Dec 19 06:38:03.088 INFO checking ttakamura/binary-nn-rust against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 06:38:03.088 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-2/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/ttakamura/binary-nn-rust:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 06:38:03.588 INFO [stdout] 2f7e0fdd7d5ddbaa6c5e46d84dfbf0a711dafce747816741c61cefdb03fc3f77
Dec 19 06:38:03.590 INFO running `"docker" "start" "-a" "2f7e0fdd7d5ddbaa6c5e46d84dfbf0a711dafce747816741c61cefdb03fc3f77"`
Dec 19 06:38:05.664 INFO [stderr]     Checking serde v0.9.12
Dec 19 06:38:05.672 INFO [stderr]    Compiling syn v0.11.9
Dec 19 06:38:13.526 INFO [stderr]    Compiling serde_codegen_internals v0.14.2
Dec 19 06:38:16.348 INFO [stderr]    Compiling serde_derive v0.9.12
Dec 19 06:38:22.423 INFO [stderr]     Checking bincode v1.0.0-alpha6
Dec 19 06:38:24.412 INFO [stderr]     Checking binary_nn v0.1.0 (/opt/crater/workdir)
Dec 19 06:38:28.580 INFO [stderr] warning: variable does not need to be mutable
Dec 19 06:38:28.580 INFO [stderr]   --> tests/bitmatrix_test.rs:40:9
Dec 19 06:38:28.580 INFO [stderr]    |
Dec 19 06:38:28.580 INFO [stderr] 40 |     let mut x = BitMatrix2::falses((3, 34));
Dec 19 06:38:28.584 INFO [stderr]    |         ----^
Dec 19 06:38:28.584 INFO [stderr]    |         |
Dec 19 06:38:28.584 INFO [stderr]    |         help: remove this `mut`
Dec 19 06:38:28.584 INFO [stderr]    |
Dec 19 06:38:28.584 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 06:38:28.584 INFO [stderr] 
Dec 19 06:38:28.585 INFO [stderr] warning: variable does not need to be mutable
Dec 19 06:38:28.585 INFO [stderr]   --> tests/bitmatrix_test.rs:41:9
Dec 19 06:38:28.585 INFO [stderr]    |
Dec 19 06:38:28.585 INFO [stderr] 41 |     let mut y = BitMatrix2::falses((34, 2));
Dec 19 06:38:28.586 INFO [stderr]    |         ----^
Dec 19 06:38:28.586 INFO [stderr]    |         |
Dec 19 06:38:28.586 INFO [stderr]    |         help: remove this `mut`
Dec 19 06:38:28.586 INFO [stderr] 
Dec 19 06:38:28.728 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.14s
Dec 19 06:38:29.910 INFO running `"docker" "inspect" "2f7e0fdd7d5ddbaa6c5e46d84dfbf0a711dafce747816741c61cefdb03fc3f77"`
Dec 19 06:38:30.300 INFO running `"docker" "rm" "-f" "2f7e0fdd7d5ddbaa6c5e46d84dfbf0a711dafce747816741c61cefdb03fc3f77"`
Dec 19 06:38:30.732 INFO [stdout] 2f7e0fdd7d5ddbaa6c5e46d84dfbf0a711dafce747816741c61cefdb03fc3f77