Dec 19 13:16:03.156 INFO checking mafraba/chip8r against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 13:16:03.156 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-5/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/mafraba/chip8r:/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 13:16:03.672 INFO [stdout] 7750f8342184c6d343a696eb491d02ba0aa41a460654548935be6bdb0c4d7fc1
Dec 19 13:16:03.678 INFO running `"docker" "start" "-a" "7750f8342184c6d343a696eb491d02ba0aa41a460654548935be6bdb0c4d7fc1"`
Dec 19 13:16:05.444 INFO [stderr]     Checking term_size v0.2.3
Dec 19 13:16:05.444 INFO [stderr]     Checking termion v1.5.1
Dec 19 13:16:05.447 INFO [stderr]     Checking chan v0.1.19
Dec 19 13:16:05.924 INFO [stderr]     Checking clap v2.19.3
Dec 19 13:16:11.025 INFO [stderr]     Checking chip8r v0.1.0 (/opt/crater/workdir)
Dec 19 13:16:13.056 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.73s
Dec 19 13:16:13.794 INFO running `"docker" "inspect" "7750f8342184c6d343a696eb491d02ba0aa41a460654548935be6bdb0c4d7fc1"`
Dec 19 13:16:14.082 INFO running `"docker" "rm" "-f" "7750f8342184c6d343a696eb491d02ba0aa41a460654548935be6bdb0c4d7fc1"`
Dec 19 13:16:14.416 INFO [stdout] 7750f8342184c6d343a696eb491d02ba0aa41a460654548935be6bdb0c4d7fc1