[INFO] fetching crate mfio 0.1.0... [INFO] checking mfio-0.1.0 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930 [INFO] extracting crate mfio 0.1.0 into /workspace/builds/worker-1-tc2/source [INFO] validating manifest of crates.io crate mfio 0.1.0 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 mfio 0.1.0 [INFO] finished tweaking crates.io crate mfio 0.1.0 [INFO] tweaked toml for crates.io crate mfio 0.1.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml [INFO] crate crates.io crate mfio 0.1.0 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" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] fa3c2ffa2441684f64e174d5f8506ca3b9ba7821c93cf7d127469126aa825206 [INFO] running `Command { std: "docker" "start" "-a" "fa3c2ffa2441684f64e174d5f8506ca3b9ba7821c93cf7d127469126aa825206", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "fa3c2ffa2441684f64e174d5f8506ca3b9ba7821c93cf7d127469126aa825206", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "fa3c2ffa2441684f64e174d5f8506ca3b9ba7821c93cf7d127469126aa825206", kill_on_drop: false }` [INFO] [stdout] fa3c2ffa2441684f64e174d5f8506ca3b9ba7821c93cf7d127469126aa825206 [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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 1a1ebce346de837486b6aaa202a56f706175e9c0455c80f6890bb7252f4528e0 [INFO] running `Command { std: "docker" "start" "-a" "1a1ebce346de837486b6aaa202a56f706175e9c0455c80f6890bb7252f4528e0", kill_on_drop: false }` [INFO] [stderr] Checking pin-project-lite v0.2.13 [INFO] [stderr] Compiling crossbeam-utils v0.8.16 [INFO] [stderr] Compiling proc-macro2 v1.0.70 [INFO] [stderr] Compiling futures-core v0.3.29 [INFO] [stderr] Compiling libc v0.2.150 [INFO] [stderr] Checking parking v2.2.0 [INFO] [stderr] Checking futures-io v0.3.29 [INFO] [stderr] Compiling slab v0.4.9 [INFO] [stderr] Checking memchr v2.6.4 [INFO] [stderr] Checking tracing v0.1.40 [INFO] [stderr] Compiling rustix v0.38.26 [INFO] [stderr] Checking futures-lite v2.1.0 [INFO] [stderr] Compiling io-lifetimes v1.0.11 [INFO] [stderr] Checking bitflags v2.4.1 [INFO] [stderr] Checking concurrent-queue v2.4.0 [INFO] [stderr] Checking linux-raw-sys v0.4.12 [INFO] [stderr] Compiling memoffset v0.9.0 [INFO] [stderr] Compiling polling v2.8.0 [INFO] [stderr] Checking event-listener v4.0.0 [INFO] [stderr] Checking log v0.4.20 [INFO] [stderr] Compiling hashbrown v0.14.3 [INFO] [stderr] Compiling futures-task v0.3.29 [INFO] [stderr] Compiling quote v1.0.33 [INFO] [stderr] Compiling futures-channel v0.3.29 [INFO] [stderr] Checking event-listener-strategy v0.4.0 [INFO] [stderr] Checking waker-fn v1.1.1 [INFO] [stderr] Compiling semver v1.0.20 [INFO] [stderr] Checking fastrand v2.0.1 [INFO] [stderr] Checking async-lock v3.2.0 [INFO] [stderr] Compiling syn v2.0.39 [INFO] [stderr] Compiling rustix v0.37.27 [INFO] [stderr] Checking futures-lite v1.13.0 [INFO] [stderr] Compiling crossbeam-epoch v0.9.15 [INFO] [stderr] Compiling async-io v1.13.0 [INFO] [stderr] Checking futures-sink v0.3.29 [INFO] [stderr] Compiling futures-util v0.3.29 [INFO] [stderr] Compiling winnow v0.5.25 [INFO] [stderr] Checking async-task v4.5.0 [INFO] [stderr] Compiling toml_datetime v0.6.5 [INFO] [stderr] Compiling indexmap v2.1.0 [INFO] [stderr] Checking linux-raw-sys v0.3.8 [INFO] [stderr] Compiling serde v1.0.193 [INFO] [stderr] Checking piper v0.2.1 [INFO] [stderr] Checking socket2 v0.4.10 [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Checking 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v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unexpected `cfg` condition name: `mfio_assume_linear_types` [INFO] [stdout] --> src/lib.rs:217:11 [INFO] [stdout] | [INFO] [stdout] 217 | #[cfg(not(mfio_assume_linear_types))] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: expected names are: `clippy`, `debug_assertions`, `doc`, `docsrs`, `doctest`, `feature`, `fmt_debug`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `rustfmt`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `ub_checks`, `unix`, and `windows` [INFO] [stdout] = help: consider using a Cargo feature instead [INFO] [stdout] = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint: [INFO] [stdout] [lints.rust] [INFO] [stdout] unexpected_cfgs = { level = "warn", check-cfg = ['cfg(mfio_assume_linear_types)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(mfio_assume_linear_types)");` to the top of the `build.rs` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] = note: `#[warn(unexpected_cfgs)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unexpected `cfg` condition name: `mfio_assume_linear_types` [INFO] [stdout] --> src/lib.rs:230:7 [INFO] [stdout] | [INFO] [stdout] 230 | #[cfg(mfio_assume_linear_types)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: consider using a Cargo feature instead [INFO] [stdout] = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint: [INFO] [stdout] [lints.rust] [INFO] [stdout] unexpected_cfgs = { level = "warn", check-cfg = ['cfg(mfio_assume_linear_types)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(mfio_assume_linear_types)");` to the top of the `build.rs` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unexpected `cfg` condition name: `mfio_assume_linear_types` [INFO] [stdout] --> src/futures_compat.rs:9:11 [INFO] [stdout] | [INFO] [stdout] 9 | #[cfg(not(mfio_assume_linear_types))] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: consider using a Cargo feature instead [INFO] [stdout] = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint: [INFO] [stdout] [lints.rust] [INFO] [stdout] unexpected_cfgs = { level = "warn", check-cfg = ['cfg(mfio_assume_linear_types)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(mfio_assume_linear_types)");` to the top of the `build.rs` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unexpected `cfg` condition name: `mfio_assume_linear_types` [INFO] [stdout] --> src/futures_compat.rs:117:11 [INFO] [stdout] | [INFO] [stdout] 117 | #[cfg(not(mfio_assume_linear_types))] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: consider using a Cargo feature instead [INFO] [stdout] = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint: [INFO] [stdout] [lints.rust] [INFO] [stdout] unexpected_cfgs = { level = "warn", check-cfg = ['cfg(mfio_assume_linear_types)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(mfio_assume_linear_types)");` to the top of the `build.rs` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unexpected `cfg` condition name: `mfio_assume_linear_types` [INFO] [stdout] --> src/futures_compat.rs:28:15 [INFO] [stdout] | [INFO] [stdout] 28 | #[cfg(not(mfio_assume_linear_types))] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: consider using a Cargo feature instead [INFO] [stdout] = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint: [INFO] [stdout] [lints.rust] [INFO] [stdout] unexpected_cfgs = { level = "warn", check-cfg = ['cfg(mfio_assume_linear_types)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(mfio_assume_linear_types)");` to the top of the `build.rs` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unexpected `cfg` condition name: `mfio_assume_linear_types` [INFO] [stdout] --> src/futures_compat.rs:104:23 [INFO] [stdout] | [INFO] [stdout] 104 | #[cfg(not(mfio_assume_linear_types))] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: consider using a Cargo feature instead [INFO] [stdout] = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint: [INFO] [stdout] [lints.rust] [INFO] [stdout] unexpected_cfgs = { level = "warn", check-cfg = ['cfg(mfio_assume_linear_types)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(mfio_assume_linear_types)");` to the top of the `build.rs` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unexpected `cfg` condition name: `mfio_assume_linear_types` [INFO] [stdout] --> src/io/packet/mod.rs:438:7 [INFO] [stdout] | [INFO] [stdout] 438 | #[cfg(mfio_assume_linear_types)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: consider using a Cargo feature instead [INFO] [stdout] = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint: [INFO] [stdout] [lints.rust] [INFO] [stdout] unexpected_cfgs = { level = "warn", check-cfg = ['cfg(mfio_assume_linear_types)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(mfio_assume_linear_types)");` to the top of the `build.rs` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unexpected `cfg` condition name: `mfio_assume_linear_types` [INFO] [stdout] --> src/io/packet/mod.rs:456:7 [INFO] [stdout] | [INFO] [stdout] 456 | #[cfg(mfio_assume_linear_types)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: consider using a Cargo feature instead [INFO] [stdout] = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint: [INFO] [stdout] [lints.rust] [INFO] [stdout] unexpected_cfgs = { level = "warn", check-cfg = ['cfg(mfio_assume_linear_types)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(mfio_assume_linear_types)");` to the top of the `build.rs` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unexpected `cfg` condition name: `mfio_assume_linear_types` [INFO] [stdout] --> src/io/packet/mod.rs:474:7 [INFO] [stdout] | [INFO] [stdout] 474 | #[cfg(mfio_assume_linear_types)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: consider using a Cargo feature instead [INFO] [stdout] = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint: [INFO] [stdout] [lints.rust] [INFO] [stdout] unexpected_cfgs = { level = "warn", check-cfg = ['cfg(mfio_assume_linear_types)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(mfio_assume_linear_types)");` to the top of the `build.rs` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: elided lifetime has a name [INFO] [stdout] --> src/io/mod.rs:244:57 [INFO] [stdout] | [INFO] [stdout] 239 | fn io_to_stream<'a, T: PacketStore<'a, Perms> + 'a, O: PushPop> + 'a>( [INFO] [stdout] | -- lifetime `'a` declared here [INFO] [stdout] ... [INFO] [stdout] 244 | ) -> IoToFut<'a, Self, Perms, Param, T, PacketStream> { [INFO] [stdout] | ^ this elided lifetime gets resolved as `'a` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(elided_named_lifetimes)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this value of type `std::option::Option<(view::PacketView<'_, Perms>, std::option::Option)>` has significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/io/packet/output.rs:412:35 [INFO] [stdout] | [INFO] [stdout] 410 | let mut guard = this.lock(); [INFO] [stdout] | --------- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] 411 | [INFO] [stdout] 412 | if let Some((pkt, err)) = guard.data().pop() { [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: method `add_assign` is never used [INFO] [stdout] --> src/util.rs:4:8 [INFO] [stdout] | [INFO] [stdout] 3 | pub(crate) trait UsizeMath { [INFO] [stdout] | --------- method in this trait [INFO] [stdout] 4 | fn add_assign(&mut self, val: usize); [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `add_pos` is never used [INFO] [stdout] --> src/util.rs:43:8 [INFO] [stdout] | [INFO] [stdout] 42 | pub(crate) trait PosShift: CopyPos + UsizeMath { [INFO] [stdout] | -------- method in this trait [INFO] [stdout] 43 | fn add_pos(&mut self, out: usize, io: &Io); [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error; 12 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `mfio` (lib) due to 2 previous errors; 12 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "1a1ebce346de837486b6aaa202a56f706175e9c0455c80f6890bb7252f4528e0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1a1ebce346de837486b6aaa202a56f706175e9c0455c80f6890bb7252f4528e0", kill_on_drop: false }` [INFO] [stdout] 1a1ebce346de837486b6aaa202a56f706175e9c0455c80f6890bb7252f4528e0