[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/16a6150c4ef3b509935e0bef384e69663b6e5690 against try#4d98531622e1718ae0bc3c7a1ab9cd8938428452+rustflags=-Dtail_expr_drop_order for pr-129604 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Favrong%2Frpi-rust-experiments" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/avrong/rpi-rust-experiments on toolchain 4d98531622e1718ae0bc3c7a1ab9cd8938428452 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [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-5-tc2/source/Cargo.toml [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" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] a5e2e3d6c4b75487ca1e12ae16da3959bb3a76a5fbf1b08a41f87992ab9718a0 [INFO] running `Command { std: "docker" "start" "-a" "a5e2e3d6c4b75487ca1e12ae16da3959bb3a76a5fbf1b08a41f87992ab9718a0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "a5e2e3d6c4b75487ca1e12ae16da3959bb3a76a5fbf1b08a41f87992ab9718a0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a5e2e3d6c4b75487ca1e12ae16da3959bb3a76a5fbf1b08a41f87992ab9718a0", kill_on_drop: false }` [INFO] [stdout] a5e2e3d6c4b75487ca1e12ae16da3959bb3a76a5fbf1b08a41f87992ab9718a0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Dtail_expr_drop_order" "-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] d3c2e13be38c1a3e7723dd9df5a5498a756e783ecd6d3d2321f0bde71a44a5c2 [INFO] running `Command { std: "docker" "start" "-a" "d3c2e13be38c1a3e7723dd9df5a5498a756e783ecd6d3d2321f0bde71a44a5c2", 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: 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)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [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)]` 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)]` 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: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/bin/flowing_leds.rs:11:30 [INFO] [stdout] | [INFO] [stdout] 11 | .filter_map(|x| Some(Gpio::new().ok()?.get(*x).ok()?.into_output_high())) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] = note: requested on the command line with `-D tail-expr-drop-order` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `rpi-rust-experiments` (bin "flowing_leds") due to 2 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [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)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/bin/flowing_leds.rs:11:30 [INFO] [stdout] | [INFO] [stdout] 11 | .filter_map(|x| Some(Gpio::new().ok()?.get(*x).ok()?.into_output_high())) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] = note: requested on the command line with `-D tail-expr-drop-order` [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)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error [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)]` 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: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `rpi-rust-experiments` (bin "flowing_leds" test) due to 2 previous errors [INFO] running `Command { std: "docker" "inspect" "d3c2e13be38c1a3e7723dd9df5a5498a756e783ecd6d3d2321f0bde71a44a5c2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d3c2e13be38c1a3e7723dd9df5a5498a756e783ecd6d3d2321f0bde71a44a5c2", kill_on_drop: false }` [INFO] [stdout] d3c2e13be38c1a3e7723dd9df5a5498a756e783ecd6d3d2321f0bde71a44a5c2