Merging upstream version 1.73.0+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

27 files changed, 316 insertions, 207 deletions

diff --git a/vendor/syn/.cargo-checksum.json b/vendor/syn/.cargo-checksum.json
index 8085d0f2e..dc7be8961 100644
--- a/vendor/syn/.cargo-checksum.json
+++ b/vendor/syn/.cargo-checksum.json
@@ -1 +1 @@
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\ No newline at end of file
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c25fe73ef2f461c67688b61b99762015","tests/common/parse.rs":"246ddf1d303a9dbbc380e8d0689bd851cef3c3146d09d2627175deb9203b003d","tests/debug/gen.rs":"0b689be01a4f4a0d168617b0f867f248a9e3d211e259926e6ec6c10a59776d81","tests/debug/mod.rs":"dd87563bbd359401790a9c4185178539929ff9fa35a6998657af82a85731fe4c","tests/macros/mod.rs":"4c84bd9e82df255258671b6a57b0f2a3e4bef2127a2e8b842a4b6f3037b7fc5c","tests/regression.rs":"e9565ea0efecb4136f099164ffcfa26e1996b0a27fb9c6659e90ad9bdd42e7b6","tests/regression/issue1108.rs":"f32db35244a674e22ff824ca9e5bbec2184e287b59f022db68c418b5878a2edc","tests/regression/issue1235.rs":"a2266b10c3f7c7af5734817ab0a3e8b309b51e7d177b63f26e67e6b744d280b0","tests/repo/mod.rs":"a857b13b258846a5f2b25c66e8db149c703ab7f623505dc18206eec4244ffba2","tests/repo/progress.rs":"c08d0314a7f3ecf760d471f27da3cd2a500aeb9f1c8331bffb2aa648f9fabf3f","tests/test_asyncness.rs":"3868181f25f7470476077f80a442a7804b6b9b371ad5917f4fd18b1002714c64","tests/test_attribute.rs":"b35550a43bbd187bb330997ba36f90c65d8fc489135b1d32ef4547f145cb7612","tests/test_derive_input.rs":"c215245c4d09052661ac5b65b34e950ea47622847bdffe648d380470f12db8f2","tests/test_expr.rs":"2de81f6171bcde3db8d36ce90b9c77ce672f93dcb1e03b6a44290b039246132b","tests/test_generics.rs":"b77741aa38e6ac7e1a9082faf168e7b7b92fbabf9f3fd07306676339a67394df","tests/test_grouping.rs":"ecbe3324878b2e2be42640a3dec198620cff18731fcb95ee7e94eacd11d2fec1","tests/test_ident.rs":"9eb53d1e21edf23e7c9e14dc74dcc2b2538e9221e19dbcc0a44e3acc2e90f3f6","tests/test_item.rs":"7f0255b61d0a6921313c09aaba470beefc55f1d4e66d1e24cfac7a3f63b035d8","tests/test_iterators.rs":"f4dacb5f3a8e0473dfb0d27f05270d41e79eddb4759b1fad3e88e379b4731e17","tests/test_lit.rs":"7297fed48ca248689f112f67b6f024f2f2784e29c6cd33185ac659c350834b01","tests/test_meta.rs":"3e1bb60b4bd56adb1e04b0e2d867404f0d81f7bf69caf7d8a70fc7090e079e84","tests/test_parse_buffer.rs":"3ed83ea2e50f84b80c0b543aac4bfbd379610d0911c0baa1eb94bb925bda7341","tests/test_parse_stream.rs":"a7e186272c89a239cae03053b5a039cdc073cdb46fad64b178fe76fde98405d5","tests/test_pat.rs":"fe94e084ee478d41cccea4eeb3e975386a70d36ff7cbb902ba0c767d536aab6e","tests/test_path.rs":"0033e1082b576bb3217ebd4546423d6f86fde7ee7ba3aba8c57bf137d2b42f47","tests/test_precedence.rs":"1395b213a1aa953a3b2eacc922853f8d0e3afba552325440bfbe4df6b62102a1","tests/test_receiver.rs":"af64117acd66fbf42edc476f731ecd20c88009d9cb641dbd7a1d6384ae99ae73","tests/test_round_trip.rs":"61183de56bf70c628659b9529f794b9f138904959f919f08f3b8176ba62c76ef","tests/test_shebang.rs":"06d3acabed004767d8b3a0389bde7485a6719cad6a0d0b4ac2c7439b03586651","tests/test_should_parse.rs":"1d3535698a446e2755bfc360676bdb161841a1f454cdef6e7556c6d06a95c89d","tests/test_size.rs":"78c14995718c2f8d5a7296c8f524601c30f91a5586e1402c0775977a4f814406","tests/test_stmt.rs":"42a3707056da0ce3a01f8fb13e8b7631f9be6066627ac376e1874742419ad2cc","tests/test_token_trees.rs":"d012da9c3c861073711b006bf6ffdc073821fb9fb0a08733628cdae57124d1f5","tests/test_ty.rs":"f7f21f76e9e798669f09a95c380e26ae5959ee8ac5f3b765b1a799cc9505d075","tests/test_visibility.rs":"cf4c93997cd88821ef7f8e2dd5d1586175cce4614407cd3bdf371ecc4d8abc44","tests/zzz_stable.rs":"2a862e59cb446235ed99aec0e6ada8e16d3ecc30229b29d825b7c0bbc2602989"},"package":"04361975b3f5e348b2189d8dc55bc942f278b2d482a6a0365de5bdd62d351567"}
\ No newline at end of file
diff --git a/vendor/syn/Cargo.toml b/vendor/syn/Cargo.toml
index 52dbea46b..0018a539f 100644
--- a/vendor/syn/Cargo.toml
+++ b/vendor/syn/Cargo.toml
@@ -13,7 +13,7 @@
 edition = "2021"
 rust-version = "1.56"
 name = "syn"
-version = "2.0.18"
+version = "2.0.28"
 authors = ["David Tolnay <dtolnay@gmail.com>"]
 include = [
     "/benches/**",
@@ -43,6 +43,7 @@ all-features = true
 rustdoc-args = [
     "--cfg",
     "doc_cfg",
+    "--generate-link-to-definition",
 ]
 targets = ["x86_64-unknown-linux-gnu"]
 
@@ -74,7 +75,7 @@ required-features = [
 ]
 
 [dependencies.proc-macro2]
-version = "1.0.59"
+version = "1.0.62"
 default-features = false
 
 [dependencies.quote]
diff --git a/vendor/syn/README.md b/vendor/syn/README.md
index 24aea1700..e8d99abcf 100644
--- a/vendor/syn/README.md
+++ b/vendor/syn/README.md
@@ -39,12 +39,12 @@ contains some APIs that may be useful more generally.
   procedural macros enable only what they need, and do not pay in compile time
   for all the rest.
 
