[INFO] updating cached repository Keiji2827/change_profile
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Keiji2827/change_profile
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Keiji2827/change_profile" "work/ex/beta-1.38-1/sources/1.37.0/gh/Keiji2827/change_profile"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Keiji2827/change_profile'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Keiji2827/change_profile" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Keiji2827/change_profile"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Keiji2827/change_profile'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 236fa6e888b67b133a576a011ae8367c86b7f2e4
[INFO] sha for GitHub repo Keiji2827/change_profile: 236fa6e888b67b133a576a011ae8367c86b7f2e4
[INFO] validating manifest of Keiji2827/change_profile 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 Keiji2827/change_profile 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 Keiji2827/change_profile
[INFO] finished frobbing Keiji2827/change_profile
[INFO] frobbed toml for Keiji2827/change_profile written to work/ex/beta-1.38-1/sources/1.37.0/gh/Keiji2827/change_profile/Cargo.toml
[INFO] started frobbing Keiji2827/change_profile
[INFO] finished frobbing Keiji2827/change_profile
[INFO] frobbed toml for Keiji2827/change_profile written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Keiji2827/change_profile/Cargo.toml
[INFO] crate Keiji2827/change_profile 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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing Keiji2827/change_profile 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/Keiji2827/change_profile:/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] f33b21ee2d68f4565c7c8bffe4ec070a17720557c33a8ea37c5b460cfa80a8b2
[INFO] running `"docker" "start" "-a" "f33b21ee2d68f4565c7c8bffe4ec070a17720557c33a8ea37c5b460cfa80a8b2"`
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling thread-id v2.0.0
[INFO] [stderr]    Compiling thread_local v0.2.7
[INFO] [stderr]    Compiling aho-corasick v0.5.3
[INFO] [stderr]    Compiling regex v0.1.80
[INFO] [stderr]    Compiling change_profile v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:58:13
[INFO] [stderr]    |
[INFO] [stderr] 58 |         let mut reader = BufReader::new(file);
[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 11.66s
[INFO] running `"docker" "inspect" "f33b21ee2d68f4565c7c8bffe4ec070a17720557c33a8ea37c5b460cfa80a8b2"`
[INFO] running `"docker" "rm" "-f" "f33b21ee2d68f4565c7c8bffe4ec070a17720557c33a8ea37c5b460cfa80a8b2"`
[INFO] [stdout] f33b21ee2d68f4565c7c8bffe4ec070a17720557c33a8ea37c5b460cfa80a8b2
[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/Keiji2827/change_profile:/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] b24555d3ea584e7b90b6e561e4b95d7232c37000962271519fd97a9f168ba542
[INFO] running `"docker" "start" "-a" "b24555d3ea584e7b90b6e561e4b95d7232c37000962271519fd97a9f168ba542"`
[INFO] [stderr]    Compiling change_profile v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:58:13
[INFO] [stderr]    |
[INFO] [stderr] 58 |         let mut reader = BufReader::new(file);
[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 0.83s
[INFO] running `"docker" "inspect" "b24555d3ea584e7b90b6e561e4b95d7232c37000962271519fd97a9f168ba542"`
[INFO] running `"docker" "rm" "-f" "b24555d3ea584e7b90b6e561e4b95d7232c37000962271519fd97a9f168ba542"`
[INFO] [stdout] b24555d3ea584e7b90b6e561e4b95d7232c37000962271519fd97a9f168ba542
[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/Keiji2827/change_profile:/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] 2726448b177615d6c346c02b5420bb5fe9c86b5d4071dd32b62b0fbccece6301
[INFO] running `"docker" "start" "-a" "2726448b177615d6c346c02b5420bb5fe9c86b5d4071dd32b62b0fbccece6301"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/change_profile-65af9b860d003d49
[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" "2726448b177615d6c346c02b5420bb5fe9c86b5d4071dd32b62b0fbccece6301"`
[INFO] running `"docker" "rm" "-f" "2726448b177615d6c346c02b5420bb5fe9c86b5d4071dd32b62b0fbccece6301"`
[INFO] [stdout] 2726448b177615d6c346c02b5420bb5fe9c86b5d4071dd32b62b0fbccece6301