Bump MSRV 1.88, syn 3.0 and darling 0.24

[Veetaha]

No description provided.

[Copilot]

Pull request overview

This PR raises the project’s Minimum Supported Rust Version (MSRV) to 1.88, migrates crates to Rust 2024 edition, and updates the proc-macro stack to darling@0.24 / syn@3 (plus related lockfile and test updates) while removing legacy MSRV gating (rustversion, feature-gated implied bounds) across code, tests, scripts, and docs.

Changes:

• Bump MSRV to 1.88 and update CI/MSRV tooling and documentation accordingly.
• Upgrade proc-macro dependencies to darling@0.24.1 and syn@3.0.3 (plus prettyplease@0.3) and refactor macro code for syn v3 API changes.
• Move crates to Rust 2024 edition and update tests/fixtures/docs to match new diagnostics and defaults.

Reviewed changes

Copilot reviewed 68 out of 69 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
website/src/reference/builder/top-level/derive.md	Removes outdated IntoFuture MSRV note after MSRV bump.
website/src/reference/builder/top-level/const.md	Removes outdated MSRV row from const builder docs.
website/src/guide/typestate-api/custom-methods.md	Updates docs: implied-bounds no longer feature-gated.
website/doctests/Cargo.toml	Switches doctests crate to edition 2024; drops implied-bounds feature.
scripts/test-msrv.sh	Updates MSRV default to 1.88 and reshapes workspace for MSRV runs; updates pinned deps.
rust-toolchain.toml	Bumps dev toolchain channel to 1.98.0.
README.md	Updates MSRV badge to 1.88.0.
Cargo.toml	Adjusts workspace lint configuration for 2024/MSRV changes.
Cargo.lock	Updates lockfile format (v4) and dependency graph for syn3/darling0.24.
bon/tests/integration/ui/compile_fail/attr_with.stderr	Updates expected compiler error output.
bon/tests/integration/ui/compile_fail/attr_derive.stderr	Updates expected compiler error output for new parsing/diagnostics.
bon/tests/integration/ui/compile_fail/attr_bon.stderr	Updates expected error output to include available values.
bon/tests/integration/main.rs	Reorders prelude re-exports.
bon/tests/integration/builder/target_feature.rs	Removes rustversion gating and renames module for x86_64-only test.
bon/tests/integration/builder/name_conflicts/builder_state.rs	Adds comments/rustfmt skip to preserve exact parse structure in tests.
bon/tests/integration/builder/mod.rs	Tweaks async test generic bound usage.
bon/tests/integration/builder/attr_into_future.rs	Removes MSRV gating and clippy MSRV allowance now that MSRV is higher.
bon/tests/integration/builder/attr_field.rs	Removes rustversion gating around impl Trait turbofish tests.
bon/tests/integration/builder/attr_const.rs	Expands const builder tests and removes old MSRV gating.
bon/src/lib.rs	Switches to #![expect(deprecated)] and reorders macro re-exports.
bon/src/collections.rs	Drops edition-2024 expr fragment specifier lint allowances on macros.
bon/src/builder_state.rs	Makes diagnostic::on_unimplemented unconditional (MSRV now supports it).
bon/src/__/mod.rs	Removes rustversion re-export.
bon/src/__/ide.rs	Removes IntoFuture rustversion gating.
bon/Cargo.toml	Bumps edition to 2024, sets rust-version to 1.88, removes rustversion dep.
bon-sandbox/src/missing_docs_test.rs	Reorders imports for updated public API re-exports.
bon-sandbox/src/docs_in_private_items.rs	Reorders imports for updated public API re-exports.
bon-sandbox/src/attr_getter.rs	Reorders imports.
bon-sandbox/Cargo.toml	Switches sandbox crate to edition 2024.
bon-macros/src/util/visibility.rs	Updates syntax to Rust 2024 idioms (if let ... &&).
bon-macros/src/util/ty/match_types.rs	Refactors pattern matching for syn v3 API changes and trait impl availability.
