[INFO] fetching crate cura 0.8.0... [INFO] checking cura-0.8.0 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864 [INFO] extracting crate cura 0.8.0 into /workspace/builds/worker-5-tc2/source [INFO] validating manifest of crates.io crate cura 0.8.0 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 cura 0.8.0 [INFO] finished tweaking crates.io crate cura 0.8.0 [INFO] tweaked toml for crates.io crate cura 0.8.0 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] 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-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] c7f5a81111ea65b8be418e766161380a247c6559c0bc7cccf536ddafa0ab3e7d [INFO] running `Command { std: "docker" "start" "-a" "c7f5a81111ea65b8be418e766161380a247c6559c0bc7cccf536ddafa0ab3e7d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c7f5a81111ea65b8be418e766161380a247c6559c0bc7cccf536ddafa0ab3e7d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c7f5a81111ea65b8be418e766161380a247c6559c0bc7cccf536ddafa0ab3e7d", kill_on_drop: false }` [INFO] [stdout] c7f5a81111ea65b8be418e766161380a247c6559c0bc7cccf536ddafa0ab3e7d [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] 74a1421b3cc0f6ef12537d45f65d0e2f23144e6041e7ca12ea41c8be10ea687d [INFO] running `Command { std: "docker" "start" "-a" "74a1421b3cc0f6ef12537d45f65d0e2f23144e6041e7ca12ea41c8be10ea687d", kill_on_drop: false }` [INFO] [stderr] Checking cura v0.8.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unnecessary trailing semicolon [INFO] [stdout] --> src/lib.rs:849:26 [INFO] [stdout] | [INFO] [stdout] 849 | impl Foo for FF{}; [INFO] [stdout] | ^ help: remove this semicolon [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(redundant_semicolons)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `current_time` is never used [INFO] [stdout] --> src/lib.rs:626:4 [INFO] [stdout] | [INFO] [stdout] 626 | fn current_time()->u128{ [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `sleep` is never used [INFO] [stdout] --> src/lib.rs:635:4 [INFO] [stdout] | [INFO] [stdout] 635 | fn sleep(millis:u32){ [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/lib.rs:781:13 [INFO] [stdout] | [INFO] [stdout] 781 | let f=Bar{tt:tt}; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `t` [INFO] [stdout] --> src/lib.rs:754:20 [INFO] [stdout] | [INFO] [stdout] 754 | fn test(t:T) [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this value of type `ReadGuard<'_, dyn tests::loop_a_lot_box::Foo>` has significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/lib.rs:855:19 [INFO] [stdout] | [INFO] [stdout] 851 | let s:Cura=Cura::from_box(t); [INFO] [stdout] | - these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 855 | match {s.read()}.get().clone() { [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: function `current_time` is never used [INFO] [stdout] --> src/lib.rs:626:4 [INFO] [stdout] | [INFO] [stdout] 626 | fn current_time()->u128{ [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `id` is never read [INFO] [stdout] --> src/lib.rs:684:13 [INFO] [stdout] | [INFO] [stdout] 683 | struct Foo{ [INFO] [stdout] | --- field in this struct [INFO] [stdout] 684 | id:u16, [INFO] [stdout] | ^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `testing` and `id` are never used [INFO] [stdout] --> src/lib.rs:690:20 [INFO] [stdout] | [INFO] [stdout] 686 | impl Foo { [INFO] [stdout] | -------- methods in this implementation [INFO] [stdout] ... [INFO] [stdout] 690 | pub fn testing(&mut self,id:u16) { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 693 | pub fn id(&self)->u16 [INFO] [stdout] | ^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `EE` is never used [INFO] [stdout] --> src/lib.rs:759:14 [INFO] [stdout] | [INFO] [stdout] 759 | enum EE [INFO] [stdout] | ^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `get` is never used [INFO] [stdout] --> src/lib.rs:766:16 [INFO] [stdout] | [INFO] [stdout] 764 | trait Foo:Send+Sync [INFO] [stdout] | --- method in this trait [INFO] [stdout] 765 | { [INFO] [stdout] 766 | fn get(&self)->EE [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `tt` is never read [INFO] [stdout] --> src/lib.rs:779:13 [INFO] [stdout] | [INFO] [stdout] 777 | struct Bar [INFO] [stdout] | --- field in this struct [INFO] [stdout] 778 | { [INFO] [stdout] 779 | tt:Cura, [INFO] [stdout] | ^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `Bong` is never constructed [INFO] [stdout] --> src/lib.rs:817:13 [INFO] [stdout] | [INFO] [stdout] 814 | enum Foo [INFO] [stdout] | --- variant in this enum [INFO] [stdout] ... [INFO] [stdout] 817 | Bong, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Foo` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `Bong` is never constructed [INFO] [stdout] --> src/lib.rs:839:13 [INFO] [stdout] | [INFO] [stdout] 836 | enum EE [INFO] [stdout] | -- variant in this enum [INFO] [stdout] ... [INFO] [stdout] 839 | Bong, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `EE` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error; 11 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `cura` (lib test) due to 2 previous errors; 11 warnings emitted [INFO] running `Command { std: "docker" "inspect" "74a1421b3cc0f6ef12537d45f65d0e2f23144e6041e7ca12ea41c8be10ea687d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "74a1421b3cc0f6ef12537d45f65d0e2f23144e6041e7ca12ea41c8be10ea687d", kill_on_drop: false }` [INFO] [stdout] 74a1421b3cc0f6ef12537d45f65d0e2f23144e6041e7ca12ea41c8be10ea687d