Dec 19 08:31:27.951 INFO checking soenkehahn/rust-playground against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 08:31:27.951 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-7/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/soenkehahn/rust-playground:/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 08:31:28.416 INFO [stdout] 54484d702498917b9841a0405c25e308165912cf53940b3249fc75cb90875e33
Dec 19 08:31:28.424 INFO running `"docker" "start" "-a" "54484d702498917b9841a0405c25e308165912cf53940b3249fc75cb90875e33"`
Dec 19 08:31:29.936 INFO [stderr]    Compiling num-traits v0.2.4
Dec 19 08:31:32.618 INFO [stderr]     Checking num-integer v0.1.38
Dec 19 08:31:33.008 INFO [stderr]     Checking num-bigint v0.2.0
Dec 19 08:31:34.684 INFO [stderr]     Checking playground v0.1.0 (/opt/crater/workdir)
Dec 19 08:31:35.000 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.13s
Dec 19 08:31:35.725 INFO running `"docker" "inspect" "54484d702498917b9841a0405c25e308165912cf53940b3249fc75cb90875e33"`
Dec 19 08:31:36.038 INFO running `"docker" "rm" "-f" "54484d702498917b9841a0405c25e308165912cf53940b3249fc75cb90875e33"`
Dec 19 08:31:36.230 INFO [stdout] 54484d702498917b9841a0405c25e308165912cf53940b3249fc75cb90875e33