Dec 19 15:05:34.181 INFO checking jmacdonald/bright against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 15:05:34.181 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-5/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/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=forbid" "-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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 15:05:34.369 INFO [stdout] ac66566f6a6f5ec7c550b854dd5e2f4377ae80747f655307abdc2e76e3d81f67
Dec 19 15:05:34.371 INFO running `"docker" "start" "-a" "ac66566f6a6f5ec7c550b854dd5e2f4377ae80747f655307abdc2e76e3d81f67"`
Dec 19 15:05:35.215 INFO [stderr]     Checking bright v0.1.0 (/opt/crater/workdir)
Dec 19 15:05:35.427 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 15:05:35.427 INFO [stderr]   --> src/main.rs:17:5
Dec 19 15:05:35.427 INFO [stderr]    |
Dec 19 15:05:35.427 INFO [stderr] 17 | /     File::open(Path::new("/sys/class/backlight/intel_backlight/actual_brightness"))
Dec 19 15:05:35.427 INFO [stderr] 18 | |         .expect("Couldn't read current brightness.")
Dec 19 15:05:35.427 INFO [stderr] 19 | |         .read_to_string(&mut current_brightness);
Dec 19 15:05:35.427 INFO [stderr]    | |_________________________________________________^
Dec 19 15:05:35.427 INFO [stderr]    |
Dec 19 15:05:35.427 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 15:05:35.427 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 15:05:35.427 INFO [stderr] 
Dec 19 15:05:35.427 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 15:05:35.427 INFO [stderr]   --> src/main.rs:28:5
Dec 19 15:05:35.427 INFO [stderr]    |
Dec 19 15:05:35.427 INFO [stderr] 28 | /     File::open(Path::new("/sys/class/backlight/intel_backlight/max_brightness"))
Dec 19 15:05:35.427 INFO [stderr] 29 | |         .expect("Couldn't read max brightness.")
Dec 19 15:05:35.427 INFO [stderr] 30 | |         .read_to_string(&mut max_brightness);
Dec 19 15:05:35.427 INFO [stderr]    | |_____________________________________________^
Dec 19 15:05:35.427 INFO [stderr]    |
Dec 19 15:05:35.427 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 15:05:35.427 INFO [stderr] 
Dec 19 15:05:35.522 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 15:05:35.522 INFO [stderr]   --> src/main.rs:17:5
Dec 19 15:05:35.522 INFO [stderr]    |
Dec 19 15:05:35.523 INFO [stderr] 17 | /     File::open(Path::new("/sys/class/backlight/intel_backlight/actual_brightness"))
Dec 19 15:05:35.523 INFO [stderr] 18 | |         .expect("Couldn't read current brightness.")
Dec 19 15:05:35.523 INFO [stderr] 19 | |         .read_to_string(&mut current_brightness);
Dec 19 15:05:35.523 INFO [stderr]    | |_________________________________________________^
Dec 19 15:05:35.523 INFO [stderr]    |
Dec 19 15:05:35.523 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 15:05:35.523 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 15:05:35.523 INFO [stderr] 
Dec 19 15:05:35.523 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 15:05:35.523 INFO [stderr]   --> src/main.rs:28:5
Dec 19 15:05:35.523 INFO [stderr]    |
Dec 19 15:05:35.523 INFO [stderr] 28 | /     File::open(Path::new("/sys/class/backlight/intel_backlight/max_brightness"))
Dec 19 15:05:35.523 INFO [stderr] 29 | |         .expect("Couldn't read max brightness.")
Dec 19 15:05:35.523 INFO [stderr] 30 | |         .read_to_string(&mut max_brightness);
Dec 19 15:05:35.523 INFO [stderr]    | |_____________________________________________^
Dec 19 15:05:35.523 INFO [stderr]    |
Dec 19 15:05:35.523 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 15:05:35.523 INFO [stderr] 
Dec 19 15:05:35.556 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.35s
Dec 19 15:05:36.122 INFO running `"docker" "inspect" "ac66566f6a6f5ec7c550b854dd5e2f4377ae80747f655307abdc2e76e3d81f67"`
Dec 19 15:05:36.349 INFO running `"docker" "rm" "-f" "ac66566f6a6f5ec7c550b854dd5e2f4377ae80747f655307abdc2e76e3d81f67"`
Dec 19 15:05:36.491 INFO [stdout] ac66566f6a6f5ec7c550b854dd5e2f4377ae80747f655307abdc2e76e3d81f67