Dec 17 15:21:31.583 INFO checking simonewebdesign/rust_guessing_game against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 15:21:31.583 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-2/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/simonewebdesign/rust_guessing_game:/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 15:21:32.090 INFO [stdout] 2be1acbb539085046b71df488bff3380c97976999751fdd23b06b2a4939c2fe2
Dec 17 15:21:32.092 INFO running `"docker" "start" "-a" "2be1acbb539085046b71df488bff3380c97976999751fdd23b06b2a4939c2fe2"`
Dec 17 15:21:34.049 INFO [stderr]     Checking libc v0.2.15
Dec 17 15:21:34.872 INFO [stderr]     Checking rand v0.3.14
Dec 17 15:21:36.192 INFO [stderr]     Checking guessing_game v0.1.0 (/opt/crater/workdir)
Dec 17 15:21:36.626 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.62s
Dec 17 15:21:37.501 INFO running `"docker" "inspect" "2be1acbb539085046b71df488bff3380c97976999751fdd23b06b2a4939c2fe2"`
Dec 17 15:21:37.740 INFO running `"docker" "rm" "-f" "2be1acbb539085046b71df488bff3380c97976999751fdd23b06b2a4939c2fe2"`
Dec 17 15:21:37.920 INFO [stdout] 2be1acbb539085046b71df488bff3380c97976999751fdd23b06b2a4939c2fe2