[INFO] cloning repository https://github.com/Lakret/backtrack_rs [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Lakret/backtrack_rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLakret%2Fbacktrack_rs", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLakret%2Fbacktrack_rs'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 21a7dfdaf0c1a79561b1e3182f90e30563868603 [INFO] checking Lakret/backtrack_rs/21a7dfdaf0c1a79561b1e3182f90e30563868603 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%2FLakret%2Fbacktrack_rs" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Lakret/backtrack_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/Lakret/backtrack_rs [INFO] finished tweaking git repo https://github.com/Lakret/backtrack_rs [INFO] tweaked toml for git repo https://github.com/Lakret/backtrack_rs written to /workspace/builds/worker-5-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/Lakret/backtrack_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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 68072d116f296c283fe121c80a173034b5e973ef5c021516760f2c862bb62449 [INFO] running `Command { std: "docker" "start" "-a" "68072d116f296c283fe121c80a173034b5e973ef5c021516760f2c862bb62449", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "68072d116f296c283fe121c80a173034b5e973ef5c021516760f2c862bb62449", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "68072d116f296c283fe121c80a173034b5e973ef5c021516760f2c862bb62449", kill_on_drop: false }` [INFO] [stdout] 68072d116f296c283fe121c80a173034b5e973ef5c021516760f2c862bb62449 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 2a8711bf9de3cc664b4d3670cd306cf9e214d60bf056576395ff624a584e9b71 [INFO] running `Command { std: "docker" "start" "-a" "2a8711bf9de3cc664b4d3670cd306cf9e214d60bf056576395ff624a584e9b71", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v1.0.0 [INFO] [stderr] Checking cfg-if v0.1.10 [INFO] [stderr] Compiling maybe-uninit v2.0.0 [INFO] [stderr] Compiling libc v0.2.70 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Compiling serde v1.0.110 [INFO] [stderr] Compiling memchr v2.3.3 [INFO] [stderr] Compiling proc-macro2 v1.0.12 [INFO] [stderr] Compiling byteorder v1.3.4 [INFO] [stderr] Compiling ryu v1.0.4 [INFO] [stderr] Compiling unicode-xid v0.2.0 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Checking itoa v0.4.5 [INFO] [stderr] Compiling rayon-core v1.7.0 [INFO] [stderr] Checking either v1.5.3 [INFO] [stderr] Compiling syn v1.0.21 [INFO] [stderr] Checking unicode-width v0.1.7 [INFO] [stderr] Checking regex-syntax v0.6.17 [INFO] [stderr] Checking itertools v0.9.0 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking walkdir v2.3.1 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Checking oorandom v11.1.1 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Checking clap v2.33.1 [INFO] [stderr] Compiling crossbeam-utils v0.7.2 [INFO] [stderr] Compiling memoffset v0.5.4 [INFO] [stderr] Compiling crossbeam-epoch v0.8.2 [INFO] [stderr] Compiling num-traits v0.2.11 [INFO] [stderr] Checking csv-core v0.1.10 [INFO] [stderr] Compiling cast v0.2.3 [INFO] [stderr] Checking regex-automata v0.1.9 [INFO] [stderr] Compiling quote v1.0.5 [INFO] [stderr] Checking num_cpus v1.13.0 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking crossbeam-queue v0.2.1 [INFO] [stderr] Checking crossbeam-channel v0.4.2 [INFO] [stderr] Checking regex v1.3.7 [INFO] [stderr] Checking criterion-plot v0.4.2 [INFO] [stderr] Checking crossbeam-deque v0.7.3 [INFO] [stderr] Checking plotters v0.2.14 [INFO] [stderr] Checking crossbeam v0.7.3 [INFO] [stderr] Checking rayon v1.3.0 [INFO] [stderr] Checking backtrack_rs v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `std::thread::JoinHandle` [INFO] [stdout] --> src/lib.rs:210:5 [INFO] [stdout] | [INFO] [stdout] 210 | use std::thread::JoinHandle; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `reduced_domain` [INFO] [stdout] --> src/ac3.rs:19:13 [INFO] [stdout] | [INFO] [stdout] 19 | let reduced_domain = csp [INFO] [stdout] | ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_reduced_domain` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/ac3.rs:33:8 [INFO] [stdout] | [INFO] [stdout] 33 | [x, y] => {} [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> src/ac3.rs:33:11 [INFO] [stdout] | [INFO] [stdout] 33 | [x, y] => {} [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/ac3.rs:15:7 [INFO] [stdout] | [INFO] [stdout] 15 | let mut constraint_refs = csp.constraints.iter().collect::>(); [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: unused variable: `iteration` [INFO] [stdout] --> src/lib.rs:284:3 [INFO] [stdout] | [INFO] [stdout] 284 | iteration: u32, [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_iteration` [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:247:21 [INFO] [stdout] | [INFO] [stdout] 244 | let (send_work, get_work) = (send_work.clone(), get_work.clone()); [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] 245 | let send_result = send_result.clone(); [INFO] [stdout] | ----------- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] 246 | [INFO] [stdout] 247 | thread::spawn(move || loop { [INFO] [stdout] | _____________________^ [INFO] [stdout] 248 | | match get_work.recv().unwrap() { [INFO] [stdout] 249 | | Job(work_unit) => do_work(work_unit, send_work.clone(), send_result.clone(), 1), [INFO] [stdout] 250 | | Terminate => { [INFO] [stdout] ... | [INFO] [stdout] 254 | | } [INFO] [stdout] 255 | | }) [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; 6 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `backtrack_rs` (lib) due to 2 previous errors; 6 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "2a8711bf9de3cc664b4d3670cd306cf9e214d60bf056576395ff624a584e9b71", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2a8711bf9de3cc664b4d3670cd306cf9e214d60bf056576395ff624a584e9b71", kill_on_drop: false }` [INFO] [stdout] 2a8711bf9de3cc664b4d3670cd306cf9e214d60bf056576395ff624a584e9b71