[INFO] cloning repository benschulz/rwmutex [INFO] running `"git" "clone" "--bare" "git://github.com/benschulz/rwmutex.git" "work/cache/sources/gh/benschulz/rwmutex"` [INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/benschulz/rwmutex'... [INFO] running `"git" "clone" "work/cache/sources/gh/benschulz/rwmutex" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/benschulz/rwmutex"` [INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/benschulz/rwmutex'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/benschulz/rwmutex" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/benschulz/rwmutex"` [INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/benschulz/rwmutex'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] c00025890fc4ecf743fdb853ff1ee34598dd33b7 [INFO] sha for GitHub repo benschulz/rwmutex: c00025890fc4ecf743fdb853ff1ee34598dd33b7 [INFO] validating manifest of benschulz/rwmutex on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1 [INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of benschulz/rwmutex on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049 [INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing benschulz/rwmutex [INFO] finished frobbing benschulz/rwmutex [INFO] frobbed toml for benschulz/rwmutex written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/benschulz/rwmutex/Cargo.toml [INFO] started frobbing benschulz/rwmutex [INFO] finished frobbing benschulz/rwmutex [INFO] frobbed toml for benschulz/rwmutex written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/benschulz/rwmutex/Cargo.toml [INFO] crate benschulz/rwmutex already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] checking benschulz/rwmutex against master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1 for pr-62008 [INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-4/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/benschulz/rwmutex:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/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" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] 615bc5472fbe8bc1e26ff13a0b8c74e9594c98549a27dc1c967934806298c765 [INFO] running `"docker" "start" "-a" "615bc5472fbe8bc1e26ff13a0b8c74e9594c98549a27dc1c967934806298c765"` [INFO] [stderr] Checking rwmutex v0.1.0 (/opt/crater/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.54s [INFO] running `"docker" "inspect" "615bc5472fbe8bc1e26ff13a0b8c74e9594c98549a27dc1c967934806298c765"` [INFO] running `"docker" "rm" "-f" "615bc5472fbe8bc1e26ff13a0b8c74e9594c98549a27dc1c967934806298c765"` [INFO] [stdout] 615bc5472fbe8bc1e26ff13a0b8c74e9594c98549a27dc1c967934806298c765