[INFO] cloning repository https://github.com/breezykermo/1-maze-rs [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/breezykermo/1-maze-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbreezykermo%2F1-maze-rs", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbreezykermo%2F1-maze-rs'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] a70d09c060e4405721a5e4487ed7a2e3f7d942b4 [INFO] checking breezykermo/1-maze-rs/a70d09c060e4405721a5e4487ed7a2e3f7d942b4 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%2Fbreezykermo%2F1-maze-rs" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/breezykermo/1-maze-rs 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/breezykermo/1-maze-rs [INFO] finished tweaking git repo https://github.com/breezykermo/1-maze-rs [INFO] tweaked toml for git repo https://github.com/breezykermo/1-maze-rs written to /workspace/builds/worker-1-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/breezykermo/1-maze-rs 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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 69aed16f39d2cf9230768f4220f0d516c8a6ff1daea684e85ffd03c9dc617df0 [INFO] running `Command { std: "docker" "start" "-a" "69aed16f39d2cf9230768f4220f0d516c8a6ff1daea684e85ffd03c9dc617df0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "69aed16f39d2cf9230768f4220f0d516c8a6ff1daea684e85ffd03c9dc617df0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "69aed16f39d2cf9230768f4220f0d516c8a6ff1daea684e85ffd03c9dc617df0", kill_on_drop: false }` [INFO] [stdout] 69aed16f39d2cf9230768f4220f0d516c8a6ff1daea684e85ffd03c9dc617df0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] f4f0210282d251941d0da285d2a7a7f6763719b120fb782eaedd9e9f5dbb3669 [INFO] running `Command { std: "docker" "start" "-a" "f4f0210282d251941d0da285d2a7a7f6763719b120fb782eaedd9e9f5dbb3669", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.101 [INFO] [stderr] Checking ppv-lite86 v0.2.10 [INFO] [stderr] Checking getrandom v0.2.3 [INFO] [stderr] Checking rand_core v0.6.3 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rand v0.8.4 [INFO] [stderr] Checking rust_1_maze v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `super::*` [INFO] [stdout] --> src/lib.rs:76:9 [INFO] [stdout] | [INFO] [stdout] 76 | use super::*; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `row` [INFO] [stdout] --> src/common.rs:56:20 [INFO] [stdout] | [INFO] [stdout] 56 | pub fn is_in_range(row: usize, col: usize, num_rows: usize, num_cols: usize) -> bool { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_row` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `col` [INFO] [stdout] --> src/common.rs:56:32 [INFO] [stdout] | [INFO] [stdout] 56 | pub fn is_in_range(row: usize, col: usize, num_rows: usize, num_cols: usize) -> bool { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_col` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `num_rows` [INFO] [stdout] --> src/common.rs:56:44 [INFO] [stdout] | [INFO] [stdout] 56 | pub fn is_in_range(row: usize, col: usize, num_rows: usize, num_cols: usize) -> bool { [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_rows` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `num_cols` [INFO] [stdout] --> src/common.rs:56:61 [INFO] [stdout] | [INFO] [stdout] 56 | pub fn is_in_range(row: usize, col: usize, num_rows: usize, num_cols: usize) -> bool { [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_cols` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `num_rows` [INFO] [stdout] --> src/common.rs:62:5 [INFO] [stdout] | [INFO] [stdout] 62 | num_rows: usize, [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_rows` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `num_cols` [INFO] [stdout] --> src/common.rs:63:5 [INFO] [stdout] | [INFO] [stdout] 63 | num_cols: usize, [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_cols` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `room` [INFO] [stdout] --> src/common.rs:65:5 [INFO] [stdout] | [INFO] [stdout] 65 | room: &MazeRoom, [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_room` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `dir` [INFO] [stdout] --> src/common.rs:66:5 [INFO] [stdout] | [INFO] [stdout] 66 | dir: Direction, [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_dir` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `num_cols` [INFO] [stdout] --> src/common.rs:72:28 [INFO] [stdout] | [INFO] [stdout] 72 | pub fn initialize_maze<'a>(num_cols: usize, num_rows: usize, maze: &mut Vec>) -> () { [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_cols` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `num_rows` [INFO] [stdout] --> src/common.rs:72:45 [INFO] [stdout] | [INFO] [stdout] 72 | pub fn initialize_maze<'a>(num_cols: usize, num_rows: usize, maze: &mut Vec>) -> () { [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_rows` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `maze` [INFO] [stdout] --> src/common.rs:72:62 [INFO] [stdout] | [INFO] [stdout] 72 | pub fn initialize_maze<'a>(num_cols: usize, num_rows: usize, maze: &mut Vec>) -> () { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_maze` [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:15:8 [INFO] [stdout] | [INFO] [stdout] 10 | fn read_lines

