correct style failures

src/debray_allocator.rs

@@ -166,12 +166,12 @@ impl DebrayAllocator {
         for var_num in subsumed_hits {
             match &mut self.var_data.records[var_num].allocation {
                 VarAlloc::Perm(_, ref mut allocation) => {
-                    match allocation {
+		    if let PermVarAllocation::Done {
-                        PermVarAllocation::Done {
                         shallow_safety,
                         deep_safety,
                         ..
-                        } => {
+                    } = allocation
+		    {
                         if !self
                             .branch_stack
                             .safety_unneeded_in_branch(shallow_safety, &branch_designator)
@@ -188,9 +188,6 @@ impl DebrayAllocator {
                             branch_occurrences.deep_safety.insert(var_num);
                         }
                     }
-                        _ => {
-                        }
-                    }
 		    
                     *allocation = PermVarAllocation::Pending;
                 }

src/forms.rs

@@ -876,7 +876,7 @@ impl ClauseIndexInfo {
     }
 }
 
-#[derive(Clone, Copy, Debug)]
+#[derive(Clone, Copy, Debug, Default)]
 pub(crate) struct PredicateInfo {
     pub(crate) is_extensible: bool,
     pub(crate) is_discontiguous: bool,
@@ -885,18 +885,7 @@ pub(crate) struct PredicateInfo {
     pub(crate) has_clauses: bool,
 }
 
-impl Default for PredicateInfo {
+
-    #[inline]
-    fn default() -> Self {
-        PredicateInfo {
-            is_extensible: false,
-            is_discontiguous: false,
-            is_dynamic: false,
-            is_multifile: false,
-            has_clauses: false,
-        }
-    }
-}
 
 impl PredicateInfo {
     #[inline]

src/machine/loader.rs

@@ -148,9 +148,10 @@ impl<'a, LS: LoadState<'a>> Drop for Loader<'a, LS> {
     }
 }
 
-#[derive(Debug, Clone, Copy, Hash, PartialEq, Eq)]
+#[derive(Debug, Clone, Copy, Hash, PartialEq, Eq, Default)]
 pub enum CompilationTarget {
     Module(Atom),
+    #[default]
     User,
 }
 
@@ -163,13 +164,6 @@ impl fmt::Display for CompilationTarget {
     }
 }
 
-impl Default for CompilationTarget {
-    #[inline]
-    fn default() -> Self {
-        CompilationTarget::User
-    }
-}
-
 impl CompilationTarget {
     #[inline]
     pub(crate) fn module_name(&self) -> Atom {

src/parser/ast.rs

@@ -327,8 +327,9 @@ impl DoubleQuotes {
     }
 }
 
-#[derive(Debug, Clone, Copy)]
+#[derive(Debug, Clone, Copy, Default)]
 pub enum Unknown {
+    #[default]
     Error,
     Fail,
     Warn,
@@ -348,13 +349,6 @@ impl Unknown {
     }
 }
 
-impl Default for Unknown {
-    #[inline]
-    fn default() -> Self {
-        Unknown::Error
-    }
-}
-
 pub fn default_op_dir() -> OpDir {
     let mut op_dir = OpDir::with_hasher(FxBuildHasher::default());