Dec 19 14:47:50.405 INFO checking julienXX/mocker against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 14:47:50.405 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/julienXX/mocker:/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 14:47:51.050 INFO [stdout] c8eb2f1b69f7db7a29958c92f1f14917a71fce9f31291ac62294378e7639b95d
Dec 19 14:47:51.054 INFO running `"docker" "start" "-a" "c8eb2f1b69f7db7a29958c92f1f14917a71fce9f31291ac62294378e7639b95d"`
Dec 19 14:47:53.100 INFO [stderr]     Checking toml v0.4.2
Dec 19 14:47:53.134 INFO [stderr]     Checking iron v0.5.1
Dec 19 14:47:54.607 INFO [stderr]     Checking router v0.5.1
Dec 19 14:47:56.195 INFO [stderr]     Checking mocker v0.1.0 (/opt/crater/workdir)
Dec 19 14:47:57.122 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.19s
Dec 19 14:47:58.200 INFO running `"docker" "inspect" "c8eb2f1b69f7db7a29958c92f1f14917a71fce9f31291ac62294378e7639b95d"`
Dec 19 14:47:58.502 INFO running `"docker" "rm" "-f" "c8eb2f1b69f7db7a29958c92f1f14917a71fce9f31291ac62294378e7639b95d"`
Dec 19 14:47:58.812 INFO [stdout] c8eb2f1b69f7db7a29958c92f1f14917a71fce9f31291ac62294378e7639b95d