Dec 05 05:56:14.736 INFO testing suelz/chapter_4 against master#906deae0790bd18681b937fe9a141a3c26cf1855 for pr-56514
Dec 05 05:56:14.737 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-1/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/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 05 05:56:15.000 INFO [stdout] f85c5cecc4ca6995cffc10ba3b2a2db478c45e00b74ae0ed479e719cc4b7910d
Dec 05 05:56:15.002 INFO running `"docker" "start" "-a" "f85c5cecc4ca6995cffc10ba3b2a2db478c45e00b74ae0ed479e719cc4b7910d"`
Dec 05 05:56:15.618 INFO [stderr] usermod: no changes
Dec 05 05:56:15.670 INFO [stderr]    Compiling ch4 v0.1.0 (/source)
Dec 05 05:56:15.839 INFO [stderr] warning: unused variable: `word`
Dec 05 05:56:15.839 INFO [stderr]   --> src/main.rs:28:9
Dec 05 05:56:15.839 INFO [stderr]    |
Dec 05 05:56:15.839 INFO [stderr] 28 |     let word = first_word(&x);
Dec 05 05:56:15.839 INFO [stderr]    |         ^^^^ help: consider using `_word` instead
Dec 05 05:56:15.839 INFO [stderr]    |
Dec 05 05:56:15.839 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 05 05:56:15.839 INFO [stderr] 
Dec 05 05:56:15.848 INFO [stderr] warning: variable does not need to be mutable
Dec 05 05:56:15.848 INFO [stderr]   --> src/main.rs:26:9
Dec 05 05:56:15.848 INFO [stderr]    |
Dec 05 05:56:15.848 INFO [stderr] 26 |     let mut x = String::from("Conor Kennedy");
Dec 05 05:56:15.848 INFO [stderr]    |         ----^
Dec 05 05:56:15.848 INFO [stderr]    |         |
Dec 05 05:56:15.849 INFO [stderr]    |         help: remove this `mut`
Dec 05 05:56:15.849 INFO [stderr]    |
Dec 05 05:56:15.849 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 05 05:56:15.849 INFO [stderr] 
Dec 05 05:56:16.120 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.47s
Dec 05 05:56:16.120 INFO [stderr] su: No module specific data is present
Dec 05 05:56:16.390 INFO running `"docker" "inspect" "f85c5cecc4ca6995cffc10ba3b2a2db478c45e00b74ae0ed479e719cc4b7910d"`
Dec 05 05:56:16.486 INFO running `"docker" "rm" "-f" "f85c5cecc4ca6995cffc10ba3b2a2db478c45e00b74ae0ed479e719cc4b7910d"`
Dec 05 05:56:16.565 INFO [stdout] f85c5cecc4ca6995cffc10ba3b2a2db478c45e00b74ae0ed479e719cc4b7910d
Dec 05 05:56:16.567 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-1/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/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 05 05:56:16.780 INFO [stdout] ebf3211fdc0843f317255de225892b93789c5402610d5677f5bcbdf909f5b458
Dec 05 05:56:16.786 INFO running `"docker" "start" "-a" "ebf3211fdc0843f317255de225892b93789c5402610d5677f5bcbdf909f5b458"`
Dec 05 05:56:17.332 INFO [stderr] usermod: no changes
Dec 05 05:56:17.364 INFO [stderr]    Compiling ch4 v0.1.0 (/source)
Dec 05 05:56:17.539 INFO [stderr] warning: unused variable: `word`
Dec 05 05:56:17.539 INFO [stderr]   --> src/main.rs:28:9
Dec 05 05:56:17.539 INFO [stderr]    |
Dec 05 05:56:17.539 INFO [stderr] 28 |     let word = first_word(&x);
Dec 05 05:56:17.539 INFO [stderr]    |         ^^^^ help: consider using `_word` instead
Dec 05 05:56:17.539 INFO [stderr]    |
Dec 05 05:56:17.539 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 05 05:56:17.539 INFO [stderr] 
Dec 05 05:56:17.543 INFO [stderr] warning: variable does not need to be mutable
Dec 05 05:56:17.545 INFO [stderr]   --> src/main.rs:26:9
Dec 05 05:56:17.545 INFO [stderr]    |
Dec 05 05:56:17.545 INFO [stderr] 26 |     let mut x = String::from("Conor Kennedy");
Dec 05 05:56:17.545 INFO [stderr]    |         ----^
Dec 05 05:56:17.545 INFO [stderr]    |         |
Dec 05 05:56:17.545 INFO [stderr]    |         help: remove this `mut`
Dec 05 05:56:17.545 INFO [stderr]    |
Dec 05 05:56:17.545 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 05 05:56:17.545 INFO [stderr] 
Dec 05 05:56:17.766 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.42s
Dec 05 05:56:17.769 INFO [stderr] su: No module specific data is present
Dec 05 05:56:18.016 INFO running `"docker" "inspect" "ebf3211fdc0843f317255de225892b93789c5402610d5677f5bcbdf909f5b458"`
Dec 05 05:56:18.158 INFO running `"docker" "rm" "-f" "ebf3211fdc0843f317255de225892b93789c5402610d5677f5bcbdf909f5b458"`
Dec 05 05:56:18.285 INFO [stdout] ebf3211fdc0843f317255de225892b93789c5402610d5677f5bcbdf909f5b458
Dec 05 05:56:18.290 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-1/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/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 05 05:56:18.532 INFO [stdout] a751488887380191109bbe96909b95a6833d193cef416a94eeaf9fbb5a8a7771
Dec 05 05:56:18.538 INFO running `"docker" "start" "-a" "a751488887380191109bbe96909b95a6833d193cef416a94eeaf9fbb5a8a7771"`
Dec 05 05:56:19.260 INFO [stderr] usermod: no changes
Dec 05 05:56:19.290 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
Dec 05 05:56:19.291 INFO [stderr]      Running /target/debug/deps/ch4-c837629e69303c53
Dec 05 05:56:19.299 INFO [stdout] 
Dec 05 05:56:19.299 INFO [stdout] running 0 tests
Dec 05 05:56:19.299 INFO [stdout] 
Dec 05 05:56:19.299 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 05 05:56:19.299 INFO [stdout] 
Dec 05 05:56:19.304 INFO [stderr] su: No module specific data is present
Dec 05 05:56:19.810 INFO running `"docker" "inspect" "a751488887380191109bbe96909b95a6833d193cef416a94eeaf9fbb5a8a7771"`
Dec 05 05:56:19.950 INFO running `"docker" "rm" "-f" "a751488887380191109bbe96909b95a6833d193cef416a94eeaf9fbb5a8a7771"`
Dec 05 05:56:20.241 INFO [stdout] a751488887380191109bbe96909b95a6833d193cef416a94eeaf9fbb5a8a7771