[INFO] fetching crate fibers 0.1.13... [INFO] checking fibers-0.1.13 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930 [INFO] extracting crate fibers 0.1.13 into /workspace/builds/worker-7-tc2/source [INFO] validating manifest of crates.io crate fibers 0.1.13 on toolchain c387b04bf028733cd561d62128c8a5eee4bc1458 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate fibers 0.1.13 [INFO] finished tweaking crates.io crate fibers 0.1.13 [INFO] tweaked toml for crates.io crate fibers 0.1.13 written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] crate crates.io crate fibers 0.1.13 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" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "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] [stderr] Blocking waiting for file lock on package cache [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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] f58308c5e68a870291e44bf52238a7042620404279d9542146467b4240924261 [INFO] running `Command { std: "docker" "start" "-a" "f58308c5e68a870291e44bf52238a7042620404279d9542146467b4240924261", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "f58308c5e68a870291e44bf52238a7042620404279d9542146467b4240924261", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f58308c5e68a870291e44bf52238a7042620404279d9542146467b4240924261", kill_on_drop: false }` [INFO] [stdout] f58308c5e68a870291e44bf52238a7042620404279d9542146467b4240924261 [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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] b602f852071f9f6501cf8f5e16113ab9b6ae75bec71e44a88afac5f1a8975b63 [INFO] running `Command { std: "docker" "start" "-a" "b602f852071f9f6501cf8f5e16113ab9b6ae75bec71e44a88afac5f1a8975b63", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021 [INFO] [stderr] Compiling byteorder v1.3.2 [INFO] [stderr] Compiling httparse v1.3.4 [INFO] [stderr] Checking slab v0.4.2 [INFO] [stderr] Checking futures v0.1.29 [INFO] [stderr] Checking splay_tree v0.2.10 [INFO] [stderr] Checking vec_map v0.8.1 [INFO] [stderr] Checking nbchan v0.1.3 [INFO] [stderr] Checking iovec v0.1.4 [INFO] [stderr] Checking net2 v0.2.33 [INFO] [stderr] Checking num_cpus v1.11.1 [INFO] [stderr] Checking clap v2.33.0 [INFO] [stderr] Checking mio v0.6.19 [INFO] [stderr] Checking handy_async v0.2.13 [INFO] [stderr] Checking fibers v0.1.13 (/opt/rustwide/workdir) [INFO] [stdout] error: this value of type `Async>>` has significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/net/tcp.rs:188:39 [INFO] [stdout] | [INFO] [stdout] 187 | let mut future = self.0.take().expect("Cannot poll Connected twice"); [INFO] [stdout] | ---------- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] 188 | if let Async::Ready(handle) = future.poll().map_err(into_io_error)? { [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: field `pollers` is never read [INFO] [stdout] --> src/executor/thread_pool.rs:48:5 [INFO] [stdout] | [INFO] [stdout] 46 | pub struct ThreadPoolExecutor { [INFO] [stdout] | ------------------ field in this struct [INFO] [stdout] 47 | pool: SchedulerPool, [INFO] [stdout] 48 | pollers: PollerPool, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `ThreadPoolExecutor` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `links` is never read [INFO] [stdout] --> src/executor/thread_pool.rs:144:5 [INFO] [stdout] | [INFO] [stdout] 142 | struct PollerPool { [INFO] [stdout] | ---------- field in this struct [INFO] [stdout] 143 | pollers: Vec, [INFO] [stdout] 144 | links: Vec>, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `PollerPool` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: creating a shared reference to mutable static is discouraged [INFO] [stdout] --> src/fiber/schedule.rs:54:36 [INFO] [stdout] | [INFO] [stdout] 54 | scheduler_id: unsafe { NEXT_SCHEDULER_ID.fetch_add(1, atomic::Ordering::SeqCst) }, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ shared reference to mutable static [INFO] [stdout] | [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives [INFO] [stdout] = note: `#[warn(static_mut_refs)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error; 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `fibers` (lib) due to 2 previous errors; 3 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "b602f852071f9f6501cf8f5e16113ab9b6ae75bec71e44a88afac5f1a8975b63", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b602f852071f9f6501cf8f5e16113ab9b6ae75bec71e44a88afac5f1a8975b63", kill_on_drop: false }` [INFO] [stdout] b602f852071f9f6501cf8f5e16113ab9b6ae75bec71e44a88afac5f1a8975b63