Dec 19 05:36:47.055 INFO checking wgreenberg/rs-markov against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 05:36:47.055 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-4/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/wgreenberg/rs-markov:/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 05:36:47.614 INFO [stdout] 90cdd4cd32f3e86eb2b6707d79f4b250070b904c2d9ed73c6e6841f67a899d2e
Dec 19 05:36:47.616 INFO running `"docker" "start" "-a" "90cdd4cd32f3e86eb2b6707d79f4b250070b904c2d9ed73c6e6841f67a899d2e"`
Dec 19 05:36:49.781 INFO [stderr]     Checking libc v0.2.33
Dec 19 05:36:50.824 INFO [stderr]     Checking rand v0.3.18
Dec 19 05:36:52.068 INFO [stderr]     Checking rs-markov v0.1.0 (/opt/crater/workdir)
Dec 19 05:36:52.344 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.59s
Dec 19 05:36:53.276 INFO running `"docker" "inspect" "90cdd4cd32f3e86eb2b6707d79f4b250070b904c2d9ed73c6e6841f67a899d2e"`
Dec 19 05:36:53.714 INFO running `"docker" "rm" "-f" "90cdd4cd32f3e86eb2b6707d79f4b250070b904c2d9ed73c6e6841f67a899d2e"`
Dec 19 05:36:54.017 INFO [stdout] 90cdd4cd32f3e86eb2b6707d79f4b250070b904c2d9ed73c6e6841f67a899d2e