-[`syn::File`]: https://docs.rs/syn/1.0/syn/struct.File.html
-[`syn::Item`]: https://docs.rs/syn/1.0/syn/enum.Item.html
-[`syn::Expr`]: https://docs.rs/syn/1.0/syn/enum.Expr.html
-[`syn::Type`]: https://docs.rs/syn/1.0/syn/enum.Type.html
-[`syn::DeriveInput`]: https://docs.rs/syn/1.0/syn/struct.DeriveInput.html
-[parser functions]: https://docs.rs/syn/1.0/syn/parse/index.html
+[`syn::File`]: https://docs.rs/syn/2.0/syn/struct.File.html
+[`syn::Item`]: https://docs.rs/syn/2.0/syn/enum.Item.html
+[`syn::Expr`]: https://docs.rs/syn/2.0/syn/enum.Expr.html
+[`syn::Type`]: https://docs.rs/syn/2.0/syn/enum.Type.html
+[`syn::DeriveInput`]: https://docs.rs/syn/2.0/syn/struct.DeriveInput.html
+[parser functions]: https://docs.rs/syn/2.0/syn/parse/index.html
 
 *Version requirement: Syn supports rustc 1.56 and up.*
 
diff --git a/vendor/syn/benches/rust.rs b/vendor/syn/benches/rust.rs
index ce6cfde29..643976188 100644
--- a/vendor/syn/benches/rust.rs
+++ b/vendor/syn/benches/rust.rs
@@ -80,7 +80,7 @@ mod librustc_parse {
         rustc_span::create_session_if_not_set_then(Edition::Edition2018, |_| {
             let cm = Lrc::new(SourceMap::new(FilePathMapping::empty()));
             let emitter = Box::new(SilentEmitter);
-            let handler = Handler::with_emitter(false, None, emitter);
+            let handler = Handler::with_emitter(emitter);
             let sess = ParseSess::with_span_handler(handler, cm);
             if let Err(diagnostic) = rustc_parse::parse_crate_from_source_str(
                 FileName::Custom("bench".to_owned()),
diff --git a/vendor/syn/src/error.rs b/vendor/syn/src/error.rs
index 93f20f42f..3fe31d5ce 100644
--- a/vendor/syn/src/error.rs
+++ b/vendor/syn/src/error.rs
@@ -385,7 +385,7 @@ impl Clone for Error {
 impl Clone for ErrorMessage {
     fn clone(&self) -> Self {
         ErrorMessage {
-            span: self.span.clone(),
+            span: self.span,
             message: self.message.clone(),
         }
     }
diff --git a/vendor/syn/src/expr.rs b/vendor/syn/src/expr.rs
index 0f1a6953e..ae723242e 100644
--- a/vendor/syn/src/expr.rs
+++ b/vendor/syn/src/expr.rs
@@ -1377,7 +1377,7 @@ pub(crate) mod parsing {
             }
             let expr = Box::new(unary_expr(input, allow_struct)?);
             if raw.is_some() {
-                Ok(Expr::Verbatim(verbatim::between(begin, input)))
+                Ok(Expr::Verbatim(verbatim::between(&begin, input)))
             } else {
                 Ok(Expr::Reference(ExprReference {
                     attrs,
@@ -1423,7 +1423,7 @@ pub(crate) mod parsing {
         let mut e = trailer_helper(input, atom)?;
 
         if let Expr::Verbatim(tokens) = &mut e {
-            *tokens = verbatim::between(begin, input);
+            *tokens = verbatim::between(&begin, input);
         } else {
             let inner_attrs = e.replace_attrs(Vec::new());
             attrs.extend(inner_attrs);
@@ -1663,7 +1663,7 @@ pub(crate) mod parsing {
             }
             Ok(expr)
         } else {
-            Err(input.error("expected expression"))
+            Err(input.error("expected an expression"))
         }
     }
 
@@ -1691,6 +1691,16 @@ pub(crate) mod parsing {
         } else if input.is_empty() {
             Err(input.error("expected an expression"))
         } else {
+            if input.peek(token::Brace) {
+                let scan = input.fork();
+                let content;
+                braced!(content in scan);
+                if content.parse::<Expr>().is_ok() && content.is_empty() {
+                    let expr_block = verbatim::between(input, &scan);
+                    input.advance_to(&scan);
+                    return Ok(Expr::Verbatim(expr_block));
+                }
+            }
             Err(input.error("unsupported expression; enable syn's features=[\"full\"]"))
         }
     }
@@ -1707,7 +1717,7 @@ pub(crate) mod parsing {
         parenthesized!(args in input);
         args.parse::<TokenStream>()?;
 
-        Ok(Expr::Verbatim(verbatim::between(begin, input)))
+        Ok(Expr::Verbatim(verbatim::between(&begin, input)))
     }
 
     fn path_or_macro_or_struct(
diff --git a/vendor/syn/src/gen/fold.rs b/vendor/syn/src/gen/fold.rs
index 624c15b17..8ea6c75fc 100644
--- a/vendor/syn/src/gen/fold.rs
+++ b/vendor/syn/src/gen/fold.rs
@@ -2,7 +2,11 @@
 // It is not intended for manual editing.
 
 #![allow(unreachable_code, unused_variables)]
-#![allow(clippy::match_wildcard_for_single_variants, clippy::needless_match)]
+#![allow(
+    clippy::match_wildcard_for_single_variants,
+    clippy::needless_match,
+    clippy::needless_pass_by_ref_mut,
+)]
 #[cfg(any(feature = "full", feature = "derive"))]
 use crate::gen::helper::fold::*;
 use crate::*;
diff --git a/vendor/syn/src/gen/visit.rs b/vendor/syn/src/gen/visit.rs
index 9eaa24f05..fe81fb63c 100644
--- a/vendor/syn/src/gen/visit.rs
+++ b/vendor/syn/src/gen/visit.rs
@@ -2,6 +2,7 @@
 // It is not intended for manual editing.
 
 #![allow(unused_variables)]
+#![allow(clippy::needless_pass_by_ref_mut)]
 #[cfg(any(feature = "full", feature = "derive"))]
 use crate::punctuated::Punctuated;
 use crate::*;
diff --git a/vendor/syn/src/gen/visit_mut.rs b/vendor/syn/src/gen/visit_mut.rs
index 83bd1ccf8..9e7d16ff6 100644
--- a/vendor/syn/src/gen/visit_mut.rs
+++ b/vendor/syn/src/gen/visit_mut.rs
@@ -2,6 +2,7 @@
 // It is not intended for manual editing.
 
 #![allow(unused_variables)]
+#![allow(clippy::needless_pass_by_ref_mut)]
 #[cfg(any(feature = "full", feature = "derive"))]
 use crate::punctuated::Punctuated;
 use crate::*;
diff --git a/vendor/syn/src/generics.rs b/vendor/syn/src/generics.rs
index 44a10da7d..2ad913d1d 100644
--- a/vendor/syn/src/generics.rs
+++ b/vendor/syn/src/generics.rs
@@ -771,7 +771,7 @@ pub(crate) mod parsing {
             bound.paren_token = paren_token;
 
             if is_tilde_const {
-                Ok(TypeParamBound::Verbatim(verbatim::between(begin, input)))
+                Ok(TypeParamBound::Verbatim(verbatim::between(&begin, input)))
             } else {
                 Ok(TypeParamBound::Trait(bound))
             }
diff --git a/vendor/syn/src/ident.rs b/vendor/syn/src/ident.rs
index bd6f3f9f2..41eb72129 100644
--- a/vendor/syn/src/ident.rs
+++ b/vendor/syn/src/ident.rs
@@ -3,7 +3,6 @@ use crate::lookahead;
 
 pub use proc_macro2::Ident;
 
