[INFO] fetching crate bare_cnr 0.1.0-alpha.1... [INFO] checking bare_cnr-0.1.0-alpha.1 against try#4d98531622e1718ae0bc3c7a1ab9cd8938428452+rustflags=-Dtail_expr_drop_order for pr-129604 [INFO] extracting crate bare_cnr 0.1.0-alpha.1 into /workspace/builds/worker-7-tc2/source [INFO] validating manifest of crates.io crate bare_cnr 0.1.0-alpha.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 bare_cnr 0.1.0-alpha.1 [INFO] finished tweaking crates.io crate bare_cnr 0.1.0-alpha.1 [INFO] tweaked toml for crates.io crate bare_cnr 0.1.0-alpha.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 66 packages to latest compatible versions [INFO] [stderr] Adding addr2line v0.22.0 (latest: v0.24.1) [INFO] [stderr] Adding dashmap v5.5.3 (latest: v6.0.1) [INFO] [stderr] Adding gimli v0.29.0 (latest: v0.31.0) [INFO] [stderr] Adding hermit-abi v0.3.9 (latest: v0.4.0) [INFO] [stderr] Adding miniz_oxide v0.7.4 (latest: v0.8.0) [INFO] [stderr] Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.2+wasi-0.2.1) [INFO] [stderr] Adding windows-sys v0.52.0 (latest: v0.59.0) [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] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] ba87ed994bd2d3ca88b21c9071739dc77b9c49afd47b0605bab2d2f736b71140 [INFO] running `Command { std: "docker" "start" "-a" "ba87ed994bd2d3ca88b21c9071739dc77b9c49afd47b0605bab2d2f736b71140", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ba87ed994bd2d3ca88b21c9071739dc77b9c49afd47b0605bab2d2f736b71140", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ba87ed994bd2d3ca88b21c9071739dc77b9c49afd47b0605bab2d2f736b71140", kill_on_drop: false }` [INFO] [stdout] ba87ed994bd2d3ca88b21c9071739dc77b9c49afd47b0605bab2d2f736b71140 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] d129b2d50afa2696d9ae8716bbe65810b8cf6b8fe7f403bfdea759740c9598d9 [INFO] running `Command { std: "docker" "start" "-a" "d129b2d50afa2696d9ae8716bbe65810b8cf6b8fe7f403bfdea759740c9598d9", kill_on_drop: false }` [INFO] [stderr] Checking hashbrown v0.14.5 [INFO] [stderr] Compiling serde v1.0.209 [INFO] [stderr] Compiling tokio-macros v2.4.0 [INFO] [stderr] Compiling async-stream-impl v0.3.5 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stderr] Checking tokio v1.40.0 [INFO] [stderr] Checking async-stream v0.3.5 [INFO] [stderr] Checking dashmap v5.5.3 [INFO] [stderr] Checking serde_bare v0.5.0 [INFO] [stderr] Checking tokio-stream v0.1.15 [INFO] [stderr] Checking bare_cnr v0.1.0-alpha.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `err` [INFO] [stdout] --> src/multiplexer.rs:150:32 [INFO] [stdout] | [INFO] [stdout] 150 | if let Err(err) = oe.get().send(buf).await { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_err` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `task_tx` and `task_rx` are never read [INFO] [stdout] --> src/multiplexer.rs:16:5 [INFO] [stdout] | [INFO] [stdout] 15 | pub struct TransportMultiplexer { [INFO] [stdout] | -------------------- fields in this struct [INFO] [stdout] 16 | task_tx: JoinHandle<()>, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] 17 | task_rx: JoinHandle<()>, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [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/multiplexer.rs:63:12 [INFO] [stdout] | [INFO] [stdout] 39 | rx: R, [INFO] [stdout] | ----- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] 40 | tx: W, [INFO] [stdout] | ----- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 43 | let (txqueue_tx, txqueue_rx) = tokio::sync::mpsc::channel(8); [INFO] [stdout] | ---------- ---------- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] | | [INFO] [stdout] | these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] 44 | [INFO] [stdout] 45 | let channels = Arc::new(Default::default()); [INFO] [stdout] | -------- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] 46 | let unclaimed_channels = Arc::new(Default::default()); [INFO] [stdout] | ------------------ these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] 47 | [INFO] [stdout] 48 | let task_tx = tokio::spawn(async move { [INFO] [stdout] | ------- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 53 | let channels2 = Arc::clone(&channels); [INFO] [stdout] | --------- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] 54 | let unclaimed_channels2 = Arc::clone(&unclaimed_channels); [INFO] [stdout] | ------------------- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] 55 | let task_rx = tokio::spawn(async move { [INFO] [stdout] | ------- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 63 | Ok(Arc::new(TransportMultiplexer { [INFO] [stdout] | ____________^ [INFO] [stdout] 64 | | task_tx, [INFO] [stdout] 65 | | task_rx, [INFO] [stdout] 66 | | initiator, [INFO] [stdout] ... | [INFO] [stdout] 69 | | unclaimed_channels, [INFO] [stdout] 70 | | })) [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: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/multiplexer.rs:199:12 [INFO] [stdout] | [INFO] [stdout] 192 | fn deserialize(deserializer: D) -> Result [INFO] [stdout] | --------------- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 199 | Ok(ChannelHandle { [INFO] [stdout] | ____________^ [INFO] [stdout] 200 | | marker: Default::default(), [INFO] [stdout] 201 | | chan_id, [INFO] [stdout] 202 | | multiplexer: CURRENT_MULTIPLEXER.with(|refcell| refcell.borrow().clone()), [INFO] [stdout] 203 | | }) [INFO] [stdout] | | ^ these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] | |_________| [INFO] [stdout] | [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [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/multiplexer.rs:202:61 [INFO] [stdout] | [INFO] [stdout] 202 | multiplexer: CURRENT_MULTIPLEXER.with(|refcell| refcell.borrow().clone()), [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 3 previous errors; 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `bare_cnr` (lib) due to 4 previous errors; 2 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "d129b2d50afa2696d9ae8716bbe65810b8cf6b8fe7f403bfdea759740c9598d9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d129b2d50afa2696d9ae8716bbe65810b8cf6b8fe7f403bfdea759740c9598d9", kill_on_drop: false }` [INFO] [stdout] d129b2d50afa2696d9ae8716bbe65810b8cf6b8fe7f403bfdea759740c9598d9