[INFO] updating cached repository lostutils/groupby
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/lostutils/groupby
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/lostutils/groupby" "work/ex/beta-1.38-1/sources/1.37.0/gh/lostutils/groupby"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/lostutils/groupby'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/lostutils/groupby" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/lostutils/groupby"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/lostutils/groupby'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] bd8803081529cd08d3f94898f82052688b4a9248
[INFO] sha for GitHub repo lostutils/groupby: bd8803081529cd08d3f94898f82052688b4a9248
[INFO] validating manifest of lostutils/groupby 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 lostutils/groupby 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 lostutils/groupby
[INFO] finished frobbing lostutils/groupby
[INFO] frobbed toml for lostutils/groupby written to work/ex/beta-1.38-1/sources/1.37.0/gh/lostutils/groupby/Cargo.toml
[INFO] started frobbing lostutils/groupby
[INFO] finished frobbing lostutils/groupby
[INFO] frobbed toml for lostutils/groupby written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/lostutils/groupby/Cargo.toml
[INFO] crate lostutils/groupby already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/lostutils/groupby/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[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 lostutils/groupby 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/gh/lostutils/groupby:/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] a4c0c2846202f68aead2ba401a9d161496deff69c8db72f196920d255630a4c0
[INFO] running `"docker" "start" "-a" "a4c0c2846202f68aead2ba401a9d161496deff69c8db72f196920d255630a4c0"`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling groupby v0.1.5 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.54s
[INFO] running `"docker" "inspect" "a4c0c2846202f68aead2ba401a9d161496deff69c8db72f196920d255630a4c0"`
[INFO] running `"docker" "rm" "-f" "a4c0c2846202f68aead2ba401a9d161496deff69c8db72f196920d255630a4c0"`
[INFO] [stdout] a4c0c2846202f68aead2ba401a9d161496deff69c8db72f196920d255630a4c0
[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/gh/lostutils/groupby:/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] fba7ece8fb54ed457a3f3e33de58e2fc941644ad08113b022feb3d9a19a8840d
[INFO] running `"docker" "start" "-a" "fba7ece8fb54ed457a3f3e33de58e2fc941644ad08113b022feb3d9a19a8840d"`
[INFO] [stderr]    Compiling groupby v0.1.5 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `"docker" "inspect" "fba7ece8fb54ed457a3f3e33de58e2fc941644ad08113b022feb3d9a19a8840d"`
[INFO] running `"docker" "rm" "-f" "fba7ece8fb54ed457a3f3e33de58e2fc941644ad08113b022feb3d9a19a8840d"`
[INFO] [stdout] fba7ece8fb54ed457a3f3e33de58e2fc941644ad08113b022feb3d9a19a8840d
[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/gh/lostutils/groupby:/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] ab187eb2b947b4a2b272516a1398f46eafa6970a76b09d2dbb2809ee08a02a1c
[INFO] running `"docker" "start" "-a" "ab187eb2b947b4a2b272516a1398f46eafa6970a76b09d2dbb2809ee08a02a1c"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/groupby-d6e1aabfd95be686
[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" "ab187eb2b947b4a2b272516a1398f46eafa6970a76b09d2dbb2809ee08a02a1c"`
[INFO] running `"docker" "rm" "-f" "ab187eb2b947b4a2b272516a1398f46eafa6970a76b09d2dbb2809ee08a02a1c"`
[INFO] [stdout] ab187eb2b947b4a2b272516a1398f46eafa6970a76b09d2dbb2809ee08a02a1c