-#[cfg(not(doc))] // rustdoc bug: https://github.com/rust-lang/rust/issues/105735
 #[cfg(feature = "parsing")]
 #[doc(hidden)]
 #[allow(non_snake_case)]
diff --git a/vendor/syn/src/item.rs b/vendor/syn/src/item.rs
index 46ccd73ff..50d7e6ef6 100644
--- a/vendor/syn/src/item.rs
+++ b/vendor/syn/src/item.rs
@@ -898,96 +898,76 @@ pub(crate) mod parsing {
     impl Parse for Item {
         fn parse(input: ParseStream) -> Result<Self> {
             let begin = input.fork();
-            let mut attrs = input.call(Attribute::parse_outer)?;
-            let ahead = input.fork();
-            let vis: Visibility = ahead.parse()?;
+            let attrs = input.call(Attribute::parse_outer)?;
+            parse_rest_of_item(begin, attrs, input)
+        }
+    }
 
+    pub(crate) fn parse_rest_of_item(
+        begin: ParseBuffer,
+        mut attrs: Vec<Attribute>,
+        input: ParseStream,
+    ) -> Result<Item> {
+        let ahead = input.fork();
+        let vis: Visibility = ahead.parse()?;
+
+        let lookahead = ahead.lookahead1();
+        let mut item = if lookahead.peek(Token![fn]) || peek_signature(&ahead) {
+            let vis: Visibility = input.parse()?;
+            let sig: Signature = input.parse()?;
+            if input.peek(Token![;]) {
+                input.parse::<Token![;]>()?;
+                Ok(Item::Verbatim(verbatim::between(&begin, input)))
+            } else {
+                parse_rest_of_fn(input, Vec::new(), vis, sig).map(Item::Fn)
+            }
+        } else if lookahead.peek(Token![extern]) {
+            ahead.parse::<Token![extern]>()?;
             let lookahead = ahead.lookahead1();
-            let mut item = if lookahead.peek(Token![fn]) || peek_signature(&ahead) {
-                let vis: Visibility = input.parse()?;
-                let sig: Signature = input.parse()?;
-                if input.peek(Token![;]) {
-                    input.parse::<Token![;]>()?;
-                    Ok(Item::Verbatim(verbatim::between(begin, input)))
-                } else {
-                    parse_rest_of_fn(input, Vec::new(), vis, sig).map(Item::Fn)
-                }
-            } else if lookahead.peek(Token![extern]) {
-                ahead.parse::<Token![extern]>()?;
+            if lookahead.peek(Token![crate]) {
+                input.parse().map(Item::ExternCrate)
+            } else if lookahead.peek(token::Brace) {
+                input.parse().map(Item::ForeignMod)
+            } else if lookahead.peek(LitStr) {
+                ahead.parse::<LitStr>()?;
                 let lookahead = ahead.lookahead1();
-                if lookahead.peek(Token![crate]) {
-                    input.parse().map(Item::ExternCrate)
-                } else if lookahead.peek(token::Brace) {
+                if lookahead.peek(token::Brace) {
                     input.parse().map(Item::ForeignMod)
-                } else if lookahead.peek(LitStr) {
-                    ahead.parse::<LitStr>()?;
-                    let lookahead = ahead.lookahead1();
-                    if lookahead.peek(token::Brace) {
-                        input.parse().map(Item::ForeignMod)
-                    } else {
-                        Err(lookahead.error())
-                    }
                 } else {
                     Err(lookahead.error())
                 }
-            } else if lookahead.peek(Token![use]) {
-                let allow_crate_root_in_path = true;
-                match parse_item_use(input, allow_crate_root_in_path)? {
-                    Some(item_use) => Ok(Item::Use(item_use)),
-                    None => Ok(Item::Verbatim(verbatim::between(begin, input))),
-                }
-            } else if lookahead.peek(Token![static]) {
-                let vis = input.parse()?;
-                let static_token = input.parse()?;
-                let mutability = input.parse()?;
-                let ident = input.parse()?;
-                if input.peek(Token![=]) {
-                    input.parse::<Token![=]>()?;
-                    input.parse::<Expr>()?;
-                    input.parse::<Token![;]>()?;
-                    Ok(Item::Verbatim(verbatim::between(begin, input)))
-                } else {
-                    let colon_token = input.parse()?;
-                    let ty = input.parse()?;
-                    if input.peek(Token![;]) {
-                        input.parse::<Token![;]>()?;
-                        Ok(Item::Verbatim(verbatim::between(begin, input)))
-                    } else {
-                        Ok(Item::Static(ItemStatic {
-                            attrs: Vec::new(),
-                            vis,
-                            static_token,
-                            mutability,
-                            ident,
-                            colon_token,
-                            ty,
-                            eq_token: input.parse()?,
-                            expr: input.parse()?,
-                            semi_token: input.parse()?,
-                        }))
-                    }
-                }
-            } else if lookahead.peek(Token![const]) {
-                let vis = input.parse()?;
-                let const_token: Token![const] = input.parse()?;
-                let lookahead = input.lookahead1();
-                let ident = if lookahead.peek(Ident) || lookahead.peek(Token![_]) {
-                    input.call(Ident::parse_any)?
-                } else {
-                    return Err(lookahead.error());
-                };
+            } else {
+                Err(lookahead.error())
+            }
+        } else if lookahead.peek(Token![use]) {
+            let allow_crate_root_in_path = true;
+            match parse_item_use(input, allow_crate_root_in_path)? {
+                Some(item_use) => Ok(Item::Use(item_use)),
+                None => Ok(Item::Verbatim(verbatim::between(&begin, input))),
+            }
+        } else if lookahead.peek(Token![static]) {
+            let vis = input.parse()?;
+            let static_token = input.parse()?;
+            let mutability = input.parse()?;
+            let ident = input.parse()?;
+            if input.peek(Token![=]) {
+                input.parse::<Token![=]>()?;
+                input.parse::<Expr>()?;
+                input.parse::<Token![;]>()?;
+                Ok(Item::Verbatim(verbatim::between(&begin, input)))
+            } else {
                 let colon_token = input.parse()?;
                 let ty = input.parse()?;
                 if input.peek(Token![;]) {
                     input.parse::<Token![;]>()?;
-                    Ok(Item::Verbatim(verbatim::between(begin, input)))
+                    Ok(Item::Verbatim(verbatim::between(&begin, input)))
                 } else {
-                    Ok(Item::Const(ItemConst {
+                    Ok(Item::Static(ItemStatic {
                         attrs: Vec::new(),
                         vis,
-                        const_token,
+                        static_token,
+                        mutability,
                         ident,
-                        generics: Generics::default(),
                         colon_token,
                         ty,
                         eq_token: input.parse()?,
@@ -995,69 +975,97 @@ pub(crate) mod parsing {
                         semi_token: input.parse()?,
                     }))
                 }
-            } else if lookahead.peek(Token![unsafe]) {
-                ahead.parse::<Token![unsafe]>()?;
-                let lookahead = ahead.lookahead1();
-                if lookahead.peek(Token![trait])
-                    || lookahead.peek(Token![auto]) && ahead.peek2(Token![trait])
-                {
-                    input.parse().map(Item::Trait)
-                } else if lookahead.peek(Token![impl]) {
-                    let allow_verbatim_impl = true;
-                    if let Some(item) = parse_impl(input, allow_verbatim_impl)? {
-                        Ok(Item::Impl(item))
-                    } else {
-                        Ok(Item::Verbatim(verbatim::between(begin, input)))
-                    }
-                } else if lookahead.peek(Token![extern]) {
-                    input.parse().map(Item::ForeignMod)
-                } else if lookahead.peek(Token![mod]) {
-                    input.parse().map(Item::Mod)
-                } else {
-                    Err(lookahead.error())
-                }
-            } else if lookahead.peek(Token![mod]) {
-                input.parse().map(Item::Mod)
-            } else if lookahead.peek(Token![type]) {
-                parse_item_type(begin, input)
-            } else if lookahead.peek(Token![struct]) {
-                input.parse().map(Item::Struct)
-            } else if lookahead.peek(Token![enum]) {
-                input.parse().map(Item::Enum)
-            } else if lookahead.peek(Token![union]) && ahead.peek2(Ident) {
-                input.parse().map(Item::Union)
-            } else if lookahead.peek(Token![trait]) {
-                input.call(parse_trait_or_trait_alias)
-            } else if lookahead.peek(Token![auto]) && ahead.peek2(Token![trait]) {
-                input.parse().map(Item::Trait)
-            } else if lookahead.peek(Token![impl])
-                || lookahead.peek(Token![default]) && !ahead.peek2(Token![!])
+            }
+        } else if lookahead.peek(Token![const]) {
+            let vis = input.parse()?;
+            let const_token: Token![const] = input.parse()?;
+            let lookahead = input.lookahead1();
+            let ident = if lookahead.peek(Ident) || lookahead.peek(Token![_]) {
+                input.call(Ident::parse_any)?
+            } else {
+                return Err(lookahead.error());
+            };
+            let colon_token = input.parse()?;
+            let ty = input.parse()?;
+            if input.peek(Token![;]) {
+                input.parse::<Token![;]>()?;
+                Ok(Item::Verbatim(verbatim::between(&begin, input)))
+            } else {
+                Ok(Item::Const(ItemConst {
+                    attrs: Vec::new(),
+                    vis,
+                    const_token,
+                    ident,
+                    generics: Generics::default(),
+                    colon_token,
+                    ty,
+                    eq_token: input.parse()?,
+                    expr: input.parse()?,
+                    semi_token: input.parse()?,
+                }))
+            }
+        } else if lookahead.peek(Token![unsafe]) {
+            ahead.parse::<Token![unsafe]>()?;
+            let lookahead = ahead.lookahead1();
+            if lookahead.peek(Token![trait])
+                || lookahead.peek(Token![auto]) && ahead.peek2(Token![trait])
             {
+                input.parse().map(Item::Trait)
+            } else if lookahead.peek(Token![impl]) {
                 let allow_verbatim_impl = true;
                 if let Some(item) = parse_impl(input, allow_verbatim_impl)? {
                     Ok(Item::Impl(item))
                 } else {
-                    Ok(Item::Verbatim(verbatim::between(begin, input)))
+                    Ok(Item::Verbatim(verbatim::between(&begin, input)))
                 }
-            } else if lookahead.peek(Token![macro]) {
-                input.advance_to(&ahead);
-                parse_macro2(begin, vis, input)
-            } else if vis.is_inherited()
-                && (lookahead.peek(Ident)
-                    || lookahead.peek(Token![self])
-                    || lookahead.peek(Token![super])
-                    || lookahead.peek(Token![crate])
-                    || lookahead.peek(Token![::]))
-            {
-                input.parse().map(Item::Macro)
+            } else if lookahead.peek(Token![extern]) {
+                input.parse().map(Item::ForeignMod)
+            } else if lookahead.peek(Token![mod]) {
+                input.parse().map(Item::Mod)
             } else {
                 Err(lookahead.error())
-            }?;
+            }
+        } else if lookahead.peek(Token![mod]) {
+            input.parse().map(Item::Mod)
+        } else if lookahead.peek(Token![type]) {
+            parse_item_type(begin, input)
+        } else if lookahead.peek(Token![struct]) {
+            input.parse().map(Item::Struct)
+        } else if lookahead.peek(Token![enum]) {
+            input.parse().map(Item::Enum)
+        } else if lookahead.peek(Token![union]) && ahead.peek2(Ident) {
+            input.parse().map(Item::Union)
+        } else if lookahead.peek(Token![trait]) {
+            input.call(parse_trait_or_trait_alias)
+        } else if lookahead.peek(Token![auto]) && ahead.peek2(Token![trait]) {
+            input.parse().map(Item::Trait)
+        } else if lookahead.peek(Token![impl])
+            || lookahead.peek(Token![default]) && !ahead.peek2(Token![!])
+        {
+            let allow_verbatim_impl = true;
+            if let Some(item) = parse_impl(input, allow_verbatim_impl)? {
+                Ok(Item::Impl(item))
+            } else {
+                Ok(Item::Verbatim(verbatim::between(&begin, input)))
+            }
+        } else if lookahead.peek(Token![macro]) {
+            input.advance_to(&ahead);
+            parse_macro2(begin, vis, input)
+        } else if vis.is_inherited()
+            && (lookahead.peek(Ident)
+                || lookahead.peek(Token![self])
+                || lookahead.peek(Token![super])
+                || lookahead.peek(Token![crate])
+                || lookahead.peek(Token![::]))
+        {
+            input.parse().map(Item::Macro)
+        } else {
+            Err(lookahead.error())
+        }?;
 
