[INFO] fetching crate blunders-engine 0.1.0... [INFO] checking blunders-engine-0.1.0 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930 [INFO] extracting crate blunders-engine 0.1.0 into /workspace/builds/worker-3-tc2/source [INFO] validating manifest of crates.io crate blunders-engine 0.1.0 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 blunders-engine 0.1.0 [INFO] finished tweaking crates.io crate blunders-engine 0.1.0 [INFO] tweaked toml for crates.io crate blunders-engine 0.1.0 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 82 packages to latest compatible versions [INFO] [stderr] Adding bitflags v1.3.2 (available: v2.6.0) [INFO] [stderr] Adding clap v2.34.0 (available: v4.5.18) [INFO] [stderr] Adding criterion v0.3.6 (available: v0.5.1) [INFO] [stderr] Adding criterion-plot v0.4.5 (available: v0.5.0) [INFO] [stderr] Adding half v1.8.3 (available: v2.4.1) [INFO] [stderr] Adding hermit-abi v0.1.19 (available: v0.4.0) [INFO] [stderr] Adding hermit-abi v0.3.9 (available: v0.4.0) [INFO] [stderr] Adding itertools v0.10.5 (available: v0.13.0) [INFO] [stderr] Adding textwrap v0.11.0 (available: v0.16.1) [INFO] [stderr] Adding unicode-width v0.1.14 (available: v0.2.0) [INFO] [stderr] Adding wasi v0.11.0+wasi-snapshot-preview1 (available: v0.13.2+wasi-0.2.1) [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] cc26e3f0164899f2d00943b7ec23134a78cc8765802360a1c4e78f36aa47ae96 [INFO] running `Command { std: "docker" "start" "-a" "cc26e3f0164899f2d00943b7ec23134a78cc8765802360a1c4e78f36aa47ae96", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "cc26e3f0164899f2d00943b7ec23134a78cc8765802360a1c4e78f36aa47ae96", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "cc26e3f0164899f2d00943b7ec23134a78cc8765802360a1c4e78f36aa47ae96", kill_on_drop: false }` [INFO] [stdout] cc26e3f0164899f2d00943b7ec23134a78cc8765802360a1c4e78f36aa47ae96 [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] 87aeb3fcb854cf0437a483327724dacba77c299ad5f88bd26764c23d2cb280eb [INFO] running `Command { std: "docker" "start" "-a" "87aeb3fcb854cf0437a483327724dacba77c299ad5f88bd26764c23d2cb280eb", kill_on_drop: false }` [INFO] [stderr] Checking arrayvec v0.7.6 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking zerocopy v0.7.35 [INFO] [stderr] Checking criterion v0.3.6 [INFO] [stderr] Checking ppv-lite86 v0.2.20 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stderr] Checking blunders-engine v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] error: this value of type `ArrayVec` has significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/search/negamax.rs:603:13 [INFO] [stdout] | [INFO] [stdout] 318 | mut history: History, [INFO] [stdout] | ----------- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 330 | let root_history = history.clone(); [INFO] [stdout] | ------------ these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 342 | let mut metrics = SearchResult::default(); [INFO] [stdout] | ----------- [INFO] [stdout] | | [INFO] [stdout] | these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] | these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 351 | let mut stack: ArrayVec = ArrayVec::new(); [INFO] [stdout] | --------- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 603 | let pv = stack[BASE_IDX].local_pv.clone(); [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: fields `id` and `name` are never read [INFO] [stdout] --> src/threads.rs:34:9 [INFO] [stdout] | [INFO] [stdout] 33 | struct Thread { [INFO] [stdout] | ------ fields in this struct [INFO] [stdout] 34 | pub id: usize, [INFO] [stdout] | ^^ [INFO] [stdout] 35 | pub name: String, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Thread` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `threads` is never read [INFO] [stdout] --> src/threads.rs:96:5 [INFO] [stdout] | [INFO] [stdout] 94 | pub struct ThreadPool { [INFO] [stdout] | ---------- field in this struct [INFO] [stdout] 95 | num_threads: usize, [INFO] [stdout] 96 | threads: Vec, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `ThreadPool` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [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 `blunders-engine` (lib) due to 2 previous errors; 2 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] error: this value of type `ArrayVec` has significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/search/negamax.rs:603:13 [INFO] [stdout] | [INFO] [stdout] 318 | mut history: History, [INFO] [stdout] | ----------- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 330 | let root_history = history.clone(); [INFO] [stdout] | ------------ these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 342 | let mut metrics = SearchResult::default(); [INFO] [stdout] | ----------- [INFO] [stdout] | | [INFO] [stdout] | these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] | these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 351 | let mut stack: ArrayVec = ArrayVec::new(); [INFO] [stdout] | --------- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 603 | let pv = stack[BASE_IDX].local_pv.clone(); [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: fields `id` and `name` are never read [INFO] [stdout] --> src/threads.rs:34:9 [INFO] [stdout] | [INFO] [stdout] 33 | struct Thread { [INFO] [stdout] | ------ fields in this struct [INFO] [stdout] 34 | pub id: usize, [INFO] [stdout] | ^^ [INFO] [stdout] 35 | pub name: String, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Thread` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `threads` is never read [INFO] [stdout] --> src/threads.rs:96:5 [INFO] [stdout] | [INFO] [stdout] 94 | pub struct ThreadPool { [INFO] [stdout] | ---------- field in this struct [INFO] [stdout] 95 | num_threads: usize, [INFO] [stdout] 96 | threads: Vec, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `ThreadPool` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [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 `blunders-engine` (lib test) due to 2 previous errors; 2 warnings emitted [INFO] running `Command { std: "docker" "inspect" "87aeb3fcb854cf0437a483327724dacba77c299ad5f88bd26764c23d2cb280eb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "87aeb3fcb854cf0437a483327724dacba77c299ad5f88bd26764c23d2cb280eb", kill_on_drop: false }` [INFO] [stdout] 87aeb3fcb854cf0437a483327724dacba77c299ad5f88bd26764c23d2cb280eb