Dec 13 15:21:55.615 INFO testing jmacdonald/bright against try#aa49d8ef14939ddec0e34b346b60174a5673d48f for pr-56550
Dec 13 15:21:55.615 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-0/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-alt build --frozen" "-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 13 15:21:55.943 INFO [stdout] 5de44ae1eb1d08fd974114a0ce1228fab2dd6b90f1ee3b716591a1002f2f43d9
Dec 13 15:21:55.949 INFO running `"docker" "start" "-a" "5de44ae1eb1d08fd974114a0ce1228fab2dd6b90f1ee3b716591a1002f2f43d9"`
Dec 13 15:21:56.647 INFO [stderr] usermod: no changes
Dec 13 15:21:56.675 INFO [stderr]    Compiling bright v0.1.0 (/source)
Dec 13 15:21:56.999 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 15:21:57.000 INFO [stderr]   --> src/main.rs:17:5
Dec 13 15:21:57.000 INFO [stderr]    |
Dec 13 15:21:57.000 INFO [stderr] 17 | /     File::open(Path::new("/sys/class/backlight/intel_backlight/actual_brightness"))
Dec 13 15:21:57.000 INFO [stderr] 18 | |         .expect("Couldn't read current brightness.")
Dec 13 15:21:57.000 INFO [stderr] 19 | |         .read_to_string(&mut current_brightness);
Dec 13 15:21:57.000 INFO [stderr]    | |_________________________________________________^
Dec 13 15:21:57.000 INFO [stderr]    |
Dec 13 15:21:57.000 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 13 15:21:57.000 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 15:21:57.000 INFO [stderr] 
Dec 13 15:21:57.003 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 15:21:57.003 INFO [stderr]   --> src/main.rs:28:5
Dec 13 15:21:57.003 INFO [stderr]    |
Dec 13 15:21:57.003 INFO [stderr] 28 | /     File::open(Path::new("/sys/class/backlight/intel_backlight/max_brightness"))
Dec 13 15:21:57.003 INFO [stderr] 29 | |         .expect("Couldn't read max brightness.")
Dec 13 15:21:57.003 INFO [stderr] 30 | |         .read_to_string(&mut max_brightness);
Dec 13 15:21:57.003 INFO [stderr]    | |_____________________________________________^
Dec 13 15:21:57.003 INFO [stderr]    |
Dec 13 15:21:57.003 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 15:21:57.003 INFO [stderr] 
Dec 13 15:21:57.476 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.81s
Dec 13 15:21:57.483 INFO [stderr] su: No module specific data is present
Dec 13 15:21:57.988 INFO running `"docker" "inspect" "5de44ae1eb1d08fd974114a0ce1228fab2dd6b90f1ee3b716591a1002f2f43d9"`
Dec 13 15:21:58.187 INFO running `"docker" "rm" "-f" "5de44ae1eb1d08fd974114a0ce1228fab2dd6b90f1ee3b716591a1002f2f43d9"`
Dec 13 15:21:58.410 INFO [stdout] 5de44ae1eb1d08fd974114a0ce1228fab2dd6b90f1ee3b716591a1002f2f43d9
Dec 13 15:21:58.419 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-0/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-alt test --frozen --no-run" "-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 13 15:21:58.994 INFO [stdout] 13e5ef0804cfbf1f73d8be2719e2af92aff14c4d60a5f72e357ee4da3ace9462
Dec 13 15:21:58.996 INFO running `"docker" "start" "-a" "13e5ef0804cfbf1f73d8be2719e2af92aff14c4d60a5f72e357ee4da3ace9462"`
Dec 13 15:21:59.722 INFO [stderr] usermod: no changes
Dec 13 15:21:59.751 INFO [stderr]    Compiling bright v0.1.0 (/source)
Dec 13 15:22:00.111 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 15:22:00.111 INFO [stderr]   --> src/main.rs:17:5
Dec 13 15:22:00.111 INFO [stderr]    |
Dec 13 15:22:00.111 INFO [stderr] 17 | /     File::open(Path::new("/sys/class/backlight/intel_backlight/actual_brightness"))
Dec 13 15:22:00.111 INFO [stderr] 18 | |         .expect("Couldn't read current brightness.")
Dec 13 15:22:00.111 INFO [stderr] 19 | |         .read_to_string(&mut current_brightness);
Dec 13 15:22:00.111 INFO [stderr]    | |_________________________________________________^
Dec 13 15:22:00.111 INFO [stderr]    |
Dec 13 15:22:00.111 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 13 15:22:00.111 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 15:22:00.111 INFO [stderr] 
Dec 13 15:22:00.111 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 15:22:00.111 INFO [stderr]   --> src/main.rs:28:5
Dec 13 15:22:00.111 INFO [stderr]    |
Dec 13 15:22:00.111 INFO [stderr] 28 | /     File::open(Path::new("/sys/class/backlight/intel_backlight/max_brightness"))
Dec 13 15:22:00.111 INFO [stderr] 29 | |         .expect("Couldn't read max brightness.")
Dec 13 15:22:00.111 INFO [stderr] 30 | |         .read_to_string(&mut max_brightness);
Dec 13 15:22:00.111 INFO [stderr]    | |_____________________________________________^
Dec 13 15:22:00.111 INFO [stderr]    |
Dec 13 15:22:00.118 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 15:22:00.119 INFO [stderr] 
Dec 13 15:22:00.382 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.64s
Dec 13 15:22:00.382 INFO [stderr] su: No module specific data is present
Dec 13 15:22:00.727 INFO running `"docker" "inspect" "13e5ef0804cfbf1f73d8be2719e2af92aff14c4d60a5f72e357ee4da3ace9462"`
Dec 13 15:22:00.863 INFO running `"docker" "rm" "-f" "13e5ef0804cfbf1f73d8be2719e2af92aff14c4d60a5f72e357ee4da3ace9462"`
Dec 13 15:22:01.005 INFO [stdout] 13e5ef0804cfbf1f73d8be2719e2af92aff14c4d60a5f72e357ee4da3ace9462
Dec 13 15:22:01.007 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-0/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-alt test --frozen" "-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 13 15:22:01.243 INFO [stdout] 0a9dfd4651ff8e07b821c72bfe94766945f4ed5546e07d4e989769a4ed6acebf
Dec 13 15:22:01.248 INFO running `"docker" "start" "-a" "0a9dfd4651ff8e07b821c72bfe94766945f4ed5546e07d4e989769a4ed6acebf"`
Dec 13 15:22:01.752 INFO [stderr] usermod: no changes
Dec 13 15:22:01.780 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
Dec 13 15:22:01.780 INFO [stderr]      Running /target/debug/deps/bright-16bda63e211967c4
Dec 13 15:22:01.782 INFO [stdout] 
Dec 13 15:22:01.782 INFO [stdout] running 0 tests
Dec 13 15:22:01.782 INFO [stdout] 
Dec 13 15:22:01.782 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 13 15:22:01.782 INFO [stdout] 
Dec 13 15:22:01.784 INFO [stderr] su: No module specific data is present
Dec 13 15:22:02.096 INFO running `"docker" "inspect" "0a9dfd4651ff8e07b821c72bfe94766945f4ed5546e07d4e989769a4ed6acebf"`
Dec 13 15:22:02.181 INFO running `"docker" "rm" "-f" "0a9dfd4651ff8e07b821c72bfe94766945f4ed5546e07d4e989769a4ed6acebf"`
Dec 13 15:22:02.291 INFO [stdout] 0a9dfd4651ff8e07b821c72bfe94766945f4ed5546e07d4e989769a4ed6acebf