-            attrs.extend(item.replace_attrs(Vec::new()));
-            item.replace_attrs(attrs);
-            Ok(item)
-        }
+        attrs.extend(item.replace_attrs(Vec::new()));
+        item.replace_attrs(attrs);
+        Ok(item)
     }
 
     struct FlexibleItemType {
@@ -1219,7 +1227,7 @@ pub(crate) mod parsing {
             return Err(lookahead.error());
         }
 
-        Ok(Item::Verbatim(verbatim::between(begin, input)))
+        Ok(Item::Verbatim(verbatim::between(&begin, input)))
     }
 
     #[cfg_attr(doc_cfg, doc(cfg(feature = "parsing")))]
@@ -1340,22 +1348,28 @@ pub(crate) mod parsing {
             let content;
             let brace_token = braced!(content in input);
             let mut items = Punctuated::new();
-            let mut has_crate_root_in_path = false;
+            let mut has_any_crate_root_in_path = false;
             loop {
                 if content.is_empty() {
                     break;
                 }
-                has_crate_root_in_path |=
+                let this_tree_starts_with_crate_root =
                     allow_crate_root_in_path && content.parse::<Option<Token![::]>>()?.is_some();
-                let tree: UseTree = content.parse()?;
-                items.push_value(tree);
+                has_any_crate_root_in_path |= this_tree_starts_with_crate_root;
+                match parse_use_tree(
+                    &content,
+                    allow_crate_root_in_path && !this_tree_starts_with_crate_root,
+                )? {
+                    Some(tree) => items.push_value(tree),
+                    None => has_any_crate_root_in_path = true,
+                }
                 if content.is_empty() {
                     break;
                 }
                 let comma: Token![,] = content.parse()?;
                 items.push_punct(comma);
             }
-            if has_crate_root_in_path {
+            if has_any_crate_root_in_path {
                 Ok(None)
             } else {
                 Ok(Some(UseTree::Group(UseGroup { brace_token, items })))
@@ -1753,7 +1767,7 @@ pub(crate) mod parsing {
                     content.call(Attribute::parse_inner)?;
                     content.call(Block::parse_within)?;
 
