[INFO] updating cached repository joshcrim/gitrs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/joshcrim/gitrs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/joshcrim/gitrs" "work/ex/beta-1.37-6/sources/1.36.0/gh/joshcrim/gitrs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/joshcrim/gitrs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/joshcrim/gitrs" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/joshcrim/gitrs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/joshcrim/gitrs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5be257bcad41c6d9f8a9d17a4120e3f1ac88b9c7
[INFO] sha for GitHub repo joshcrim/gitrs: 5be257bcad41c6d9f8a9d17a4120e3f1ac88b9c7
[INFO] validating manifest of joshcrim/gitrs 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 joshcrim/gitrs 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 joshcrim/gitrs
[INFO] finished frobbing joshcrim/gitrs
[INFO] frobbed toml for joshcrim/gitrs written to work/ex/beta-1.37-6/sources/1.36.0/gh/joshcrim/gitrs/Cargo.toml
[INFO] started frobbing joshcrim/gitrs
[INFO] finished frobbing joshcrim/gitrs
[INFO] frobbed toml for joshcrim/gitrs written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/joshcrim/gitrs/Cargo.toml
[INFO] crate joshcrim/gitrs already has a lockfile, it will not be regenerated
[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 joshcrim/gitrs 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-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/joshcrim/gitrs:/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] 580065ca19450611590895ded1ead6db3500bc5bba51b7235a324f998ed1fd41
[INFO] running `"docker" "start" "-a" "580065ca19450611590895ded1ead6db3500bc5bba51b7235a324f998ed1fd41"`
[INFO] [stderr]    Compiling clicolors-control v0.2.0
[INFO] [stderr]    Compiling parking_lot_core v0.2.13
[INFO] [stderr]    Compiling parking_lot v0.5.4
[INFO] [stderr]    Compiling console v0.6.1
[INFO] [stderr]    Compiling gitrs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:19:13
[INFO] [stderr]    |
[INFO] [stderr] 19 |         let mut current_branch = Command::new("git")
[INFO] [stderr]    |             ----^^^^^^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.69s
[INFO] running `"docker" "inspect" "580065ca19450611590895ded1ead6db3500bc5bba51b7235a324f998ed1fd41"`
[INFO] running `"docker" "rm" "-f" "580065ca19450611590895ded1ead6db3500bc5bba51b7235a324f998ed1fd41"`
[INFO] [stdout] 580065ca19450611590895ded1ead6db3500bc5bba51b7235a324f998ed1fd41
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/joshcrim/gitrs:/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] 3fa63fbc4d1f7b96b6b3fc81b9d44a2d291e6e78818c04db0c4ee79393b5a2f8
[INFO] running `"docker" "start" "-a" "3fa63fbc4d1f7b96b6b3fc81b9d44a2d291e6e78818c04db0c4ee79393b5a2f8"`
[INFO] [stderr]    Compiling gitrs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:19:13
[INFO] [stderr]    |
[INFO] [stderr] 19 |         let mut current_branch = Command::new("git")
[INFO] [stderr]    |             ----^^^^^^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.19s
[INFO] running `"docker" "inspect" "3fa63fbc4d1f7b96b6b3fc81b9d44a2d291e6e78818c04db0c4ee79393b5a2f8"`
[INFO] running `"docker" "rm" "-f" "3fa63fbc4d1f7b96b6b3fc81b9d44a2d291e6e78818c04db0c4ee79393b5a2f8"`
[INFO] [stdout] 3fa63fbc4d1f7b96b6b3fc81b9d44a2d291e6e78818c04db0c4ee79393b5a2f8
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/joshcrim/gitrs:/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] c05ccd8494dc768f8f194892b883905816efefbed426cbeb19b1228ca5acc1ef
[INFO] running `"docker" "start" "-a" "c05ccd8494dc768f8f194892b883905816efefbed426cbeb19b1228ca5acc1ef"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/gitrs-f326685a812cf2d3
[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" "c05ccd8494dc768f8f194892b883905816efefbed426cbeb19b1228ca5acc1ef"`
[INFO] running `"docker" "rm" "-f" "c05ccd8494dc768f8f194892b883905816efefbed426cbeb19b1228ca5acc1ef"`
[INFO] [stdout] c05ccd8494dc768f8f194892b883905816efefbed426cbeb19b1228ca5acc1ef