+        )
+        result, dom = runandparse(testdir)
+        node = dom.find_first_by_tag("testsuite")
+        node.assert_attr(hostname=platform.node())
+
+    def test_timestamp_in_xml(self, testdir):
+        testdir.makepyfile(
+            """
+            def test_pass():
+                pass
+        """
+        )
+        start_time = datetime.now()
+        result, dom = runandparse(testdir)
+        node = dom.find_first_by_tag("testsuite")
+        timestamp = datetime.strptime(node["timestamp"], "%Y-%m-%dT%H:%M:%S.%f")
+        assert start_time <= timestamp < datetime.now()
+
     def test_timing_function(self, testdir):
         testdir.makepyfile(
             """
@@ -390,11 +426,11 @@ def test_fail():
         fnode = tnode.find_first_by_tag("failure")
         fnode.assert_attr(message="ValueError: 42")
         assert "ValueError" in fnode.toxml()
-        systemout = fnode.next_siebling
+        systemout = fnode.next_sibling
         assert systemout.tag == "system-out"
         assert "hello-stdout" in systemout.toxml()
         assert "info msg" not in systemout.toxml()
-        systemerr = systemout.next_siebling
+        systemerr = systemout.next_sibling
         assert systemerr.tag == "system-err"
         assert "hello-stderr" in systemerr.toxml()
         assert "info msg" not in systemerr.toxml()
@@ -1101,6 +1137,20 @@ def test_x(i):
     assert failed == ["test_x[22]"]
 
 
+def test_root_testsuites_tag(testdir):
+    testdir.makepyfile(
+        """
+        def test_x():
+            pass
+    """
+    )
+    _, dom = runandparse(testdir)
+    root = dom.get_unique_child
+    assert root.tag == "testsuites"
+    suite_node = root.get_unique_child
+    assert suite_node.tag == "testsuite"
+
+
 def test_runs_twice(testdir):
     f = testdir.makepyfile(
         """
@@ -1359,3 +1409,39 @@ def test_func():
     node = dom.find_first_by_tag("testcase")
     assert len(node.find_by_tag("system-err")) == 0
     assert len(node.find_by_tag("system-out")) == 0
+
+
+@pytest.mark.parametrize("junit_logging", ["no", "system-out", "system-err"])
+def test_logging_passing_tests_disabled_logs_output_for_failing_test_issue5430(
+    testdir, junit_logging
+):
+    testdir.makeini(
+        """
+        [pytest]
+        junit_log_passing_tests=False
+    """
+    )
+    testdir.makepyfile(
+        """
+        import pytest
+        import logging
+        import sys
+
+        def test_func():
+            logging.warning('hello')
+            assert 0
+    """
+    )
+    result, dom = runandparse(testdir, "-o", "junit_logging=%s" % junit_logging)
+    assert result.ret == 1
+    node = dom.find_first_by_tag("testcase")
+    if junit_logging == "system-out":
+        assert len(node.find_by_tag("system-err")) == 0
+        assert len(node.find_by_tag("system-out")) == 1
+    elif junit_logging == "system-err":
+        assert len(node.find_by_tag("system-err")) == 1
+        assert len(node.find_by_tag("system-out")) == 0
+    else:
+        assert junit_logging == "no"
+        assert len(node.find_by_tag("system-err")) == 0
+        assert len(node.find_by_tag("system-out")) == 0
diff --git a/testing/test_mark.py b/testing/test_mark.py
index 5bd97d547e8..727bd9420c2 100644
--- a/testing/test_mark.py
+++ b/testing/test_mark.py
@@ -413,6 +413,28 @@ def test_func(a, b):
     assert result.ret == 0
 
