[INFO] fetching crate reference-counted-singleton 0.1.5... [INFO] checking reference-counted-singleton-0.1.5 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864 [INFO] extracting crate reference-counted-singleton 0.1.5 into /workspace/builds/worker-3-tc2/source [INFO] validating manifest of crates.io crate reference-counted-singleton 0.1.5 on toolchain 7014e13d5becc920d4bea3cd87942c8a13d359bf [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate reference-counted-singleton 0.1.5 [INFO] finished tweaking crates.io crate reference-counted-singleton 0.1.5 [INFO] tweaked toml for crates.io crate reference-counted-singleton 0.1.5 written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 42 packages to latest compatible versions [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] b6aacc804225d37c762073008fb27a3aa0c6a99b774fba70468d8166bb823d3f [INFO] running `Command { std: "docker" "start" "-a" "b6aacc804225d37c762073008fb27a3aa0c6a99b774fba70468d8166bb823d3f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "b6aacc804225d37c762073008fb27a3aa0c6a99b774fba70468d8166bb823d3f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b6aacc804225d37c762073008fb27a3aa0c6a99b774fba70468d8166bb823d3f", kill_on_drop: false }` [INFO] [stdout] b6aacc804225d37c762073008fb27a3aa0c6a99b774fba70468d8166bb823d3f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 1ea733edacafbfa8b9fcd742c3045dc8e81cba8cd0cfd2e89ca848210b6fcafe [INFO] running `Command { std: "docker" "start" "-a" "1ea733edacafbfa8b9fcd742c3045dc8e81cba8cd0cfd2e89ca848210b6fcafe", kill_on_drop: false }` [INFO] [stderr] Checking futures-core v0.3.30 [INFO] [stderr] Checking sdd v3.0.3 [INFO] [stderr] Checking assert_matches v1.5.0 [INFO] [stderr] Checking reference-counted-singleton v0.1.5 (/opt/rustwide/workdir) [INFO] [stderr] Compiling syn v2.0.77 [INFO] [stdout] error: this value of type `Result>>, PoisonError>>>>` has significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/lib.rs:44:32 [INFO] [stdout] | [INFO] [stdout] 42 | creator: impl FnOnce() -> Result, [INFO] [stdout] | ------- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] 43 | ) -> Result, Option> { [INFO] [stdout] 44 | if let Ok(mut value) = self.0.lock() { [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 [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `reference-counted-singleton` (lib) due to 2 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "1ea733edacafbfa8b9fcd742c3045dc8e81cba8cd0cfd2e89ca848210b6fcafe", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1ea733edacafbfa8b9fcd742c3045dc8e81cba8cd0cfd2e89ca848210b6fcafe", kill_on_drop: false }` [INFO] [stdout] 1ea733edacafbfa8b9fcd742c3045dc8e81cba8cd0cfd2e89ca848210b6fcafe