-                    Ok(ForeignItem::Verbatim(verbatim::between(begin, input)))
+                    Ok(ForeignItem::Verbatim(verbatim::between(&begin, input)))
                 } else {
                     Ok(ForeignItem::Fn(ForeignItemFn {
                         attrs: Vec::new(),
@@ -1773,7 +1787,7 @@ pub(crate) mod parsing {
                     input.parse::<Token![=]>()?;
                     input.parse::<Expr>()?;
                     input.parse::<Token![;]>()?;
-                    Ok(ForeignItem::Verbatim(verbatim::between(begin, input)))
+                    Ok(ForeignItem::Verbatim(verbatim::between(&begin, input)))
                 } else {
                     Ok(ForeignItem::Static(ForeignItemStatic {
                         attrs: Vec::new(),
@@ -1882,7 +1896,7 @@ pub(crate) mod parsing {
         )?;
 
         if colon_token.is_some() || ty.is_some() {
-            Ok(ForeignItem::Verbatim(verbatim::between(begin, input)))
+            Ok(ForeignItem::Verbatim(verbatim::between(&begin, input)))
         } else {
             Ok(ForeignItem::Type(ForeignItemType {
                 attrs: Vec::new(),
@@ -1952,7 +1966,7 @@ pub(crate) mod parsing {
 
         let (eq_token, ty) = match ty {
             Some(ty) if colon_token.is_none() => ty,
-            _ => return Ok(Item::Verbatim(verbatim::between(begin, input))),
+            _ => return Ok(Item::Verbatim(verbatim::between(&begin, input))),
         };
 
         Ok(Item::Type(ItemType {
@@ -2240,7 +2254,7 @@ pub(crate) mod parsing {
 
             match (vis, defaultness) {
                 (Visibility::Inherited, None) => {}
-                _ => return Ok(TraitItem::Verbatim(verbatim::between(begin, input))),
+                _ => return Ok(TraitItem::Verbatim(verbatim::between(&begin, input))),
             }
 
             let item_attrs = match &mut item {
@@ -2358,7 +2372,7 @@ pub(crate) mod parsing {
         )?;
 
         if vis.is_some() {
-            Ok(TraitItem::Verbatim(verbatim::between(begin, input)))
+            Ok(TraitItem::Verbatim(verbatim::between(&begin, input)))
         } else {
             Ok(TraitItem::Type(TraitItemType {
                 attrs: Vec::new(),
@@ -2471,7 +2485,7 @@ pub(crate) mod parsing {
             self_ty = if polarity.is_none() {
                 first_ty
             } else {
-                Type::Verbatim(verbatim::between(begin, input))
+                Type::Verbatim(verbatim::between(&begin, input))
             };
         }
 
@@ -2525,7 +2539,7 @@ pub(crate) mod parsing {
                 if let Some(item) = parse_impl_item_fn(input, allow_omitted_body)? {
                     Ok(ImplItem::Fn(item))
                 } else {
-                    Ok(ImplItem::Verbatim(verbatim::between(begin, input)))
+                    Ok(ImplItem::Verbatim(verbatim::between(&begin, input)))
                 }
             } else if lookahead.peek(Token![const]) {
                 input.advance_to(&ahead);
@@ -2554,7 +2568,7 @@ pub(crate) mod parsing {
                     }));
                 } else {
                     input.parse::<Token![;]>()?;
-                    return Ok(ImplItem::Verbatim(verbatim::between(begin, input)));
+                    return Ok(ImplItem::Verbatim(verbatim::between(&begin, input)));
                 }
             } else if lookahead.peek(Token![type]) {
                 parse_impl_item_type(begin, input)
@@ -2700,7 +2714,7 @@ pub(crate) mod parsing {
 
         let (eq_token, ty) = match ty {
             Some(ty) if colon_token.is_none() => ty,
-            _ => return Ok(ImplItem::Verbatim(verbatim::between(begin, input))),
+            _ => return Ok(ImplItem::Verbatim(verbatim::between(&begin, input))),
         };
 
         Ok(ImplItem::Type(ImplItemType {
diff --git a/vendor/syn/src/lib.rs b/vendor/syn/src/lib.rs
index aeeb37ef9..b9fd8073f 100644
--- a/vendor/syn/src/lib.rs
+++ b/vendor/syn/src/lib.rs
@@ -249,7 +249,7 @@
 //!   dynamic library libproc_macro from rustc toolchain.
 
 // Syn types in rustdoc of other crates get linked to here.
-#![doc(html_root_url = "https://docs.rs/syn/2.0.18")]
+#![doc(html_root_url = "https://docs.rs/syn/2.0.28")]
 #![cfg_attr(doc_cfg, feature(doc_cfg))]
 #![allow(non_camel_case_types)]
 #![allow(
@@ -373,6 +373,7 @@ pub use crate::generics::{
 pub use crate::generics::{ImplGenerics, Turbofish, TypeGenerics};
 
 mod ident;
+#[doc(inline)]
 pub use crate::ident::Ident;
 
 #[cfg(feature = "full")]
@@ -388,9 +389,11 @@ pub use crate::item::{
 };
 
 mod lifetime;
+#[doc(inline)]
 pub use crate::lifetime::Lifetime;
 
 mod lit;
+#[doc(inline)]
 pub use crate::lit::{
     Lit, LitBool, LitByte, LitByteStr, LitChar, LitFloat, LitInt, LitStr, StrStyle,
 };
diff --git a/vendor/syn/src/lit.rs b/vendor/syn/src/lit.rs
index 662ef8b22..4f36cf50b 100644
--- a/vendor/syn/src/lit.rs
+++ b/vendor/syn/src/lit.rs
@@ -228,7 +228,17 @@ impl LitStr {
         let mut tokens = TokenStream::from_str(&self.value())?;
         tokens = respan_token_stream(tokens, self.span());
 
-        parser.parse2(tokens)
+        let result = parser.parse2(tokens)?;
+
+        let suffix = self.suffix();
+        if !suffix.is_empty() {
+            return Err(Error::new(
+                self.span(),
+                format!("unexpected suffix `{}` on string literal", suffix),
+            ));
+        }
+
+        Ok(result)
     }
 
     pub fn span(&self) -> Span {
@@ -1166,7 +1176,7 @@ mod value {
                         b'x' => {
                             let (byte, rest) = backslash_x(s);
                             s = rest;
-                            assert!(byte <= 0x80, "Invalid \\x byte in string literal");
+                            assert!(byte <= 0x7F, "Invalid \\x byte in string literal");
                             char::from_u32(u32::from(byte)).unwrap()
                         }
                         b'u' => {
@@ -1273,8 +1283,7 @@ mod value {
                         b'"' => b'"',
                         b'\r' | b'\n' => loop {
                             let byte = byte(v, 0);
-                            let ch = char::from_u32(u32::from(byte)).unwrap();
-                            if ch.is_whitespace() {
+                            if matches!(byte, b' ' | b'\t' | b'\n' | b'\r') {
                                 v = &v[1..];
                             } else {
                                 continue 'outer;
diff --git a/vendor/syn/src/pat.rs b/vendor/syn/src/pat.rs
index 2e6376b2f..df7da5bbe 100644
--- a/vendor/syn/src/pat.rs
+++ b/vendor/syn/src/pat.rs
@@ -422,7 +422,7 @@ pub(crate) mod parsing {
     fn pat_box(begin: ParseBuffer, input: ParseStream) -> Result<Pat> {
         input.parse::<Token![box]>()?;
         Pat::parse_single(input)?;
-        Ok(Pat::Verbatim(verbatim::between(begin, input)))
+        Ok(Pat::Verbatim(verbatim::between(&begin, input)))
     }
 
     fn pat_ident(input: ParseStream) -> Result<PatIdent> {
@@ -544,7 +544,7 @@ pub(crate) mod parsing {
         };
 
         let pat = if boxed.is_some() {
-            Pat::Verbatim(verbatim::between(begin, input))
+            Pat::Verbatim(verbatim::between(&begin, input))
         } else {
             Pat::Ident(PatIdent {
                 attrs: Vec::new(),
@@ -762,7 +762,7 @@ pub(crate) mod parsing {
         content.call(Attribute::parse_inner)?;
         content.call(Block::parse_within)?;
 