bon-macros/src/util/mod.rs	Reorders prelude imports and drops obsolete lint allowances.
bon-macros/src/util/ide.rs	Reorders imports and updates completion trigger filtering logic.
bon-macros/src/util/fn_arg.rs	Removes ty_mut helper (syn v3 receiver/type handling refactor).
bon-macros/src/tests/mod.rs	Reorders expect-test imports.
bon-macros/src/tests/attr_setters.rs	Uses then_some for clarity/2024 style.
bon-macros/src/parsing/simple_closure.rs	Updates closure modifier handling for syn v3.
bon-macros/src/parsing/item_sig.rs	Refactors conditional doc self-mention rejection logic.
bon-macros/src/parsing/const_.rs	Updates const-expression validation for syn v3 AST changes.
bon-macros/src/parsing/bon_crate_path.rs	Derives Default directly on enum.
bon-macros/src/normalization/self_ty.rs	Adjusts pattern destructuring for syn v3 struct fields.
bon-macros/src/normalization/lifetimes.rs	Updates receiver/lifetime handling and fn-pointer visitor hooks for syn v3.
bon-macros/src/normalization/impl_traits.rs	Refactors impl-trait normalization with syn v3 receiver changes.
bon-macros/src/normalization/cfg/visit.rs	Refactors variadic cfg handling with Rust 2024 if let ... &&.
bon-macros/src/normalization/cfg/mod.rs	Uses then_some when selecting cfg_attr branches.
bon-macros/src/lib.rs	Switches lint config to #![expect(...)] and drops some obsolete allowances.
bon-macros/src/error/panic_context.rs	Drops rustversion compatibility shim; uses std backtrace/PanicHookInfo directly.
bon-macros/src/builder/item_struct.rs	Reorders imports.
bon-macros/src/builder/item_impl.rs	Updates syn v3 trait_/modifiers handling for impl items.
bon-macros/src/builder/builder_gen/top_level_config/on.rs	Reorders imports.
bon-macros/src/builder/builder_gen/top_level_config/mod.rs	Reorders imports and refactors on-clause validation logic.
bon-macros/src/builder/builder_gen/state_mod.rs	Makes associated type bounds implied-bounds behavior unconditional.
bon-macros/src/builder/builder_gen/start_fn.rs	Updates receiver-kind logic and clippy lint selection for newer toolchains.
bon-macros/src/builder/builder_gen/setters/mod.rs	Minor refactors and formatting updates (incl. conditional logic).
bon-macros/src/builder/builder_gen/member/named.rs	Refactors validation/merge logic with Rust 2024 if let ... &&.
bon-macros/src/builder/builder_gen/member/mod.rs	Reorders imports.
bon-macros/src/builder/builder_gen/member/config/with/mod.rs	Boxes closure config variant to reduce enum size; adjusts parsing.
bon-macros/src/builder/builder_gen/member/config/setters.rs	Reorders imports.
bon-macros/src/builder/builder_gen/member/config/mod.rs	Refactors const/getter validation with Rust 2024 conditionals.
bon-macros/src/builder/builder_gen/input_fn/validation.rs	Refactors const-fn validation logic.
bon-macros/src/builder/builder_gen/input_fn/mod.rs	Updates receiver-type extraction and safety handling for syn v3.
bon-macros/src/builder/builder_gen/getters.rs	Simplifies CString well-known type path now that MSRV guarantees core::ffi::CStr.
bon-macros/src/builder/builder_gen/generic_setters.rs	Refactors conditional insert logic and type param replacement.
bon-macros/src/builder/builder_gen/builder_derives/mod.rs	Reorders imports.
bon-macros/src/bon.rs	Reorders imports.
bon-macros/Cargo.toml	Switches to edition 2024, bumps rust-version to 1.88, updates darling/syn/prettyplease deps.
benchmarks/compilation/codegen/Cargo.toml	Switches benchmark codegen crate to edition 2024.
benchmarks/compilation/Cargo.toml	Switches benchmark crate to edition 2024.
.github/workflows/ci.yml	Updates CI MSRV matrix to just 1.88.0.

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