Dec 05 05:56:12.456 INFO testing suelz/chapter_4 against try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468 for pr-56514
Dec 05 05:56:12.456 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-2/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/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 +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-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 05 05:56:12.922 INFO [stdout] 354719da7c66c6108dd4d839809638213b32a1188f163ab7202f4bfe0cdd8006
Dec 05 05:56:12.928 INFO running `"docker" "start" "-a" "354719da7c66c6108dd4d839809638213b32a1188f163ab7202f4bfe0cdd8006"`
Dec 05 05:56:13.918 INFO [stderr] usermod: no changes
Dec 05 05:56:13.956 INFO [stderr]    Compiling ch4 v0.1.0 (/source)
Dec 05 05:56:14.167 INFO [stderr] warning: unused variable: `word`
Dec 05 05:56:14.167 INFO [stderr]   --> src/main.rs:28:9
Dec 05 05:56:14.167 INFO [stderr]    |
Dec 05 05:56:14.167 INFO [stderr] 28 |     let word = first_word(&x);
Dec 05 05:56:14.167 INFO [stderr]    |         ^^^^ help: consider using `_word` instead
Dec 05 05:56:14.167 INFO [stderr]    |
Dec 05 05:56:14.167 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 05 05:56:14.167 INFO [stderr] 
Dec 05 05:56:14.176 INFO [stderr] warning: variable does not need to be mutable
Dec 05 05:56:14.176 INFO [stderr]   --> src/main.rs:26:9
Dec 05 05:56:14.176 INFO [stderr]    |
Dec 05 05:56:14.176 INFO [stderr] 26 |     let mut x = String::from("Conor Kennedy");
Dec 05 05:56:14.176 INFO [stderr]    |         ----^
Dec 05 05:56:14.176 INFO [stderr]    |         |
Dec 05 05:56:14.176 INFO [stderr]    |         help: remove this `mut`
Dec 05 05:56:14.176 INFO [stderr]    |
Dec 05 05:56:14.176 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 05 05:56:14.176 INFO [stderr] 
Dec 05 05:56:14.641 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
Dec 05 05:56:14.643 INFO [stderr] su: No module specific data is present
Dec 05 05:56:14.971 INFO running `"docker" "inspect" "354719da7c66c6108dd4d839809638213b32a1188f163ab7202f4bfe0cdd8006"`
Dec 05 05:56:15.086 INFO running `"docker" "rm" "-f" "354719da7c66c6108dd4d839809638213b32a1188f163ab7202f4bfe0cdd8006"`
Dec 05 05:56:15.180 INFO [stdout] 354719da7c66c6108dd4d839809638213b32a1188f163ab7202f4bfe0cdd8006
Dec 05 05:56:15.185 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-2/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/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 +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-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 05 05:56:15.480 INFO [stdout] bf0f2741db901a4a9050eb7a471948f02e8eec1bfb81d914d596b4e579927166
Dec 05 05:56:15.486 INFO running `"docker" "start" "-a" "bf0f2741db901a4a9050eb7a471948f02e8eec1bfb81d914d596b4e579927166"`
Dec 05 05:56:15.888 INFO [stderr] usermod: no changes
Dec 05 05:56:15.916 INFO [stderr]    Compiling ch4 v0.1.0 (/source)
Dec 05 05:56:16.088 INFO [stderr] warning: unused variable: `word`
Dec 05 05:56:16.088 INFO [stderr]   --> src/main.rs:28:9
Dec 05 05:56:16.088 INFO [stderr]    |
Dec 05 05:56:16.088 INFO [stderr] 28 |     let word = first_word(&x);
Dec 05 05:56:16.088 INFO [stderr]    |         ^^^^ help: consider using `_word` instead
Dec 05 05:56:16.088 INFO [stderr]    |
Dec 05 05:56:16.088 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 05 05:56:16.088 INFO [stderr] 
Dec 05 05:56:16.096 INFO [stderr] warning: variable does not need to be mutable
Dec 05 05:56:16.096 INFO [stderr]   --> src/main.rs:26:9
Dec 05 05:56:16.096 INFO [stderr]    |
Dec 05 05:56:16.096 INFO [stderr] 26 |     let mut x = String::from("Conor Kennedy");
Dec 05 05:56:16.096 INFO [stderr]    |         ----^
Dec 05 05:56:16.096 INFO [stderr]    |         |
Dec 05 05:56:16.096 INFO [stderr]    |         help: remove this `mut`
Dec 05 05:56:16.096 INFO [stderr]    |
Dec 05 05:56:16.096 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 05 05:56:16.096 INFO [stderr] 
Dec 05 05:56:16.287 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.38s
Dec 05 05:56:16.289 INFO [stderr] su: No module specific data is present
Dec 05 05:56:16.598 INFO running `"docker" "inspect" "bf0f2741db901a4a9050eb7a471948f02e8eec1bfb81d914d596b4e579927166"`
Dec 05 05:56:16.716 INFO running `"docker" "rm" "-f" "bf0f2741db901a4a9050eb7a471948f02e8eec1bfb81d914d596b4e579927166"`
Dec 05 05:56:16.864 INFO [stdout] bf0f2741db901a4a9050eb7a471948f02e8eec1bfb81d914d596b4e579927166
Dec 05 05:56:16.866 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-2/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/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 +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-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 05 05:56:17.096 INFO [stdout] 825ea994b85600431b1f1b2a54a2329db06403ef9e9cf8c9f1047a79895045e0
Dec 05 05:56:17.098 INFO running `"docker" "start" "-a" "825ea994b85600431b1f1b2a54a2329db06403ef9e9cf8c9f1047a79895045e0"`
Dec 05 05:56:17.615 INFO [stderr] usermod: no changes
Dec 05 05:56:17.642 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
Dec 05 05:56:17.642 INFO [stderr]      Running /target/debug/deps/ch4-84ae5aecc01f4d7a
Dec 05 05:56:17.645 INFO [stdout] 
Dec 05 05:56:17.645 INFO [stdout] running 0 tests
Dec 05 05:56:17.645 INFO [stdout] 
Dec 05 05:56:17.645 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 05 05:56:17.645 INFO [stdout] 
Dec 05 05:56:17.646 INFO [stderr] su: No module specific data is present
Dec 05 05:56:17.964 INFO running `"docker" "inspect" "825ea994b85600431b1f1b2a54a2329db06403ef9e9cf8c9f1047a79895045e0"`
Dec 05 05:56:18.041 INFO running `"docker" "rm" "-f" "825ea994b85600431b1f1b2a54a2329db06403ef9e9cf8c9f1047a79895045e0"`
Dec 05 05:56:18.169 INFO [stdout] 825ea994b85600431b1f1b2a54a2329db06403ef9e9cf8c9f1047a79895045e0