diff --git a/Cargo.lock b/Cargo.lock
index 632c0b5ed521..5e0813484cf0 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -616,7 +616,7 @@ dependencies = [
  "oorandom",
  "project-model",
  "ra-ap-rustc_abi",
- "ra-ap-rustc_index",
+ "ra-ap-rustc_index 0.52.0",
  "ra-ap-rustc_pattern_analysis",
  "rustc-hash",
  "scoped-tls",
@@ -1260,7 +1260,7 @@ dependencies = [
  "drop_bomb",
  "expect-test",
  "limit",
- "ra-ap-rustc_lexer",
+ "ra-ap-rustc_lexer 0.52.0",
  "sourcegen",
  "stdx",
  "tracing",
@@ -1367,7 +1367,7 @@ dependencies = [
  "paths",
  "proc-macro-api",
  "proc-macro-test",
- "ra-ap-rustc_lexer",
+ "ra-ap-rustc_lexer 0.52.0",
  "span",
  "stdx",
  "tt",
@@ -1486,12 +1486,12 @@ dependencies = [
 
 [[package]]
 name = "ra-ap-rustc_abi"
-version = "0.44.0"
+version = "0.52.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b8709df2a746f055316bc0c62bd30948695a25e734863bf6e1f9755403e010ab"
+checksum = "fe54b7dc88e196597b450ff3e5b7f0ca65ac6108a0075c38b1fa35e8f94ed317"
 dependencies = [
  "bitflags 2.5.0",
- "ra-ap-rustc_index",
+ "ra-ap-rustc_index 0.52.0",
  "tracing",
 ]
 
@@ -1502,7 +1502,18 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9ad68bacffb87dcdbb23a3ce11261375078aaa06b85d348c49f39ffd5510dc20"
 dependencies = [
  "arrayvec",
- "ra-ap-rustc_index_macros",
+ "ra-ap-rustc_index_macros 0.44.0",
+ "smallvec",
+]
+
+[[package]]
+name = "ra-ap-rustc_index"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0d909bfc2f9416da6102899496ea73cf2646d411ed28da38f2b95a26c620be32"
+dependencies = [
+ "arrayvec",
+ "ra-ap-rustc_index_macros 0.52.0",
  "smallvec",
 ]
 
@@ -1518,6 +1529,18 @@ dependencies = [
  "synstructure",
 ]
 
+[[package]]
+name = "ra-ap-rustc_index_macros"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5acb12ee148d25b3acb75b30edeb3dd6a123aed8c4cc4fa2521e5829b8ac6c19"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+ "synstructure",
+]
+
 [[package]]
 name = "ra-ap-rustc_lexer"
 version = "0.44.0"
@@ -1528,14 +1551,24 @@ dependencies = [
  "unicode-xid",
 ]
 
+[[package]]
+name = "ra-ap-rustc_lexer"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "238b016b75284d1614d7b139e3cf6ddf2ccd8278ce8940ac5844bae50b12a45b"
+dependencies = [
+ "unicode-properties",
+ "unicode-xid",
+]
+
 [[package]]
 name = "ra-ap-rustc_parse_format"
 version = "0.44.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0bcf9ff5edbf784b67b8ad5e03a068f1300fcc24062c0d476b3018965135d933"
 dependencies = [
- "ra-ap-rustc_index",
- "ra-ap-rustc_lexer",
+ "ra-ap-rustc_index 0.44.0",
+ "ra-ap-rustc_lexer 0.44.0",
 ]
 
 [[package]]
@@ -1544,7 +1577,7 @@ version = "0.44.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d63d1e1d5b2a13273cee1a10011147418f40e12b70f70578ce1dee0f1cafc334"
 dependencies = [
- "ra-ap-rustc_index",
+ "ra-ap-rustc_index 0.44.0",
  "rustc-hash",
  "rustc_apfloat",
  "smallvec",
@@ -1956,7 +1989,7 @@ dependencies = [
  "itertools",
  "once_cell",
  "parser",
- "ra-ap-rustc_lexer",
+ "ra-ap-rustc_lexer 0.52.0",
  "rayon",
  "rowan",
  "rustc-hash",
diff --git a/Cargo.toml b/Cargo.toml
index 635620cd7b4f..1a0c5b640059 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -85,10 +85,10 @@ tt = { path = "./crates/tt", version = "0.0.0" }
 vfs-notify = { path = "./crates/vfs-notify", version = "0.0.0" }
 vfs = { path = "./crates/vfs", version = "0.0.0" }
 
