[INFO] updating cached repository kper/ueb_checker
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/kper/ueb_checker
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/kper/ueb_checker" "work/ex/beta-1.37-6/sources/1.36.0/gh/kper/ueb_checker"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/kper/ueb_checker'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/kper/ueb_checker" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/kper/ueb_checker"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/kper/ueb_checker'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9fd6a7a22ec83ff08820676eb2e12f5470e44153
[INFO] sha for GitHub repo kper/ueb_checker: 9fd6a7a22ec83ff08820676eb2e12f5470e44153
[INFO] validating manifest of kper/ueb_checker 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 kper/ueb_checker 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 kper/ueb_checker
[INFO] finished frobbing kper/ueb_checker
[INFO] frobbed toml for kper/ueb_checker written to work/ex/beta-1.37-6/sources/1.36.0/gh/kper/ueb_checker/Cargo.toml
[INFO] started frobbing kper/ueb_checker
[INFO] finished frobbing kper/ueb_checker
[INFO] frobbed toml for kper/ueb_checker written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/kper/ueb_checker/Cargo.toml
[INFO] crate kper/ueb_checker 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 kper/ueb_checker against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/kper/ueb_checker:/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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 724d024be9e3b1b2c8223cf3234a7e2f7ed6181445c07accbd397b6a8df80ff7
[INFO] running `"docker" "start" "-a" "724d024be9e3b1b2c8223cf3234a7e2f7ed6181445c07accbd397b6a8df80ff7"`
[INFO] [stderr]    Compiling winapi v0.3.7
[INFO] [stderr]    Compiling winconsole v0.10.0
[INFO] [stderr]    Compiling colored v1.8.0
[INFO] [stderr]    Compiling result_checker v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:30:17
[INFO] [stderr]    |
[INFO] [stderr] 30 |             let mut stdin = child.stdin.as_mut().expect("Failed to open stdin");
[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 4.22s
[INFO] running `"docker" "inspect" "724d024be9e3b1b2c8223cf3234a7e2f7ed6181445c07accbd397b6a8df80ff7"`
[INFO] running `"docker" "rm" "-f" "724d024be9e3b1b2c8223cf3234a7e2f7ed6181445c07accbd397b6a8df80ff7"`
[INFO] [stdout] 724d024be9e3b1b2c8223cf3234a7e2f7ed6181445c07accbd397b6a8df80ff7
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/kper/ueb_checker:/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" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 76f2f22e092308189b5378e753194fe3c859041878856ba11e69dd89d12002f6
[INFO] running `"docker" "start" "-a" "76f2f22e092308189b5378e753194fe3c859041878856ba11e69dd89d12002f6"`
[INFO] [stderr]    Compiling result_checker v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:30:17
[INFO] [stderr]    |
[INFO] [stderr] 30 |             let mut stdin = child.stdin.as_mut().expect("Failed to open stdin");
[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 0.66s
[INFO] running `"docker" "inspect" "76f2f22e092308189b5378e753194fe3c859041878856ba11e69dd89d12002f6"`
[INFO] running `"docker" "rm" "-f" "76f2f22e092308189b5378e753194fe3c859041878856ba11e69dd89d12002f6"`
[INFO] [stdout] 76f2f22e092308189b5378e753194fe3c859041878856ba11e69dd89d12002f6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/kper/ueb_checker:/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" "+beta-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 010ec7925f13ab4024c36b624f664a774510d7b3d01a67c86bd337917ca635b7
[INFO] running `"docker" "start" "-a" "010ec7925f13ab4024c36b624f664a774510d7b3d01a67c86bd337917ca635b7"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/result_checker-77152d9329e16dab
[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" "010ec7925f13ab4024c36b624f664a774510d7b3d01a67c86bd337917ca635b7"`
[INFO] running `"docker" "rm" "-f" "010ec7925f13ab4024c36b624f664a774510d7b3d01a67c86bd337917ca635b7"`
[INFO] [stdout] 010ec7925f13ab4024c36b624f664a774510d7b3d01a67c86bd337917ca635b7