Dec 18 17:16:18.225 INFO checking cryogen_prelude-0.1.0 against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 17:16:18.225 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/reg/cryogen_prelude/0.1.0:/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 17:16:18.682 INFO [stdout] 8c283cd743fc50ceffc6209d52d669a9191640f46de7543e22c6e5e9f4ae700f
Dec 18 17:16:18.686 INFO running `"docker" "start" "-a" "8c283cd743fc50ceffc6209d52d669a9191640f46de7543e22c6e5e9f4ae700f"`
Dec 18 17:16:19.409 INFO [stderr] warning: unused manifest key: package.license_file
Dec 18 17:16:19.536 INFO [stderr]     Checking clap v2.20.5
Dec 18 17:16:19.545 INFO [stderr]     Checking tera v0.8.1
Dec 18 17:16:25.380 INFO [stderr]     Checking cryogen_prelude v0.1.0 (/opt/crater/workdir)
Dec 18 17:16:26.336 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.93s
Dec 18 17:16:27.070 INFO running `"docker" "inspect" "8c283cd743fc50ceffc6209d52d669a9191640f46de7543e22c6e5e9f4ae700f"`
Dec 18 17:16:27.284 INFO running `"docker" "rm" "-f" "8c283cd743fc50ceffc6209d52d669a9191640f46de7543e22c6e5e9f4ae700f"`
Dec 18 17:16:27.488 INFO [stdout] 8c283cd743fc50ceffc6209d52d669a9191640f46de7543e22c6e5e9f4ae700f