feat: Migrate to stable rust (#300)

Cargo.lock

@@ -666,7 +666,6 @@ name = "fff-query-parser"
 version = "0.2.4"
 dependencies = [
  "criterion",
- "smallvec",
  "zlob",
 ]
 

Cargo.toml

@@ -43,11 +43,7 @@ parking_lot = "0.12"
 pathdiff = "0.2.1"
 rayon = "1.8.0"
 regex = "1.11"
-smallvec = { version = "1.13", features = [
+smallvec = { version = "1.13", features = ["const_generics", "union"] }
-  "const_generics",
-  "union",
-  "may_dangle",
-] }
 thiserror = "2.0.10"
 tracing = "0.1"
 

crates/fff-query-parser/Cargo.toml

@@ -14,7 +14,6 @@ default = []
 zlob = ["dep:zlob"]
 
 [dependencies]
-smallvec = { workspace = true }
 zlob = { workspace = true, optional = true }
 
 [dev-dependencies]

crates/fff-query-parser/src/constraints.rs

@@ -1,5 +1,3 @@
-use smallvec::SmallVec;
-
 /// Constraint types that can be extracted from a query
 #[derive(Debug, Clone, PartialEq, Eq)]
 pub enum Constraint<'a> {
@@ -45,5 +43,5 @@ pub enum GitStatusFilter {
     Unmodified,
 }
 
-/// Stack-allocated buffer for text parts (up to 16 parts without heap allocation)
+/// Buffer for text parts during query parsing.
-pub(crate) type TextPartsBuffer<'a> = SmallVec<[&'a str; 16]>;
+pub(crate) type TextPartsBuffer<'a> = Vec<&'a str>;

crates/fff-query-parser/src/lib.rs

@@ -1,8 +1,7 @@
-//! Fast, zero-allocation query parser for file search
+//! Fast query parser for file search
 //!
 //! This parser takes a search query and extracts structured constraints
 //! while preserving text for fuzzy matching. Designed for maximum performance:
-//! - Zero allocations for queries with ≤8 constraints (SmallVec)
 //! - Single-pass parsing with minimal branching
 //! - Stack-allocated string buffers
 //!
@@ -51,10 +50,7 @@ pub use constraints::{Constraint, GitStatusFilter};
 pub use location::Location;
 pub use parser::{FFFQuery, FuzzyQuery, QueryParser};
 
-// Re-export SmallVec for convenience
+pub type ConstraintVec<'a> = Vec<Constraint<'a>>;
-pub use smallvec::SmallVec;
-
-pub type ConstraintVec<'a> = SmallVec<[Constraint<'a>; 8]>;
 
 #[cfg(test)]
 mod tests {
@@ -212,11 +208,10 @@ mod tests {
     }
 
     #[test]
-    fn test_no_heap_allocation_for_small_queries() {
+    fn test_small_constraint_count() {
         let parser = QueryParser::default();
         let result = parser.parse("*.rs *.toml !test");
-        // SmallVec should not have spilled to heap
+        assert_eq!(result.constraints.len(), 3);
-        assert!(!result.constraints.spilled());
     }
 
     #[test]

crates/fff-query-parser/src/parser.rs

@@ -1105,7 +1105,7 @@ mod tests {
         ));
         assert_eq!(
             result.fuzzy_query,
-            FuzzyQuery::Parts(smallvec::smallvec!["src", "components"])
+            FuzzyQuery::Parts(vec!["src", "components"])
         );
     }
 

flake.lock

@@ -2,11 +2,11 @@
   "nodes": {
     "crane": {
       "locked": {
-        "lastModified": 1773189535,
+        "lastModified": 1773857772,
-        "narHash": "sha256-E1G/Or6MWeP+L6mpQ0iTFLpzSzlpGrITfU2220Gq47g=",
+        "narHash": "sha256-5xsK26KRHf0WytBtsBnQYC/lTWDhQuT57HJ7SzuqZcM=",
         "owner": "ipetkov",
         "repo": "crane",
-        "rev": "6fa2fb4cf4a89ba49fc9dd5a3eb6cde99d388269",
+        "rev": "b556d7bbae5ff86e378451511873dfd07e4504cd",
         "type": "github"
       },
       "original": {
@@ -35,11 +35,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1773597492,
+        "lastModified": 1773628058,
-        "narHash": "sha256-hQ284SkIeNaeyud+LS0WVLX+WL2rxcVZLFEaK0e03zg=",
+        "narHash": "sha256-hpXH0z3K9xv0fHaje136KY872VT2T5uwxtezlAskQgY=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "a07d4ce6bee67d7c838a8a5796e75dff9caa21ef",
+        "rev": "f8573b9c935cfaa162dd62cc9e75ae2db86f85df",
         "type": "github"
       },
       "original": {
@@ -64,11 +64,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1773716879,
+        "lastModified": 1773803479,
-        "narHash": "sha256-vXCTasEzzTTd0ZGEuyle20H2hjRom66JeNr7i2ktHD0=",
+        "narHash": "sha256-GD6i1F2vrSxbsmbS92+8+x3DbHOJ+yrS78Pm4xigW4M=",
         "owner": "oxalica",
         "repo": "rust-overlay",
-        "rev": "1a9ddeb45c5751b800331363703641b84d1f41f0",
+        "rev": "f17186f52e82ec5cf40920b58eac63b78692ac7c",
         "type": "github"
       },
       "original": {

rust-toolchain.toml

@@ -1,10 +1,9 @@
 [toolchain]
-channel = "nightly-2026-03-14"
+channel = "stable"
 components = [
-  "clippy-preview",
+  "clippy",
-  "rustfmt-preview",
+  "rustfmt",
-  "llvm-tools-preview",
+  "llvm-tools",
-  "miri",
   "rust-src",
-  "rust-analyzer-preview",
+  "rust-analyzer",
 ]