[INFO] fetching crate rustc-ap-rustc_macros 727.0.0...
[INFO] testing rustc-ap-rustc_macros-727.0.0 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate rustc-ap-rustc_macros 727.0.0 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate rustc-ap-rustc_macros 727.0.0
[INFO] finished tweaking crates.io crate rustc-ap-rustc_macros 727.0.0
[INFO] tweaked toml for crates.io crate rustc-ap-rustc_macros 727.0.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rustc-ap-rustc_macros 727.0.0 on toolchain beta-2025-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 6 packages to latest compatible versions
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.108)
[INFO] [stderr]       Adding synstructure v0.12.6 (available: v0.13.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 96ac4f62e971b207ad5e82d3a7b475c31793db348835cbf1e61fe66361ff194a
[INFO] running `Command { std: "docker" "start" "-a" "96ac4f62e971b207ad5e82d3a7b475c31793db348835cbf1e61fe66361ff194a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "96ac4f62e971b207ad5e82d3a7b475c31793db348835cbf1e61fe66361ff194a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96ac4f62e971b207ad5e82d3a7b475c31793db348835cbf1e61fe66361ff194a", kill_on_drop: false }`
[INFO] [stdout] 96ac4f62e971b207ad5e82d3a7b475c31793db348835cbf1e61fe66361ff194a
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 97ada64d42f6e87c1ea72cfc36338acf2a2b18dcb03532fc37175422b8fbb214
[INFO] running `Command { std: "docker" "start" "-a" "97ada64d42f6e87c1ea72cfc36338acf2a2b18dcb03532fc37175422b8fbb214", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling rustc-ap-rustc_macros v727.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro_diagnostic)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `parse_quote`
[INFO] [stdout]  --> src/query.rs:8:47
[INFO] [stdout]   |
[INFO] [stdout] 8 |     braced, parenthesized, parse_macro_input, parse_quote, AttrStyle, Attribute, Block, Error,
[INFO] [stdout]   |                                               ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on statements
[INFO] [stdout]    --> src/session_diagnostic.rs:590:17
[INFO] [stdout]     |
[INFO] [stdout] 590 |                 #[must_use]
[INFO] [stdout]     |                 ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, functions, traits, and unions
[INFO] [stdout]     = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustc-ap-rustc_macros` (lib) due to 1 previous error; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "97ada64d42f6e87c1ea72cfc36338acf2a2b18dcb03532fc37175422b8fbb214", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97ada64d42f6e87c1ea72cfc36338acf2a2b18dcb03532fc37175422b8fbb214", kill_on_drop: false }`
[INFO] [stdout] 97ada64d42f6e87c1ea72cfc36338acf2a2b18dcb03532fc37175422b8fbb214