diff --git a/src/librustc/hir/map/collector.rs b/src/librustc/hir/map/collector.rs
index 532e61721ca45..8a59f6b69bcd6 100644
--- a/src/librustc/hir/map/collector.rs
+++ b/src/librustc/hir/map/collector.rs
@@ -590,7 +590,8 @@ struct HirItemLike<T> {
 }
 
 impl<'hir, T> HashStable<StableHashingContext<'hir>> for HirItemLike<T>
-    where T: HashStable<StableHashingContext<'hir>>
+where
+    T: HashStable<StableHashingContext<'hir>>,
 {
     fn hash_stable<W: StableHasherResult>(&self,
                                           hcx: &mut StableHashingContext<'hir>,
diff --git a/src/librustc/ich/hcx.rs b/src/librustc/ich/hcx.rs
index 8454eb75b55c7..eff42efa67b92 100644
--- a/src/librustc/ich/hcx.rs
+++ b/src/librustc/ich/hcx.rs
@@ -397,8 +397,9 @@ pub fn hash_stable_trait_impls<'a, W>(
     hcx: &mut StableHashingContext<'a>,
     hasher: &mut StableHasher<W>,
     blanket_impls: &[DefId],
-    non_blanket_impls: &FxHashMap<fast_reject::SimplifiedType, Vec<DefId>>)
-    where W: StableHasherResult
+    non_blanket_impls: &FxHashMap<fast_reject::SimplifiedType, Vec<DefId>>,
+) where
+    W: StableHasherResult,
 {
     {
         let mut blanket_impls: SmallVec<[_; 8]> = blanket_impls
diff --git a/src/librustc/ich/impls_ty.rs b/src/librustc/ich/impls_ty.rs
index c2c0ced07e695..89e79c56ca39d 100644
--- a/src/librustc/ich/impls_ty.rs
+++ b/src/librustc/ich/impls_ty.rs
@@ -136,7 +136,8 @@ impl<'gcx> HashStable<StableHashingContext<'gcx>> for ty::BoundVar {
 }
 
 impl<'a, T> HashStable<StableHashingContext<'a>> for ty::Binder<T>
-    where T: HashStable<StableHashingContext<'a>>
+where
+    T: HashStable<StableHashingContext<'a>>,
 {
     fn hash_stable<W: StableHasherResult>(&self,
                                           hcx: &mut StableHashingContext<'a>,
@@ -192,9 +193,7 @@ impl<'a> ToStableHashKey<StableHashingContext<'a>> for region::Scope {
     }
 }
 
-impl<'a> HashStable<StableHashingContext<'a>>
-for ty::TyVid
-{
+impl<'a> HashStable<StableHashingContext<'a>> for ty::TyVid {
     fn hash_stable<W: StableHasherResult>(&self,
                                           _hcx: &mut StableHashingContext<'a>,
                                           _hasher: &mut StableHasher<W>) {
@@ -204,9 +203,7 @@ for ty::TyVid
     }
 }
 
-impl<'a> HashStable<StableHashingContext<'a>>
-for ty::IntVid
-{
+impl<'a> HashStable<StableHashingContext<'a>> for ty::IntVid {
     fn hash_stable<W: StableHasherResult>(&self,
                                           _hcx: &mut StableHashingContext<'a>,
                                           _hasher: &mut StableHasher<W>) {
@@ -216,9 +213,7 @@ for ty::IntVid
     }
 }
 
-impl<'a> HashStable<StableHashingContext<'a>>
-for ty::FloatVid
-{
+impl<'a> HashStable<StableHashingContext<'a>> for ty::FloatVid {
     fn hash_stable<W: StableHasherResult>(&self,
                                           _hcx: &mut StableHashingContext<'a>,
                                           _hasher: &mut StableHasher<W>) {
@@ -228,9 +223,9 @@ for ty::FloatVid
     }
 }
 
