--- a/rust/hg-core/src/revlog/index.rs	Fri Feb 21 13:56:11 2025 -0500
+++ b/rust/hg-core/src/revlog/index.rs	Fri Feb 21 13:58:21 2025 -0500
@@ -880,9 +880,9 @@
                 if parent_base.0 == p1.0 {
                     break;
                 }
-                p1 = self.check_revision(parent_base).ok_or(
-                    RevlogError::InvalidRevision(parent_base.to_string()),
-                )?;
+                p1 = self.check_revision(parent_base).ok_or_else(|| {
+                    RevlogError::InvalidRevision(parent_base.to_string())
+                })?;
             }
             while let Some(p2_entry) = self.get_entry(p2) {
                 if p2_entry.compressed_len() != 0 || p2.0 == 0 {
@@ -893,16 +893,16 @@
                 if parent_base.0 == p2.0 {
                     break;
                 }
-                p2 = self.check_revision(parent_base).ok_or(
-                    RevlogError::InvalidRevision(parent_base.to_string()),
-                )?;
+                p2 = self.check_revision(parent_base).ok_or_else(|| {
+                    RevlogError::InvalidRevision(parent_base.to_string())
+                })?;
             }
             if base == p1.0 || base == p2.0 {
                 return Ok(false);
             }
-            rev = self
-                .check_revision(base.into())
-                .ok_or(RevlogError::InvalidRevision(base.to_string()))?;
+            rev = self.check_revision(base.into()).ok_or_else(|| {
+                RevlogError::InvalidRevision(base.to_string())
+            })?;
         }
         Ok(rev == NULL_REVISION)
     }