-        Ok(verbatim::between(begin, input))
+        Ok(verbatim::between(&begin, input))
     }
 }
 
diff --git a/vendor/syn/src/path.rs b/vendor/syn/src/path.rs
index e99a3f87d..883f179f5 100644
--- a/vendor/syn/src/path.rs
+++ b/vendor/syn/src/path.rs
@@ -53,8 +53,9 @@ impl Path {
     ///     }
     /// }
     /// ```
-    pub fn is_ident<I: ?Sized>(&self, ident: &I) -> bool
+    pub fn is_ident<I>(&self, ident: &I) -> bool
     where
+        I: ?Sized,
         Ident: PartialEq<I>,
     {
         match self.get_ident() {
@@ -368,7 +369,6 @@ pub(crate) mod parsing {
             return Ok(Expr::Lit(lit));
         }
 
-        #[cfg(feature = "full")]
         if input.peek(Ident) {
             let ident: Ident = input.parse()?;
             return Ok(Expr::Path(ExprPath {
@@ -391,7 +391,7 @@ pub(crate) mod parsing {
                 let content;
                 braced!(content in input);
                 content.parse::<Expr>()?;
-                let verbatim = verbatim::between(begin, input);
+                let verbatim = verbatim::between(&begin, input);
                 return Ok(Expr::Verbatim(verbatim));
             }
         }
@@ -649,6 +649,10 @@ pub(crate) mod parsing {
 pub(crate) mod printing {
     use super::*;
     use crate::print::TokensOrDefault;
+    #[cfg(feature = "parsing")]
+    use crate::spanned::Spanned;
+    #[cfg(feature = "parsing")]
+    use proc_macro2::Span;
     use proc_macro2::TokenStream;
     use quote::ToTokens;
     use std::cmp;
@@ -692,10 +696,21 @@ pub(crate) mod printing {
                 GenericArgument::Lifetime(lt) => lt.to_tokens(tokens),
                 GenericArgument::Type(ty) => ty.to_tokens(tokens),
                 GenericArgument::Const(expr) => match expr {
-                    Expr::Lit(_) => expr.to_tokens(tokens),
+                    Expr::Lit(expr) => expr.to_tokens(tokens),
+
+                    Expr::Path(expr)
+                        if expr.attrs.is_empty()
+                            && expr.qself.is_none()
+                            && expr.path.get_ident().is_some() =>
+                    {
+                        expr.to_tokens(tokens);
+                    }
 
                     #[cfg(feature = "full")]
-                    Expr::Block(_) => expr.to_tokens(tokens),
+                    Expr::Block(expr) => expr.to_tokens(tokens),
+
+                    #[cfg(not(feature = "full"))]
+                    Expr::Verbatim(expr) => expr.to_tokens(tokens),
 
                     // ERROR CORRECTION: Add braces to make sure that the
                     // generated code is valid.
@@ -826,4 +841,21 @@ pub(crate) mod printing {
             segment.to_tokens(tokens);
         }
     }
+
+    #[cfg(feature = "parsing")]
+    #[cfg_attr(doc_cfg, doc(cfg(all(feature = "parsing", feature = "printing"))))]
+    impl Spanned for QSelf {
+        fn span(&self) -> Span {
+            struct QSelfDelimiters<'a>(&'a QSelf);
+
+            impl<'a> ToTokens for QSelfDelimiters<'a> {
+                fn to_tokens(&self, tokens: &mut TokenStream) {
+                    self.0.lt_token.to_tokens(tokens);
+                    self.0.gt_token.to_tokens(tokens);
+                }
+            }
+
+            QSelfDelimiters(self).span()
+        }
+    }
 }
diff --git a/vendor/syn/src/punctuated.rs b/vendor/syn/src/punctuated.rs
index a4278081c..3ea8a1d4e 100644
--- a/vendor/syn/src/punctuated.rs
+++ b/vendor/syn/src/punctuated.rs
@@ -369,6 +369,11 @@ where
             last: self.last.clone(),
         }
     }
+
+    fn clone_from(&mut self, other: &Self) {
+        self.inner.clone_from(&other.inner);
+        self.last.clone_from(&other.last);
+    }
 }
 
 #[cfg(feature = "extra-traits")]
diff --git a/vendor/syn/src/spanned.rs b/vendor/syn/src/spanned.rs
index 7e101d264..98aa0aa1e 100644
--- a/vendor/syn/src/spanned.rs
+++ b/vendor/syn/src/spanned.rs
@@ -112,4 +112,7 @@ mod private {
 
     pub trait Sealed {}
     impl<T: ?Sized + ToTokens> Sealed for T {}
+
+    #[cfg(any(feature = "full", feature = "derive"))]
+    impl Sealed for crate::QSelf {}
 }
diff --git a/vendor/syn/src/stmt.rs b/vendor/syn/src/stmt.rs
index b5434f7ce..fb67feccb 100644
--- a/vendor/syn/src/stmt.rs
+++ b/vendor/syn/src/stmt.rs
@@ -180,7 +180,8 @@ pub(crate) mod parsing {
     }
 
     fn parse_stmt(input: ParseStream, allow_nosemi: AllowNoSemi) -> Result<Stmt> {
-        let mut attrs = input.call(Attribute::parse_outer)?;
+        let begin = input.fork();
+        let attrs = input.call(Attribute::parse_outer)?;
 
         // brace-style macros; paren and bracket macros get parsed as
         // expression statements.
@@ -238,9 +239,7 @@ pub(crate) mod parsing {
             || input.peek(Token![macro])
             || is_item_macro
         {
-            let mut item: Item = input.parse()?;
-            attrs.extend(item.replace_attrs(Vec::new()));
-            item.replace_attrs(attrs);
+            let item = item::parsing::parse_rest_of_item(begin, attrs, input)?;
             Ok(Stmt::Item(item))
         } else {
             stmt_expr(input, allow_nosemi, attrs)
diff --git a/vendor/syn/src/thread.rs b/vendor/syn/src/thread.rs
index 63fdea834..b33d248af 100644
--- a/vendor/syn/src/thread.rs
+++ b/vendor/syn/src/thread.rs
@@ -12,6 +12,9 @@ pub(crate) struct ThreadBound<T> {
 unsafe impl<T> Sync for ThreadBound<T> {}
 
