[INFO] fetching crate toy_arena 0.2.0... [INFO] checking toy_arena-0.2.0 against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu [INFO] extracting crate toy_arena 0.2.0 into /workspace/builds/worker-7-tc1/source [INFO] validating manifest of crates.io crate toy_arena 0.2.0 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 toy_arena 0.2.0 [INFO] finished tweaking crates.io crate toy_arena 0.2.0 [INFO] tweaked toml for crates.io crate toy_arena 0.2.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 6 packages to latest compatible versions [INFO] [stderr] Adding syn v1.0.109 (latest: v2.0.76) [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] [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-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] ac34af2e2f427207d1b2e425e05fe5bb010a69550022b31b50450c570335b85c [INFO] running `Command { std: "docker" "start" "-a" "ac34af2e2f427207d1b2e425e05fe5bb010a69550022b31b50450c570335b85c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ac34af2e2f427207d1b2e425e05fe5bb010a69550022b31b50450c570335b85c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ac34af2e2f427207d1b2e425e05fe5bb010a69550022b31b50450c570335b85c", kill_on_drop: false }` [INFO] [stdout] ac34af2e2f427207d1b2e425e05fe5bb010a69550022b31b50450c570335b85c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] bc7b72ba16ef3767f8c019c38411b5cf9cf0fbec2174a0d89acba81f34478324 [INFO] running `Command { std: "docker" "start" "-a" "bc7b72ba16ef3767f8c019c38411b5cf9cf0fbec2174a0d89acba81f34478324", kill_on_drop: false }` [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Compiling derivative v2.2.0 [INFO] [stderr] Checking toy_arena v0.2.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:340:13 [INFO] [stdout] | [INFO] [stdout] 340 | let mut slot_states = self.slot_states.get_mut(); [INFO] [stdout] | ----^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `set_parent` is never used [INFO] [stdout] --> src/tree/link.rs:49:12 [INFO] [stdout] | [INFO] [stdout] 37 | impl Link { [INFO] [stdout] | --------- method in this implementation [INFO] [stdout] ... [INFO] [stdout] 49 | pub fn set_parent(&mut self, parent: Option) { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stdout] --> src/lib.rs:428:13 [INFO] [stdout] | [INFO] [stdout] 428 | drop(slot_states); [INFO] [stdout] | ^^^^^-----------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&mut SlotStates` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dropping_references)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 428 - drop(slot_states); [INFO] [stdout] 428 + let _ = slot_states; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:340:13 [INFO] [stdout] | [INFO] [stdout] 340 | let mut slot_states = self.slot_states.get_mut(); [INFO] [stdout] | ----^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `set_parent` is never used [INFO] [stdout] --> src/tree/link.rs:49:12 [INFO] [stdout] | [INFO] [stdout] 37 | impl Link { [INFO] [stdout] | --------- method in this implementation [INFO] [stdout] ... [INFO] [stdout] 49 | pub fn set_parent(&mut self, parent: Option) { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stdout] --> src/lib.rs:428:13 [INFO] [stdout] | [INFO] [stdout] 428 | drop(slot_states); [INFO] [stdout] | ^^^^^-----------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&mut SlotStates` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dropping_references)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 428 - drop(slot_states); [INFO] [stdout] 428 + let _ = slot_states; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.32s [INFO] running `Command { std: "docker" "inspect" "bc7b72ba16ef3767f8c019c38411b5cf9cf0fbec2174a0d89acba81f34478324", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "bc7b72ba16ef3767f8c019c38411b5cf9cf0fbec2174a0d89acba81f34478324", kill_on_drop: false }` [INFO] [stdout] bc7b72ba16ef3767f8c019c38411b5cf9cf0fbec2174a0d89acba81f34478324 [INFO] checking toy_arena-0.2.0 against try#f9935d29d867449445ee008640ccca1bf1ae0889+rustflags=-Dtail_expr_drop_order for crater-rollup-uwu [INFO] extracting crate toy_arena 0.2.0 into /workspace/builds/worker-7-tc2/source [INFO] validating manifest of crates.io crate toy_arena 0.2.0 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 toy_arena 0.2.0 [INFO] finished tweaking crates.io crate toy_arena 0.2.0 [INFO] tweaked toml for crates.io crate toy_arena 0.2.