[INFO] fetching crate ringbuffer-spsc 0.1.9... [INFO] checking ringbuffer-spsc-0.1.9 against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu [INFO] extracting crate ringbuffer-spsc 0.1.9 into /workspace/builds/worker-3-tc1/source [INFO] validating manifest of crates.io crate ringbuffer-spsc 0.1.9 on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate ringbuffer-spsc 0.1.9 [INFO] finished tweaking crates.io crate ringbuffer-spsc 0.1.9 [INFO] tweaked toml for crates.io crate ringbuffer-spsc 0.1.9 written to /workspace/builds/worker-3-tc1/source/Cargo.toml [INFO] crate crates.io crate ringbuffer-spsc 0.1.9 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] ff461d3db375b532f6c09046ece27ef0be70d1351ff806ebd8744b98a4b4ac68 [INFO] running `Command { std: "docker" "start" "-a" "ff461d3db375b532f6c09046ece27ef0be70d1351ff806ebd8744b98a4b4ac68", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ff461d3db375b532f6c09046ece27ef0be70d1351ff806ebd8744b98a4b4ac68", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ff461d3db375b532f6c09046ece27ef0be70d1351ff806ebd8744b98a4b4ac68", kill_on_drop: false }` [INFO] [stdout] ff461d3db375b532f6c09046ece27ef0be70d1351ff806ebd8744b98a4b4ac68 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "-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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 8ad9eb02f04505b55976ab9d53a65e981208bfeee24a60f070f8c0e547c21a7c [INFO] running `Command { std: "docker" "start" "-a" "8ad9eb02f04505b55976ab9d53a65e981208bfeee24a60f070f8c0e547c21a7c", kill_on_drop: false }` [INFO] [stderr] Checking cache-padded v1.2.0 [INFO] [stderr] Checking array-init v2.1.0 [INFO] [stderr] Checking ringbuffer-spsc v0.1.9 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused return value of `core::mem::replace` that must be used [INFO] [stdout] --> src/lib.rs:138:18 [INFO] [stdout] | [INFO] [stdout] 138 | unsafe { mem::replace(self.inner.get_mut(self.local_idx_w), MaybeUninit::new(t)) }; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 138 | unsafe { let _ = mem::replace(self.inner.get_mut(self.local_idx_w), MaybeUninit::new(t)); }; [INFO] [stdout] | +++++++ + [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `core::mem::replace` that must be used [INFO] [stdout] --> src/lib.rs:138:18 [INFO] [stdout] | [INFO] [stdout] 138 | unsafe { mem::replace(self.inner.get_mut(self.local_idx_w), MaybeUninit::new(t)) }; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 138 | unsafe { let _ = mem::replace(self.inner.get_mut(self.local_idx_w), MaybeUninit::new(t)); }; [INFO] [stdout] | +++++++ + [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.14s [INFO] running `Command { std: "docker" "inspect" "8ad9eb02f04505b55976ab9d53a65e981208bfeee24a60f070f8c0e547c21a7c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8ad9eb02f04505b55976ab9d53a65e981208bfeee24a60f070f8c0e547c21a7c", kill_on_drop: false }` [INFO] [stdout] 8ad9eb02f04505b55976ab9d53a65e981208bfeee24a60f070f8c0e547c21a7c [INFO] checking ringbuffer-spsc-0.1.9 against try#f9935d29d867449445ee008640ccca1bf1ae0889+rustflags=-Dtail_expr_drop_order for crater-rollup-uwu [INFO] extracting crate ringbuffer-spsc 0.1.9 into /workspace/builds/worker-3-tc2/source [INFO] validating manifest of crates.io crate ringbuffer-spsc 0.1.9 on toolchain f9935d29d867449445ee008640ccca1bf1ae0889 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f9935d29d867449445ee008640ccca1bf1ae0889" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate ringbuffer-spsc 0.1.9 [INFO] finished tweaking crates.io crate ringbuffer-spsc 0.1.9 [INFO] tweaked toml for crates.io crate ringbuffer-spsc 0.1.9 written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] crate crates.io crate ringbuffer-spsc 0.1.9 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" "+f9935d29d867449445ee008640ccca1bf1ae0889" "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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+f9935d29d867449445ee008640ccca1bf1ae0889" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] ce9c9880b3eb4c634daa899362ea56819290ed3af03b0a6286b4abacbef41cd0 [INFO] running `Command { std: "docker" "start" "-a" "ce9c9880b3eb4c634daa899362ea56819290ed3af03b0a6286b4abacbef41cd0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ce9c9880b3eb4c634daa899362ea56819290ed3af03b0a6286b4abacbef41cd0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ce9c9880b3eb4c634daa899362ea56819290ed3af03b0a6286b4abacbef41cd0", kill_on_drop: false }` [INFO] [stdout] ce9c9880b3eb4c634daa899362ea56819290ed3af03b0a6286b4abacbef41cd0 [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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+f9935d29d867449445ee008640ccca1bf1ae0889" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 9839b1980dfb97096cc50e2d8738cf184a4b8f8ce8d7ecf788ada01487f2b8de [INFO] running `Command { std: "docker" "start" "-a" "9839b1980dfb97096cc50e2d8738cf184a4b8f8ce8d7ecf788ada01487f2b8de", kill_on_drop: false }` [INFO] [stderr] Checking cache-padded v1.2.0 [INFO] [stderr] Checking array-init v2.1.0 [INFO] [stderr] Checking ringbuffer-spsc v0.1.9 (/opt/rustwide/workdir) [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:77:13 [INFO] [stdout] | [INFO] [stdout] 71 | let rb = Arc::new(RingBuffer { [INFO] [stdout] | -- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 77 | / RingBufferWriter { [INFO] [stdout] 78 | | inner: rb.clone(), [INFO] [stdout] 79 | | cached_idx_r: 0, [INFO] [stdout] 80 | | local_idx_w: 0, [INFO] [stdout] 81 | | }, [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/lib.rs:82:13 [INFO] [stdout] | [INFO] [stdout] 71 | let rb = Arc::new(RingBuffer { [INFO] [stdout] | -- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 82 | / RingBufferReader { [INFO] [stdout] 83 | | inner: rb, [INFO] [stdout] 84 | | local_idx_r: 0, [INFO] [stdout] 85 | | cached_idx_w: 0, [INFO] [stdout] 86 | | }, [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/lib.rs:77:13 [INFO] [stdout] | [INFO] [stdout] 71 | let rb = Arc::new(RingBuffer { [INFO] [stdout] | -- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 77 | / RingBufferWriter { [INFO] [stdout] 78 | | inner: rb.clone(), [INFO] [stdout] 79 | | cached_idx_r: 0, [INFO] [stdout] 80 | | local_idx_w: 0, [INFO] [stdout] 81 | | }, [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/lib.rs:82:13 [INFO] [stdout] | [INFO] [stdout] 71 | let rb = Arc::new(RingBuffer { [INFO] [stdout] | -- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 82 | / RingBufferReader { [INFO] [stdout] 83 | | inner: rb, [INFO] [stdout] 84 | | local_idx_r: 0, [INFO] [stdout] 85 | | cached_idx_w: 0, [INFO] [stdout] 86 | | }, [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: unused return value of `core::mem::replace` that must be used [INFO] [stdout] --> src/lib.rs:138:18 [INFO] [stdout] | [INFO] [stdout] 138 | unsafe { mem::replace(self.inner.get_mut(self.local_idx_w), MaybeUninit::new(t)) }; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 138 | unsafe { let _ = mem::replace(self.inner.get_mut(self.local_idx_w), MaybeUninit::new(t)); }; [INFO] [stdout] | +++++++ + [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 2 previous errors; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `core::mem::replace` that must be used [INFO] [stdout] --> src/lib.rs:138:18 [INFO] [stdout] | [INFO] [stdout] 138 | unsafe { mem::replace(self.inner.get_mut(self.local_idx_w), MaybeUninit::new(t)) }; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 138 | unsafe { let _ = mem::replace(self.inner.get_mut(self.local_idx_w), MaybeUninit::new(t)); }; [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 `ringbuffer-spsc` (lib) due to 3 previous errors; 1 warning emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: could not compile `ringbuffer-spsc` (lib test) due to 3 previous errors; 1 warning emitted [INFO] running `Command { std: "docker" "inspect" "9839b1980dfb97096cc50e2d8738cf184a4b8f8ce8d7ecf788ada01487f2b8de", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9839b1980dfb97096cc50e2d8738cf184a4b8f8ce8d7ecf788ada01487f2b8de", kill_on_drop: false }` [INFO] [stdout] 9839b1980dfb97096cc50e2d8738cf184a4b8f8ce8d7ecf788ada01487f2b8de