Dec 17 23:13:01.524 INFO checking howeih/Day-44-Gradient-Approximation against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 23:13:01.524 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-3/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 23:13:01.738 INFO [stdout] c23d099f3c19b39461ec88b79d85a6ed12347bef904ac128d18e5787dd2b6a52
Dec 17 23:13:01.740 INFO running `"docker" "start" "-a" "c23d099f3c19b39461ec88b79d85a6ed12347bef904ac128d18e5787dd2b6a52"`
Dec 17 23:13:02.435 INFO [stderr]     Checking ndarray v0.11.2
Dec 17 23:13:09.375 INFO [stderr]     Checking gradient_approximation v0.1.0 (/opt/crater/workdir)
Dec 17 23:13:09.809 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.40s
Dec 17 23:13:10.323 INFO running `"docker" "inspect" "c23d099f3c19b39461ec88b79d85a6ed12347bef904ac128d18e5787dd2b6a52"`
Dec 17 23:13:10.528 INFO running `"docker" "rm" "-f" "c23d099f3c19b39461ec88b79d85a6ed12347bef904ac128d18e5787dd2b6a52"`
Dec 17 23:13:10.679 INFO [stdout] c23d099f3c19b39461ec88b79d85a6ed12347bef904ac128d18e5787dd2b6a52