 
+def test_parametrize_iterator(testdir):
+    """parametrize should work with generators (#5354)."""
+    py_file = testdir.makepyfile(
+        """\
+        import pytest
+
+        def gen():
+            yield 1
+            yield 2
+            yield 3
+
+        @pytest.mark.parametrize('a', gen())
+        def test(a):
+            assert a >= 1
+        """
+    )
+    result = testdir.runpytest(py_file)
+    assert result.ret == 0
+    # should not skip any tests
+    result.stdout.fnmatch_lines(["*3 passed*"])
+
+
 class TestFunctional(object):
     def test_merging_markers_deep(self, testdir):
         # issue 199 - propagate markers into nested classes
@@ -986,7 +1008,7 @@ def test_custom_mark_parametrized(obj_type):
 def test_pytest_param_id_requires_string():
     with pytest.raises(TypeError) as excinfo:
         pytest.param(id=True)
-    msg, = excinfo.value.args
+    (msg,) = excinfo.value.args
     if six.PY2:
         assert msg == "Expected id to be a string, got <type 'bool'>: True"
     else:
@@ -1003,7 +1025,7 @@ def test_pytest_param_warning_on_unknown_kwargs():
         # typo, should be marks=
         pytest.param(1, 2, mark=pytest.mark.xfail())
     assert warninfo[0].filename == __file__
-    msg, = warninfo[0].message.args
+    (msg,) = warninfo[0].message.args
     assert msg == (
         "pytest.param() got unexpected keyword arguments: ['mark'].\n"
         "This will be an error in future versions."
diff --git a/testing/test_monkeypatch.py b/testing/test_monkeypatch.py
index 9b2f4550240..961c57e06a3 100644
--- a/testing/test_monkeypatch.py
+++ b/testing/test_monkeypatch.py
@@ -209,7 +209,7 @@ class TestEnvironWarnings(object):
 
     VAR_NAME = u"PYTEST_INTERNAL_MY_VAR"
 
-    @pytest.mark.skipif(six.PY3, reason="Python 2 only test")
+    @pytest.mark.skipif(not six.PY2, reason="Python 2 only test")
     def test_setenv_unicode_key(self, monkeypatch):
         with pytest.warns(
             pytest.PytestWarning,
@@ -217,7 +217,7 @@ def test_setenv_unicode_key(self, monkeypatch):
         ):
             monkeypatch.setenv(self.VAR_NAME, "2")
 
-    @pytest.mark.skipif(six.PY3, reason="Python 2 only test")
+    @pytest.mark.skipif(not six.PY2, reason="Python 2 only test")
     def test_delenv_unicode_key(self, monkeypatch):
         with pytest.warns(
             pytest.PytestWarning,
diff --git a/testing/test_pastebin.py b/testing/test_pastebin.py
index 9491f6d9019..02efdb55407 100644
--- a/testing/test_pastebin.py
+++ b/testing/test_pastebin.py
@@ -74,7 +74,7 @@ def test():
         """
         )
         result = testdir.runpytest("--pastebin=all")
-        if sys.version_info[0] == 3:
+        if sys.version_info[0] >= 3:
             expected_msg = "*assert '☺' == 1*"
         else:
             expected_msg = "*assert '\\xe2\\x98\\xba' == 1*"
@@ -126,7 +126,7 @@ def test_create_new_paste(self, pastebin, mocked_urlopen):
         assert len(mocked_urlopen) == 1
         url, data = mocked_urlopen[0]
         assert type(data) is bytes
-        lexer = "python3" if sys.version_info[0] == 3 else "python"
+        lexer = "text"
         assert url == "https://bpaste.net"
         assert "lexer=%s" % lexer in data.decode()
         assert "code=full-paste-contents" in data.decode()
diff --git a/testing/test_pytester.py b/testing/test_pytester.py
index 54d364ca1fd..f7cc0936cce 100644
--- a/testing/test_pytester.py
+++ b/testing/test_pytester.py
@@ -245,8 +245,8 @@ def test_inline_run_taking_and_restoring_a_sys_modules_snapshot(
     ):
         spy_factory = self.spy_factory()
         monkeypatch.setattr(pytester, "SysModulesSnapshot", spy_factory)
-        original = dict(sys.modules)
         testdir.syspathinsert()
+        original = dict(sys.modules)
         testdir.makepyfile(import1="# you son of a silly person")
         testdir.makepyfile(import2="# my hovercraft is full of eels")
         test_mod = testdir.makepyfile(
diff --git a/testing/test_recwarn.py b/testing/test_recwarn.py
index 2246085f59e..d652219df3e 100644
--- a/testing/test_recwarn.py
+++ b/testing/test_recwarn.py
@@ -225,7 +225,7 @@ def test_strings(self):
         assert len(warninfo) == 3
         for w in warninfo:
             assert w.filename == __file__
-            msg, = w.message.args
+            (msg,) = w.message.args
             assert msg.startswith("warns(..., 'code(as_a_string)') is deprecated")
 
