[INFO] fetching crate futures-core-preview 0.3.0-alpha.19... [INFO] checking futures-core-preview-0.3.0-alpha.19 against try#4d98531622e1718ae0bc3c7a1ab9cd8938428452+rustflags=-Dtail_expr_drop_order for pr-129604 [INFO] extracting crate futures-core-preview 0.3.0-alpha.19 into /workspace/builds/worker-5-tc2/source [INFO] validating manifest of crates.io crate futures-core-preview 0.3.0-alpha.19 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 futures-core-preview 0.3.0-alpha.19 [INFO] finished tweaking crates.io crate futures-core-preview 0.3.0-alpha.19 [INFO] tweaked toml for crates.io crate futures-core-preview 0.3.0-alpha.19 written to /workspace/builds/worker-5-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] 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] b9eb25010b4a4eb3a6604b6f9f54d4863b7b79651c07afa66654663e52a4fda3 [INFO] running `Command { std: "docker" "start" "-a" "b9eb25010b4a4eb3a6604b6f9f54d4863b7b79651c07afa66654663e52a4fda3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "b9eb25010b4a4eb3a6604b6f9f54d4863b7b79651c07afa66654663e52a4fda3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b9eb25010b4a4eb3a6604b6f9f54d4863b7b79651c07afa66654663e52a4fda3", kill_on_drop: false }` [INFO] [stdout] b9eb25010b4a4eb3a6604b6f9f54d4863b7b79651c07afa66654663e52a4fda3 [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] ade79aa7afd7cdd99df1fa019f32581ba82ae6fee1bc2b32439f5874e302c82b [INFO] running `Command { std: "docker" "start" "-a" "ade79aa7afd7cdd99df1fa019f32581ba82ae6fee1bc2b32439f5874e302c82b", kill_on_drop: false }` [INFO] [stderr] Checking futures-core-preview v0.3.0-alpha.19 (/opt/rustwide/workdir) [INFO] [stdout] warning: use of deprecated method `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead [INFO] [stdout] --> src/task/__internal/atomic_waker.rs:262:26 [INFO] [stdout] | [INFO] [stdout] 262 | match self.state.compare_and_swap(WAITING, REGISTERING, Acquire) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated method `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead [INFO] [stdout] --> src/task/__internal/atomic_waker.rs:262:26 [INFO] [stdout] | [INFO] [stdout] 262 | match self.state.compare_and_swap(WAITING, REGISTERING, Acquire) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `AssertSync` is never used [INFO] [stdout] --> src/task/__internal/atomic_waker.rs:202:15 [INFO] [stdout] | [INFO] [stdout] 202 | trait AssertSync: Sync {} [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/future/future_obj.rs:112:19 [INFO] [stdout] | [INFO] [stdout] 111 | pub fn new + Send>(f: F) -> FutureObj<'a, T> { [INFO] [stdout] | ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] 112 | FutureObj(LocalFutureObj::new(f)) [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 `AssertSync` is never used [INFO] [stdout] --> src/task/__internal/atomic_waker.rs:202:15 [INFO] [stdout] | [INFO] [stdout] 202 | trait AssertSync: Sync {} [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/future/future_obj.rs:112:19 [INFO] [stdout] | [INFO] [stdout] 111 | pub fn new + Send>(f: F) -> FutureObj<'a, T> { [INFO] [stdout] | ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] 112 | FutureObj(LocalFutureObj::new(f)) [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; 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error; 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `futures-core-preview` (lib) due to 2 previous errors; 2 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: could not compile `futures-core-preview` (lib test) due to 2 previous errors; 2 warnings emitted [INFO] running `Command { std: "docker" "inspect" "ade79aa7afd7cdd99df1fa019f32581ba82ae6fee1bc2b32439f5874e302c82b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ade79aa7afd7cdd99df1fa019f32581ba82ae6fee1bc2b32439f5874e302c82b", kill_on_drop: false }` [INFO] [stdout] ade79aa7afd7cdd99df1fa019f32581ba82ae6fee1bc2b32439f5874e302c82b