[INFO] fetching crate trait-async 0.1.24... [INFO] checking trait-async-0.1.24 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930 [INFO] extracting crate trait-async 0.1.24 into /workspace/builds/worker-3-tc2/source [INFO] validating manifest of crates.io crate trait-async 0.1.24 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 trait-async 0.1.24 [INFO] finished tweaking crates.io crate trait-async 0.1.24 [INFO] tweaked toml for crates.io crate trait-async 0.1.24 written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 35 packages to latest compatible versions [INFO] [stderr] Adding syn v1.0.109 (available: v2.0.79) [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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] f7772e8d8587bd8dc40f16f5cab9fa15defedb97931ee61042182d7743b853ab [INFO] running `Command { std: "docker" "start" "-a" "f7772e8d8587bd8dc40f16f5cab9fa15defedb97931ee61042182d7743b853ab", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "f7772e8d8587bd8dc40f16f5cab9fa15defedb97931ee61042182d7743b853ab", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f7772e8d8587bd8dc40f16f5cab9fa15defedb97931ee61042182d7743b853ab", kill_on_drop: false }` [INFO] [stdout] f7772e8d8587bd8dc40f16f5cab9fa15defedb97931ee61042182d7743b853ab [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] c5610972debb67a23fe991f434a4c2db98f280efbaabb49d2e7e00f4a4c195cd [INFO] running `Command { std: "docker" "start" "-a" "c5610972debb67a23fe991f434a4c2db98f280efbaabb49d2e7e00f4a4c195cd", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.86 [INFO] [stderr] Compiling serde v1.0.210 [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Checking unicode-ident v1.0.13 [INFO] [stderr] Checking equivalent v1.0.1 [INFO] [stderr] Checking hashbrown v0.14.5 [INFO] [stderr] Compiling serde_json v1.0.128 [INFO] [stderr] Checking winnow v0.6.20 [INFO] [stderr] Checking itoa v1.0.11 [INFO] [stderr] Checking ryu v1.0.18 [INFO] [stderr] Compiling rustversion v1.0.17 [INFO] [stderr] Compiling trybuild v1.0.99 [INFO] [stderr] Checking dissimilar v1.0.9 [INFO] [stderr] Checking termcolor v1.4.1 [INFO] [stderr] Checking glob v0.3.1 [INFO] [stderr] Compiling quote v1.0.37 [INFO] [stderr] Compiling syn v2.0.79 [INFO] [stderr] Checking indexmap v2.5.0 [INFO] [stderr] Compiling serde_derive v1.0.210 [INFO] [stderr] Checking toml_datetime v0.6.8 [INFO] [stderr] Checking serde_spanned v0.6.8 [INFO] [stderr] Checking toml_edit v0.22.22 [INFO] [stderr] Checking trait-async v0.1.24 (/opt/rustwide/workdir) [INFO] [stderr] Checking toml v0.8.19 [INFO] [stdout] warning: unexpected `cfg` condition name: `trait_async_nightly_testing` [INFO] [stdout] --> tests/test.rs:1:13 [INFO] [stdout] | [INFO] [stdout] 1 | #![cfg_attr(trait_async_nightly_testing, feature(specialization, const_generics))] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: expected names are: `clippy`, `debug_assertions`, `doc`, `docsrs`, `doctest`, `feature`, `fmt_debug`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `rustfmt`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `ub_checks`, `unix`, and `windows` [INFO] [stdout] = help: consider using a Cargo feature instead [INFO] [stdout] = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint: [INFO] [stdout] [lints.rust] [INFO] [stdout] unexpected_cfgs = { level = "warn", check-cfg = ['cfg(trait_async_nightly_testing)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(trait_async_nightly_testing)");` to the top of the `build.rs` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] = note: `#[warn(unexpected_cfgs)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unexpected `cfg` condition name: `trait_async_nightly_testing` [INFO] [stdout] --> tests/test.rs:275:7 [INFO] [stdout] | [INFO] [stdout] 275 | #[cfg(trait_async_nightly_testing)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: consider using a Cargo feature instead [INFO] [stdout] = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint: [INFO] [stdout] [lints.rust] [INFO] [stdout] unexpected_cfgs = { level = "warn", check-cfg = ['cfg(trait_async_nightly_testing)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(trait_async_nightly_testing)");` to the top of the `build.rs` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unexpected `cfg` condition name: `trait_async_nightly_testing` [INFO] [stdout] --> tests/test.rs:482:7 [INFO] [stdout] | [INFO] [stdout] 482 | #[cfg(trait_async_nightly_testing)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: consider using a Cargo feature instead [INFO] [stdout] = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint: [INFO] [stdout] [lints.rust] [INFO] [stdout] unexpected_cfgs = { level = "warn", check-cfg = ['cfg(trait_async_nightly_testing)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(trait_async_nightly_testing)");` to the top of the `build.rs` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this value of type `Poll<::Output>` has significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> tests/executor/mod.rs:31:11 [INFO] [stdout] | [INFO] [stdout] 7 | pub fn block_on_simple(mut fut: F) -> F::Output { [INFO] [stdout] | ------- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 25 | let waker = unsafe { Waker::from_raw(raw_waker) }; [INFO] [stdout] | ----- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 31 | match fut.poll(&mut cx) { [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: trait `UnsafeTraitPubCrate` is never used [INFO] [stdout] --> tests/test.rs:146:25 [INFO] [stdout] | [INFO] [stdout] 146 | pub(crate) unsafe trait UnsafeTraitPubCrate {} [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `UnsafeTraitPrivate` is never used [INFO] [stdout] --> tests/test.rs:149:14 [INFO] [stdout] | [INFO] [stdout] 149 | unsafe trait UnsafeTraitPrivate {} [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `Issue1` is never used [INFO] [stdout] --> tests/test.rs:156:11 [INFO] [stdout] | [INFO] [stdout] 156 | trait Issue1 { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `Issue11` is never used [INFO] [stdout] --> tests/test.rs:200:11 [INFO] [stdout] | [INFO] [stdout] 200 | trait Issue11 { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Struct` is never constructed [INFO] [stdout] --> tests/test.rs:204:12 [INFO] [stdout] | [INFO] [stdout] 204 | struct Struct; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `Trait` is never used [INFO] [stdout] --> tests/test.rs:217:11 [INFO] [stdout] | [INFO] [stdout] 217 | trait Trait {} [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `Issue15` is never used [INFO] [stdout] --> tests/test.rs:220:11 [INFO] [stdout] | [INFO] [stdout] 220 | trait Issue15 { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `Issue17` is never used [INFO] [stdout] --> tests/test.rs:230:11 [INFO] [stdout] | [INFO] [stdout] 230 | trait Issue17 { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Struct` is never constructed [INFO] [stdout] --> tests/test.rs:234:12 [INFO] [stdout] | [INFO] [stdout] 234 | struct Struct { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `S` is never constructed [INFO] [stdout] --> tests/test.rs:262:12 [INFO] [stdout] | [INFO] [stdout] 262 | struct S {} [INFO] [stdout] | ^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Str` is never constructed [INFO] [stdout] --> tests/test.rs:325:12 [INFO] [stdout] | [INFO] [stdout] 325 | struct Str<'a>(&'a str); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `Trait1` is never used [INFO] [stdout] --> tests/test.rs:328:11 [INFO] [stdout] | [INFO] [stdout] 328 | trait Trait1<'a> { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `Trait2` is never used [INFO] [stdout] --> tests/test.rs:343:11 [INFO] [stdout] | [INFO] [stdout] 343 | trait Trait2 { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `Trait3` is never used [INFO] [stdout] --> tests/test.rs:353:11 [INFO] [stdout] | [INFO] [stdout] 353 | trait Trait3<'a, 'b> { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> tests/test.rs:442:22 [INFO] [stdout] | [INFO] [stdout] 442 | pub struct Tuple(u8); [INFO] [stdout] | ----- ^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing this field [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error; 18 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `trait-async` (test "test") due to 2 previous errors; 18 warnings emitted [INFO] running `Command { std: "docker" "inspect" "c5610972debb67a23fe991f434a4c2db98f280efbaabb49d2e7e00f4a4c195cd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c5610972debb67a23fe991f434a4c2db98f280efbaabb49d2e7e00f4a4c195cd", kill_on_drop: false }` [INFO] [stdout] c5610972debb67a23fe991f434a4c2db98f280efbaabb49d2e7e00f4a4c195cd