     def test_function(self):
diff --git a/testing/test_runner.py b/testing/test_runner.py
index 6906efb910c..804c2831c89 100644
--- a/testing/test_runner.py
+++ b/testing/test_runner.py
@@ -336,8 +336,10 @@ def test_method(self):
         assert reps[2].failed
         assert reps[2].when == "teardown"
         assert reps[2].longrepr.reprcrash.message in (
-            # python3 error
+            # python3 < 3.10 error
             "TypeError: teardown_method() missing 2 required positional arguments: 'y' and 'z'",
+            # python3 >= 3.10 error
+            "TypeError: TestClass.teardown_method() missing 2 required positional arguments: 'y' and 'z'",
             # python2 error
             "TypeError: teardown_method() takes exactly 4 arguments (2 given)",
         )
diff --git a/testing/test_skipping.py b/testing/test_skipping.py
index 55119ae1269..7834971125a 100644
--- a/testing/test_skipping.py
+++ b/testing/test_skipping.py
@@ -136,7 +136,7 @@ def test_func():
         )
 
     def test_skipif_class(self, testdir):
-        item, = testdir.getitems(
+        (item,) = testdir.getitems(
             """
             import pytest
             class TestClass(object):
diff --git a/testing/test_stepwise.py b/testing/test_stepwise.py
index 68e5989ecdb..d8d11917ade 100644
--- a/testing/test_stepwise.py
+++ b/testing/test_stepwise.py
@@ -1,4 +1,6 @@
 # -*- coding: utf-8 -*-
+import sys
+
 import pytest
 
 
@@ -157,14 +159,66 @@ def test_change_testfile(stepwise_testdir):
     assert "test_success PASSED" in stdout
 
 
-def test_stop_on_collection_errors(broken_testdir):
-    result = broken_testdir.runpytest(
-        "-v",
-        "--strict-markers",
-        "--stepwise",
-        "working_testfile.py",
-        "broken_testfile.py",
+@pytest.mark.parametrize("broken_first", [True, False])
+def test_stop_on_collection_errors(broken_testdir, broken_first):
+    """Stop during collection errors. Broken test first or broken test last
+    actually surfaced a bug (#5444), so we test both situations."""
+    files = ["working_testfile.py", "broken_testfile.py"]
+    if broken_first:
+        files.reverse()
+    result = broken_testdir.runpytest("-v", "--strict-markers", "--stepwise", *files)
+    result.stdout.fnmatch_lines("*errors during collection*")
+
+
+def test_xfail_handling(testdir):
+    """Ensure normal xfail is ignored, and strict xfail interrupts the session in sw mode
+
+    (#5547)
+    """
+    contents = """
+        import pytest
+        def test_a(): pass
+
+        @pytest.mark.xfail(strict={strict})
+        def test_b(): assert {assert_value}
+
+        def test_c(): pass
+        def test_d(): pass
+    """
+    testdir.makepyfile(contents.format(assert_value="0", strict="False"))
+    result = testdir.runpytest("--sw", "-v")
+    result.stdout.fnmatch_lines(
+        [
+            "*::test_a PASSED *",
+            "*::test_b XFAIL *",
+            "*::test_c PASSED *",
+            "*::test_d PASSED *",
+            "* 3 passed, 1 xfailed in *",
+        ]
     )
 
