Dec 19 04:36:32.767 INFO checking zhenhuanlee/rust_guess_no against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 04:36:32.768 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-4/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/zhenhuanlee/rust_guess_no:/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 04:36:33.204 INFO [stdout] de882c210dbbb9ce59181e669ed5042565a3405eda8507594f29e86d9823cafc
Dec 19 04:36:33.207 INFO running `"docker" "start" "-a" "de882c210dbbb9ce59181e669ed5042565a3405eda8507594f29e86d9823cafc"`
Dec 19 04:36:34.495 INFO [stderr]     Checking libc v0.2.40
Dec 19 04:36:35.629 INFO [stderr]     Checking rand v0.4.2
Dec 19 04:36:37.109 INFO [stderr]     Checking rand v0.3.22
Dec 19 04:36:37.292 INFO [stderr]     Checking guess v0.1.0 (/opt/crater/workdir)
Dec 19 04:36:37.668 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.20s
Dec 19 04:36:38.409 INFO running `"docker" "inspect" "de882c210dbbb9ce59181e669ed5042565a3405eda8507594f29e86d9823cafc"`
Dec 19 04:36:38.649 INFO running `"docker" "rm" "-f" "de882c210dbbb9ce59181e669ed5042565a3405eda8507594f29e86d9823cafc"`
Dec 19 04:36:38.948 INFO [stdout] de882c210dbbb9ce59181e669ed5042565a3405eda8507594f29e86d9823cafc