[INFO] cloning repository https://github.com/cs-patzer/chess-engine [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cs-patzer/chess-engine" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcs-patzer%2Fchess-engine", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcs-patzer%2Fchess-engine'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] f55ceaefb6635494264fc5e64c3d55c1b13a2889 [INFO] checking cs-patzer/chess-engine/f55ceaefb6635494264fc5e64c3d55c1b13a2889 against try#4d98531622e1718ae0bc3c7a1ab9cd8938428452+rustflags=-Dtail_expr_drop_order for pr-129604 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcs-patzer%2Fchess-engine" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/cs-patzer/chess-engine 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 git repo https://github.com/cs-patzer/chess-engine [INFO] finished tweaking git repo https://github.com/cs-patzer/chess-engine [INFO] tweaked toml for git repo https://github.com/cs-patzer/chess-engine written to /workspace/builds/worker-0-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/cs-patzer/chess-engine 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" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 5e01aea2282af24f67185cddb93d0e39916de2cf024b2d830de756891ef83a72 [INFO] running `Command { std: "docker" "start" "-a" "5e01aea2282af24f67185cddb93d0e39916de2cf024b2d830de756891ef83a72", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "5e01aea2282af24f67185cddb93d0e39916de2cf024b2d830de756891ef83a72", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5e01aea2282af24f67185cddb93d0e39916de2cf024b2d830de756891ef83a72", kill_on_drop: false }` [INFO] [stdout] 5e01aea2282af24f67185cddb93d0e39916de2cf024b2d830de756891ef83a72 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 79b5982d59e7b9ac846c58f4071bd0ef53e85d60641f14d45428640aabd75a77 [INFO] running `Command { std: "docker" "start" "-a" "79b5982d59e7b9ac846c58f4071bd0ef53e85d60641f14d45428640aabd75a77", kill_on_drop: false }` [INFO] [stderr] Checking arrayvec v0.7.4 [INFO] [stderr] Checking ladybug v0.5.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: value assigned to `nps` is never read [INFO] [stdout] --> src/search/negamax.rs:36:21 [INFO] [stdout] | [INFO] [stdout] 36 | let mut nps: u128 = 0; [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `state` is never read [INFO] [stdout] --> src/ladybug.rs:16:5 [INFO] [stdout] | [INFO] [stdout] 12 | pub struct Ladybug { [INFO] [stdout] | ------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 16 | state: State, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `Busy` is never constructed [INFO] [stdout] --> src/ladybug.rs:42:5 [INFO] [stdout] | [INFO] [stdout] 40 | enum State { [INFO] [stdout] | ----- variant in this enum [INFO] [stdout] 41 | Idle, [INFO] [stdout] 42 | Busy, [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/ladybug.rs:59:19 [INFO] [stdout] | [INFO] [stdout] 57 | ...fn new(search_command_sender: Sender, console_output_sender: Sender, input_receiver: Receiver) -> Self { [INFO] [stdout] | -------------------------------------------- ------------------------------------- --------------------------------- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] | | | [INFO] [stdout] | | these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] | these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] 58 | ...Self { [INFO] [stdout] 59 | ... game: Game::default(), [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 `ladybug` (lib) due to 2 previous errors; 3 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: value assigned to `nps` is never read [INFO] [stdout] --> src/search/negamax.rs:36:21 [INFO] [stdout] | [INFO] [stdout] 36 | let mut nps: u128 = 0; [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `position` [INFO] [stdout] --> src/zobrist.rs:110:13 [INFO] [stdout] | [INFO] [stdout] 110 | let position = Board::from_fen("rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq e3 0 1").unwrap().position; [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_position` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `position` [INFO] [stdout] --> src/zobrist.rs:114:13 [INFO] [stdout] | [INFO] [stdout] 114 | let position = Board::from_fen("rnbqkbnr/ppp1pppp/8/3p4/4P3/8/PPPP1PPP/RNBQKBNR w KQkq d6 0 2").unwrap().position; [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_position` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `state` is never read [INFO] [stdout] --> src/ladybug.rs:16:5 [INFO] [stdout] | [INFO] [stdout] 12 | pub struct Ladybug { [INFO] [stdout] | ------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 16 | state: State, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `Busy` is never constructed [INFO] [stdout] --> src/ladybug.rs:42:5 [INFO] [stdout] | [INFO] [stdout] 40 | enum State { [INFO] [stdout] | ----- variant in this enum [INFO] [stdout] 41 | Idle, [INFO] [stdout] 42 | Busy, [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/ladybug.rs:59:19 [INFO] [stdout] | [INFO] [stdout] 57 | ...fn new(search_command_sender: Sender, console_output_sender: Sender, input_receiver: Receiver) -> Self { [INFO] [stdout] | -------------------------------------------- ------------------------------------- --------------------------------- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] | | | [INFO] [stdout] | | these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] | these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] 58 | ...Self { [INFO] [stdout] 59 | ... game: Game::default(), [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; 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `ladybug` (lib test) due to 2 previous errors; 5 warnings emitted [INFO] running `Command { std: "docker" "inspect" "79b5982d59e7b9ac846c58f4071bd0ef53e85d60641f14d45428640aabd75a77", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "79b5982d59e7b9ac846c58f4071bd0ef53e85d60641f14d45428640aabd75a77", kill_on_drop: false }` [INFO] [stdout] 79b5982d59e7b9ac846c58f4071bd0ef53e85d60641f14d45428640aabd75a77