[INFO] updating cached repository alevy/iterator_bench
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/alevy/iterator_bench
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/alevy/iterator_bench" "work/ex/pr-57617/sources/master#e2f221c75932de7a29845c8d6f1f73536ad00c41/gh/alevy/iterator_bench"`
[INFO] [stderr] Cloning into 'work/ex/pr-57617/sources/master#e2f221c75932de7a29845c8d6f1f73536ad00c41/gh/alevy/iterator_bench'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/alevy/iterator_bench" "work/ex/pr-57617/sources/try#0bfb90d213a93e466b33d078a5b535a2a6f9c5ff/gh/alevy/iterator_bench"`
[INFO] [stderr] Cloning into 'work/ex/pr-57617/sources/try#0bfb90d213a93e466b33d078a5b535a2a6f9c5ff/gh/alevy/iterator_bench'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 026d67b174f1304e34626850dcc9c3aecc155f2b
[INFO] sha for GitHub repo alevy/iterator_bench: 026d67b174f1304e34626850dcc9c3aecc155f2b
[INFO] validating manifest of alevy/iterator_bench on toolchain master#e2f221c75932de7a29845c8d6f1f73536ad00c41
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e2f221c75932de7a29845c8d6f1f73536ad00c41-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of alevy/iterator_bench on toolchain try#0bfb90d213a93e466b33d078a5b535a2a6f9c5ff
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0bfb90d213a93e466b33d078a5b535a2a6f9c5ff-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing alevy/iterator_bench
[INFO] finished frobbing alevy/iterator_bench
[INFO] frobbed toml for alevy/iterator_bench written to work/ex/pr-57617/sources/master#e2f221c75932de7a29845c8d6f1f73536ad00c41/gh/alevy/iterator_bench/Cargo.toml
[INFO] started frobbing alevy/iterator_bench
[INFO] finished frobbing alevy/iterator_bench
[INFO] frobbed toml for alevy/iterator_bench written to work/ex/pr-57617/sources/try#0bfb90d213a93e466b33d078a5b535a2a6f9c5ff/gh/alevy/iterator_bench/Cargo.toml
[INFO] crate alevy/iterator_bench has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e2f221c75932de7a29845c8d6f1f73536ad00c41-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0bfb90d213a93e466b33d078a5b535a2a6f9c5ff-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking alevy/iterator_bench against master#e2f221c75932de7a29845c8d6f1f73536ad00c41 for pr-57617
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57617/worker-3/master#e2f221c75932de7a29845c8d6f1f73536ad00c41:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57617/sources/master#e2f221c75932de7a29845c8d6f1f73536ad00c41/gh/alevy/iterator_bench:/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" "+e2f221c75932de7a29845c8d6f1f73536ad00c41-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] b28d65210fe831aaf85527de3a7a7a1d01c40273e59f02fad8c15daa04057fe7
[INFO] running `"docker" "start" "-a" "b28d65210fe831aaf85527de3a7a7a1d01c40273e59f02fad8c15daa04057fe7"`
[INFO] [stderr]     Blocking waiting for file lock on the registry index
[INFO] [stderr]     Checking iterator_bench v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.38s
[INFO] running `"docker" "inspect" "b28d65210fe831aaf85527de3a7a7a1d01c40273e59f02fad8c15daa04057fe7"`
[INFO] running `"docker" "rm" "-f" "b28d65210fe831aaf85527de3a7a7a1d01c40273e59f02fad8c15daa04057fe7"`
[INFO] [stdout] b28d65210fe831aaf85527de3a7a7a1d01c40273e59f02fad8c15daa04057fe7