- // MIR for `call` before Inline
+ // MIR for `call` after Inline
  
  fn call(_1: Box<dyn FnMut<I, Output = ()>>, _2: I) -> () {
      debug mock => _1;
      debug input => _2;
      let mut _0: ();
      let mut _3: &mut std::boxed::Box<dyn std::ops::FnMut<I, Output = ()>>;
      let mut _4: I;
+     scope 1 (inlined <Box<dyn FnMut<I, Output = ()>> as FnMut<I>>::call_mut) {
+         let mut _5: &mut dyn std::ops::FnMut<I, Output = ()>;
+         let mut _6: std::boxed::Box<dyn std::ops::FnMut<I, Output = ()>>;
+         let mut _7: *const dyn std::ops::FnMut<I, Output = ()>;
+     }
  
      bb0: {
          StorageLive(_3);
          _3 = &mut _1;
          StorageLive(_4);
          _4 = move _2;
-         _0 = <Box<dyn FnMut<I, Output = ()>> as FnMut<I>>::call_mut(move _3, move _4) -> [return: bb1, unwind: bb3];
+         StorageLive(_6);
+         StorageLive(_7);
+         StorageLive(_5);
+         _6 = copy (*_3);
+         _7 = copy ((_6.0: std::ptr::Unique<dyn std::ops::FnMut<I, Output = ()>>).0: std::ptr::NonNull<dyn std::ops::FnMut<I, Output = ()>>) as *const dyn std::ops::FnMut<I, Output = ()> (Transmute);
+         _5 = &mut (*_7);
+         _0 = <dyn FnMut<I, Output = ()> as FnMut<I>>::call_mut(move _5, move _4) -> [return: bb4, unwind: bb2];
      }
  
      bb1: {
-         StorageDead(_4);
-         StorageDead(_3);
-         drop(_1) -> [return: bb2, unwind: bb4];
+         return;
      }
  
-     bb2: {
-         return;
+     bb2 (cleanup): {
+         drop(_1) -> [return: bb3, unwind terminate(cleanup)];
      }
  
      bb3 (cleanup): {
-         drop(_1) -> [return: bb4, unwind terminate(cleanup)];
+         resume;
      }
  
-     bb4 (cleanup): {
-         resume;
+     bb4: {
+         StorageDead(_5);
+         StorageDead(_7);
+         StorageDead(_6);
+         StorageDead(_4);
+         StorageDead(_3);
+         drop(_1) -> [return: bb1, unwind: bb3];
      }
  }