[INFO] cloning repository https://github.com/avrong/rpi-rust-experiments
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/avrong/rpi-rust-experiments" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Favrong%2Frpi-rust-experiments", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Favrong%2Frpi-rust-experiments'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 16a6150c4ef3b509935e0bef384e69663b6e5690
[INFO] checking avrong/rpi-rust-experiments against try#b1f2594eac607c1f051534800237eeedb5590a49 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Favrong%2Frpi-rust-experiments" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/avrong/rpi-rust-experiments
[INFO] finished tweaking git repo https://github.com/avrong/rpi-rust-experiments
[INFO] tweaked toml for git repo https://github.com/avrong/rpi-rust-experiments written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/avrong/rpi-rust-experiments on toolchain b1f2594eac607c1f051534800237eeedb5590a49
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/avrong/rpi-rust-experiments already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1a4b2d59d8598f43758b5740cf297a31981edf32237ee2b7bf0208d6db529736
[INFO] running `Command { std: "docker" "start" "-a" "1a4b2d59d8598f43758b5740cf297a31981edf32237ee2b7bf0208d6db529736", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1a4b2d59d8598f43758b5740cf297a31981edf32237ee2b7bf0208d6db529736", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a4b2d59d8598f43758b5740cf297a31981edf32237ee2b7bf0208d6db529736", kill_on_drop: false }`
[INFO] [stdout] 1a4b2d59d8598f43758b5740cf297a31981edf32237ee2b7bf0208d6db529736
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6768b372b8c32ea43381e52e5dbea4288f849502b4d8d2b9c2c89f5ab3c3f0be
[INFO] running `Command { std: "docker" "start" "-a" "6768b372b8c32ea43381e52e5dbea4288f849502b4d8d2b9c2c89f5ab3c3f0be", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]     Checking rppal v0.13.1
[INFO] [stderr]     Checking rpi-rust-experiments v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/button_led_state.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     button_pin.set_interrupt(Trigger::FallingEdge);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let _ = button_pin.set_interrupt(Trigger::FallingEdge);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/bin/breathing_led.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let mut led_pin = Pwm::new(Channel::Pwm0)?;
[INFO] [stdout]   |         ----^^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/bin/buzzer.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | /     loop {
[INFO] [stdout] 13 | |         beep_pin.set_high();
[INFO] [stdout] 14 | |         thread::sleep(Duration::from_millis(500));
[INFO] [stdout] ...  |
[INFO] [stdout] 17 | |         thread::sleep(Duration::from_millis(500));
[INFO] [stdout] 18 | |     }
[INFO] [stdout]    | |_____- any code following this expression is unreachable
[INFO] [stdout] 19 |
[INFO] [stdout] 20 |       Ok(())
[INFO] [stdout]    |       ^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/bin/buzzer.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | /     loop {
[INFO] [stdout] 13 | |         beep_pin.set_high();
[INFO] [stdout] 14 | |         thread::sleep(Duration::from_millis(500));
[INFO] [stdout] ...  |
[INFO] [stdout] 17 | |         thread::sleep(Duration::from_millis(500));
[INFO] [stdout] 18 | |     }
[INFO] [stdout]    | |_____- any code following this expression is unreachable
[INFO] [stdout] 19 |
[INFO] [stdout] 20 |       Ok(())
[INFO] [stdout]    |       ^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/bin/breathing_led.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let mut led_pin = Pwm::new(Channel::Pwm0)?;
[INFO] [stdout]   |         ----^^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/button_led_state.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     button_pin.set_interrupt(Trigger::FallingEdge);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let _ = button_pin.set_interrupt(Trigger::FallingEdge);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.84s
[INFO] running `Command { std: "docker" "inspect" "6768b372b8c32ea43381e52e5dbea4288f849502b4d8d2b9c2c89f5ab3c3f0be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6768b372b8c32ea43381e52e5dbea4288f849502b4d8d2b9c2c89f5ab3c3f0be", kill_on_drop: false }`
[INFO] [stdout] 6768b372b8c32ea43381e52e5dbea4288f849502b4d8d2b9c2c89f5ab3c3f0be
