[INFO] updating cached repository mickjohn/red_or_black
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mickjohn/red_or_black
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mickjohn/red_or_black" "work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/mickjohn/red_or_black"`
[INFO] [stderr] Cloning into 'work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/mickjohn/red_or_black'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mickjohn/red_or_black" "work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/mickjohn/red_or_black"`
[INFO] [stderr] Cloning into 'work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/mickjohn/red_or_black'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] faef532853b7e969b3848e32baa09297393749d9
[INFO] sha for GitHub repo mickjohn/red_or_black: faef532853b7e969b3848e32baa09297393749d9
[INFO] validating manifest of mickjohn/red_or_black on toolchain master#5f9c0448dde167128d668da4555879f64e56af1d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of mickjohn/red_or_black on toolchain try#8ec8125bea94852768b56958f05da47666c21ab0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing mickjohn/red_or_black
[INFO] finished frobbing mickjohn/red_or_black
[INFO] frobbed toml for mickjohn/red_or_black written to work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/mickjohn/red_or_black/Cargo.toml
[INFO] started frobbing mickjohn/red_or_black
[INFO] finished frobbing mickjohn/red_or_black
[INFO] frobbed toml for mickjohn/red_or_black written to work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/mickjohn/red_or_black/Cargo.toml
[INFO] crate mickjohn/red_or_black already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking mickjohn/red_or_black against master#5f9c0448dde167128d668da4555879f64e56af1d for pr-62133
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62133/worker-7/master#5f9c0448dde167128d668da4555879f64e56af1d:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/mickjohn/red_or_black:/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" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] d9ef90774f25af59d2d072e8ec48e2aaaa3c4db9786375c8762ded2fc00fcda9
[INFO] running `"docker" "start" "-a" "d9ef90774f25af59d2d072e8ec48e2aaaa3c4db9786375c8762ded2fc00fcda9"`
[INFO] [stderr]     Checking mio v0.6.16
[INFO] [stderr]     Checking regex v1.0.5
[INFO] [stderr]     Checking mio-extras v2.0.5
[INFO] [stderr]     Checking ws v0.7.8
[INFO] [stderr]     Checking env_logger v0.5.13
[INFO] [stderr]     Checking websocket_red_or_black v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.29s
[INFO] running `"docker" "inspect" "d9ef90774f25af59d2d072e8ec48e2aaaa3c4db9786375c8762ded2fc00fcda9"`
[INFO] running `"docker" "rm" "-f" "d9ef90774f25af59d2d072e8ec48e2aaaa3c4db9786375c8762ded2fc00fcda9"`
[INFO] [stdout] d9ef90774f25af59d2d072e8ec48e2aaaa3c4db9786375c8762ded2fc00fcda9