Auto merge of rust-lang#94385 - matthiaskrgr:rollup-4pwegqk, r=matthiaskrgr

Rollup of 5 pull requests

Successful merges:

 - rust-lang#93603 (Populate liveness facts when calling `get_body_with_borrowck_facts` without `-Z polonius`)
 - rust-lang#93870 (Fix switch on discriminant detection in a presence of coverage counters)
 - rust-lang#94355 (Add one more case to avoid ICE)
 - rust-lang#94363 (Remove needless borrows from core::fmt)
 - rust-lang#94377 (`check_used` should only look at actual `used` attributes)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup

Author: bors

core/src/fmt/builders.rs

@@ -138,7 +138,7 @@ impl<'a, 'b: 'a> DebugStruct<'a, 'b> {
                 }
                 let mut slot = None;
                 let mut state = Default::default();
-                let mut writer = PadAdapter::wrap(&mut self.fmt, &mut slot, &mut state);
+                let mut writer = PadAdapter::wrap(self.fmt, &mut slot, &mut state);
                 writer.write_str(name)?;
                 writer.write_str(": ")?;
                 value.fmt(&mut writer)?;
@@ -189,7 +189,7 @@ impl<'a, 'b: 'a> DebugStruct<'a, 'b> {
                 if self.is_pretty() {
                     let mut slot = None;
                     let mut state = Default::default();
-                    let mut writer = PadAdapter::wrap(&mut self.fmt, &mut slot, &mut state);
+                    let mut writer = PadAdapter::wrap(self.fmt, &mut slot, &mut state);
                     writer.write_str("..\n")?;
                     self.fmt.write_str("}")
                 } else {
@@ -323,7 +323,7 @@ impl<'a, 'b: 'a> DebugTuple<'a, 'b> {
                 }
                 let mut slot = None;
                 let mut state = Default::default();
-                let mut writer = PadAdapter::wrap(&mut self.fmt, &mut slot, &mut state);
+                let mut writer = PadAdapter::wrap(self.fmt, &mut slot, &mut state);
                 value.fmt(&mut writer)?;
                 writer.write_str(",\n")
             } else {
@@ -394,7 +394,7 @@ impl<'a, 'b: 'a> DebugInner<'a, 'b> {
                 }
                 let mut slot = None;
                 let mut state = Default::default();
-                let mut writer = PadAdapter::wrap(&mut self.fmt, &mut slot, &mut state);
+                let mut writer = PadAdapter::wrap(self.fmt, &mut slot, &mut state);
                 entry.fmt(&mut writer)?;
                 writer.write_str(",\n")
             } else {
@@ -789,7 +789,7 @@ impl<'a, 'b: 'a> DebugMap<'a, 'b> {
                 }
                 let mut slot = None;
                 self.state = Default::default();
-                let mut writer = PadAdapter::wrap(&mut self.fmt, &mut slot, &mut self.state);
+                let mut writer = PadAdapter::wrap(self.fmt, &mut slot, &mut self.state);
                 key.fmt(&mut writer)?;
                 writer.write_str(": ")?;
             } else {
@@ -845,7 +845,7 @@ impl<'a, 'b: 'a> DebugMap<'a, 'b> {
 
             if self.is_pretty() {
                 let mut slot = None;
-                let mut writer = PadAdapter::wrap(&mut self.fmt, &mut slot, &mut self.state);
+                let mut writer = PadAdapter::wrap(self.fmt, &mut slot, &mut self.state);
                 value.fmt(&mut writer)?;
                 writer.write_str(",\n")?;
             } else {