[dependabot]

Bumps syn from 2.0.118 to 3.0.6.

Release notes

Sourced from syn's releases.

3.0.6

• Fix parsing interpolated lifetime at statement start (#2082)

3.0.5

• Report correct span for lex errors from LitStr::parse_with (#2080, thanks @​sunshowers)

3.0.4

• Allow safe fn in impl Parse for ForeignItemFn (#2078)

3.0.3

• Documentation improvements

3.0.2

• Add Error::new_range(start..end, "msg") (#2068, #2070)
• Add Cursor::prev_span

3.0.1

• Parse const traits (#2056, #2057, #2058, #2063, #2064)
• Parse unsafe binder types (#2065)
• Parse impl restrictions (#2066)

3.0.0

This release contains adjustments to the syntax tree to account for ongoing Rust language development from the 3 years since syn 2.0.0 and to anticipate some in-flight Rust language RFCs.

These include: default values in fields, pinned type sugar, raw lifetimes, generator blocks and functions, unnamed enum variants, attributes in tuple types and tuple patterns, named arguments in parenthesized generic argument lists, lightweight clones, const traits, const function pointers, mutability restricted fields, supertrait auto implementation, final associated functions, trait implementability restrictions, const blocks in path arguments, item-level const blocks, return type notation, never patterns, function delegation, mutable by-reference bindings, in-place initialization, field projections, explicitly dyn-compatible traits, view types, file-level frontmatter, generic const arguments, guard patterns, lazy type aliases, explicitly safe foreign items, super let, unsafe fields, pattern types, heterogeneous try-blocks, function contracts, async function trait bounds, static closure coroutine syntax, unsafe binder types, move expressions, for-await loops, and postfix keywords.

Breaking changes

Modifiers

To reserve more room for language evolution, there are 10 new non-exhaustive structs in the syntax tree having the following commonality:

• Name ending in Modifiers. {BlockModifiers, ClosureModifiers, ConstModifiers, FieldModifiers, FnModifiers, ImplModifiers, LocalModifiers, TraitBoundModifiers, TraitModifiers, TypeModifiers}

• Each implements Default. The default value is guaranteed to comprise no tokens.

• Non-exhaustive. Can only be instantiated by Syn's parser or by creating and then mutating ▁▁Modifiers::default().

• Does not implement Parse. When parsing, they are parsed by the enclosing syntax tree node.

• Does not implement ToTokens. In some cases the syntax that these nodes might hold in the future is not necessarily contiguous tokens.

• Provides .require_empty() -> Result<()> which returns a meaningfully spanned error if the modifiers are different from the empty default. This enables a caller to reject syntax it does not recognize without knowing what that syntax may be.

Types

... (truncated)

Commits

• 559cab5 Release 3.0.6
• 9088cad Merge pull request #2082 from dtolnay/lifetimevar
• 3eb43bb Fix parsing interpolated lifetime at statement start
• 7b2f6f9 Add regression test for issue 2081
• d55bcd2 Update test suite to nightly-2026-09-13
• 8e37bca Resolve non_kebab_case_bins warning
• 4dfd88f Update test suite to nightly-2026-09-06
• e0ad92d Release 3.0.5
• 74e7d75 Merge pull request #2080 from sunshowers/lit-str-span
• 4c264f3 In LitStr::parse_with, report correct span for lex errors
• Additional commits viewable in compare view

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[dependabot]

Looks like syn is up-to-date now, so this is no longer needed.