Fix: Skip invalid log lines in pytest_v2 log parser.

[buaabarty]

Description

This pull request addresses an IndexError encountered in the parse_log_pytest_v2 function within the log_parsers.py file. The error occurred when the function attempted to access an index in the test_case list that did not exist, specifically when processing invalid log lines.

Changes Made

• Added a conditional check to ensure that the test_case list has the expected length before attempting to access its elements. This prevents the IndexError by skipping over log lines that do not conform to the expected format.

Error Log

The error was observed with the following log entry:

2024-12-04 23:58:13,842 - ERROR - Error in evaluating model for astropy__astropy-14995: list index out of range
Traceback (most recent call last):
  ...
  File "/home/barty/miniconda3/lib/python3.12/site-packages/swebench/harness/log_parsers.py", line 158, in parse_log_pytest_v2
    test_status_map[test_case[0]] = test_case[1]
                                    ~~~~~~~~~^^^
IndexError: list index out of range

Impact

This fix improves the robustness of the log parser by ensuring it can handle unexpected log formats without crashing, thereby enhancing the overall stability of the evaluation process.

[john-b-yang]

Thanks for this fix @buaabarty, merging!