[INFO] crate group-by 1.0.0 is already in cache
[INFO] extracting crate group-by 1.0.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/group-by/1.0.0
[INFO] extracting crate group-by 1.0.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/group-by/1.0.0
[INFO] validating manifest of group-by-1.0.0 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of group-by-1.0.0 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing group-by-1.0.0
[INFO] finished frobbing group-by-1.0.0
[INFO] frobbed toml for group-by-1.0.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/group-by/1.0.0/Cargo.toml
[INFO] started frobbing group-by-1.0.0
[INFO] finished frobbing group-by-1.0.0
[INFO] frobbed toml for group-by-1.0.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/group-by/1.0.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing group-by-1.0.0 against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/group-by/1.0.0:/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=warn" "-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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 4a60468ab8df02281bc01c898a0bef01dfba3ee1402b8e20290d0f7d4fa210ab
[INFO] running `"docker" "start" "-a" "4a60468ab8df02281bc01c898a0bef01dfba3ee1402b8e20290d0f7d4fa210ab"`
[INFO] [stderr]    Compiling group-by v1.0.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.23s
[INFO] running `"docker" "inspect" "4a60468ab8df02281bc01c898a0bef01dfba3ee1402b8e20290d0f7d4fa210ab"`
[INFO] running `"docker" "rm" "-f" "4a60468ab8df02281bc01c898a0bef01dfba3ee1402b8e20290d0f7d4fa210ab"`
[INFO] [stdout] 4a60468ab8df02281bc01c898a0bef01dfba3ee1402b8e20290d0f7d4fa210ab
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/group-by/1.0.0:/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=warn" "-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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] b8fb3806c54c6439a4f2899babd906865945e339456075c3a3949e895c865768
[INFO] running `"docker" "start" "-a" "b8fb3806c54c6439a4f2899babd906865945e339456075c3a3949e895c865768"`
[INFO] [stderr]    Compiling group-by v1.0.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.75s
[INFO] running `"docker" "inspect" "b8fb3806c54c6439a4f2899babd906865945e339456075c3a3949e895c865768"`
[INFO] running `"docker" "rm" "-f" "b8fb3806c54c6439a4f2899babd906865945e339456075c3a3949e895c865768"`
[INFO] [stdout] b8fb3806c54c6439a4f2899babd906865945e339456075c3a3949e895c865768
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/group-by/1.0.0:/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=warn" "-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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 292afc09f567d81ef0794954c4a0b5026c153ec4c0f9841ed726f434490a3048
[INFO] running `"docker" "start" "-a" "292afc09f567d81ef0794954c4a0b5026c153ec4c0f9841ed726f434490a3048"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/group_by-4248ed8e857332ba
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests group-by
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "292afc09f567d81ef0794954c4a0b5026c153ec4c0f9841ed726f434490a3048"`
[INFO] running `"docker" "rm" "-f" "292afc09f567d81ef0794954c4a0b5026c153ec4c0f9841ed726f434490a3048"`
[INFO] [stdout] 292afc09f567d81ef0794954c4a0b5026c153ec4c0f9841ed726f434490a3048