 // Send bound requires Copy, as otherwise Drop could run in the wrong place.
+//
+// Today Copy and Drop are mutually exclusive so `T: Copy` implies `T: !Drop`.
+// This impl needs to be revisited if that restriction is relaxed in the future.
 unsafe impl<T: Copy> Send for ThreadBound<T> {}
 
 impl<T> ThreadBound<T> {
@@ -40,11 +43,18 @@ impl<T: Debug> Debug for ThreadBound<T> {
     }
 }
 
-impl<T: Clone> Clone for ThreadBound<T> {
+// Copy the bytes of T, even if the currently running thread is the "wrong"
+// thread. This is fine as long as the original thread is not simultaneously
+// mutating this value via interior mutability, which would be a data race.
+//
+// Currently `T: Copy` is sufficient to guarantee that T contains no interior
+// mutability, because _all_ interior mutability in Rust is built on
+// std::cell::UnsafeCell, which has no Copy impl. This impl needs to be
+// revisited if that restriction is relaxed in the future.
+impl<T: Copy> Copy for ThreadBound<T> {}
+
+impl<T: Copy> Clone for ThreadBound<T> {
     fn clone(&self) -> Self {
-        ThreadBound {
-            value: self.value.clone(),
-            thread_id: self.thread_id,
-        }
+        *self
     }
 }
diff --git a/vendor/syn/src/ty.rs b/vendor/syn/src/ty.rs
index 9282ba4e6..0f41fe4fa 100644
--- a/vendor/syn/src/ty.rs
+++ b/vendor/syn/src/ty.rs
@@ -525,7 +525,7 @@ pub(crate) mod parsing {
             let star_token: Option<Token![*]> = input.parse()?;
             let bounds = TypeTraitObject::parse_bounds(dyn_span, input, allow_plus)?;
             return Ok(if star_token.is_some() {
-                Type::Verbatim(verbatim::between(begin, input))
+                Type::Verbatim(verbatim::between(&begin, input))
             } else {
                 Type::TraitObject(TypeTraitObject {
                     dyn_token: Some(dyn_token),
@@ -947,7 +947,7 @@ pub(crate) mod parsing {
             Some(ty) if !has_mut_self => ty,
             _ => {
                 name = None;
-                Type::Verbatim(verbatim::between(begin, input))
+                Type::Verbatim(verbatim::between(&begin, input))
             }
         };
 
diff --git a/vendor/syn/src/verbatim.rs b/vendor/syn/src/verbatim.rs
index 436d87343..54dc1cfa0 100644
--- a/vendor/syn/src/verbatim.rs
+++ b/vendor/syn/src/verbatim.rs
@@ -1,9 +1,9 @@
-use crate::parse::{ParseBuffer, ParseStream};
+use crate::parse::ParseStream;
 use proc_macro2::{Delimiter, TokenStream};
 use std::cmp::Ordering;
 use std::iter;
 
-pub(crate) fn between<'a>(begin: ParseBuffer<'a>, end: ParseStream<'a>) -> TokenStream {
+pub(crate) fn between<'a>(begin: ParseStream<'a>, end: ParseStream<'a>) -> TokenStream {
     let end = end.cursor();
     let mut cursor = begin.cursor();
     assert!(crate::buffer::same_buffer(end, cursor));
diff --git a/vendor/syn/tests/common/eq.rs b/vendor/syn/tests/common/eq.rs
index 8ca04b6a2..7fe75d49b 100644
--- a/vendor/syn/tests/common/eq.rs
+++ b/vendor/syn/tests/common/eq.rs
@@ -457,7 +457,7 @@ spanless_eq_struct!(BareFnTy; unsafety ext generic_params decl decl_span);
 spanless_eq_struct!(BindingAnnotation; 0 1);
 spanless_eq_struct!(Block; stmts id rules span tokens could_be_bare_literal);
 spanless_eq_struct!(Closure; binder capture_clause constness asyncness movability fn_decl body !fn_decl_span !fn_arg_span);
-spanless_eq_struct!(ConstItem; defaultness ty expr);
+spanless_eq_struct!(ConstItem; defaultness generics ty expr);
 spanless_eq_struct!(Crate; attrs items spans id is_placeholder);
 spanless_eq_struct!(DelimArgs; dspan delim tokens);
 spanless_eq_struct!(EnumDef; variants);
@@ -586,8 +586,8 @@ spanless_eq_enum!(ExprKind; Array(0) ConstBlock(0) Call(0 1) MethodCall(0)
     Block(0 1) Async(0 1) Await(0 1) TryBlock(0) Assign(0 1 2) AssignOp(0 1 2)
     Field(0 1) Index(0 1) Underscore Range(0 1 2) Path(0 1) AddrOf(0 1 2)
     Break(0 1) Continue(0) Ret(0) InlineAsm(0) OffsetOf(0 1) MacCall(0)
-    Struct(0) Repeat(0 1) Paren(0) Try(0) Yield(0) Yeet(0) IncludedBytes(0)
-    FormatArgs(0) Err);
+    Struct(0) Repeat(0 1) Paren(0) Try(0) Yield(0) Yeet(0) Become(0)
+    IncludedBytes(0) FormatArgs(0) Err);
 spanless_eq_enum!(InlineAsmOperand; In(reg expr) Out(reg late expr)
     InOut(reg late expr) SplitInOut(reg late in_expr out_expr) Const(anon_const)
     Sym(sym));
diff --git a/vendor/syn/tests/macros/mod.rs b/vendor/syn/tests/macros/mod.rs
index 5ca88b083..3bfbe0389 100644
--- a/vendor/syn/tests/macros/mod.rs
+++ b/vendor/syn/tests/macros/mod.rs
@@ -38,14 +38,20 @@ macro_rules! snapshot_impl {
         let $expr = crate::macros::Tokens::parse::<$t>($expr).unwrap();
         let debug = crate::macros::debug::Lite(&$expr);
         if !cfg!(miri) {
-            insta::assert_debug_snapshot!(debug, @$snapshot);
+            #[allow(clippy::needless_raw_string_hashes)] // https://github.com/mitsuhiko/insta/issues/389
+            {
+                insta::assert_debug_snapshot!(debug, @$snapshot);
+            }
         }
     };
     (($($expr:tt)*) as $t:ty, @$snapshot:literal) => {{
         let syntax_tree = crate::macros::Tokens::parse::<$t>($($expr)*).unwrap();
         let debug = crate::macros::debug::Lite(&syntax_tree);
         if !cfg!(miri) {
-            insta::assert_debug_snapshot!(debug, @$snapshot);
+            #[allow(clippy::needless_raw_string_hashes)]
+            {
+                insta::assert_debug_snapshot!(debug, @$snapshot);
+            }
         }
         syntax_tree
     }};
@@ -53,7 +59,10 @@ macro_rules! snapshot_impl {
         let syntax_tree = $($expr)*;
         let debug = crate::macros::debug::Lite(&syntax_tree);
         if !cfg!(miri) {
-            insta::assert_debug_snapshot!(debug, @$snapshot);
+            #[allow(clippy::needless_raw_string_hashes)]
+            {
+                insta::assert_debug_snapshot!(debug, @$snapshot);
+            }
         }
         syntax_tree
     }};
diff --git a/vendor/syn/tests/repo/mod.rs b/vendor/syn/tests/repo/mod.rs
index cec42a6c6..780ad823b 100644
--- a/vendor/syn/tests/repo/mod.rs
+++ b/vendor/syn/tests/repo/mod.rs
@@ -13,10 +13,17 @@ use std::path::{Path, PathBuf};
 use tar::Archive;
 use walkdir::{DirEntry, WalkDir};
 
