[INFO] fetching crate rainbow-hat-rs 0.2.1... [INFO] checking rainbow-hat-rs-0.2.1 against try#4d98531622e1718ae0bc3c7a1ab9cd8938428452+rustflags=-Dtail_expr_drop_order for pr-129604 [INFO] extracting crate rainbow-hat-rs 0.2.1 into /workspace/builds/worker-6-tc2/source [INFO] validating manifest of crates.io crate rainbow-hat-rs 0.2.1 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 crates.io crate rainbow-hat-rs 0.2.1 [INFO] finished tweaking crates.io crate rainbow-hat-rs 0.2.1 [INFO] tweaked toml for crates.io crate rainbow-hat-rs 0.2.1 written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] crate crates.io crate rainbow-hat-rs 0.2.1 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-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 3d630f136951484254fd6043f9d9ade82c7b8fa83863bb9c805e92edbb488b17 [INFO] running `Command { std: "docker" "start" "-a" "3d630f136951484254fd6043f9d9ade82c7b8fa83863bb9c805e92edbb488b17", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "3d630f136951484254fd6043f9d9ade82c7b8fa83863bb9c805e92edbb488b17", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3d630f136951484254fd6043f9d9ade82c7b8fa83863bb9c805e92edbb488b17", kill_on_drop: false }` [INFO] [stdout] 3d630f136951484254fd6043f9d9ade82c7b8fa83863bb9c805e92edbb488b17 [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 -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] d7c0a397637f1865a6cbb2f0d07c897aab49889b2b290d5eabd9ac8f7859e2e4 [INFO] running `Command { std: "docker" "start" "-a" "d7c0a397637f1865a6cbb2f0d07c897aab49889b2b290d5eabd9ac8f7859e2e4", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.74 [INFO] [stderr] Compiling proc-macro2 v1.0.19 [INFO] [stderr] Compiling ppv-lite86 v0.2.8 [INFO] [stderr] Compiling syn v1.0.38 [INFO] [stderr] Compiling serde v1.0.126 [INFO] [stderr] Compiling proc-macro-hack v0.5.19 [INFO] [stderr] Compiling siphasher v0.3.3 [INFO] [stderr] Compiling autocfg v1.0.0 [INFO] [stderr] Compiling phf_shared v0.9.0 [INFO] [stderr] Compiling num-traits v0.2.12 [INFO] [stderr] Compiling palette v0.6.0 [INFO] [stderr] Compiling quote v1.0.7 [INFO] [stderr] Compiling getrandom v0.2.3 [INFO] [stderr] Checking rppal v0.12.0 [INFO] [stderr] Compiling rand_core v0.6.3 [INFO] [stderr] Compiling rand_chacha v0.3.1 [INFO] [stderr] Checking approx v0.5.0 [INFO] [stderr] Checking rainbow-hat-rs v0.2.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: field `brightness` is never read [INFO] [stdout] --> src/apa102.rs:42:5 [INFO] [stdout] | [INFO] [stdout] 27 | pub struct APA102 { [INFO] [stdout] | ------ field in this struct [INFO] [stdout] ... [INFO] [stdout] 42 | brightness: u8, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `APA102` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_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/alphanum4.rs:124:12 [INFO] [stdout] | [INFO] [stdout] 121 | let ht16k33 = HT16K33::new()?; [INFO] [stdout] | ------- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 124 | Ok(Self { [INFO] [stdout] | ____________^ [INFO] [stdout] 125 | | ht16k33, [INFO] [stdout] 126 | | digit_value, [INFO] [stdout] 127 | | }) [INFO] [stdout] | | ^ [INFO] [stdout] | | | [INFO] [stdout] | | these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] | |_________these values have significant drop implementation and will observe changes in drop order under Edition 2024 [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; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling rand v0.8.4 [INFO] [stderr] error: could not compile `rainbow-hat-rs` (lib) due to 2 previous errors; 1 warning emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "d7c0a397637f1865a6cbb2f0d07c897aab49889b2b290d5eabd9ac8f7859e2e4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d7c0a397637f1865a6cbb2f0d07c897aab49889b2b290d5eabd9ac8f7859e2e4", kill_on_drop: false }` [INFO] [stdout] d7c0a397637f1865a6cbb2f0d07c897aab49889b2b290d5eabd9ac8f7859e2e4