-    stdout = result.stdout.str()
-    assert "errors during collection" in stdout
+    testdir.makepyfile(contents.format(assert_value="1", strict="True"))
+    result = testdir.runpytest("--sw", "-v")
+    result.stdout.fnmatch_lines(
+        [
+            "*::test_a PASSED *",
+            "*::test_b FAILED *",
+            "* Interrupted*",
+            "* 1 failed, 1 passed in *",
+        ]
+    )
+
+    # because we are writing to the same file, mtime might not be affected enough to
+    # invalidate the cache, making this next run flaky
+    if not sys.dont_write_bytecode:
+        testdir.tmpdir.join("__pycache__").remove()
+    testdir.makepyfile(contents.format(assert_value="0", strict="True"))
+    result = testdir.runpytest("--sw", "-v")
+    result.stdout.fnmatch_lines(
+        [
+            "*::test_b XFAIL *",
+            "*::test_c PASSED *",
+            "*::test_d PASSED *",
+            "* 2 passed, 1 deselected, 1 xfailed in *",
+        ]
+    )
diff --git a/testing/test_terminal.py b/testing/test_terminal.py
index 1b2e46c7c2b..752c894ca93 100644
--- a/testing/test_terminal.py
+++ b/testing/test_terminal.py
@@ -759,6 +759,35 @@ def test(i):
         result = testdir.runpytest(*params)
         result.stdout.fnmatch_lines(["collected 3 items", "hello from hook: 3 items"])
 
+    def test_summary_f_alias(self, testdir):
+        """Test that 'f' and 'F' report chars are aliases and don't show up twice in the summary (#6334)"""
+        testdir.makepyfile(
+            """
+            def test():
+                assert False
+            """
+        )
+        result = testdir.runpytest("-rfF")
+        expected = "FAILED test_summary_f_alias.py::test - assert False"
+        result.stdout.fnmatch_lines([expected])
+        assert result.stdout.lines.count(expected) == 1
+
+    def test_summary_s_alias(self, testdir):
+        """Test that 's' and 'S' report chars are aliases and don't show up twice in the summary"""
+        testdir.makepyfile(
+            """
+            import pytest
+
+            @pytest.mark.skip
+            def test():
+                pass
+            """
+        )
+        result = testdir.runpytest("-rsS")
+        expected = "SKIPPED [1] test_summary_s_alias.py:3: unconditional skip"
+        result.stdout.fnmatch_lines([expected])
+        assert result.stdout.lines.count(expected) == 1
+
 
 def test_fail_extra_reporting(testdir, monkeypatch):
     monkeypatch.setenv("COLUMNS", "80")
@@ -1551,12 +1580,16 @@ def test_teardown_with_test_also_failing(
         testdir.makepyfile(
             """
             def test_foo(fail_teardown):
-                assert False
+                assert 0
         """
         )
-        output = testdir.runpytest()
+        output = testdir.runpytest("-rfE")
         output.stdout.re_match_lines(
-            [r"test_teardown_with_test_also_failing.py FE\s+\[100%\]"]
+            [
+                r"test_teardown_with_test_also_failing.py FE\s+\[100%\]",
+                "FAILED test_teardown_with_test_also_failing.py::test_foo - assert 0",
+                "ERROR test_teardown_with_test_also_failing.py::test_foo - assert False",
+            ]
         )
 
     def test_teardown_many(self, testdir, many_files):
diff --git a/testing/test_tmpdir.py b/testing/test_tmpdir.py
index 40ffe98af98..7622342b1d7 100644
--- a/testing/test_tmpdir.py
+++ b/testing/test_tmpdir.py
@@ -3,6 +3,9 @@
 from __future__ import division
 from __future__ import print_function
 
+import errno
+import os
+import stat
 import sys
 
 import attr
@@ -270,7 +273,7 @@ def test_lock_register_cleanup_removal(self, tmp_path):
         registry = []
         register_cleanup_lock_removal(lock, register=registry.append)
 
-        cleanup_func, = registry
+        (cleanup_func,) = registry
 
         assert lock.is_file()
 
@@ -317,12 +320,25 @@ def test_cleanup_locked(self, tmp_path):
             p, consider_lock_dead_if_created_before=p.stat().st_mtime + 1
         )
 
-    def test_rmtree(self, tmp_path):
-        from _pytest.pathlib import rmtree
+    def test_cleanup_ignores_symlink(self, tmp_path):
+        the_symlink = tmp_path / (self.PREFIX + "current")
+        attempt_symlink_to(the_symlink, tmp_path / (self.PREFIX + "5"))
+        self._do_cleanup(tmp_path)
+
+    def test_removal_accepts_lock(self, tmp_path):
+        folder = pathlib.make_numbered_dir(root=tmp_path, prefix=self.PREFIX)
+        pathlib.create_cleanup_lock(folder)
+        pathlib.maybe_delete_a_numbered_dir(folder)
+        assert folder.is_dir()
+
+
+class TestRmRf:
+    def test_rm_rf(self, tmp_path):
+        from _pytest.pathlib import rm_rf
 
         adir = tmp_path / "adir"
         adir.mkdir()
-        rmtree(adir)
+        rm_rf(adir)
 
         assert not adir.exists()
 
