[INFO] fetching crate vhost-user-backend 0.16.0...
[INFO] checking vhost-user-backend-0.16.0 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate vhost-user-backend 0.16.0 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate vhost-user-backend 0.16.0 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 vhost-user-backend 0.16.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate vhost-user-backend 0.16.0
[INFO] tweaked toml for crates.io crate vhost-user-backend 0.16.0 written to /workspace/builds/worker-5-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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 71 packages to latest compatible versions
[INFO] [stderr]       Adding bindgen v0.68.1 (available: v0.70.1)
[INFO] [stderr]       Adding bitflags v1.3.2 (available: v2.6.0)
[INFO] [stderr]       Adding linux-raw-sys v0.4.14 (available: v0.6.5)
[INFO] [stderr]       Adding nix v0.27.1 (available: v0.29.0)
[INFO] [stderr]       Adding peeking_take_while v0.1.2 (available: v1.0.0)
[INFO] [stderr]       Adding rustc-hash v1.1.0 (available: v2.0.0)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (available: v0.13.2+wasi-0.2.1)
[INFO] [stderr]       Adding windows-sys v0.52.0 (available: v0.59.0)
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 43d71ebac1f9d44e81e3435b9748caa936d13bcb7ce333c72bf7264bca28098d
[INFO] running `Command { std: "docker" "start" "-a" "43d71ebac1f9d44e81e3435b9748caa936d13bcb7ce333c72bf7264bca28098d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "43d71ebac1f9d44e81e3435b9748caa936d13bcb7ce333c72bf7264bca28098d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43d71ebac1f9d44e81e3435b9748caa936d13bcb7ce333c72bf7264bca28098d", kill_on_drop: false }`
[INFO] [stdout] 43d71ebac1f9d44e81e3435b9748caa936d13bcb7ce333c72bf7264bca28098d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] b3c64b515447bc65dd22ccca7a0403c40af955928c27f9d96ade7de2f2c871b2
[INFO] running `Command { std: "docker" "start" "-a" "b3c64b515447bc65dd22ccca7a0403c40af955928c27f9d96ade7de2f2c871b2", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling libc v0.2.159
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking bitflags v2.6.0
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]    Compiling cfg_aliases v0.2.1
[INFO] [stderr]    Compiling rustix v0.38.37
[INFO] [stderr]     Checking log v0.4.22
[INFO] [stderr]     Checking linux-raw-sys v0.4.14
[INFO] [stderr]     Checking virtio-bindings v0.2.3
[INFO] [stderr]     Checking fastrand v2.1.1
[INFO] [stderr]     Checking once_cell v1.19.0
[INFO] [stderr]    Compiling nix v0.29.0
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking vmm-sys-util v0.12.1
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking tempfile v3.12.0
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]    Compiling thiserror-impl v1.0.64
[INFO] [stderr]    Compiling uuid-macro-internal v1.10.0
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]     Checking thiserror v1.0.64
[INFO] [stderr]     Checking vm-memory v0.15.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stderr]     Checking virtio-queue v0.13.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking uuid v1.10.0
[INFO] [stderr]     Checking vhost v0.12.0
[INFO] [stderr]     Checking vhost-user-backend v0.16.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this value of type `vmm_sys_util::eventfd::EventFd` has significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/lib.rs:367:17
[INFO] [stdout]     |
[INFO] [stdout] 332 |         let backend = Arc::new(Mutex::new(MockVhostBackend::new()));
[INFO] [stdout]     |             ------- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024
[INFO] [stdout] 333 |         let mut daemon = VhostUserDaemon::new("test".to_owned(), backend.clone(), mem).unwrap();
[INFO] [stdout]     |             ---------- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024
[INFO] [stdout] 334 |         let tmpdir = tempfile::tempdir().unwrap();
[INFO] [stdout]     |             ------ these local bindings with significant drop implementation may observe changes in drop order under Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 365 |         let backend = backend.lock().unwrap();
[INFO] [stdout]     |             ------- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024
[INFO] [stdout] 366 |         for thread_id in 0..backend.queues_per_thread().len() {
[INFO] [stdout] 367 |             let fd = backend.exit_event(thread_id).unwrap();
[INFO] [stdout]     |                 ^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/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 `vhost-user-backend` (lib test) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "b3c64b515447bc65dd22ccca7a0403c40af955928c27f9d96ade7de2f2c871b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3c64b515447bc65dd22ccca7a0403c40af955928c27f9d96ade7de2f2c871b2", kill_on_drop: false }`
[INFO] [stdout] b3c64b515447bc65dd22ccca7a0403c40af955928c27f9d96ade7de2f2c871b2