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f9935d29d867449445ee008640ccca1bf1ae0889" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 6 packages to latest compatible versions [INFO] [stderr] Adding syn v1.0.109 (latest: v2.0.76) [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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] beb9977caab8ef8ee23336cc853f0e8aff8abdb078871d8f8b1b586d754a2f2c [INFO] running `Command { std: "docker" "start" "-a" "beb9977caab8ef8ee23336cc853f0e8aff8abdb078871d8f8b1b586d754a2f2c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "beb9977caab8ef8ee23336cc853f0e8aff8abdb078871d8f8b1b586d754a2f2c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "beb9977caab8ef8ee23336cc853f0e8aff8abdb078871d8f8b1b586d754a2f2c", kill_on_drop: false }` [INFO] [stdout] beb9977caab8ef8ee23336cc853f0e8aff8abdb078871d8f8b1b586d754a2f2c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] cc8c11acee0846f4fa1c0c60430c3e5e3ea695c21e864ebf90aa249c5c732625 [INFO] running `Command { std: "docker" "start" "-a" "cc8c11acee0846f4fa1c0c60430c3e5e3ea695c21e864ebf90aa249c5c732625", kill_on_drop: false }` [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Compiling derivative v2.2.0 [INFO] [stderr] Checking toy_arena v0.2.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:340:13 [INFO] [stdout] | [INFO] [stdout] 340 | let mut slot_states = self.slot_states.get_mut(); [INFO] [stdout] | ----^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `set_parent` is never used [INFO] [stdout] --> src/tree/link.rs:49:12 [INFO] [stdout] | [INFO] [stdout] 37 | impl Link { [INFO] [stdout] | --------- method in this implementation [INFO] [stdout] ... [INFO] [stdout] 49 | pub fn set_parent(&mut self, parent: Option) { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stdout] --> src/lib.rs:428:13 [INFO] [stdout] | [INFO] [stdout] 428 | drop(slot_states); [INFO] [stdout] | ^^^^^-----------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&mut SlotStates` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dropping_references)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 428 - drop(slot_states); [INFO] [stdout] 428 + let _ = slot_states; [INFO] [stdout] | [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/tree/iter_mut.rs:44:20 [INFO] [stdout] | [INFO] [stdout] 40 | let mut tree = Tree::new(); [INFO] [stdout] | ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 44 | inner: Rc::new(TreeBindDrop { [INFO] [stdout] | ____________________^ [INFO] [stdout] 45 | | original, [INFO] [stdout] 46 | | tree: UnsafeCell::new(tree), [INFO] [stdout] 47 | | }), [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; 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:340:13 [INFO] [stdout] | [INFO] [stdout] 340 | let mut slot_states = self.slot_states.get_mut(); [INFO] [stdout] | ----^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `toy_arena` (lib) due to 2 previous errors; 3 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: method `set_parent` is never used [INFO] [stdout] --> src/tree/link.rs:49:12 [INFO] [stdout] | [INFO] [stdout] 37 | impl Link { [INFO] [stdout] | --------- method in this implementation [INFO] [stdout] ... [INFO] [stdout] 49 | pub fn set_parent(&mut self, parent: Option) { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stdout] --> src/lib.rs:428:13 [INFO] [stdout] | [INFO] [stdout] 428 | drop(slot_states); [INFO] [stdout] | ^^^^^-----------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&mut SlotStates` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dropping_references)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 428 - drop(slot_states); [INFO] [stdout] 428 + let _ = slot_states; [INFO] [stdout] | [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/tree/iter_mut.rs:44:20 [INFO] [stdout] | [INFO] [stdout] 40 | let mut tree = Tree::new(); [INFO] [stdout] | ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 44 | inner: Rc::new(TreeBindDrop { [INFO] [stdout] | ____________________^ [INFO] [stdout] 45 | | original, [INFO] [stdout] 46 | | tree: UnsafeCell::new(tree), [INFO] [stdout] 47 | | }), [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; 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `toy_arena` (lib test) due to 2 previous errors; 3 warnings emitted [INFO] running `Command { std: "docker" "inspect" "cc8c11acee0846f4fa1c0c60430c3e5e3ea695c21e864ebf90aa249c5c732625", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "cc8c11acee0846f4fa1c0c60430c3e5e3ea695c21e864ebf90aa249c5c732625", kill_on_drop: false }` [INFO] [stdout] cc8c11acee0846f4fa1c0c60430c3e5e3ea695c21e864ebf90aa249c5c732625