[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-1.38-1/sources/1.37.0/gh/kper/ueb_checker"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/kper/ueb_checker'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/kper/ueb_checker" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kper/ueb_checker"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/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 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of kper/ueb_checker 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 kper/ueb_checker
[INFO] finished frobbing kper/ueb_checker
[INFO] frobbed toml for kper/ueb_checker written to work/ex/beta-1.38-1/sources/1.37.0/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-1.38-1/sources/beta-2019-08-13/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" "+1.37.0" "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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing kper/ueb_checker against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/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-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 6f99e5d6a65d34fcbd76db6a4ca85e45024d654f1c3a409f9847eda230b2398d
[INFO] running `"docker" "start" "-a" "6f99e5d6a65d34fcbd76db6a4ca85e45024d654f1c3a409f9847eda230b2398d"`
[INFO] [stderr]    Compiling winapi v0.3.7
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling cgmath v0.16.1
[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 12.12s
[INFO] running `"docker" "inspect" "6f99e5d6a65d34fcbd76db6a4ca85e45024d654f1c3a409f9847eda230b2398d"`
[INFO] running `"docker" "rm" "-f" "6f99e5d6a65d34fcbd76db6a4ca85e45024d654f1c3a409f9847eda230b2398d"`
[INFO] [stdout] 6f99e5d6a65d34fcbd76db6a4ca85e45024d654f1c3a409f9847eda230b2398d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/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-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 9a6fd56bbade5a684d4af1a92f77efeb05c36dc94af5f31bb8d26216fd84ef9c
[INFO] running `"docker" "start" "-a" "9a6fd56bbade5a684d4af1a92f77efeb05c36dc94af5f31bb8d26216fd84ef9c"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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 0.49s
[INFO] running `"docker" "inspect" "9a6fd56bbade5a684d4af1a92f77efeb05c36dc94af5f31bb8d26216fd84ef9c"`
[INFO] running `"docker" "rm" "-f" "9a6fd56bbade5a684d4af1a92f77efeb05c36dc94af5f31bb8d26216fd84ef9c"`
[INFO] [stdout] 9a6fd56bbade5a684d4af1a92f77efeb05c36dc94af5f31bb8d26216fd84ef9c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/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-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 793550f0eb3003cc6a2ff944f95a62424698663e9c87668f24b910c23f2b7c07
[INFO] running `"docker" "start" "-a" "793550f0eb3003cc6a2ff944f95a62424698663e9c87668f24b910c23f2b7c07"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/result_checker-933be5ab56eb2e57
[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" "793550f0eb3003cc6a2ff944f95a62424698663e9c87668f24b910c23f2b7c07"`
[INFO] running `"docker" "rm" "-f" "793550f0eb3003cc6a2ff944f95a62424698663e9c87668f24b910c23f2b7c07"`
[INFO] [stdout] 793550f0eb3003cc6a2ff944f95a62424698663e9c87668f24b910c23f2b7c07