compiler: clippy::complexity fixes

3 files changed, 4 insertions, 5 deletions

diff --git a/compiler/rustc_borrowck/src/diagnostics/conflict_errors.rs b/compiler/rustc_borrowck/src/diagnostics/conflict_errors.rs
index e1509da913a..3c6bd1d36fd 100644
--- a/compiler/rustc_borrowck/src/diagnostics/conflict_errors.rs
+++ b/compiler/rustc_borrowck/src/diagnostics/conflict_errors.rs
@@ -1559,7 +1559,7 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> {
                     // A bare path doesn't need a `let` assignment, it's already a simple
                     // binding access.
                     // As a new binding wasn't added, we don't need to modify the advancing call.
-                    sugg.push((loop_span.with_hi(pat_span.lo()), format!("while let Some(")));
+                    sugg.push((loop_span.with_hi(pat_span.lo()), "while let Some(".to_string()));
                     sugg.push((
                         pat_span.shrink_to_hi().with_hi(head.span.lo()),
                         ") = ".to_string(),
diff --git a/compiler/rustc_borrowck/src/diagnostics/outlives_suggestion.rs b/compiler/rustc_borrowck/src/diagnostics/outlives_suggestion.rs
index b2c7a98142e..6beae61ca7f 100644
--- a/compiler/rustc_borrowck/src/diagnostics/outlives_suggestion.rs
+++ b/compiler/rustc_borrowck/src/diagnostics/outlives_suggestion.rs
@@ -134,14 +134,13 @@ impl OutlivesSuggestionBuilder {
 
                 for (r, bound) in unified.into_iter() {
                     if !unified_already.contains(fr) {
-                        suggested.push(SuggestedConstraint::Equal(fr_name.clone(), bound));
+                        suggested.push(SuggestedConstraint::Equal(fr_name, bound));
                         unified_already.insert(r);
                     }
                 }
 
                 if !other.is_empty() {
-                    let other =
-                        other.iter().map(|(_, rname)| rname.clone()).collect::<SmallVec<_>>();
+                    let other = other.iter().map(|(_, rname)| *rname).collect::<SmallVec<_>>();
                     suggested.push(SuggestedConstraint::Outlives(fr_name, other))
                 }
             }
diff --git a/compiler/rustc_borrowck/src/diagnostics/region_errors.rs b/compiler/rustc_borrowck/src/diagnostics/region_errors.rs
index 50d22881c3e..e586c58781c 100644
--- a/compiler/rustc_borrowck/src/diagnostics/region_errors.rs
+++ b/compiler/rustc_borrowck/src/diagnostics/region_errors.rs
@@ -280,7 +280,7 @@ impl<'a, 'tcx> MirBorrowckCtxt<'a, 'tcx> {
                             .iter()
                             .rfind(|param| param.def_id.to_def_id() == defid)
                             .is_some() {
-                            suggestions.push((bounded_span.shrink_to_hi(), format!(" + 'static")));
+                            suggestions.push((bounded_span.shrink_to_hi(), " + 'static".to_string()));
                         }
                 });
             });