[INFO] fetching crate mcap 0.9.2...
[INFO] checking mcap-0.9.2 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate mcap 0.9.2 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate mcap 0.9.2 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 mcap 0.9.2
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate mcap 0.9.2
[INFO] tweaked toml for crates.io crate mcap 0.9.2 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate crates.io crate mcap 0.9.2 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" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ac33e02fd6ad710d74be24a4b858ae9afeada02763f2a2685501db657e3bb02c
[INFO] running `Command { std: "docker" "start" "-a" "ac33e02fd6ad710d74be24a4b858ae9afeada02763f2a2685501db657e3bb02c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ac33e02fd6ad710d74be24a4b858ae9afeada02763f2a2685501db657e3bb02c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac33e02fd6ad710d74be24a4b858ae9afeada02763f2a2685501db657e3bb02c", kill_on_drop: false }`
[INFO] [stdout] ac33e02fd6ad710d74be24a4b858ae9afeada02763f2a2685501db657e3bb02c
[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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f2c4403cd19b6918605fd6384c0ffaa06604e56e3f4bebd5e47881b4d74ad4b7
[INFO] running `Command { std: "docker" "start" "-a" "f2c4403cd19b6918605fd6384c0ffaa06604e56e3f4bebd5e47881b4d74ad4b7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling serde v1.0.207
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling cc v1.1.10
[INFO] [stderr]    Compiling binrw_derive v0.12.0
[INFO] [stderr]    Compiling zstd-safe v5.0.2+zstd.1.5.2
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling owo-colors v3.5.0
[INFO] [stderr]    Compiling binrw v0.12.0
[INFO] [stderr]    Compiling either v1.13.0
[INFO] [stderr]     Checking plotters-backend v0.3.6
[INFO] [stderr]     Checking twox-hash v1.6.3
[INFO] [stderr]     Checking clap_builder v4.5.15
[INFO] [stderr]    Compiling camino v1.1.7
[INFO] [stderr]     Checking array-init v2.1.0
[INFO] [stderr]     Checking os_str_bytes v6.6.1
[INFO] [stderr]     Checking bytemuck v1.16.3
[INFO] [stderr]     Checking plotters-svg v0.3.6
[INFO] [stderr]     Checking lz4_flex v0.11.3
[INFO] [stderr]     Checking clap_lex v0.2.4
[INFO] [stderr]     Checking time v0.3.36
[INFO] [stderr]     Checking plotters v0.3.6
[INFO] [stderr]     Checking rustix v0.38.34
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling syn v2.0.74
[INFO] [stderr]     Checking is-terminal v0.4.12
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking textwrap v0.16.1
[INFO] [stderr]     Checking simplelog v0.12.2
[INFO] [stderr]     Checking clap v4.5.15
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]    Compiling zstd-sys v2.0.13+zstd.1.5.6
[INFO] [stderr]     Checking tempfile v3.12.0
[INFO] [stderr]    Compiling darling_core v0.20.10
[INFO] [stderr]    Compiling serde_derive v1.0.207
[INFO] [stderr]    Compiling thiserror-impl v1.0.63
[INFO] [stderr]     Checking zstd v0.11.2+zstd.1.5.2
[INFO] [stderr]    Compiling clap_derive v3.2.25
[INFO] [stderr]     Checking thiserror v1.0.63
[INFO] [stderr]    Compiling darling_macro v0.20.10
[INFO] [stderr]    Compiling darling v0.20.10
[INFO] [stderr]    Compiling enumset_derive v0.10.0
[INFO] [stderr]     Checking clap v3.2.25
[INFO] [stderr]     Checking enumset v1.1.5
[INFO] [stderr]     Checking mcap v0.9.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking serde_json v1.0.124
[INFO] [stderr]     Checking ciborium v0.2.2
[INFO] [stdout] error: this value of type `Option<Result<records::Record<'_>, McapError>>` has significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]     --> src/read.rs:1059:15
[INFO] [stdout]      |
[INFO] [stdout] 1033 |         let mut chunk_reader = ChunkReader::new(h, d)?;
[INFO] [stdout]      |             ---------------- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 1059 |         match chunk_reader.next() {
[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 `mcap` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "f2c4403cd19b6918605fd6384c0ffaa06604e56e3f4bebd5e47881b4d74ad4b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2c4403cd19b6918605fd6384c0ffaa06604e56e3f4bebd5e47881b4d74ad4b7", kill_on_drop: false }`
[INFO] [stdout] f2c4403cd19b6918605fd6384c0ffaa06604e56e3f4bebd5e47881b4d74ad4b7