[INFO] fetching crate polonius-the-crab 0.4.1... [INFO] checking polonius-the-crab-0.4.1 against try#4d98531622e1718ae0bc3c7a1ab9cd8938428452+rustflags=-Dtail_expr_drop_order for pr-129604 [INFO] extracting crate polonius-the-crab 0.4.1 into /workspace/builds/worker-4-tc2/source [INFO] validating manifest of crates.io crate polonius-the-crab 0.4.1 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] removed /workspace/builds/worker-4-tc2/source/.cargo/config [INFO] removed /workspace/builds/worker-4-tc2/source/rust-toolchain.toml [INFO] started tweaking crates.io crate polonius-the-crab 0.4.1 [INFO] finished tweaking crates.io crate polonius-the-crab 0.4.1 [INFO] tweaked toml for crates.io crate polonius-the-crab 0.4.1 written to /workspace/builds/worker-4-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 3 packages to latest compatible versions [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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] ebf2dfa6410c4c9d933f2ff5f4e7d3f5a5dfe76283c06010d11a725355c88814 [INFO] running `Command { std: "docker" "start" "-a" "ebf2dfa6410c4c9d933f2ff5f4e7d3f5a5dfe76283c06010d11a725355c88814", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ebf2dfa6410c4c9d933f2ff5f4e7d3f5a5dfe76283c06010d11a725355c88814", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ebf2dfa6410c4c9d933f2ff5f4e7d3f5a5dfe76283c06010d11a725355c88814", kill_on_drop: false }` [INFO] [stdout] ebf2dfa6410c4c9d933f2ff5f4e7d3f5a5dfe76283c06010d11a725355c88814 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] d6b8010f8d43c7efd0d26137be439b4b59bae2f47decb6aa89a4c597103e63ef [INFO] running `Command { std: "docker" "start" "-a" "d6b8010f8d43c7efd0d26137be439b4b59bae2f47decb6aa89a4c597103e63ef", kill_on_drop: false }` [INFO] [stderr] Checking never-say-never v6.6.666 [INFO] [stderr] Checking higher-kinded-types v0.1.1 [INFO] [stderr] Checking polonius-the-crab v0.4.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: unreachable pattern [INFO] [stdout] --> src/macros.rs:120:13 [INFO] [stdout] | [INFO] [stdout] 120 | | Self::Break(unreachable) => match unreachable {}, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ matches no values because `cannot_use__polonius_break_dependentǃ__without_a_break_type_annotation_on__polonius_loopǃ` is uninhabited [INFO] [stdout] | [INFO] [stdout] = note: to learn more about uninhabited types, see https://doc.rust-lang.org/nomicon/exotic-sizes.html#empty-types [INFO] [stdout] = note: `#[warn(unreachable_patterns)]` 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/lib.rs:134:11 [INFO] [stdout] | [INFO] [stdout] 107 | / branch: [INFO] [stdout] 108 | | impl for<'any> [INFO] [stdout] 109 | | FnOnce(&'any mut Input) [INFO] [stdout] 110 | | -> PoloniusResult< [INFO] [stdout] 111 | | BorrowingOutput::Of<'any>, [INFO] [stdout] 112 | | OwnedOutput, [INFO] [stdout] 113 | | > [INFO] [stdout] | |_________________- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 134 | match branch(tentative_borrow) { [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/try.rs:32:30 [INFO] [stdout] | [INFO] [stdout] 32 | this.map_err(|e| Err(e.into())) [INFO] [stdout] | - ^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | these values have significant drop implementation and will observe changes in drop order under Edition 2024 [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 2 previous errors; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `polonius-the-crab` (lib) due to 3 previous errors; 1 warning emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: unreachable pattern [INFO] [stdout] --> src/macros.rs:120:13 [INFO] [stdout] | [INFO] [stdout] 120 | | Self::Break(unreachable) => match unreachable {}, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ matches no values because `cannot_use__polonius_break_dependentǃ__without_a_break_type_annotation_on__polonius_loopǃ` is uninhabited [INFO] [stdout] | [INFO] [stdout] = note: to learn more about uninhabited types, see https://doc.rust-lang.org/nomicon/exotic-sizes.html#empty-types [INFO] [stdout] = note: `#[warn(unreachable_patterns)]` 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/lib.rs:134:11 [INFO] [stdout] | [INFO] [stdout] 107 | / branch: [INFO] [stdout] 108 | | impl for<'any> [INFO] [stdout] 109 | | FnOnce(&'any mut Input) [INFO] [stdout] 110 | | -> PoloniusResult< [INFO] [stdout] 111 | | BorrowingOutput::Of<'any>, [INFO] [stdout] 112 | | OwnedOutput, [INFO] [stdout] 113 | | > [INFO] [stdout] | |_________________- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 134 | match branch(tentative_borrow) { [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/try.rs:32:30 [INFO] [stdout] | [INFO] [stdout] 32 | this.map_err(|e| Err(e.into())) [INFO] [stdout] | - ^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | these values have significant drop implementation and will observe changes in drop order under Edition 2024 [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 2 previous errors; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `polonius-the-crab` (lib test) due to 3 previous errors; 1 warning emitted [INFO] running `Command { std: "docker" "inspect" "d6b8010f8d43c7efd0d26137be439b4b59bae2f47decb6aa89a4c597103e63ef", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d6b8010f8d43c7efd0d26137be439b4b59bae2f47decb6aa89a4c597103e63ef", kill_on_drop: false }` [INFO] [stdout] d6b8010f8d43c7efd0d26137be439b4b59bae2f47decb6aa89a4c597103e63ef