Dec 17 23:13:01.811 INFO checking howeih/Day-44-Gradient-Approximation against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 23:13:01.811 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-6/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/howeih/Day-44-Gradient-Approximation:/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 23:13:02.147 INFO [stdout] 4e1f76cbae0237d88d9b06b92e3e9dbf9bbb757a1b3c476570f07f0e1716bcfd
Dec 17 23:13:02.149 INFO running `"docker" "start" "-a" "4e1f76cbae0237d88d9b06b92e3e9dbf9bbb757a1b3c476570f07f0e1716bcfd"`
Dec 17 23:13:02.995 INFO [stderr]     Checking ndarray v0.11.2
Dec 17 23:13:10.111 INFO [stderr]     Checking gradient_approximation v0.1.0 (/opt/crater/workdir)
Dec 17 23:13:10.550 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.59s
Dec 17 23:13:10.890 INFO running `"docker" "inspect" "4e1f76cbae0237d88d9b06b92e3e9dbf9bbb757a1b3c476570f07f0e1716bcfd"`
Dec 17 23:13:10.953 INFO running `"docker" "rm" "-f" "4e1f76cbae0237d88d9b06b92e3e9dbf9bbb757a1b3c476570f07f0e1716bcfd"`
Dec 17 23:13:11.024 INFO [stdout] 4e1f76cbae0237d88d9b06b92e3e9dbf9bbb757a1b3c476570f07f0e1716bcfd