(filename: P) -> io::Result>> [INFO] [stdout] | ----------- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 14 | let file = File::open(filename)?; [INFO] [stdout] | ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] 15 | Ok(io::BufReader::new(file).lines()) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [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] | [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; 11 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `row` [INFO] [stdout] --> src/common.rs:56:20 [INFO] [stdout] | [INFO] [stdout] 56 | pub fn is_in_range(row: usize, col: usize, num_rows: usize, num_cols: usize) -> bool { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_row` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `col` [INFO] [stdout] --> src/common.rs:56:32 [INFO] [stdout] | [INFO] [stdout] 56 | pub fn is_in_range(row: usize, col: usize, num_rows: usize, num_cols: usize) -> bool { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_col` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `num_rows` [INFO] [stdout] --> src/common.rs:56:44 [INFO] [stdout] | [INFO] [stdout] 56 | pub fn is_in_range(row: usize, col: usize, num_rows: usize, num_cols: usize) -> bool { [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_rows` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `num_cols` [INFO] [stdout] --> src/common.rs:56:61 [INFO] [stdout] | [INFO] [stdout] 56 | pub fn is_in_range(row: usize, col: usize, num_rows: usize, num_cols: usize) -> bool { [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_cols` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `num_rows` [INFO] [stdout] --> src/common.rs:62:5 [INFO] [stdout] | [INFO] [stdout] 62 | num_rows: usize, [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_rows` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `num_cols` [INFO] [stdout] --> src/common.rs:63:5 [INFO] [stdout] | [INFO] [stdout] 63 | num_cols: usize, [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_cols` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `room` [INFO] [stdout] --> src/common.rs:65:5 [INFO] [stdout] | [INFO] [stdout] 65 | room: &MazeRoom, [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_room` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `dir` [INFO] [stdout] --> src/common.rs:66:5 [INFO] [stdout] | [INFO] [stdout] 66 | dir: Direction, [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_dir` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `num_cols` [INFO] [stdout] --> src/common.rs:72:28 [INFO] [stdout] | [INFO] [stdout] 72 | pub fn initialize_maze<'a>(num_cols: usize, num_rows: usize, maze: &mut Vec>) -> () { [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_cols` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `num_rows` [INFO] [stdout] --> src/common.rs:72:45 [INFO] [stdout] | [INFO] [stdout] 72 | pub fn initialize_maze<'a>(num_cols: usize, num_rows: usize, maze: &mut Vec>) -> () { [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_rows` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `maze` [INFO] [stdout] --> src/common.rs:72:62 [INFO] [stdout] | [INFO] [stdout] 72 | pub fn initialize_maze<'a>(num_cols: usize, num_rows: usize, maze: &mut Vec>) -> () { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_maze` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `rust_1_maze` (lib) due to 2 previous errors; 11 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [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:15:8 [INFO] [stdout] | [INFO] [stdout] 10 | fn read_lines

(filename: P) -> io::Result>> [INFO] [stdout] | ----------- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 14 | let file = File::open(filename)?; [INFO] [stdout] | ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] 15 | Ok(io::BufReader::new(file).lines()) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [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] | [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; 12 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `rust_1_maze` (lib test) due to 2 previous errors; 12 warnings emitted [INFO] running `Command { std: "docker" "inspect" "f4f0210282d251941d0da285d2a7a7f6763719b120fb782eaedd9e9f5dbb3669", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f4f0210282d251941d0da285d2a7a7f6763719b120fb782eaedd9e9f5dbb3669", kill_on_drop: false }` [INFO] [stdout] f4f0210282d251941d0da285d2a7a7f6763719b120fb782eaedd9e9f5dbb3669