[INFO] cloning repository kcexn/rust_string_reversal
[INFO] running `"git" "clone" "--bare" "git://github.com/kcexn/rust_string_reversal.git" "work/cache/sources/gh/kcexn/rust_string_reversal"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/kcexn/rust_string_reversal'...
[INFO] running `"git" "clone" "work/cache/sources/gh/kcexn/rust_string_reversal" "work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/kcexn/rust_string_reversal"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/kcexn/rust_string_reversal'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/kcexn/rust_string_reversal" "work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/kcexn/rust_string_reversal"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/kcexn/rust_string_reversal'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5540d3d54d024ec59ed418a1bf62b12cb8741c70
[INFO] sha for GitHub repo kcexn/rust_string_reversal: 5540d3d54d024ec59ed418a1bf62b12cb8741c70
[INFO] validating manifest of kcexn/rust_string_reversal on toolchain master#c0086b9e8972fef9fd4af24bae20d45021ed06c6
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of kcexn/rust_string_reversal on toolchain try#290ac7b29f41ff9fa5232f9a1116ea71a3501063
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing kcexn/rust_string_reversal
[INFO] finished frobbing kcexn/rust_string_reversal
[INFO] frobbed toml for kcexn/rust_string_reversal written to work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/kcexn/rust_string_reversal/Cargo.toml
[INFO] started frobbing kcexn/rust_string_reversal
[INFO] finished frobbing kcexn/rust_string_reversal
[INFO] frobbed toml for kcexn/rust_string_reversal written to work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/kcexn/rust_string_reversal/Cargo.toml
[INFO] crate kcexn/rust_string_reversal has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking kcexn/rust_string_reversal against master#c0086b9e8972fef9fd4af24bae20d45021ed06c6 for pr-58899
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58899/worker-4/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/kcexn/rust_string_reversal:/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" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] eb26aacedff8d31bb44cc5380bda247f5a03946e0fa650546e6a0d8583f6bfef
[INFO] running `"docker" "start" "-a" "eb26aacedff8d31bb44cc5380bda247f5a03946e0fa650546e6a0d8583f6bfef"`
[INFO] [stderr]     Checking string_reversal v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.29s
[INFO] running `"docker" "inspect" "eb26aacedff8d31bb44cc5380bda247f5a03946e0fa650546e6a0d8583f6bfef"`
[INFO] running `"docker" "rm" "-f" "eb26aacedff8d31bb44cc5380bda247f5a03946e0fa650546e6a0d8583f6bfef"`
[INFO] [stdout] eb26aacedff8d31bb44cc5380bda247f5a03946e0fa650546e6a0d8583f6bfef