[INFO] updating cached repository jmacdonald/bright
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jmacdonald/bright
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jmacdonald/bright" "work/ex/beta-1.37-6/sources/1.36.0/gh/jmacdonald/bright"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/jmacdonald/bright'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jmacdonald/bright" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/jmacdonald/bright"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/jmacdonald/bright'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8c53464495b90945b3df8dfec4a7fc7dbd3a8f1a
[INFO] sha for GitHub repo jmacdonald/bright: 8c53464495b90945b3df8dfec4a7fc7dbd3a8f1a
[INFO] validating manifest of jmacdonald/bright 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 jmacdonald/bright 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 jmacdonald/bright
[INFO] finished frobbing jmacdonald/bright
[INFO] frobbed toml for jmacdonald/bright written to work/ex/beta-1.37-6/sources/1.36.0/gh/jmacdonald/bright/Cargo.toml
[INFO] started frobbing jmacdonald/bright
[INFO] finished frobbing jmacdonald/bright
[INFO] frobbed toml for jmacdonald/bright written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/jmacdonald/bright/Cargo.toml
[INFO] crate jmacdonald/bright 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 jmacdonald/bright 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-5/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/jmacdonald/bright:/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] 057ca9a007bd395319d86751d68e9e5f5e93b5611883435509be35eb3b649cc7
[INFO] running `"docker" "start" "-a" "057ca9a007bd395319d86751d68e9e5f5e93b5611883435509be35eb3b649cc7"`
[INFO] [stderr]    Compiling bright v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 | /     File::open(Path::new("/sys/class/backlight/intel_backlight/actual_brightness"))
[INFO] [stderr] 18 | |         .expect("Couldn't read current brightness.")
[INFO] [stderr] 19 | |         .read_to_string(&mut current_brightness);
[INFO] [stderr]    | |_________________________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 | /     File::open(Path::new("/sys/class/backlight/intel_backlight/max_brightness"))
[INFO] [stderr] 29 | |         .expect("Couldn't read max brightness.")
[INFO] [stderr] 30 | |         .read_to_string(&mut max_brightness);
[INFO] [stderr]    | |_____________________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.08s
[INFO] running `"docker" "inspect" "057ca9a007bd395319d86751d68e9e5f5e93b5611883435509be35eb3b649cc7"`
[INFO] running `"docker" "rm" "-f" "057ca9a007bd395319d86751d68e9e5f5e93b5611883435509be35eb3b649cc7"`
[INFO] [stdout] 057ca9a007bd395319d86751d68e9e5f5e93b5611883435509be35eb3b649cc7
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/jmacdonald/bright:/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] 666203766dac96e86261bd9ae0935422389db26d47ed20c1b99e2f039f42bcc4
[INFO] running `"docker" "start" "-a" "666203766dac96e86261bd9ae0935422389db26d47ed20c1b99e2f039f42bcc4"`
[INFO] [stderr]    Compiling bright v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 | /     File::open(Path::new("/sys/class/backlight/intel_backlight/actual_brightness"))
[INFO] [stderr] 18 | |         .expect("Couldn't read current brightness.")
[INFO] [stderr] 19 | |         .read_to_string(&mut current_brightness);
[INFO] [stderr]    | |_________________________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 | /     File::open(Path::new("/sys/class/backlight/intel_backlight/max_brightness"))
[INFO] [stderr] 29 | |         .expect("Couldn't read max brightness.")
[INFO] [stderr] 30 | |         .read_to_string(&mut max_brightness);
[INFO] [stderr]    | |_____________________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.78s
[INFO] running `"docker" "inspect" "666203766dac96e86261bd9ae0935422389db26d47ed20c1b99e2f039f42bcc4"`
[INFO] running `"docker" "rm" "-f" "666203766dac96e86261bd9ae0935422389db26d47ed20c1b99e2f039f42bcc4"`
[INFO] [stdout] 666203766dac96e86261bd9ae0935422389db26d47ed20c1b99e2f039f42bcc4
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/jmacdonald/bright:/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] d06e6b5887d7fdd170bc3555147d4645430d952fcaed363fc7fa03ad91dbe749
[INFO] running `"docker" "start" "-a" "d06e6b5887d7fdd170bc3555147d4645430d952fcaed363fc7fa03ad91dbe749"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/bright-60a11e42cc5040c6
[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" "d06e6b5887d7fdd170bc3555147d4645430d952fcaed363fc7fa03ad91dbe749"`
[INFO] running `"docker" "rm" "-f" "d06e6b5887d7fdd170bc3555147d4645430d952fcaed363fc7fa03ad91dbe749"`
[INFO] [stdout] d06e6b5887d7fdd170bc3555147d4645430d952fcaed363fc7fa03ad91dbe749