Dec 19 15:05:35.251 INFO checking jmacdonald/bright against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 15:05:35.252 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-4/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 15:05:35.735 INFO [stdout] 19e8f156726e2beb2fd9686b6a04d027f95bf4637c5c26a7f03aac3bd4401acb
Dec 19 15:05:35.744 INFO running `"docker" "start" "-a" "19e8f156726e2beb2fd9686b6a04d027f95bf4637c5c26a7f03aac3bd4401acb"`
Dec 19 15:05:36.685 INFO [stderr]     Checking bright v0.1.0 (/opt/crater/workdir)
Dec 19 15:05:36.885 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 15:05:36.888 INFO [stderr]   --> src/main.rs:17:5
Dec 19 15:05:36.888 INFO [stderr]    |
Dec 19 15:05:36.888 INFO [stderr] 17 | /     File::open(Path::new("/sys/class/backlight/intel_backlight/actual_brightness"))
Dec 19 15:05:36.888 INFO [stderr] 18 | |         .expect("Couldn't read current brightness.")
Dec 19 15:05:36.888 INFO [stderr] 19 | |         .read_to_string(&mut current_brightness);
Dec 19 15:05:36.888 INFO [stderr]    | |_________________________________________________^
Dec 19 15:05:36.888 INFO [stderr]    |
Dec 19 15:05:36.888 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 15:05:36.888 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 15:05:36.888 INFO [stderr] 
Dec 19 15:05:36.888 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 15:05:36.888 INFO [stderr]   --> src/main.rs:28:5
Dec 19 15:05:36.888 INFO [stderr]    |
Dec 19 15:05:36.888 INFO [stderr] 28 | /     File::open(Path::new("/sys/class/backlight/intel_backlight/max_brightness"))
Dec 19 15:05:36.888 INFO [stderr] 29 | |         .expect("Couldn't read max brightness.")
Dec 19 15:05:36.888 INFO [stderr] 30 | |         .read_to_string(&mut max_brightness);
Dec 19 15:05:36.888 INFO [stderr]    | |_____________________________________________^
Dec 19 15:05:36.888 INFO [stderr]    |
Dec 19 15:05:36.888 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 15:05:36.889 INFO [stderr] 
Dec 19 15:05:36.899 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 15:05:36.899 INFO [stderr]   --> src/main.rs:17:5
Dec 19 15:05:36.899 INFO [stderr]    |
Dec 19 15:05:36.899 INFO [stderr] 17 | /     File::open(Path::new("/sys/class/backlight/intel_backlight/actual_brightness"))
Dec 19 15:05:36.899 INFO [stderr] 18 | |         .expect("Couldn't read current brightness.")
Dec 19 15:05:36.899 INFO [stderr] 19 | |         .read_to_string(&mut current_brightness);
Dec 19 15:05:36.900 INFO [stderr]    | |_________________________________________________^
Dec 19 15:05:36.900 INFO [stderr]    |
Dec 19 15:05:36.900 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 15:05:36.900 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 15:05:36.900 INFO [stderr] 
Dec 19 15:05:36.900 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 15:05:36.900 INFO [stderr]   --> src/main.rs:28:5
Dec 19 15:05:36.900 INFO [stderr]    |
Dec 19 15:05:36.900 INFO [stderr] 28 | /     File::open(Path::new("/sys/class/backlight/intel_backlight/max_brightness"))
Dec 19 15:05:36.900 INFO [stderr] 29 | |         .expect("Couldn't read max brightness.")
Dec 19 15:05:36.900 INFO [stderr] 30 | |         .read_to_string(&mut max_brightness);
Dec 19 15:05:36.900 INFO [stderr]    | |_____________________________________________^
Dec 19 15:05:36.900 INFO [stderr]    |
Dec 19 15:05:36.900 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 15:05:36.900 INFO [stderr] 
Dec 19 15:05:36.910 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.24s
Dec 19 15:05:37.196 INFO running `"docker" "inspect" "19e8f156726e2beb2fd9686b6a04d027f95bf4637c5c26a7f03aac3bd4401acb"`
Dec 19 15:05:37.284 INFO running `"docker" "rm" "-f" "19e8f156726e2beb2fd9686b6a04d027f95bf4637c5c26a7f03aac3bd4401acb"`
Dec 19 15:05:37.404 INFO [stdout] 19e8f156726e2beb2fd9686b6a04d027f95bf4637c5c26a7f03aac3bd4401acb