Dec 17 22:29:29.092 INFO checking jcswart/keep-trying against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 22:29:29.092 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-7/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/jcswart/keep-trying:/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 17 22:29:29.464 INFO [stdout] e4fcc71955088185dd772208917c0246e3f77141222220b8902d959648720824
Dec 17 22:29:29.470 INFO running `"docker" "start" "-a" "e4fcc71955088185dd772208917c0246e3f77141222220b8902d959648720824"`
Dec 17 22:29:31.496 INFO [stderr]     Checking clap v2.30.0
Dec 17 22:29:31.496 INFO [stderr]     Checking tokio-core v0.1.12
Dec 17 22:29:31.496 INFO [stderr]     Checking mio-uds v0.6.4
Dec 17 22:29:33.156 INFO [stderr]     Checking tokio-signal v0.1.4
Dec 17 22:29:33.938 INFO [stderr]     Checking tokio-process v0.1.5
Dec 17 22:29:37.557 INFO [stderr]     Checking kt v0.1.0 (/opt/crater/workdir)
Dec 17 22:29:38.072 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.70s
Dec 17 22:29:38.810 INFO running `"docker" "inspect" "e4fcc71955088185dd772208917c0246e3f77141222220b8902d959648720824"`
Dec 17 22:29:38.999 INFO running `"docker" "rm" "-f" "e4fcc71955088185dd772208917c0246e3f77141222220b8902d959648720824"`
Dec 17 22:29:39.212 INFO [stdout] e4fcc71955088185dd772208917c0246e3f77141222220b8902d959648720824