[INFO] fetching crate lightproc 0.3.6-alpha.0... [INFO] checking lightproc-0.3.6-alpha.0 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864 [INFO] extracting crate lightproc 0.3.6-alpha.0 into /workspace/builds/worker-2-tc2/source [INFO] validating manifest of crates.io crate lightproc 0.3.6-alpha.0 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 lightproc 0.3.6-alpha.0 [INFO] finished tweaking crates.io crate lightproc 0.3.6-alpha.0 [INFO] tweaked toml for crates.io crate lightproc 0.3.6-alpha.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] crate crates.io crate lightproc 0.3.6-alpha.0 already has a lockfile, it will not be regenerated [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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 74dc9aa2aad48cd2a2b498ab29ca7e836a817716c253e339c7fc20534871840d [INFO] running `Command { std: "docker" "start" "-a" "74dc9aa2aad48cd2a2b498ab29ca7e836a817716c253e339c7fc20534871840d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "74dc9aa2aad48cd2a2b498ab29ca7e836a817716c253e339c7fc20534871840d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "74dc9aa2aad48cd2a2b498ab29ca7e836a817716c253e339c7fc20534871840d", kill_on_drop: false }` [INFO] [stdout] 74dc9aa2aad48cd2a2b498ab29ca7e836a817716c253e339c7fc20534871840d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] b4e8b725347e3e3d32a5f4a774ffd7f0500f8300f9f3aa291a39f23a29b35c58 [INFO] running `Command { std: "docker" "start" "-a" "b4e8b725347e3e3d32a5f4a774ffd7f0500f8300f9f3aa291a39f23a29b35c58", kill_on_drop: false }` [INFO] [stderr] Compiling crossbeam-utils v0.8.5 [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Compiling crossbeam-epoch v0.9.5 [INFO] [stderr] Compiling futures-task v0.3.19 [INFO] [stderr] Compiling futures-core v0.3.19 [INFO] [stderr] Compiling futures-util v0.3.19 [INFO] [stderr] Compiling crossbeam-queue v0.3.2 [INFO] [stderr] Checking slab v0.4.5 [INFO] [stderr] Compiling memoffset v0.6.5 [INFO] [stderr] Checking crossbeam-channel v0.5.1 [INFO] [stderr] Checking lightproc v0.3.6-alpha.0 (/opt/rustwide/workdir) [INFO] [stdout] error: this value of type `MutexGuard<'_, S>` has significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/proc_stack.rs:183:10 [INFO] [stdout] | [INFO] [stdout] 181 | let state = self.state.clone(); [INFO] [stdout] | ----- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] 182 | let s = unsafe { &*(&state as *const ProcState as *const Arc>) }; [INFO] [stdout] 183 | *s.lock().unwrap() [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 `lightproc` (lib) due to 2 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "b4e8b725347e3e3d32a5f4a774ffd7f0500f8300f9f3aa291a39f23a29b35c58", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b4e8b725347e3e3d32a5f4a774ffd7f0500f8300f9f3aa291a39f23a29b35c58", kill_on_drop: false }` [INFO] [stdout] b4e8b725347e3e3d32a5f4a774ffd7f0500f8300f9f3aa291a39f23a29b35c58