[INFO] fetching crate wybr 0.0.5... [INFO] checking wybr-0.0.5 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864 [INFO] extracting crate wybr 0.0.5 into /workspace/builds/worker-7-tc2/source [INFO] validating manifest of crates.io crate wybr 0.0.5 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 wybr 0.0.5 [INFO] finished tweaking crates.io crate wybr 0.0.5 [INFO] tweaked toml for crates.io crate wybr 0.0.5 written to /workspace/builds/worker-7-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-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 5abe0b10edf59336d6a2da760639a1cdc85c72c99b594b887b1989ecbe7b885f [INFO] running `Command { std: "docker" "start" "-a" "5abe0b10edf59336d6a2da760639a1cdc85c72c99b594b887b1989ecbe7b885f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "5abe0b10edf59336d6a2da760639a1cdc85c72c99b594b887b1989ecbe7b885f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5abe0b10edf59336d6a2da760639a1cdc85c72c99b594b887b1989ecbe7b885f", kill_on_drop: false }` [INFO] [stdout] 5abe0b10edf59336d6a2da760639a1cdc85c72c99b594b887b1989ecbe7b885f [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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] f46aaffc67a1a301a2464d0ef897476600283b719ab7c5ca02708973f8b2f396 [INFO] running `Command { std: "docker" "start" "-a" "f46aaffc67a1a301a2464d0ef897476600283b719ab7c5ca02708973f8b2f396", kill_on_drop: false }` [INFO] [stderr] Checking wybr v0.0.5 (/opt/rustwide/workdir) [INFO] [stdout] error: this value of type `Option` has significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/io/blt_reader.rs:256:15 [INFO] [stdout] | [INFO] [stdout] 255 | let mut blt_reader = BltReader::new(&mut cursor); [INFO] [stdout] | -------------- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] 256 | match blt_reader.next() { [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: this value of type `borda::Borda<'_>` has significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/methods/borda.rs:310:15 [INFO] [stdout] | [INFO] [stdout] 309 | let x = [].iter().collect(); [INFO] [stdout] | - these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] 310 | match Borda::new(&x).run().unwrap_err() { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this value of type `irv::Irv<'_>` has significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/methods/irv.rs:159:15 [INFO] [stdout] | [INFO] [stdout] 158 | let x = [].iter().collect(); [INFO] [stdout] | - these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] 159 | match Irv::new(&x).run().unwrap_err() { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this value of type `nanson::Nanson<'_>` has significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/methods/nanson.rs:216:15 [INFO] [stdout] | [INFO] [stdout] 215 | let x = [].iter().collect(); [INFO] [stdout] | - these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] 216 | match Nanson::new(&x).run().unwrap_err() { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `must_use` that must be used [INFO] [stdout] --> src/tally.rs:178:9 [INFO] [stdout] | [INFO] [stdout] 178 | format!("{:?}", x); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this warning originates in the macro `format` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 4 previous errors; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `wybr` (lib test) due to 5 previous errors; 1 warning emitted [INFO] running `Command { std: "docker" "inspect" "f46aaffc67a1a301a2464d0ef897476600283b719ab7c5ca02708973f8b2f396", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f46aaffc67a1a301a2464d0ef897476600283b719ab7c5ca02708973f8b2f396", kill_on_drop: false }` [INFO] [stdout] f46aaffc67a1a301a2464d0ef897476600283b719ab7c5ca02708973f8b2f396