[INFO] fetching crate skipping-search 0.1.0... [INFO] checking skipping-search-0.1.0 against try#4d98531622e1718ae0bc3c7a1ab9cd8938428452+rustflags=-Dtail_expr_drop_order for pr-129604 [INFO] extracting crate skipping-search 0.1.0 into /workspace/builds/worker-7-tc2/source [INFO] validating manifest of crates.io crate skipping-search 0.1.0 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 skipping-search 0.1.0 [INFO] finished tweaking crates.io crate skipping-search 0.1.0 [INFO] tweaked toml for crates.io crate skipping-search 0.1.0 written to /workspace/builds/worker-7-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 41 packages to latest compatible versions [INFO] [stderr] Adding bit-set v0.5.3 (latest: v0.8.0) [INFO] [stderr] Adding bit-vec v0.6.3 (latest: v0.8.0) [INFO] [stderr] Adding bitflags v1.3.2 (latest: v2.6.0) [INFO] [stderr] Adding linux-raw-sys v0.4.14 (latest: v0.6.5) [INFO] [stderr] Adding proptest v0.7.2 (latest: v1.5.0) [INFO] [stderr] Adding quick-error v1.2.3 (latest: v2.0.1) [INFO] [stderr] Adding rand v0.4.6 (latest: v0.8.5) [INFO] [stderr] Adding rand_core v0.3.1 (latest: v0.6.4) [INFO] [stderr] Adding rand_core v0.4.2 (latest: v0.6.4) [INFO] [stderr] Adding rdrand v0.4.0 (latest: v0.8.3) [INFO] [stderr] Adding regex-syntax v0.4.2 (latest: v0.8.4) [INFO] [stderr] Adding rusty-fork v0.2.2 (latest: v0.3.0) [INFO] [stderr] Adding windows-sys v0.52.0 (latest: v0.59.0) [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] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] f0cae928d4d4b6be56130bc792ccb6830dc7ec3bfa0a7978b0e53351ad01cec2 [INFO] running `Command { std: "docker" "start" "-a" "f0cae928d4d4b6be56130bc792ccb6830dc7ec3bfa0a7978b0e53351ad01cec2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "f0cae928d4d4b6be56130bc792ccb6830dc7ec3bfa0a7978b0e53351ad01cec2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f0cae928d4d4b6be56130bc792ccb6830dc7ec3bfa0a7978b0e53351ad01cec2", kill_on_drop: false }` [INFO] [stdout] f0cae928d4d4b6be56130bc792ccb6830dc7ec3bfa0a7978b0e53351ad01cec2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] aeb905899e1a141c878cd80182046c99fb89cc81020241524b73fd0c8b6cb5d3 [INFO] running `Command { std: "docker" "start" "-a" "aeb905899e1a141c878cd80182046c99fb89cc81020241524b73fd0c8b6cb5d3", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021 [INFO] [stderr] Compiling libc v0.2.158 [INFO] [stderr] Checking once_cell v1.19.0 [INFO] [stderr] Compiling num-traits v0.2.19 [INFO] [stderr] Checking bit-vec v0.6.3 [INFO] [stderr] Checking quick-error v1.2.3 [INFO] [stderr] Checking regex-syntax v0.4.2 [INFO] [stderr] Checking skipping-search v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: `#[inline]` is ignored on function prototypes [INFO] [stdout] --> src/lib.rs:82:5 [INFO] [stdout] | [INFO] [stdout] 82 | #[inline] [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_attributes)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `#[inline]` is ignored on function prototypes [INFO] [stdout] --> src/lib.rs:88:5 [INFO] [stdout] | [INFO] [stdout] 88 | #[inline] [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `#[inline]` is ignored on function prototypes [INFO] [stdout] --> src/lib.rs:96:5 [INFO] [stdout] | [INFO] [stdout] 96 | #[inline] [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/lib.rs:335:9 [INFO] [stdout] | [INFO] [stdout] 324 | let mut n_largest = BinaryHeap::with_capacity(capacity); [INFO] [stdout] | --------- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 335 | n_largest.into_iter().map(|r|{r.0}).min().expect("len() == capacity > 0").0 [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] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/lib.rs:331:21 [INFO] [stdout] | [INFO] [stdout] 331 | mem::replace(&mut *smallest_of_largest, candidate); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 331 | let _ = mem::replace(&mut *smallest_of_largest, candidate); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/lib.rs:363:21 [INFO] [stdout] | [INFO] [stdout] 363 | mem::replace(&mut *largest_of_smallest, max); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 363 | let _ = mem::replace(&mut *largest_of_smallest, max); [INFO] [stdout] | +++++++ [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 `skipping-search` (lib) due to 2 previous errors; 5 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "aeb905899e1a141c878cd80182046c99fb89cc81020241524b73fd0c8b6cb5d3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "aeb905899e1a141c878cd80182046c99fb89cc81020241524b73fd0c8b6cb5d3", kill_on_drop: false }` [INFO] [stdout] aeb905899e1a141c878cd80182046c99fb89cc81020241524b73fd0c8b6cb5d3