@@ -330,19 +346,75 @@ def test_rmtree(self, tmp_path):
         afile = adir / "afile"
         afile.write_bytes(b"aa")
 
-        rmtree(adir, force=True)
+        rm_rf(adir)
         assert not adir.exists()
 
-    def test_cleanup_ignores_symlink(self, tmp_path):
-        the_symlink = tmp_path / (self.PREFIX + "current")
-        attempt_symlink_to(the_symlink, tmp_path / (self.PREFIX + "5"))
-        self._do_cleanup(tmp_path)
+    def test_rm_rf_with_read_only_file(self, tmp_path):
+        """Ensure rm_rf can remove directories with read-only files in them (#5524)"""
+        from _pytest.pathlib import rm_rf
 
-    def test_removal_accepts_lock(self, tmp_path):
-        folder = pathlib.make_numbered_dir(root=tmp_path, prefix=self.PREFIX)
-        pathlib.create_cleanup_lock(folder)
-        pathlib.maybe_delete_a_numbered_dir(folder)
-        assert folder.is_dir()
+        fn = tmp_path / "dir/foo.txt"
+        fn.parent.mkdir()
+
+        fn.touch()
+
+        self.chmod_r(fn)
+
+        rm_rf(fn.parent)
+
+        assert not fn.parent.is_dir()
+
+    def chmod_r(self, path):
+        mode = os.stat(str(path)).st_mode
+        os.chmod(str(path), mode & ~stat.S_IWRITE)
+
+    def test_rm_rf_with_read_only_directory(self, tmp_path):
+        """Ensure rm_rf can remove read-only directories (#5524)"""
+        from _pytest.pathlib import rm_rf
+
+        adir = tmp_path / "dir"
+        adir.mkdir()
+
+        (adir / "foo.txt").touch()
+        self.chmod_r(adir)
+
+        rm_rf(adir)
+
+        assert not adir.is_dir()
+
+    def test_on_rm_rf_error(self, tmp_path):
+        from _pytest.pathlib import on_rm_rf_error
+
+        adir = tmp_path / "dir"
+        adir.mkdir()
+
+        fn = adir / "foo.txt"
+        fn.touch()
+        self.chmod_r(fn)
+
+        # unknown exception
+        with pytest.warns(pytest.PytestWarning):
+            exc_info = (None, RuntimeError(), None)
+            on_rm_rf_error(os.unlink, str(fn), exc_info, start_path=tmp_path)
+            assert fn.is_file()
+
+        # we ignore FileNotFoundError
+        file_not_found = OSError()
+        file_not_found.errno = errno.ENOENT
+        exc_info = (None, file_not_found, None)
+        assert not on_rm_rf_error(None, str(fn), exc_info, start_path=tmp_path)
+
+        permission_error = OSError()
+        permission_error.errno = errno.EACCES
+        # unknown function
+        with pytest.warns(pytest.PytestWarning):
+            exc_info = (None, permission_error, None)
+            on_rm_rf_error(None, str(fn), exc_info, start_path=tmp_path)
+            assert fn.is_file()
+
+        exc_info = (None, permission_error, None)
+        on_rm_rf_error(os.unlink, str(fn), exc_info, start_path=tmp_path)
+        assert not fn.is_file()
 
 
 def attempt_symlink_to(path, to_path):
@@ -358,3 +430,24 @@ def attempt_symlink_to(path, to_path):
 
