[INFO] fetching crate libnail 0.2.0... [INFO] checking libnail-0.2.0 against try#4d98531622e1718ae0bc3c7a1ab9cd8938428452+rustflags=-Dtail_expr_drop_order for pr-129604 [INFO] extracting crate libnail 0.2.0 into /workspace/builds/worker-0-tc2/source [INFO] validating manifest of crates.io crate libnail 0.2.0 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 libnail 0.2.0 [INFO] finished tweaking crates.io crate libnail 0.2.0 [INFO] tweaked toml for crates.io crate libnail 0.2.0 written to /workspace/builds/worker-0-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] Updating crates.io index [INFO] [stderr] Locking 139 packages to latest compatible versions [INFO] [stderr] Adding aligned-vec v0.5.0 (latest: v0.6.1) [INFO] [stderr] Adding bitflags v1.3.2 (latest: v2.6.0) [INFO] [stderr] Adding cfg-expr v0.15.8 (latest: v0.16.0) [INFO] [stderr] Adding itertools v0.12.1 (latest: v0.13.0) [INFO] [stderr] Adding miniz_oxide v0.7.4 (latest: v0.8.0) [INFO] [stderr] Adding siphasher v0.3.11 (latest: v1.0.1) [INFO] [stderr] Adding system-deps v6.2.2 (latest: v7.0.2) [INFO] [stderr] Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.2+wasi-0.2.1) [INFO] [stderr] Adding yansi v0.5.1 (latest: v1.0.1) [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] 1abf59e85b8711555ea4ea37f17d5f480b3ea2546ba8215e1cc67a2a6a0888d9 [INFO] running `Command { std: "docker" "start" "-a" "1abf59e85b8711555ea4ea37f17d5f480b3ea2546ba8215e1cc67a2a6a0888d9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "1abf59e85b8711555ea4ea37f17d5f480b3ea2546ba8215e1cc67a2a6a0888d9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1abf59e85b8711555ea4ea37f17d5f480b3ea2546ba8215e1cc67a2a6a0888d9", kill_on_drop: false }` [INFO] [stdout] 1abf59e85b8711555ea4ea37f17d5f480b3ea2546ba8215e1cc67a2a6a0888d9 [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] 0e99042d78aa634116b78d5e230c6cc7fcc2f4529569702367c5179e2e68f5de [INFO] running `Command { std: "docker" "start" "-a" "0e99042d78aa634116b78d5e230c6cc7fcc2f4529569702367c5179e2e68f5de", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.158 [INFO] [stderr] Compiling rand_core v0.6.4 [INFO] [stderr] Compiling siphasher v0.3.11 [INFO] [stderr] Checking buffer-redux v1.0.2 [INFO] [stderr] Checking scoped_threadpool v0.1.9 [INFO] [stderr] Checking diff v0.1.13 [INFO] [stderr] Compiling zerocopy-derive v0.7.35 [INFO] [stderr] Compiling serde_derive v1.0.209 [INFO] [stderr] Compiling thiserror-impl v1.0.63 [INFO] [stderr] Checking pretty_assertions v1.4.0 [INFO] [stderr] Checking phf_shared v0.11.2 [INFO] [stderr] Compiling rand v0.8.5 [INFO] [stderr] Compiling phf_generator v0.11.2 [INFO] [stderr] Compiling phf_macros v0.11.2 [INFO] [stderr] Checking zerocopy v0.7.35 [INFO] [stderr] Checking getrandom v0.2.15 [INFO] [stderr] Checking thiserror v1.0.63 [INFO] [stderr] Checking phf v0.11.2 [INFO] [stderr] Checking rand_pcg v0.3.1 [INFO] [stderr] Checking ppv-lite86 v0.2.20 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking serde v1.0.209 [INFO] [stderr] Checking seq_io v0.3.2 [INFO] [stderr] Checking serde_json v1.0.127 [INFO] [stderr] Checking libnail v0.2.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/align/structs/anti_diagonal_bounds.rs:1569:9 [INFO] [stdout] | [INFO] [stdout] 1569 | b1.ascii(None); [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 1569 | let _ = b1.ascii(None); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/align/structs/anti_diagonal_bounds.rs:1570:9 [INFO] [stdout] | [INFO] [stdout] 1570 | b2.ascii(None); [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 1570 | let _ = b2.ascii(None); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/align/structs/anti_diagonal_bounds.rs:1573:9 [INFO] [stdout] | [INFO] [stdout] 1573 | b1.ascii(None); [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 1573 | let _ = b1.ascii(None); [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/output/path_buf_ext.rs:24:12 [INFO] [stdout] | [INFO] [stdout] 20 | let file = file_options [INFO] [stdout] | ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 24 | Ok(BufWriter::new(file)) [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: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/output/path_buf_ext.rs:24:12 [INFO] [stdout] | [INFO] [stdout] 20 | let file = file_options [INFO] [stdout] | ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 24 | Ok(BufWriter::new(file)) [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; 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `libnail` (lib test) due to 2 previous errors; 3 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: could not compile `libnail` (lib) due to 2 previous errors [INFO] running `Command { std: "docker" "inspect" "0e99042d78aa634116b78d5e230c6cc7fcc2f4529569702367c5179e2e68f5de", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0e99042d78aa634116b78d5e230c6cc7fcc2f4529569702367c5179e2e68f5de", kill_on_drop: false }` [INFO] [stdout] 0e99042d78aa634116b78d5e230c6cc7fcc2f4529569702367c5179e2e68f5de