[INFO] fetching crate rustidy-util 0.1.0...
[INFO] testing rustidy-util-0.1.0 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate rustidy-util 0.1.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate rustidy-util 0.1.0
[INFO] finished tweaking crates.io crate rustidy-util 0.1.0
[INFO] tweaked toml for crates.io crate rustidy-util 0.1.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rustidy-util 0.1.0 on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rustidy-util 0.1.0 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" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 95507b40219bf68bcf3b138120a382715c3119d5b5c5e210e5e4df2df8539abd
[INFO] running `Command { std: "docker" "start" "-a" "95507b40219bf68bcf3b138120a382715c3119d5b5c5e210e5e4df2df8539abd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "95507b40219bf68bcf3b138120a382715c3119d5b5c5e210e5e4df2df8539abd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95507b40219bf68bcf3b138120a382715c3119d5b5c5e210e5e4df2df8539abd", kill_on_drop: false }`
[INFO] [stdout] 95507b40219bf68bcf3b138120a382715c3119d5b5c5e210e5e4df2df8539abd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b1da62574b066b5a73fb9c37941e216023f6468d5c7a14166f8d433a2140b0cf
[INFO] running `Command { std: "docker" "start" "-a" "b1da62574b066b5a73fb9c37941e216023f6468d5c7a14166f8d433a2140b0cf", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-segmentation v1.12.0
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling arcstr v1.2.0
[INFO] [stderr]    Compiling quote v1.0.44
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling convert_case v0.10.0
[INFO] [stderr]    Compiling strum_macros v0.28.0
[INFO] [stderr]    Compiling derive_more-impl v2.1.1
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling extend v1.2.0
[INFO] [stderr]    Compiling strum v0.28.0
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling derive_more v2.1.1
[INFO] [stderr]    Compiling rustidy-util v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: cannot find module or crate `_serde` in this scope
[INFO] [stdout]  --> src/config.rs:9:2
[INFO] [stdout]   |
[INFO] [stdout] 9 |     indent                     : Arc<str>      = Arc::from("\t"),
[INFO] [stdout]   |     ^^^^^^ use of unresolved module or unlinked crate `_serde`
[INFO] [stdout]   |
[INFO] [stdout] help: there is a crate or module with a similar name
[INFO] [stdout]   |
[INFO] [stdout] 9 -     indent                     : Arc<str>      = Arc::from("\t"),
[INFO] [stdout] 9 +     serde                     : Arc<str>      = Arc::from("\t"),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find module or crate `_serde` in this scope
[INFO] [stdout]   --> src/config.rs:10:2
[INFO] [stdout]    |
[INFO] [stdout] 10 |     skip                       : bool          = false,
[INFO] [stdout]    |     ^^^^ use of unresolved module or unlinked crate `_serde`
[INFO] [stdout]    |
[INFO] [stdout] help: there is a crate or module with a similar name
[INFO] [stdout]    |
[INFO] [stdout] 10 -     skip                       : bool          = false,
[INFO] [stdout] 10 +     serde                       : bool          = false,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find module or crate `_serde` in this scope
[INFO] [stdout]   --> src/config.rs:11:2
[INFO] [stdout]    |
[INFO] [stdout] 11 |     min_empty_lines            : usize         = 0,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^ use of unresolved module or unlinked crate `_serde`
[INFO] [stdout]    |
[INFO] [stdout] help: there is a crate or module with a similar name
[INFO] [stdout]    |
[INFO] [stdout] 11 -     min_empty_lines            : usize         = 0,
[INFO] [stdout] 11 +     serde            : usize         = 0,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find module or crate `_serde` in this scope
[INFO] [stdout]   --> src/config.rs:12:2
[INFO] [stdout]    |
[INFO] [stdout] 12 |     max_empty_lines            : usize         = 2,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^ use of unresolved module or unlinked crate `_serde`
[INFO] [stdout]    |
[INFO] [stdout] help: there is a crate or module with a similar name
[INFO] [stdout]    |
