[INFO] fetching crate mqtt-procmacro 1.0.0...
[INFO] checking mqtt-procmacro-1.0.0 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate mqtt-procmacro 1.0.0 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate mqtt-procmacro 1.0.0 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 mqtt-procmacro 1.0.0
[INFO] finished tweaking crates.io crate mqtt-procmacro 1.0.0
[INFO] tweaked toml for crates.io crate mqtt-procmacro 1.0.0 written to /workspace/builds/worker-4-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] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 16 packages to latest compatible versions
[INFO] [stderr]       Adding proc-macro-crate v1.3.1 (available: v3.2.0)
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.77)
[INFO] [stderr]       Adding toml_edit v0.19.15 (available: v0.22.22)
[INFO] [stderr]       Adding winnow v0.5.40 (available: v0.6.20)
[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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 96c816cf63b800019e4dcf5200debc6c3056fb04f1b6faeb4f8268bb7ffd8d1d
[INFO] running `Command { std: "docker" "start" "-a" "96c816cf63b800019e4dcf5200debc6c3056fb04f1b6faeb4f8268bb7ffd8d1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "96c816cf63b800019e4dcf5200debc6c3056fb04f1b6faeb4f8268bb7ffd8d1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96c816cf63b800019e4dcf5200debc6c3056fb04f1b6faeb4f8268bb7ffd8d1d", kill_on_drop: false }`
[INFO] [stdout] 96c816cf63b800019e4dcf5200debc6c3056fb04f1b6faeb4f8268bb7ffd8d1d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 31d2df660836e5b319f2fff9be4ad4a46705ffc1849e3070ea16ad5e2debce29
[INFO] running `Command { std: "docker" "start" "-a" "31d2df660836e5b319f2fff9be4ad4a46705ffc1849e3070ea16ad5e2debce29", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-ident v1.0.13
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking equivalent v1.0.1
[INFO] [stderr]     Checking hashbrown v0.14.5
[INFO] [stderr]     Checking toml_datetime v0.6.8
[INFO] [stderr]     Checking winnow v0.5.40
[INFO] [stderr]     Checking once_cell v1.19.0
[INFO] [stderr]     Checking proc-macro2 v1.0.86
[INFO] [stderr]     Checking quote v1.0.37
[INFO] [stderr]     Checking indexmap v2.5.0
[INFO] [stderr]     Checking toml_edit v0.19.15
[INFO] [stderr]     Checking proc-macro-crate v1.3.1
[INFO] [stderr]     Checking proc-macro-error v1.0.4
[INFO] [stderr]     Checking mqtt-procmacro v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this value of type `syn::punctuated::Iter<'_, NestedMeta>` has significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/lib.rs:239:9
[INFO] [stdout]     |
[INFO] [stdout] 238 |       get_attribute_list(attribute).map(|list| {
[INFO] [stdout]     |                                          ---- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024
[INFO] [stdout] 239 | /         list.nested
[INFO] [stdout] 240 | |             .iter()
[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: this value of type `syn::punctuated::Iter<'_, NestedMeta>` has significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/lib.rs:239:9
[INFO] [stdout]     |
[INFO] [stdout] 238 |       get_attribute_list(attribute).map(|list| {
[INFO] [stdout]     |                                          ---- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024
[INFO] [stdout] 239 | /         list.nested
[INFO] [stdout] 240 | |             .iter()
[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] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mqtt-procmacro` (lib test) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `mqtt-procmacro` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "31d2df660836e5b319f2fff9be4ad4a46705ffc1849e3070ea16ad5e2debce29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31d2df660836e5b319f2fff9be4ad4a46705ffc1849e3070ea16ad5e2debce29", kill_on_drop: false }`
[INFO] [stdout] 31d2df660836e5b319f2fff9be4ad4a46705ffc1849e3070ea16ad5e2debce29