[INFO] fetching crate mapped-guard 0.0.1... [INFO] checking mapped-guard-0.0.1 against try#4d98531622e1718ae0bc3c7a1ab9cd8938428452+rustflags=-Dtail_expr_drop_order for pr-129604 [INFO] extracting crate mapped-guard 0.0.1 into /workspace/builds/worker-1-tc2/source [INFO] validating manifest of crates.io crate mapped-guard 0.0.1 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 mapped-guard 0.0.1 [INFO] finished tweaking crates.io crate mapped-guard 0.0.1 [INFO] tweaked toml for crates.io crate mapped-guard 0.0.1 written to /workspace/builds/worker-1-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 37 packages to latest compatible versions [INFO] [stderr] Adding idna v0.5.0 (latest: v1.0.2) [INFO] [stderr] Adding pulldown-cmark v0.9.6 (latest: v0.12.0) [INFO] [stderr] Adding toml v0.7.8 (latest: v0.8.19) [INFO] [stderr] Adding toml_edit v0.19.15 (latest: v0.22.20) [INFO] [stderr] Adding winnow v0.5.40 (latest: v0.6.18) [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] 071deddaec1a15e196bd0ef181ec69fb233525a0860fd9454e0d494c9ca06070 [INFO] running `Command { std: "docker" "start" "-a" "071deddaec1a15e196bd0ef181ec69fb233525a0860fd9454e0d494c9ca06070", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "071deddaec1a15e196bd0ef181ec69fb233525a0860fd9454e0d494c9ca06070", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "071deddaec1a15e196bd0ef181ec69fb233525a0860fd9454e0d494c9ca06070", kill_on_drop: false }` [INFO] [stdout] 071deddaec1a15e196bd0ef181ec69fb233525a0860fd9454e0d494c9ca06070 [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] 6f1a4a976d959cfa86da1b1455bafed05cd9811797e0be74a26d2f33bb678834 [INFO] running `Command { std: "docker" "start" "-a" "6f1a4a976d959cfa86da1b1455bafed05cd9811797e0be74a26d2f33bb678834", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.86 [INFO] [stderr] Checking winnow v0.5.40 [INFO] [stderr] Checking regex-syntax v0.8.4 [INFO] [stderr] Compiling pulldown-cmark v0.9.6 [INFO] [stderr] Checking toml_datetime v0.6.8 [INFO] [stderr] Checking serde_spanned v0.6.7 [INFO] [stderr] Compiling semver v1.0.23 [INFO] [stderr] Checking bitflags v2.6.0 [INFO] [stderr] Compiling cargo-husky v1.5.0 [INFO] [stderr] Checking git_info v0.1.3 [INFO] [stderr] Checking mapped-guard v0.0.1 (/opt/rustwide/workdir) [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:94:12 [INFO] [stdout] | [INFO] [stdout] 91 | fn map_guard(self, map: impl FnOnce(&'a G) -> R) -> MappedGuard, R> { [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] 92 | let boxed = Box::new(self); [INFO] [stdout] | ----- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] 93 | MappedGuard { [INFO] [stdout] 94 | target: map(unsafe { [INFO] [stdout] | _____________________^ [INFO] [stdout] 95 | | //SAFETY: `guard` can't be dropped independently from `target`. [INFO] [stdout] 96 | | detach_borrow(&*boxed) [INFO] [stdout] 97 | | }), [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: 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:108:3 [INFO] [stdout] | [INFO] [stdout] 104 | self, [INFO] [stdout] | ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] 105 | maybe_map: impl FnOnce(&'a G) -> Option, [INFO] [stdout] | ------------------------------------------ these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] 106 | ) -> Option, R>> { [INFO] [stdout] 107 | let boxed = Box::new(self); [INFO] [stdout] | ----- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] 108 | / maybe_map(unsafe { [INFO] [stdout] 109 | | //SAFETY: `guard` can't be dropped independently from `target`. [INFO] [stdout] 110 | | detach_borrow(&*boxed) [INFO] [stdout] 111 | | }) [INFO] [stdout] | |__________^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [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:112:8 [INFO] [stdout] | [INFO] [stdout] 104 | self, [INFO] [stdout] | ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] 105 | maybe_map: impl FnOnce(&'a G) -> Option, [INFO] [stdout] | ------------------------------------------ these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] 106 | ) -> Option, R>> { [INFO] [stdout] 107 | let boxed = Box::new(self); [INFO] [stdout] | ----- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 112 | .map(|target| MappedGuard { [INFO] [stdout] | ______________^ [INFO] [stdout] 113 | | target, [INFO] [stdout] 114 | | guard: boxed, [INFO] [stdout] 115 | | }) [INFO] [stdout] | |_________^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [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:125:6 [INFO] [stdout] | [INFO] [stdout] 121 | self, [INFO] [stdout] | ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] 122 | try_map: impl FnOnce(&'a G) -> Result, [INFO] [stdout] | ------------------------------------------- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] 123 | ) -> Result, R>, E> { [INFO] [stdout] 124 | let boxed = Box::new(self); [INFO] [stdout] | ----- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] 125 | Ok(MappedGuard { [INFO] [stdout] | ____________^ [INFO] [stdout] 126 | | target: try_map(unsafe { [INFO] [stdout] 127 | | //SAFETY: `guard` can't be dropped independently from `target`. [INFO] [stdout] 128 | | detach_borrow(&*boxed) [INFO] [stdout] 129 | | })?, [INFO] [stdout] 130 | | guard: boxed, [INFO] [stdout] 131 | | }) [INFO] [stdout] | |_________^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 4 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `mapped-guard` (lib) due to 5 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "6f1a4a976d959cfa86da1b1455bafed05cd9811797e0be74a26d2f33bb678834", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6f1a4a976d959cfa86da1b1455bafed05cd9811797e0be74a26d2f33bb678834", kill_on_drop: false }` [INFO] [stdout] 6f1a4a976d959cfa86da1b1455bafed05cd9811797e0be74a26d2f33bb678834