37     entries: Vec<Entry>,
43 enum Entry {  enum
48 impl Entry {  impl
123             Entry::Free { .. } => true,  in is_empty()
124             Entry::Occupied { entry } => entry.entry.downcast_ref::<Tombstone>().is_some(),  in is_empty()
168                 Entry::Free { next } => self.free_head = *next,  in pop_free_list()
169                 Entry::Occupied { .. } => unreachable!(),  in pop_free_list()
185                 Entry::Occupied {  in free_entry()
193                 Entry::Occupied { entry } => entry,  in free_entry()
194                 Entry::Free { .. } => unreachable!(),  in free_entry()
199                 Entry::Free {  in free_entry()
203                 Entry::Occupied { entry } => entry,  in free_entry()
204                 Entry::Free { .. } => unreachable!(),  in free_entry()
217             self.entries[free] = Entry::Occupied { entry: e };  in push_()
228             self.entries.push(Entry::Occupied { entry: e });  in push_()
236             .and_then(Entry::occupied)  in occupied()
243             .and_then(Entry::occupied_mut)  in occupied_mut()
411             Entry::Occupied { entry } => Some(&mut *entry.entry),  in iter_mut()
412             Entry::Free { .. } => None,  in iter_mut()
428             if let Entry::Occupied { entry } = entry {  in fmt()