Dec 04 16:33:00.526 INFO checking jmacdonald/bright against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 04 16:33:00.526 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-4/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 04 16:33:00.694 INFO [stdout] fbe15f6eae31e3e8c04eaf0921dfc97e63c163449812ea356a726f7d32293341
Dec 04 16:33:00.696 INFO running `"docker" "start" "-a" "fbe15f6eae31e3e8c04eaf0921dfc97e63c163449812ea356a726f7d32293341"`
Dec 04 16:33:01.438 INFO [stderr] usermod: no changes
Dec 04 16:33:01.509 INFO [stderr]     Checking bright v0.1.0 (/source)
Dec 04 16:33:01.959 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 16:33:01.959 INFO [stderr]   --> src/main.rs:17:5
Dec 04 16:33:01.959 INFO [stderr]    |
Dec 04 16:33:01.959 INFO [stderr] 17 | /     File::open(Path::new("/sys/class/backlight/intel_backlight/actual_brightness"))
Dec 04 16:33:01.959 INFO [stderr] 18 | |         .expect("Couldn't read current brightness.")
Dec 04 16:33:01.959 INFO [stderr] 19 | |         .read_to_string(&mut current_brightness);
Dec 04 16:33:01.959 INFO [stderr]    | |_________________________________________________^
Dec 04 16:33:01.959 INFO [stderr]    |
Dec 04 16:33:01.959 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 04 16:33:01.959 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 16:33:01.959 INFO [stderr] 
Dec 04 16:33:01.959 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 16:33:01.959 INFO [stderr]   --> src/main.rs:28:5
Dec 04 16:33:01.959 INFO [stderr]    |
Dec 04 16:33:01.959 INFO [stderr] 28 | /     File::open(Path::new("/sys/class/backlight/intel_backlight/max_brightness"))
Dec 04 16:33:01.959 INFO [stderr] 29 | |         .expect("Couldn't read max brightness.")
Dec 04 16:33:01.959 INFO [stderr] 30 | |         .read_to_string(&mut max_brightness);
Dec 04 16:33:01.959 INFO [stderr]    | |_____________________________________________^
Dec 04 16:33:01.959 INFO [stderr]    |
Dec 04 16:33:01.959 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 16:33:01.959 INFO [stderr] 
Dec 04 16:33:02.014 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 16:33:02.015 INFO [stderr]   --> src/main.rs:17:5
Dec 04 16:33:02.015 INFO [stderr]    |
Dec 04 16:33:02.015 INFO [stderr] 17 | /     File::open(Path::new("/sys/class/backlight/intel_backlight/actual_brightness"))
Dec 04 16:33:02.015 INFO [stderr] 18 | |         .expect("Couldn't read current brightness.")
Dec 04 16:33:02.015 INFO [stderr] 19 | |         .read_to_string(&mut current_brightness);
Dec 04 16:33:02.015 INFO [stderr]    | |_________________________________________________^
Dec 04 16:33:02.015 INFO [stderr]    |
Dec 04 16:33:02.015 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 04 16:33:02.015 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 16:33:02.015 INFO [stderr] 
Dec 04 16:33:02.015 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 16:33:02.015 INFO [stderr]   --> src/main.rs:28:5
Dec 04 16:33:02.015 INFO [stderr]    |
Dec 04 16:33:02.015 INFO [stderr] 28 | /     File::open(Path::new("/sys/class/backlight/intel_backlight/max_brightness"))
Dec 04 16:33:02.015 INFO [stderr] 29 | |         .expect("Couldn't read max brightness.")
Dec 04 16:33:02.015 INFO [stderr] 30 | |         .read_to_string(&mut max_brightness);
Dec 04 16:33:02.015 INFO [stderr]    | |_____________________________________________^
Dec 04 16:33:02.015 INFO [stderr]    |
Dec 04 16:33:02.015 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 16:33:02.015 INFO [stderr] 
Dec 04 16:33:02.032 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.57s
Dec 04 16:33:02.035 INFO [stderr] su: No module specific data is present
Dec 04 16:33:02.501 INFO running `"docker" "inspect" "fbe15f6eae31e3e8c04eaf0921dfc97e63c163449812ea356a726f7d32293341"`
Dec 04 16:33:02.789 INFO running `"docker" "rm" "-f" "fbe15f6eae31e3e8c04eaf0921dfc97e63c163449812ea356a726f7d32293341"`
Dec 04 16:33:03.010 INFO [stdout] fbe15f6eae31e3e8c04eaf0921dfc97e63c163449812ea356a726f7d32293341