Dec 17 15:24:17.645 INFO checking silverjam/rslow against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 15:24:17.646 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-3/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/silverjam/rslow:/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 15:24:18.227 INFO [stdout] aa7daa997b7acb622a9406b309b9a789d977675cea0d90d6a249d1262c41b78a
Dec 17 15:24:18.229 INFO running `"docker" "start" "-a" "aa7daa997b7acb622a9406b309b9a789d977675cea0d90d6a249d1262c41b78a"`
Dec 17 15:24:20.587 INFO [stderr]     Checking term_size v0.3.0
Dec 17 15:24:20.600 INFO [stderr]     Checking env_logger v0.4.3
Dec 17 15:24:20.942 INFO [stderr]     Checking textwrap v0.8.0
Dec 17 15:24:21.473 INFO [stderr]     Checking clap v2.26.2
Dec 17 15:24:28.434 INFO [stderr]     Checking rslow v0.1.0 (/opt/crater/workdir)
Dec 17 15:24:29.246 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.75s
Dec 17 15:24:30.212 INFO running `"docker" "inspect" "aa7daa997b7acb622a9406b309b9a789d977675cea0d90d6a249d1262c41b78a"`
Dec 17 15:24:30.598 INFO running `"docker" "rm" "-f" "aa7daa997b7acb622a9406b309b9a789d977675cea0d90d6a249d1262c41b78a"`
Dec 17 15:24:30.947 INFO [stdout] aa7daa997b7acb622a9406b309b9a789d977675cea0d90d6a249d1262c41b78a