[INFO] fetching crate optimal-core 0.0.0...
[INFO] checking optimal-core-0.0.0 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] extracting crate optimal-core 0.0.0 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate optimal-core 0.0.0 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 optimal-core 0.0.0
[INFO] finished tweaking crates.io crate optimal-core 0.0.0
[INFO] tweaked toml for crates.io crate optimal-core 0.0.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 15 packages to latest compatible versions
[INFO] [stderr]       Adding blanket v0.3.0 (available: v0.4.0)
[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] bbc524923f6bbcf7e9a20743ed65404b2374657241a523301b71cc812b6aecc6
[INFO] running `Command { std: "docker" "start" "-a" "bbc524923f6bbcf7e9a20743ed65404b2374657241a523301b71cc812b6aecc6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bbc524923f6bbcf7e9a20743ed65404b2374657241a523301b71cc812b6aecc6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bbc524923f6bbcf7e9a20743ed65404b2374657241a523301b71cc812b6aecc6", kill_on_drop: false }`
[INFO] [stdout] bbc524923f6bbcf7e9a20743ed65404b2374657241a523301b71cc812b6aecc6
[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] 54ac94f933bf568f9e0c5b81386dfc75975f466a05f5415022c8148b3e92ec15
[INFO] running `Command { std: "docker" "start" "-a" "54ac94f933bf568f9e0c5b81386dfc75975f466a05f5415022c8148b3e92ec15", kill_on_drop: false }`
[INFO] [stderr]    Compiling paste v1.0.15
[INFO] [stderr]     Checking streaming-iterator v0.1.9
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]     Checking replace_with v0.1.7
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]    Compiling syn v2.0.79
[INFO] [stderr]    Compiling serde_derive v1.0.210
[INFO] [stderr]    Compiling blanket v0.3.0
[INFO] [stderr]     Checking optimal-core v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking serde v1.0.210
[INFO] [stderr]     Checking serde_json v1.0.128
[INFO] [stdout] error: this value of type `(B, usize)` has significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/lib.rs:201:13
[INFO] [stdout]     |
[INFO] [stdout] 195 |           fn best_optimizer<A, B, F, I>(obj_func: F, optimizers: I) -> usize
[INFO] [stdout]     |                                         -------- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 201 | /             optimizers
[INFO] [stdout] 202 | |                 .into_iter()
[INFO] [stdout] 203 | |                 .enumerate()
[INFO] [stdout] 204 | |                 .map(|(i, mut o)| {
[INFO] [stdout] ...   |
[INFO] [stdout] 208 | |                 .min()
[INFO] [stdout] 209 | |                 .expect("`optimizers` should be non-empty")
[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 `optimal-core` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "54ac94f933bf568f9e0c5b81386dfc75975f466a05f5415022c8148b3e92ec15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54ac94f933bf568f9e0c5b81386dfc75975f466a05f5415022c8148b3e92ec15", kill_on_drop: false }`
[INFO] [stdout] 54ac94f933bf568f9e0c5b81386dfc75975f466a05f5415022c8148b3e92ec15