Update rustix+fs4 dependency

Cargo.toml

@@ -19,10 +19,10 @@ log = "0.4"
 memmap2 = "0.9.4"
 rand = "0.9"
 rand_distr = "0.5"
-fs4 = "0.12.0"
+fs4 = "0.13.1"
 # fs4 depends on rustix, but pulling this dependency explicitly into the tree
 # to use direct functions on FreeBSD
-rustix = { version = "0", features = [ "fs" ]}
+rustix = { version = "1", features = [ "fs" ]}
 crossbeam-channel = "0.5"
 
 # Binary dependencies

src/lib.rs

@@ -142,7 +142,9 @@ impl Wal {
             dir
         };
 
-        dir.try_lock_exclusive()?;
+        if !dir.try_lock_exclusive()? {
+            return Err(fs4::lock_contended_error());
+        }
 
         // Holds open segments in the directory.
         let mut open_segments: Vec<OpenSegment> = Vec::new();