Dec 19 06:38:00.565 INFO checking ttakamura/binary-nn-rust against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 06:38:00.565 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-0/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 06:38:01.113 INFO [stdout] 0b5ce3af14ab185c4b0823a6d750b4ea23a810885aa22c23b36d6e6605832e10
Dec 19 06:38:01.115 INFO running `"docker" "start" "-a" "0b5ce3af14ab185c4b0823a6d750b4ea23a810885aa22c23b36d6e6605832e10"`
Dec 19 06:38:03.177 INFO [stderr]     Checking serde v0.9.12
Dec 19 06:38:03.177 INFO [stderr]    Compiling syn v0.11.9
Dec 19 06:38:10.588 INFO [stderr]    Compiling serde_codegen_internals v0.14.2
Dec 19 06:38:12.874 INFO [stderr]    Compiling serde_derive v0.9.12
Dec 19 06:38:20.460 INFO [stderr]     Checking bincode v1.0.0-alpha6
Dec 19 06:38:21.429 INFO [stderr]     Checking binary_nn v0.1.0 (/opt/crater/workdir)
Dec 19 06:38:25.024 INFO [stderr] warning: variable does not need to be mutable
Dec 19 06:38:25.024 INFO [stderr]   --> tests/bitmatrix_test.rs:40:9
Dec 19 06:38:25.024 INFO [stderr]    |
Dec 19 06:38:25.024 INFO [stderr] 40 |     let mut x = BitMatrix2::falses((3, 34));
Dec 19 06:38:25.024 INFO [stderr]    |         ----^
Dec 19 06:38:25.024 INFO [stderr]    |         |
Dec 19 06:38:25.025 INFO [stderr]    |         help: remove this `mut`
Dec 19 06:38:25.025 INFO [stderr]    |
Dec 19 06:38:25.025 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 06:38:25.025 INFO [stderr] 
Dec 19 06:38:25.025 INFO [stderr] warning: variable does not need to be mutable
Dec 19 06:38:25.025 INFO [stderr]   --> tests/bitmatrix_test.rs:41:9
Dec 19 06:38:25.025 INFO [stderr]    |
Dec 19 06:38:25.025 INFO [stderr] 41 |     let mut y = BitMatrix2::falses((34, 2));
Dec 19 06:38:25.025 INFO [stderr]    |         ----^
Dec 19 06:38:25.025 INFO [stderr]    |         |
Dec 19 06:38:25.025 INFO [stderr]    |         help: remove this `mut`
Dec 19 06:38:25.025 INFO [stderr] 
Dec 19 06:38:25.981 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.87s
Dec 19 06:38:27.570 INFO running `"docker" "inspect" "0b5ce3af14ab185c4b0823a6d750b4ea23a810885aa22c23b36d6e6605832e10"`
Dec 19 06:38:27.952 INFO running `"docker" "rm" "-f" "0b5ce3af14ab185c4b0823a6d750b4ea23a810885aa22c23b36d6e6605832e10"`
Dec 19 06:38:28.257 INFO [stdout] 0b5ce3af14ab185c4b0823a6d750b4ea23a810885aa22c23b36d6e6605832e10