[INFO] updating cached repository https://github.com/jmacdonald/bright
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 13c238822530040ee171ae27a1d266eea7cea84d
[INFO] testing jmacdonald/bright against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjmacdonald%2Fbright" "/workspace/builds/worker-3/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jmacdonald/bright on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/jmacdonald/bright
[INFO] finished tweaking git repo https://github.com/jmacdonald/bright
[INFO] tweaked toml for git repo https://github.com/jmacdonald/bright written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/jmacdonald/bright already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stdout] 24e1dff41da49895d17b2b8f3af144fe2a6ed11749fa1aaf976e59cf68433888
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "24e1dff41da49895d17b2b8f3af144fe2a6ed11749fa1aaf976e59cf68433888"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling bright v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 | /     File::open(Path::new("/sys/class/backlight/intel_backlight/actual_brightness"))
[INFO] [stderr] 26 | |         .expect("Couldn't read current brightness.")
[INFO] [stderr] 27 | |         .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:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 | /     File::open(Path::new("/sys/class/backlight/intel_backlight/max_brightness"))
[INFO] [stderr] 37 | |         .expect("Couldn't read max brightness.")
[INFO] [stderr] 38 | |         .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] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.09s
[INFO] running `"docker" "inspect" "24e1dff41da49895d17b2b8f3af144fe2a6ed11749fa1aaf976e59cf68433888"`
[INFO] running `"docker" "rm" "-f" "24e1dff41da49895d17b2b8f3af144fe2a6ed11749fa1aaf976e59cf68433888"`
[INFO] [stdout] 24e1dff41da49895d17b2b8f3af144fe2a6ed11749fa1aaf976e59cf68433888
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8744b162fe1ec01ee0deeb8758be065d3e510f74aa550f2279a2c605fdf8e712
[INFO] running `"docker" "start" "-a" "8744b162fe1ec01ee0deeb8758be065d3e510f74aa550f2279a2c605fdf8e712"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling bright v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 | /     File::open(Path::new("/sys/class/backlight/intel_backlight/actual_brightness"))
[INFO] [stderr] 26 | |         .expect("Couldn't read current brightness.")
[INFO] [stderr] 27 | |         .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:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 | /     File::open(Path::new("/sys/class/backlight/intel_backlight/max_brightness"))
[INFO] [stderr] 37 | |         .expect("Couldn't read max brightness.")
[INFO] [stderr] 38 | |         .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] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `"docker" "inspect" "8744b162fe1ec01ee0deeb8758be065d3e510f74aa550f2279a2c605fdf8e712"`
[INFO] running `"docker" "rm" "-f" "8744b162fe1ec01ee0deeb8758be065d3e510f74aa550f2279a2c605fdf8e712"`
[INFO] [stdout] 8744b162fe1ec01ee0deeb8758be065d3e510f74aa550f2279a2c605fdf8e712
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 120f311cf7f9f0d4d17cd32011c95bcd76c82d1a6ebcff2f906e7383717a7512
[INFO] running `"docker" "start" "-a" "120f311cf7f9f0d4d17cd32011c95bcd76c82d1a6ebcff2f906e7383717a7512"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stdout] 
[INFO] [stderr]   --> src/main.rs:25:5
[INFO] [stdout] running 0 tests
[INFO] [stderr]    |
[INFO] [stdout] 
[INFO] [stderr] 25 | /     File::open(Path::new("/sys/class/backlight/intel_backlight/actual_brightness"))
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stderr] 26 | |         .expect("Couldn't read current brightness.")
[INFO] [stdout] 
[INFO] [stderr] 27 | |         .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:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 | /     File::open(Path::new("/sys/class/backlight/intel_backlight/max_brightness"))
[INFO] [stderr] 37 | |         .expect("Couldn't read max brightness.")
[INFO] [stderr] 38 | |         .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] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/bright-5acf9e2497f501d3
[INFO] running `"docker" "inspect" "120f311cf7f9f0d4d17cd32011c95bcd76c82d1a6ebcff2f906e7383717a7512"`
[INFO] running `"docker" "rm" "-f" "120f311cf7f9f0d4d17cd32011c95bcd76c82d1a6ebcff2f906e7383717a7512"`
[INFO] [stdout] 120f311cf7f9f0d4d17cd32011c95bcd76c82d1a6ebcff2f906e7383717a7512