Download rust_g release rather than building it

.travis.yml

@@ -47,30 +47,25 @@ matrix:
             - ubuntu-toolchain-r-test
           packages:
             - libstdc++6:i386
-            - libssl-dev:i386
             - gcc-multilib
             - g++-7
             - g++-7-multilib
             - libmariadb-client-lgpl-dev:i386
             - libmariadbd-dev
       cache:
         directories:
-          - $HOME/.cargo
-          - $HOME/.rustup
           - $HOME/BYOND
           - $HOME/libmariadb
       install:
         - tools/travis/install_byond.sh
         - source $HOME/BYOND/byond/bin/byondsetup
         - tools/travis/install_libmariadb.sh
-        - curl https://sh.rustup.rs -sSf | sh -s -- -y --default-host i686-unknown-linux-gnu
-        - source ~/.cargo/env
+        - tools/travis/install_rust_g.sh
       before_script:
         - mysql -u root -e 'CREATE DATABASE tg_travis;'
         - mysql -u root tg_travis < SQL/tgstation_schema.sql
         - mysql -u root -e 'CREATE DATABASE tg_travis_prefixed;'
         - mysql -u root tg_travis_prefixed < SQL/tgstation_schema_prefixed.sql
-        - tools/travis/build_rust_g.sh
         - tools/travis/build_bsql.sh
       script:
         - tools/travis/dm.sh -DTRAVISBUILDING tgstation.dme || travis_terminate 1

tools/travis/install_rust_g.sh

@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+source dependencies.sh
+
+wget -O ~/.byond/bin/rust_g "https://github.com/tgstation/rust-g/releases/download/$RUST_G_VERSION/librust_g.so"
+chmod +x ~/.byond/bin/rust_g