[INFO] [stdout] 12 -     max_empty_lines            : usize         = 2,
[INFO] [stdout] 12 +     serde            : usize         = 2,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find module or crate `_serde` in this scope
[INFO] [stdout]   --> src/config.rs:13:2
[INFO] [stdout]    |
[INFO] [stdout] 13 |     max_use_tree_len           : usize         = 75,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^ use of unresolved module or unlinked crate `_serde`
[INFO] [stdout]    |
[INFO] [stdout] help: there is a crate or module with a similar name
[INFO] [stdout]    |
[INFO] [stdout] 13 -     max_use_tree_len           : usize         = 75,
[INFO] [stdout] 13 +     serde           : usize         = 75,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find module or crate `_serde` in this scope
[INFO] [stdout]   --> src/config.rs:14:2
[INFO] [stdout]    |
[INFO] [stdout] 14 |     array_expr_cols            : Option<usize> = None,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^ use of unresolved module or unlinked crate `_serde`
[INFO] [stdout]    |
[INFO] [stdout] help: there is a crate or module with a similar name
[INFO] [stdout]    |
[INFO] [stdout] 14 -     array_expr_cols            : Option<usize> = None,
[INFO] [stdout] 14 +     serde            : Option<usize> = None,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find module or crate `_serde` in this scope
[INFO] [stdout]   --> src/config.rs:15:2
[INFO] [stdout]    |
[INFO] [stdout] 15 |     max_array_expr_len         : usize         = 80,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^ use of unresolved module or unlinked crate `_serde`
[INFO] [stdout]    |
[INFO] [stdout] help: there is a crate or module with a similar name
[INFO] [stdout]    |
[INFO] [stdout] 15 -     max_array_expr_len         : usize         = 80,
[INFO] [stdout] 15 +     serde         : usize         = 80,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find module or crate `_serde` in this scope
[INFO] [stdout]   --> src/config.rs:16:2
[INFO] [stdout]    |
[INFO] [stdout] 16 |     max_chain_len              : usize         = 50,
[INFO] [stdout]    |     ^^^^^^^^^^^^^ use of unresolved module or unlinked crate `_serde`
[INFO] [stdout]    |
[INFO] [stdout] help: there is a crate or module with a similar name
[INFO] [stdout]    |
[INFO] [stdout] 16 -     max_chain_len              : usize         = 50,
[INFO] [stdout] 16 +     serde              : usize         = 50,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find module or crate `_serde` in this scope
[INFO] [stdout]   --> src/config.rs:17:2
[INFO] [stdout]    |
[INFO] [stdout] 17 |     max_inline_tuple_struct_len: usize         = 80,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ use of unresolved module or unlinked crate `_serde`
[INFO] [stdout]    |
[INFO] [stdout] help: there is a crate or module with a similar name
[INFO] [stdout]    |
[INFO] [stdout] 17 -     max_inline_tuple_struct_len: usize         = 80,
[INFO] [stdout] 17 +     serde: usize         = 80,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:4:1
[INFO] [stdout]    |
[INFO] [stdout]  4 | / #![feature(
[INFO] [stdout]  5 | |     iter_advance_by,
[INFO] [stdout]  6 | |     decl_macro,
[INFO] [stdout]  7 | |     macro_metavar_expr_concat,
[INFO] [stdout] ...  |
[INFO] [stdout] 12 | |     unsafe_cell_access
[INFO] [stdout] 13 | | )]
[INFO] [stdout]    | |__^
[INFO] [stdout]    |
[INFO] [stdout]    = help: the feature `if_let_guard` has been stable since `1.95.0` and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `if_let_guard` has been stable since 1.95.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:8:2
[INFO] [stdout]   |
[INFO] [stdout] 8 |     if_let_guard,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0433, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustidy-util` (lib) due to 10 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "b1da62574b066b5a73fb9c37941e216023f6468d5c7a14166f8d433a2140b0cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b1da62574b066b5a73fb9c37941e216023f6468d5c7a14166f8d433a2140b0cf", kill_on_drop: false }`
[INFO] [stdout] b1da62574b066b5a73fb9c37941e216023f6468d5c7a14166f8d433a2140b0cf
