[INFO] fetching crate task-group 0.2.2... [INFO] checking task-group-0.2.2 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930 [INFO] extracting crate task-group 0.2.2 into /workspace/builds/worker-6-tc2/source [INFO] validating manifest of crates.io crate task-group 0.2.2 on toolchain c387b04bf028733cd561d62128c8a5eee4bc1458 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate task-group 0.2.2 [INFO] finished tweaking crates.io crate task-group 0.2.2 [INFO] tweaked toml for crates.io crate task-group 0.2.2 written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] crate crates.io crate task-group 0.2.2 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" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 35ea55fdcfa58005d505f9ae4ddd7a3de910ef8c70e39b76992627f31d200c7a [INFO] running `Command { std: "docker" "start" "-a" "35ea55fdcfa58005d505f9ae4ddd7a3de910ef8c70e39b76992627f31d200c7a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "35ea55fdcfa58005d505f9ae4ddd7a3de910ef8c70e39b76992627f31d200c7a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "35ea55fdcfa58005d505f9ae4ddd7a3de910ef8c70e39b76992627f31d200c7a", kill_on_drop: false }` [INFO] [stdout] 35ea55fdcfa58005d505f9ae4ddd7a3de910ef8c70e39b76992627f31d200c7a [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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 402d84b93144bb169583282eca77cc271465e63ce1e155cf28d870d762c89a0e [INFO] running `Command { std: "docker" "start" "-a" "402d84b93144bb169583282eca77cc271465e63ce1e155cf28d870d762c89a0e", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.91 [INFO] [stderr] Compiling proc-macro2 v1.0.24 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Compiling syn v1.0.67 [INFO] [stderr] Checking smallvec v1.6.1 [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Compiling memchr v2.3.4 [INFO] [stderr] Checking pin-project-lite v0.2.6 [INFO] [stderr] Checking bytes v1.0.1 [INFO] [stderr] Checking once_cell v1.7.2 [INFO] [stderr] Compiling anyhow v1.0.40 [INFO] [stderr] Checking instant v0.1.9 [INFO] [stderr] Checking lock_api v0.4.2 [INFO] [stderr] Compiling tokio v1.4.0 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Checking parking_lot_core v0.8.3 [INFO] [stderr] Checking mio v0.7.11 [INFO] [stderr] Checking signal-hook-registry v1.3.0 [INFO] [stderr] Checking num_cpus v1.13.0 [INFO] [stderr] Checking parking_lot v0.11.1 [INFO] [stderr] Compiling tokio-macros v1.1.0 [INFO] [stderr] Checking task-group v0.2.2 (/opt/rustwide/workdir) [INFO] [stdout] error: this value of type `RuntimeError` has significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/lib.rs:430:15 [INFO] [stdout] | [INFO] [stdout] 423 | let (tg, tm): (TaskGroup, TaskManager<_>) = TaskGroup::new(); [INFO] [stdout] | -- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 430 | match res.err().unwrap() { [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: this value of type `RuntimeError` has significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/lib.rs:452:15 [INFO] [stdout] | [INFO] [stdout] 441 | let (tg, tm): (TaskGroup, TaskManager<_>) = TaskGroup::new(); [INFO] [stdout] | -- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 452 | match res.err().unwrap() { [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] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing [INFO] [stdout] --> src/lib.rs:566:13 [INFO] [stdout] | [INFO] [stdout] 566 | drop(big_object); [INFO] [stdout] | ^^^^^----------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `[u8; 4096]` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dropping_copy_types)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 566 - drop(big_object); [INFO] [stdout] 566 + let _ = big_object; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 2 previous errors; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `task-group` (lib test) due to 3 previous errors; 1 warning emitted [INFO] running `Command { std: "docker" "inspect" "402d84b93144bb169583282eca77cc271465e63ce1e155cf28d870d762c89a0e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "402d84b93144bb169583282eca77cc271465e63ce1e155cf28d870d762c89a0e", kill_on_drop: false }` [INFO] [stdout] 402d84b93144bb169583282eca77cc271465e63ce1e155cf28d870d762c89a0e