Dec 17 21:45:13.481 INFO checking karataliu/showenv against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 21:45:13.481 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-6/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/karataliu/showenv:/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 21:45:14.080 INFO [stdout] ff2464ffa353ba39763681652bb94b8b84f6e94910e55e563099fe274c565fb6
Dec 17 21:45:14.082 INFO running `"docker" "start" "-a" "ff2464ffa353ba39763681652bb94b8b84f6e94910e55e563099fe274c565fb6"`
Dec 17 21:45:16.106 INFO [stderr]     Checking serde_yaml v0.7.3
Dec 17 21:45:16.107 INFO [stderr]     Checking hyper v0.10.13
Dec 17 21:45:21.029 INFO [stderr]     Checking nickel v0.10.1
Dec 17 21:45:23.036 INFO [stderr]     Checking showenv v0.1.0 (/opt/crater/workdir)
Dec 17 21:45:23.895 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.96s
Dec 17 21:45:24.550 INFO running `"docker" "inspect" "ff2464ffa353ba39763681652bb94b8b84f6e94910e55e563099fe274c565fb6"`
Dec 17 21:45:24.816 INFO running `"docker" "rm" "-f" "ff2464ffa353ba39763681652bb94b8b84f6e94910e55e563099fe274c565fb6"`
Dec 17 21:45:25.221 INFO [stdout] ff2464ffa353ba39763681652bb94b8b84f6e94910e55e563099fe274c565fb6