Dec 17 13:05:57.501 INFO checking ttakamura/binary-nn-rust against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 13:05:57.501 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-2/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 13:05:58.006 INFO [stdout] a4b4f14eb1477f97343106b17ff28e9c0e65ed623b9027fc8962466d53014a07
Dec 17 13:05:58.008 INFO running `"docker" "start" "-a" "a4b4f14eb1477f97343106b17ff28e9c0e65ed623b9027fc8962466d53014a07"`
Dec 17 13:06:00.722 INFO [stderr]     Checking serde v0.9.12
Dec 17 13:06:00.728 INFO [stderr]    Compiling syn v0.11.9
Dec 17 13:06:08.493 INFO [stderr]    Compiling serde_codegen_internals v0.14.2
Dec 17 13:06:11.165 INFO [stderr]    Compiling serde_derive v0.9.12
Dec 17 13:06:15.199 INFO [stderr]     Checking bincode v1.0.0-alpha6
Dec 17 13:06:18.236 INFO [stderr]     Checking binary_nn v0.1.0 (/opt/crater/workdir)
Dec 17 13:06:21.340 INFO [stderr] warning: variable does not need to be mutable
Dec 17 13:06:21.340 INFO [stderr]   --> tests/bitmatrix_test.rs:40:9
Dec 17 13:06:21.340 INFO [stderr]    |
Dec 17 13:06:21.340 INFO [stderr] 40 |     let mut x = BitMatrix2::falses((3, 34));
Dec 17 13:06:21.340 INFO [stderr]    |         ----^
Dec 17 13:06:21.340 INFO [stderr]    |         |
Dec 17 13:06:21.340 INFO [stderr]    |         help: remove this `mut`
Dec 17 13:06:21.340 INFO [stderr]    |
Dec 17 13:06:21.340 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 17 13:06:21.340 INFO [stderr] 
Dec 17 13:06:21.340 INFO [stderr] warning: variable does not need to be mutable
Dec 17 13:06:21.340 INFO [stderr]   --> tests/bitmatrix_test.rs:41:9
Dec 17 13:06:21.340 INFO [stderr]    |
Dec 17 13:06:21.340 INFO [stderr] 41 |     let mut y = BitMatrix2::falses((34, 2));
Dec 17 13:06:21.340 INFO [stderr]    |         ----^
Dec 17 13:06:21.340 INFO [stderr]    |         |
Dec 17 13:06:21.340 INFO [stderr]    |         help: remove this `mut`
Dec 17 13:06:21.340 INFO [stderr] 
Dec 17 13:06:22.005 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.34s
Dec 17 13:06:22.988 INFO running `"docker" "inspect" "a4b4f14eb1477f97343106b17ff28e9c0e65ed623b9027fc8962466d53014a07"`
Dec 17 13:06:23.346 INFO running `"docker" "rm" "-f" "a4b4f14eb1477f97343106b17ff28e9c0e65ed623b9027fc8962466d53014a07"`
Dec 17 13:06:23.665 INFO [stdout] a4b4f14eb1477f97343106b17ff28e9c0e65ed623b9027fc8962466d53014a07