-ra-ap-rustc_lexer = { version = "0.44.0", default-features = false }
+ra-ap-rustc_lexer = { version = "0.52.0", default-features = false }
 ra-ap-rustc_parse_format = { version = "0.44.0", default-features = false }
-ra-ap-rustc_index = { version = "0.44.0", default-features = false }
-ra-ap-rustc_abi = { version = "0.44.0", default-features = false }
+ra-ap-rustc_index = { version = "0.52.0", default-features = false }
+ra-ap-rustc_abi = { version = "0.52.0", default-features = false }
 ra-ap-rustc_pattern_analysis = { version = "0.44.0", default-features = false }
 
 # local crates that aren't published to crates.io. These should not have versions.
diff --git a/crates/hir-def/src/attr/builtin.rs b/crates/hir-def/src/attr/builtin.rs
index 55b9a1dfdcb9..1fba2e2e4d34 100644
--- a/crates/hir-def/src/attr/builtin.rs
+++ b/crates/hir-def/src/attr/builtin.rs
@@ -207,7 +207,6 @@ pub const INERT_ATTRIBUTES: &[BuiltinAttribute] = &[
     ),
 
     // Entry point:
-    gated!(unix_sigpipe, Normal, template!(Word, NameValueStr: "inherit|sig_ign|sig_dfl"), ErrorFollowing, experimental!(unix_sigpipe)),
     ungated!(start, Normal, template!(Word), WarnFollowing),
     ungated!(no_start, CrateLevel, template!(Word), WarnFollowing),
     ungated!(no_main, CrateLevel, template!(Word), WarnFollowing),
diff --git a/crates/hir-ty/src/layout.rs b/crates/hir-ty/src/layout.rs
index dd949e26c2ab..d9fd029d378c 100644
--- a/crates/hir-ty/src/layout.rs
+++ b/crates/hir-ty/src/layout.rs
@@ -6,8 +6,8 @@ use base_db::salsa::Cycle;
 use chalk_ir::{AdtId, FloatTy, IntTy, TyKind, UintTy};
 use hir_def::{
     layout::{
-        Abi, FieldsShape, Integer, LayoutCalculator, LayoutS, Primitive, ReprOptions, Scalar, Size,
-        StructKind, TargetDataLayout, WrappingRange,
+        Abi, FieldsShape, Float, Integer, LayoutCalculator, LayoutS, Primitive, ReprOptions,
+        Scalar, Size, StructKind, TargetDataLayout, WrappingRange,
     },
     LocalFieldId, StructId,
 };
@@ -264,10 +264,10 @@ pub fn layout_of_ty_query(
             ),
             chalk_ir::Scalar::Float(f) => scalar(
                 dl,
-                match f {
-                    FloatTy::F32 => Primitive::F32,
-                    FloatTy::F64 => Primitive::F64,
-                },
+                Primitive::Float(match f {
+                    FloatTy::F32 => Float::F32,
+                    FloatTy::F64 => Float::F64,
+                }),
             ),
         },
         TyKind::Tuple(len, tys) => {
diff --git a/crates/ide-db/src/generated/lints.rs b/crates/ide-db/src/generated/lints.rs
index d50088e6cf1d..c92d4e78ffa7 100644
--- a/crates/ide-db/src/generated/lints.rs
+++ b/crates/ide-db/src/generated/lints.rs
@@ -3869,7 +3869,7 @@ use std::ops::{Coroutine, CoroutineState};
 use std::pin::Pin;
 
 fn main() {
-    let mut coroutine = || {
+    let mut coroutine = #[coroutine] || {
         yield 1;
         return "foo"
     };
@@ -3901,7 +3901,7 @@ use std::ops::Coroutine;
 use std::pin::Pin;
 
 fn main() {
-    let mut coroutine = || {
+    let mut coroutine = #[coroutine] || {
         println!("2");
         yield;
         println!("4");
@@ -4007,7 +4007,7 @@ use std::pin::Pin;
 
 fn main() {
     let ret = "foo";
-    let mut coroutine = move || {
+    let mut coroutine = #[coroutine] move || {
         yield 1;
         return ret
     };
diff --git a/crates/parser/src/lexed_str.rs b/crates/parser/src/lexed_str.rs
index 48e4c8a6225c..e5fec67de706 100644
--- a/crates/parser/src/lexed_str.rs
+++ b/crates/parser/src/lexed_str.rs
@@ -178,7 +178,7 @@ impl<'a> Converter<'a> {
                 rustc_lexer::TokenKind::Ident => {
                     SyntaxKind::from_keyword(token_text).unwrap_or(IDENT)
                 }
-                rustc_lexer::TokenKind::InvalidIdent => {
+                rustc_lexer::TokenKind::InvalidPrefix | rustc_lexer::TokenKind::InvalidIdent => {
                     err = "Ident contains invalid characters";
                     IDENT
                 }
diff --git a/rust-version b/rust-version
index e69de29bb2d1..ca148cecbebe 100644
--- a/rust-version
+++ b/rust-version
@@ -0,0 +1 @@
+94be5ab448f9bd0209e3ec20fc355643772da7d0