-const REVISION: &str = "5e1d3299a290026b85787bc9c7e72bcc53ac283f";
+const REVISION: &str = "85bf07972a1041b9e25393b803d0e006bec3eaaf";
 
 #[rustfmt::skip]
 static EXCLUDE_FILES: &[&str] = &[
+    // CStr literals (c"…") are not yet supported by rustc's lexer
+    // https://github.com/rust-lang/rust/issues/113333
+    "src/tools/clippy/tests/ui/needless_raw_string_hashes.rs",
+    "src/tools/rust-analyzer/crates/parser/test_data/parser/inline/ok/0085_expr_literals.rs",
+    "src/tools/rust-analyzer/crates/parser/test_data/parser/inline/ok/0085_expr_literals.rs",
+    "tests/ui/explicit-tail-calls/return-lifetime-sub.rs",
+
     // TODO: non-lifetime binders: `where for<'a, T> &'a Struct<T>: Trait`
     // https://github.com/dtolnay/syn/issues/1435
     "tests/rustdoc-json/non_lifetime_binders.rs",
@@ -24,6 +31,7 @@ static EXCLUDE_FILES: &[&str] = &[
 
     // TODO: return type notation: `where T: Trait<method(): Send>`
     // https://github.com/dtolnay/syn/issues/1434
+    "src/tools/rust-analyzer/crates/parser/test_data/parser/inline/ok/0208_associated_return_type_bounds.rs",
     "tests/ui/associated-type-bounds/return-type-notation/basic.rs",
     "tests/ui/feature-gates/feature-gate-return_type_notation.rs",
 
@@ -37,11 +45,14 @@ static EXCLUDE_FILES: &[&str] = &[
     // Need at least one trait in impl Trait, no such type as impl 'static
     "tests/ui/type-alias-impl-trait/generic_type_does_not_live_long_enough.rs",
 
+    // Negative polarity trait bound: `where T: !Copy`
+    "src/tools/rustfmt/tests/target/negative-bounds.rs",
+
     // Lifetime bound inside for<>: `T: ~const ?for<'a: 'b> Trait<'a>`
-    "tests/ui/rfc-2632-const-trait-impl/tilde-const-syntax.rs",
+    "tests/ui/rfcs/rfc-2632-const-trait-impl/tilde-const-syntax.rs",
 
     // Const impl that is not a trait impl: `impl ~const T {}`
-    "tests/ui/rfc-2632-const-trait-impl/syntax.rs",
+    "tests/ui/rfcs/rfc-2632-const-trait-impl/syntax.rs",
 
     // Deprecated anonymous parameter syntax in traits
     "src/tools/rustfmt/tests/source/trait.rs",
@@ -63,6 +74,7 @@ static EXCLUDE_FILES: &[&str] = &[
     "src/tools/rust-analyzer/crates/parser/test_data/parser/inline/ok/0004_value_parameters_no_patterns.rs",
     "src/tools/rust-analyzer/crates/parser/test_data/parser/inline/ok/0104_path_fn_trait_args.rs",
     "src/tools/rust-analyzer/crates/parser/test_data/parser/inline/ok/0202_typepathfn_with_coloncolon.rs",
+    "src/tools/rust-analyzer/crates/parser/test_data/parser/inline/ok/0209_bare_dyn_types_with_paren_as_generic_args.rs",
     "src/tools/rustfmt/tests/source/attrib.rs",
     "src/tools/rustfmt/tests/source/closure.rs",
     "src/tools/rustfmt/tests/source/existential_type.rs",
@@ -85,8 +97,8 @@ static EXCLUDE_FILES: &[&str] = &[
     "tests/codegen-units/item-collection/non-generic-closures.rs",
     "tests/debuginfo/recursive-enum.rs",
     "tests/pretty/closure-reform-pretty.rs",
-    "tests/run-make-fulldeps/reproducible-build-2/reproducible-build.rs",
-    "tests/run-make-fulldeps/reproducible-build/reproducible-build.rs",
+    "tests/run-make/reproducible-build-2/reproducible-build.rs",
+    "tests/run-make/reproducible-build/reproducible-build.rs",
     "tests/ui/auxiliary/typeid-intrinsic-aux1.rs",
     "tests/ui/auxiliary/typeid-intrinsic-aux2.rs",
     "tests/ui/impl-trait/generic-with-implicit-hrtb-without-dyn.rs",
@@ -95,10 +107,6 @@ static EXCLUDE_FILES: &[&str] = &[
     "tests/ui/lifetimes/bare-trait-object.rs",
     "tests/ui/parser/bounds-obj-parens.rs",
 
-    // Old type ascription expression syntax
-    "src/tools/rustfmt/tests/source/type-ascription.rs",
-    "src/tools/rustfmt/tests/target/type-ascription.rs",
-
     // Obsolete box syntax
     "src/tools/rust-analyzer/crates/parser/test_data/parser/inline/ok/0132_box_expr.rs",
 
diff --git a/vendor/syn/tests/test_expr.rs b/vendor/syn/tests/test_expr.rs
index c7230c6dc..5d529bf14 100644
--- a/vendor/syn/tests/test_expr.rs
+++ b/vendor/syn/tests/test_expr.rs
@@ -85,7 +85,7 @@ fn test_tuple_multi_index() {
         assert_eq!(expected, syn::parse_str(input).unwrap());
     }
 
-    for tokens in vec![
+    for tokens in [
         quote!(tuple.0.0),
         quote!(tuple .0.0),
         quote!(tuple. 0.0),
diff --git a/vendor/syn/tests/test_round_trip.rs b/vendor/syn/tests/test_round_trip.rs
index 0ef47b20f..c0af30d29 100644
--- a/vendor/syn/tests/test_round_trip.rs
+++ b/vendor/syn/tests/test_round_trip.rs
@@ -33,6 +33,7 @@ use rustc_errors::{translation, Diagnostic, PResult};
 use rustc_session::parse::ParseSess;
 use rustc_span::source_map::FilePathMapping;
 use rustc_span::FileName;
+use std::borrow::Cow;
 use std::fs;
 use std::panic;
 use std::path::Path;
@@ -154,7 +155,7 @@ fn librustc_parse(content: String, sess: &ParseSess) -> PResult<Crate> {
     parse::parse_crate_from_source_str(name, content, sess)
 }
 
-fn translate_message(diagnostic: &Diagnostic) -> String {
+fn translate_message(diagnostic: &Diagnostic) -> Cow<'static, str> {
     thread_local! {
         static FLUENT_BUNDLE: LazyFallbackBundle = {
             let locale_resources = rustc_driver::DEFAULT_LOCALE_RESOURCES.to_vec();
@@ -186,7 +187,7 @@ fn translate_message(diagnostic: &Diagnostic) -> String {
         let mut err = Vec::new();
         let translated = fluent_bundle.format_pattern(value, Some(&args), &mut err);
         assert!(err.is_empty());
-        translated.into_owned()
+        Cow::Owned(translated.into_owned())
     })
 }