Dec 18 03:01:14.075 INFO checking brianboyko/my-first-rust-program against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 03:01:14.076 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-4/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/brianboyko/my-first-rust-program:/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 18 03:01:14.250 INFO [stdout] 805ee870f68b5ca6dfb31533a2bd7db04b5623ffc4ed6aa112cd8767c19e4d2c
Dec 18 03:01:14.251 INFO running `"docker" "start" "-a" "805ee870f68b5ca6dfb31533a2bd7db04b5623ffc4ed6aa112cd8767c19e4d2c"`
Dec 18 03:01:14.880 INFO [stderr]    Compiling libc v0.2.44
Dec 18 03:01:16.376 INFO [stderr]     Checking rand v0.6.1
Dec 18 03:01:18.444 INFO [stderr]     Checking guessing_game v0.1.0 (/opt/crater/workdir)
Dec 18 03:01:18.736 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.95s
Dec 18 03:01:19.080 INFO running `"docker" "inspect" "805ee870f68b5ca6dfb31533a2bd7db04b5623ffc4ed6aa112cd8767c19e4d2c"`
Dec 18 03:01:19.200 INFO running `"docker" "rm" "-f" "805ee870f68b5ca6dfb31533a2bd7db04b5623ffc4ed6aa112cd8767c19e4d2c"`
Dec 18 03:01:19.428 INFO [stdout] 805ee870f68b5ca6dfb31533a2bd7db04b5623ffc4ed6aa112cd8767c19e4d2c