 def test_tmpdir_equals_tmp_path(tmpdir, tmp_path):
     assert Path(tmpdir) == tmp_path
+
+
+def test_basetemp_with_read_only_files(testdir):
+    """Integration test for #5524"""
+    testdir.makepyfile(
+        """
+        import os
+        import stat
+
+        def test(tmp_path):
+            fn = tmp_path / 'foo.txt'
+            fn.write_text(u'hello')
+            mode = os.stat(str(fn)).st_mode
+            os.chmod(str(fn), mode & ~stat.S_IREAD)
+    """
+    )
+    result = testdir.runpytest("--basetemp=tmp")
+    assert result.ret == 0
+    # running a second time and ensure we don't crash
+    result = testdir.runpytest("--basetemp=tmp")
+    assert result.ret == 0
diff --git a/testing/test_unittest.py b/testing/test_unittest.py
index bb41952abbe..6b721d1c0ce 100644
--- a/testing/test_unittest.py
+++ b/testing/test_unittest.py
@@ -144,6 +144,29 @@ def test_func2(self):
     reprec.assertoutcome(passed=2)
 
 
+def test_function_item_obj_is_instance(testdir):
+    """item.obj should be a bound method on unittest.TestCase function items (#5390)."""
+    testdir.makeconftest(
+        """
+        def pytest_runtest_makereport(item, call):
+            if call.when == 'call':
+                class_ = item.parent.obj
+                assert isinstance(item.obj.__self__, class_)
+    """
+    )
+    testdir.makepyfile(
+        """
+        import unittest
+
+        class Test(unittest.TestCase):
+            def test_foo(self):
+                pass
+    """
+    )
+    result = testdir.runpytest_inprocess()
+    result.stdout.fnmatch_lines(["* 1 passed in*"])
+
+
 def test_teardown(testdir):
     testpath = testdir.makepyfile(
         """
@@ -365,7 +388,7 @@ def test_hello(self):
 
 
 def test_testcase_totally_incompatible_exception_info(testdir):
-    item, = testdir.getitems(
+    (item,) = testdir.getitems(
         """
         from unittest import TestCase
         class MyTestCase(TestCase):
diff --git a/testing/test_warnings.py b/testing/test_warnings.py
index 092604d7db0..65f57e024f3 100644
--- a/testing/test_warnings.py
+++ b/testing/test_warnings.py
@@ -569,7 +569,7 @@ def test_hidden_by_system(self, testdir, monkeypatch):
         assert WARNINGS_SUMMARY_HEADER not in result.stdout.str()
 
 
-@pytest.mark.skipif(six.PY3, reason="Python 2 only issue")
+@pytest.mark.skipif(not six.PY2, reason="Python 2 only issue")
 def test_infinite_loop_warning_against_unicode_usage_py2(testdir):
     """
     We need to be careful when raising the warning about unicode usage with "warnings.warn"
diff --git a/tox.ini b/tox.ini
index 0b1be0d33fe..f75a0610482 100644
--- a/tox.ini
+++ b/tox.ini
@@ -11,6 +11,7 @@ envlist =
     py36
     py37
     py38
+    py39
     pypy
     pypy3
     {py27,py37}-{pexpect,xdist,twisted,numpy,pluggymaster}
@@ -93,7 +94,7 @@ commands =
 [testenv:regen]
 changedir = doc/en
 skipsdist = True
-basepython = python3.6
+basepython = python3
 deps =
     sphinx
     PyYAML
@@ -119,13 +120,14 @@ changedir = testing/freeze
 # Disable PEP 517 with pip, which does not work with PyInstaller currently.
 deps =
     pyinstaller
+    setuptools < 45.0.0
 commands =
     {envpython} create_executable.py
     {envpython} tox_run.py
 
 [testenv:release]
 decription = do a release, required posarg of the version number
-basepython = python3.6
+basepython = python3
 usedevelop = True
 passenv = *
 deps =
@@ -136,6 +138,17 @@ deps =
     wheel
 commands = python scripts/release.py {posargs}
 
+[testenv:publish_gh_release_notes]
+description = create GitHub release after deployment
+basepython = python3
+usedevelop = True
+passenv = GH_RELEASE_NOTES_TOKEN TRAVIS_TAG TRAVIS_REPO_SLUG
+deps =
+    github3.py
+    pypandoc
+commands = python scripts/publish_gh_release_notes.py
+
+
 [pytest]
 minversion = 2.0
 addopts = -ra -p pytester --strict-markers