Dec 06 14:12:38.750 INFO testing Ermain-12/Introduction-to-Rust against master#906deae0790bd18681b937fe9a141a3c26cf1855 for pr-56514
Dec 06 14:12:38.751 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-3/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +906deae0790bd18681b937fe9a141a3c26cf1855-alt build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 06 14:12:38.899 INFO [stdout] 97ee534fe6c5ad36f3c24da4a980473f9668a96bb92aaf38446d93e3846c1667
Dec 06 14:12:38.901 INFO running `"docker" "start" "-a" "97ee534fe6c5ad36f3c24da4a980473f9668a96bb92aaf38446d93e3846c1667"`
Dec 06 14:12:39.230 INFO [stderr] usermod: no changes
Dec 06 14:12:39.285 INFO [stderr]    Compiling hello_world v0.1.0 (/source)
Dec 06 14:12:40.116 INFO [stderr] warning: variable does not need to be mutable
Dec 06 14:12:40.116 INFO [stderr]   --> src/main.rs:27:8
Dec 06 14:12:40.116 INFO [stderr]    |
Dec 06 14:12:40.116 INFO [stderr] 27 |    let mut twenty_one = my_vec.pop();
Dec 06 14:12:40.116 INFO [stderr]    |        ----^^^^^^^^^^
Dec 06 14:12:40.116 INFO [stderr]    |        |
Dec 06 14:12:40.116 INFO [stderr]    |        help: remove this `mut`
Dec 06 14:12:40.116 INFO [stderr]    |
Dec 06 14:12:40.116 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 06 14:12:40.116 INFO [stderr] 
Dec 06 14:12:40.921 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.68s
Dec 06 14:12:40.927 INFO [stderr] su: No module specific data is present
Dec 06 14:12:41.168 INFO running `"docker" "inspect" "97ee534fe6c5ad36f3c24da4a980473f9668a96bb92aaf38446d93e3846c1667"`
Dec 06 14:12:41.242 INFO running `"docker" "rm" "-f" "97ee534fe6c5ad36f3c24da4a980473f9668a96bb92aaf38446d93e3846c1667"`
Dec 06 14:12:41.315 INFO [stdout] 97ee534fe6c5ad36f3c24da4a980473f9668a96bb92aaf38446d93e3846c1667
Dec 06 14:12:41.317 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-3/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +906deae0790bd18681b937fe9a141a3c26cf1855-alt test --frozen --no-run" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 06 14:12:41.484 INFO [stdout] d14a46f1b3d216a63f84412849295c8ed1b79ad3e8b0e2f0e3198e23306e49f9
Dec 06 14:12:41.487 INFO running `"docker" "start" "-a" "d14a46f1b3d216a63f84412849295c8ed1b79ad3e8b0e2f0e3198e23306e49f9"`
Dec 06 14:12:41.915 INFO [stderr] usermod: no changes
Dec 06 14:12:41.978 INFO [stderr]    Compiling hello_world v0.1.0 (/source)
Dec 06 14:12:42.775 INFO [stderr] warning: variable does not need to be mutable
Dec 06 14:12:42.775 INFO [stderr]   --> src/main.rs:27:8
Dec 06 14:12:42.775 INFO [stderr]    |
Dec 06 14:12:42.775 INFO [stderr] 27 |    let mut twenty_one = my_vec.pop();
Dec 06 14:12:42.775 INFO [stderr]    |        ----^^^^^^^^^^
Dec 06 14:12:42.775 INFO [stderr]    |        |
Dec 06 14:12:42.775 INFO [stderr]    |        help: remove this `mut`
Dec 06 14:12:42.775 INFO [stderr]    |
Dec 06 14:12:42.775 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 06 14:12:42.775 INFO [stderr] 
Dec 06 14:12:42.989 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.04s
Dec 06 14:12:42.993 INFO [stderr] su: No module specific data is present
Dec 06 14:12:43.258 INFO running `"docker" "inspect" "d14a46f1b3d216a63f84412849295c8ed1b79ad3e8b0e2f0e3198e23306e49f9"`
Dec 06 14:12:43.342 INFO running `"docker" "rm" "-f" "d14a46f1b3d216a63f84412849295c8ed1b79ad3e8b0e2f0e3198e23306e49f9"`
Dec 06 14:12:43.430 INFO [stdout] d14a46f1b3d216a63f84412849295c8ed1b79ad3e8b0e2f0e3198e23306e49f9
Dec 06 14:12:43.432 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-3/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +906deae0790bd18681b937fe9a141a3c26cf1855-alt test --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 06 14:12:43.579 INFO [stdout] f00503ab92b94774c409f1532a293bef51265eebe2e0a7f5c3dd73032d3fef48
Dec 06 14:12:43.581 INFO running `"docker" "start" "-a" "f00503ab92b94774c409f1532a293bef51265eebe2e0a7f5c3dd73032d3fef48"`
Dec 06 14:12:43.966 INFO [stderr] usermod: no changes
Dec 06 14:12:44.011 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
Dec 06 14:12:44.012 INFO [stderr]      Running /target/debug/deps/hello_world-871204d26125397a
Dec 06 14:12:44.014 INFO [stdout] 
Dec 06 14:12:44.014 INFO [stdout] running 0 tests
Dec 06 14:12:44.014 INFO [stdout] 
Dec 06 14:12:44.014 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 06 14:12:44.014 INFO [stdout] 
Dec 06 14:12:44.015 INFO [stderr] su: No module specific data is present
Dec 06 14:12:44.324 INFO running `"docker" "inspect" "f00503ab92b94774c409f1532a293bef51265eebe2e0a7f5c3dd73032d3fef48"`
Dec 06 14:12:44.387 INFO running `"docker" "rm" "-f" "f00503ab92b94774c409f1532a293bef51265eebe2e0a7f5c3dd73032d3fef48"`
Dec 06 14:12:44.466 INFO [stdout] f00503ab92b94774c409f1532a293bef51265eebe2e0a7f5c3dd73032d3fef48