[INFO] fetching crate ranked_voting 0.3.0... [INFO] checking ranked_voting-0.3.0 against try#4d98531622e1718ae0bc3c7a1ab9cd8938428452+rustflags=-Dtail_expr_drop_order for pr-129604 [INFO] extracting crate ranked_voting 0.3.0 into /workspace/builds/worker-4-tc2/source [INFO] validating manifest of crates.io crate ranked_voting 0.3.0 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 crates.io crate ranked_voting 0.3.0 [INFO] finished tweaking crates.io crate ranked_voting 0.3.0 [INFO] tweaked toml for crates.io crate ranked_voting 0.3.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Updating crates.io index [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Locking 55 packages to latest compatible versions [INFO] [stderr] Adding addr2line v0.22.0 (latest: v0.24.1) [INFO] [stderr] Adding env_logger v0.9.3 (latest: v0.11.5) [INFO] [stderr] Adding generic-array v0.14.7 (latest: v1.1.0) [INFO] [stderr] Adding gimli v0.29.0 (latest: v0.31.0) [INFO] [stderr] Adding hermit-abi v0.1.19 (latest: v0.4.0) [INFO] [stderr] Adding miniz_oxide v0.7.4 (latest: v0.8.0) [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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] e3e95d445f79a1038b6beb43569854cb8e463e984c05e82794c43715ecf9d1af [INFO] running `Command { std: "docker" "start" "-a" "e3e95d445f79a1038b6beb43569854cb8e463e984c05e82794c43715ecf9d1af", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "e3e95d445f79a1038b6beb43569854cb8e463e984c05e82794c43715ecf9d1af", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e3e95d445f79a1038b6beb43569854cb8e463e984c05e82794c43715ecf9d1af", kill_on_drop: false }` [INFO] [stdout] e3e95d445f79a1038b6beb43569854cb8e463e984c05e82794c43715ecf9d1af [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] bd8f2e82d8d973bb799242d5f3efc1b80ce10ea3740d14b17a8e912f9029ba6d [INFO] running `Command { std: "docker" "start" "-a" "bd8f2e82d8d973bb799242d5f3efc1b80ce10ea3740d14b17a8e912f9029ba6d", kill_on_drop: false }` [INFO] [stderr] Checking aho-corasick v1.1.3 [INFO] [stderr] Checking tokio v1.40.0 [INFO] [stderr] Checking crypto-common v0.1.6 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking digest v0.10.7 [INFO] [stderr] Checking sha2 v0.10.8 [INFO] [stderr] Checking regex-automata v0.4.7 [INFO] [stderr] Checking sha256 v1.5.0 [INFO] [stderr] Checking ranked_voting v0.3.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: struct `VoteSignature` is never constructed [INFO] [stdout] --> src/lib.rs:198:8 [INFO] [stdout] | [INFO] [stdout] 198 | struct VoteSignature { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [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:174:19 [INFO] [stdout] | [INFO] [stdout] 173 | fn sum>(iter: I) -> Self { [INFO] [stdout] | ------- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] 174 | VoteCount(iter.map(|vc| vc.0).sum()) [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; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `ranked_voting` (lib) due to 2 previous errors; 1 warning emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "bd8f2e82d8d973bb799242d5f3efc1b80ce10ea3740d14b17a8e912f9029ba6d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "bd8f2e82d8d973bb799242d5f3efc1b80ce10ea3740d14b17a8e912f9029ba6d", kill_on_drop: false }` [INFO] [stdout] bd8f2e82d8d973bb799242d5f3efc1b80ce10ea3740d14b17a8e912f9029ba6d