[INFO] updating cached repository howeih/Day-44-Gradient-Approximation
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/howeih/Day-44-Gradient-Approximation
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/howeih/Day-44-Gradient-Approximation" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/howeih/Day-44-Gradient-Approximation"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/howeih/Day-44-Gradient-Approximation'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/howeih/Day-44-Gradient-Approximation" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/howeih/Day-44-Gradient-Approximation"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/howeih/Day-44-Gradient-Approximation'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2084d871af03aa6c7222140a786a5024c732aeea
[INFO] sha for GitHub repo howeih/Day-44-Gradient-Approximation: 2084d871af03aa6c7222140a786a5024c732aeea
[INFO] validating manifest of howeih/Day-44-Gradient-Approximation on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of howeih/Day-44-Gradient-Approximation on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing howeih/Day-44-Gradient-Approximation
[INFO] finished frobbing howeih/Day-44-Gradient-Approximation
[INFO] frobbed toml for howeih/Day-44-Gradient-Approximation written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/howeih/Day-44-Gradient-Approximation/Cargo.toml
[INFO] started frobbing howeih/Day-44-Gradient-Approximation
[INFO] finished frobbing howeih/Day-44-Gradient-Approximation
[INFO] frobbed toml for howeih/Day-44-Gradient-Approximation written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/howeih/Day-44-Gradient-Approximation/Cargo.toml
[INFO] crate howeih/Day-44-Gradient-Approximation already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking howeih/Day-44-Gradient-Approximation against master#60960a260f7b5c695fd0717311d72ce62dd4eb43 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-2/master#60960a260f7b5c695fd0717311d72ce62dd4eb43:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/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" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 40f685233c35bac90ab16bd54b61e16d0be1f412e5b2209a9ae840307a6a008e
[INFO] running `"docker" "start" "-a" "40f685233c35bac90ab16bd54b61e16d0be1f412e5b2209a9ae840307a6a008e"`
[INFO] [stderr]     Checking ndarray v0.11.2
[INFO] [stderr]     Checking gradient_approximation v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.31s
[INFO] running `"docker" "inspect" "40f685233c35bac90ab16bd54b61e16d0be1f412e5b2209a9ae840307a6a008e"`
[INFO] running `"docker" "rm" "-f" "40f685233c35bac90ab16bd54b61e16d0be1f412e5b2209a9ae840307a6a008e"`
[INFO] [stdout] 40f685233c35bac90ab16bd54b61e16d0be1f412e5b2209a9ae840307a6a008e