[INFO] crate group-by 1.0.0 is already in cache
[INFO] extracting crate group-by 1.0.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/group-by/1.0.0
[INFO] extracting crate group-by 1.0.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/group-by/1.0.0
[INFO] validating manifest of group-by-1.0.0 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of group-by-1.0.0 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "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-1.37-6/sources/1.36.0/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-1.37-6/sources/beta-2019-07-23/reg/group-by/1.0.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing group-by-1.0.0 against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 437edf85870b5926a267188a257b14b9c9d73de2a5ef4de67068afe93d1a327d
[INFO] running `"docker" "start" "-a" "437edf85870b5926a267188a257b14b9c9d73de2a5ef4de67068afe93d1a327d"`
[INFO] [stderr]    Compiling group-by v1.0.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.19s
[INFO] running `"docker" "inspect" "437edf85870b5926a267188a257b14b9c9d73de2a5ef4de67068afe93d1a327d"`
[INFO] running `"docker" "rm" "-f" "437edf85870b5926a267188a257b14b9c9d73de2a5ef4de67068afe93d1a327d"`
[INFO] [stdout] 437edf85870b5926a267188a257b14b9c9d73de2a5ef4de67068afe93d1a327d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 2cbed0ef99f869b5590a1c1bbcefb84b26a5a4fcf31f854feb38522947fb703e
[INFO] running `"docker" "start" "-a" "2cbed0ef99f869b5590a1c1bbcefb84b26a5a4fcf31f854feb38522947fb703e"`
[INFO] [stderr]    Compiling group-by v1.0.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.72s
[INFO] running `"docker" "inspect" "2cbed0ef99f869b5590a1c1bbcefb84b26a5a4fcf31f854feb38522947fb703e"`
[INFO] running `"docker" "rm" "-f" "2cbed0ef99f869b5590a1c1bbcefb84b26a5a4fcf31f854feb38522947fb703e"`
[INFO] [stdout] 2cbed0ef99f869b5590a1c1bbcefb84b26a5a4fcf31f854feb38522947fb703e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 55f21f5b8f97f03b303871ffe879f2851148268c84f813a81477b8059089a382
[INFO] running `"docker" "start" "-a" "55f21f5b8f97f03b303871ffe879f2851148268c84f813a81477b8059089a382"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/group_by-0cebe3df3da13594
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test it_works ... ok
[INFO] [stderr]    Doc-tests group-by
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[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" "55f21f5b8f97f03b303871ffe879f2851148268c84f813a81477b8059089a382"`
[INFO] running `"docker" "rm" "-f" "55f21f5b8f97f03b303871ffe879f2851148268c84f813a81477b8059089a382"`
[INFO] [stdout] 55f21f5b8f97f03b303871ffe879f2851148268c84f813a81477b8059089a382