Dec 13 01:44:38.144 INFO testing suelz/chapter_4 against try#aa49d8ef14939ddec0e34b346b60174a5673d48f for pr-56550
Dec 13 01:44:38.144 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-4/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-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 13 01:44:38.615 INFO [stdout] f7e9e6e9ea8084012cba927ec58804b43da8c07659307214544384a576a477eb
Dec 13 01:44:38.619 INFO running `"docker" "start" "-a" "f7e9e6e9ea8084012cba927ec58804b43da8c07659307214544384a576a477eb"`
Dec 13 01:44:39.728 INFO [stderr] usermod: no changes
Dec 13 01:44:39.787 INFO [stderr]    Compiling ch4 v0.1.0 (/source)
Dec 13 01:44:40.007 INFO [stderr] warning: unused variable: `word`
Dec 13 01:44:40.007 INFO [stderr]   --> src/main.rs:28:9
Dec 13 01:44:40.007 INFO [stderr]    |
Dec 13 01:44:40.007 INFO [stderr] 28 |     let word = first_word(&x);
Dec 13 01:44:40.007 INFO [stderr]    |         ^^^^ help: consider using `_word` instead
Dec 13 01:44:40.007 INFO [stderr]    |
Dec 13 01:44:40.007 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 13 01:44:40.007 INFO [stderr] 
Dec 13 01:44:40.008 INFO [stderr] warning: variable does not need to be mutable
Dec 13 01:44:40.008 INFO [stderr]   --> src/main.rs:26:9
Dec 13 01:44:40.008 INFO [stderr]    |
Dec 13 01:44:40.008 INFO [stderr] 26 |     let mut x = String::from("Conor Kennedy");
Dec 13 01:44:40.008 INFO [stderr]    |         ----^
Dec 13 01:44:40.008 INFO [stderr]    |         |
Dec 13 01:44:40.008 INFO [stderr]    |         help: remove this `mut`
Dec 13 01:44:40.015 INFO [stderr]    |
Dec 13 01:44:40.015 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 13 01:44:40.015 INFO [stderr] 
Dec 13 01:44:40.479 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.71s
Dec 13 01:44:40.479 INFO [stderr] su: No module specific data is present
Dec 13 01:44:40.970 INFO running `"docker" "inspect" "f7e9e6e9ea8084012cba927ec58804b43da8c07659307214544384a576a477eb"`
Dec 13 01:44:41.224 INFO running `"docker" "rm" "-f" "f7e9e6e9ea8084012cba927ec58804b43da8c07659307214544384a576a477eb"`
Dec 13 01:44:41.561 INFO [stdout] f7e9e6e9ea8084012cba927ec58804b43da8c07659307214544384a576a477eb
Dec 13 01:44:41.564 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-4/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-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 13 01:44:42.115 INFO [stdout] a6e47b985382899cf6f19df2d002ce398a66a21726ade2d2eb937b81fcda93df
Dec 13 01:44:42.123 INFO running `"docker" "start" "-a" "a6e47b985382899cf6f19df2d002ce398a66a21726ade2d2eb937b81fcda93df"`
Dec 13 01:44:43.263 INFO [stderr] usermod: no changes
Dec 13 01:44:43.355 INFO [stderr]    Compiling ch4 v0.1.0 (/source)
Dec 13 01:44:43.563 INFO [stderr] warning: unused variable: `word`
Dec 13 01:44:43.563 INFO [stderr]   --> src/main.rs:28:9
Dec 13 01:44:43.563 INFO [stderr]    |
Dec 13 01:44:43.563 INFO [stderr] 28 |     let word = first_word(&x);
Dec 13 01:44:43.563 INFO [stderr]    |         ^^^^ help: consider using `_word` instead
Dec 13 01:44:43.563 INFO [stderr]    |
Dec 13 01:44:43.563 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 13 01:44:43.563 INFO [stderr] 
Dec 13 01:44:43.622 INFO [stderr] warning: variable does not need to be mutable
Dec 13 01:44:43.623 INFO [stderr]   --> src/main.rs:26:9
Dec 13 01:44:43.623 INFO [stderr]    |
Dec 13 01:44:43.623 INFO [stderr] 26 |     let mut x = String::from("Conor Kennedy");
Dec 13 01:44:43.623 INFO [stderr]    |         ----^
Dec 13 01:44:43.623 INFO [stderr]    |         |
Dec 13 01:44:43.623 INFO [stderr]    |         help: remove this `mut`
Dec 13 01:44:43.623 INFO [stderr]    |
Dec 13 01:44:43.623 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 13 01:44:43.623 INFO [stderr] 
Dec 13 01:44:43.963 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.69s
Dec 13 01:44:43.966 INFO [stderr] su: No module specific data is present
Dec 13 01:44:44.524 INFO running `"docker" "inspect" "a6e47b985382899cf6f19df2d002ce398a66a21726ade2d2eb937b81fcda93df"`
Dec 13 01:44:44.732 INFO running `"docker" "rm" "-f" "a6e47b985382899cf6f19df2d002ce398a66a21726ade2d2eb937b81fcda93df"`
Dec 13 01:44:44.935 INFO [stdout] a6e47b985382899cf6f19df2d002ce398a66a21726ade2d2eb937b81fcda93df
Dec 13 01:44:44.937 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-4/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-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 13 01:44:45.556 INFO [stdout] 014b693be036dff7988780f183bf7a70c6262c0c4c8588999b9dcaa505a84306
Dec 13 01:44:45.559 INFO running `"docker" "start" "-a" "014b693be036dff7988780f183bf7a70c6262c0c4c8588999b9dcaa505a84306"`
Dec 13 01:44:46.170 INFO [stderr] usermod: no changes
Dec 13 01:44:46.204 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
Dec 13 01:44:46.204 INFO [stderr]      Running /target/debug/deps/ch4-66b9c56606c32b9c
Dec 13 01:44:46.205 INFO [stdout] 
Dec 13 01:44:46.205 INFO [stdout] running 0 tests
Dec 13 01:44:46.205 INFO [stdout] 
Dec 13 01:44:46.205 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 13 01:44:46.205 INFO [stdout] 
Dec 13 01:44:46.207 INFO [stderr] su: No module specific data is present
Dec 13 01:44:46.439 INFO running `"docker" "inspect" "014b693be036dff7988780f183bf7a70c6262c0c4c8588999b9dcaa505a84306"`
Dec 13 01:44:46.504 INFO running `"docker" "rm" "-f" "014b693be036dff7988780f183bf7a70c6262c0c4c8588999b9dcaa505a84306"`
Dec 13 01:44:46.604 INFO [stdout] 014b693be036dff7988780f183bf7a70c6262c0c4c8588999b9dcaa505a84306