-impl<'a, T> HashStable<StableHashingContext<'a>>
-for ty::steal::Steal<T>
-    where T: HashStable<StableHashingContext<'a>>
+impl<'a, T> HashStable<StableHashingContext<'a>> for ty::steal::Steal<T>
+where
+    T: HashStable<StableHashingContext<'a>>,
 {
     fn hash_stable<W: StableHasherResult>(&self,
                                           hcx: &mut StableHashingContext<'a>,
diff --git a/src/librustc/traits/select.rs b/src/librustc/traits/select.rs
index c637fc27cc0ca..af0b51e637a36 100644
--- a/src/librustc/traits/select.rs
+++ b/src/librustc/traits/select.rs
@@ -104,10 +104,7 @@ pub enum IntercrateAmbiguityCause {
 impl IntercrateAmbiguityCause {
     /// Emits notes when the overlap is caused by complex intercrate ambiguities.
     /// See #23980 for details.
-    pub fn add_intercrate_ambiguity_hint(
-        &self,
-        err: &mut errors::DiagnosticBuilder<'_>,
-    ) {
+    pub fn add_intercrate_ambiguity_hint(&self, err: &mut errors::DiagnosticBuilder<'_>) {
         err.note(&self.intercrate_ambiguity_hint());
     }
 
diff --git a/src/librustc/ty/fast_reject.rs b/src/librustc/ty/fast_reject.rs
index 3ac76c384e605..908bbbcd1d77d 100644
--- a/src/librustc/ty/fast_reject.rs
+++ b/src/librustc/ty/fast_reject.rs
@@ -155,8 +155,8 @@ impl<D: Copy + Debug + Ord + Eq + Hash> SimplifiedTypeGen<D> {
 }
 
 impl<'a, D> HashStable<StableHashingContext<'a>> for SimplifiedTypeGen<D>
-    where D: Copy + Debug + Ord + Eq + Hash +
-             HashStable<StableHashingContext<'a>>,
+where
+    D: Copy + Debug + Ord + Eq + Hash + HashStable<StableHashingContext<'a>>,
 {
     fn hash_stable<W: StableHasherResult>(&self,
                                           hcx: &mut StableHashingContext<'a>,
diff --git a/src/librustc/ty/instance.rs b/src/librustc/ty/instance.rs
index cee1359eb366b..ba42cecbe5b83 100644
--- a/src/librustc/ty/instance.rs
+++ b/src/librustc/ty/instance.rs
@@ -442,10 +442,10 @@ fn resolve_associated_item<'a, 'tcx>(
     }
 }
 
-fn needs_fn_once_adapter_shim(actual_closure_kind: ty::ClosureKind,
-                                        trait_closure_kind: ty::ClosureKind)
-    -> Result<bool, ()>
-{
+fn needs_fn_once_adapter_shim(
+    actual_closure_kind: ty::ClosureKind,
+    trait_closure_kind: ty::ClosureKind,
+) -> Result<bool, ()> {
     match (actual_closure_kind, trait_closure_kind) {
         (ty::ClosureKind::Fn, ty::ClosureKind::Fn) |
             (ty::ClosureKind::FnMut, ty::ClosureKind::FnMut) |
diff --git a/src/librustc/ty/layout.rs b/src/librustc/ty/layout.rs
index 879d03352e654..4696325275292 100644
--- a/src/librustc/ty/layout.rs
+++ b/src/librustc/ty/layout.rs
@@ -1679,9 +1679,10 @@ impl ty::query::TyCtxtAt<'a, 'tcx, '_> {
 }
 
 impl<'tcx, C> TyLayoutMethods<'tcx, C> for Ty<'tcx>
-    where C: LayoutOf<Ty = Ty<'tcx>> + HasTyCtxt<'tcx>,
-          C::TyLayout: MaybeResult<TyLayout<'tcx>>,
-          C: HasParamEnv<'tcx>
+where
+    C: LayoutOf<Ty = Ty<'tcx>> + HasTyCtxt<'tcx>,
+    C::TyLayout: MaybeResult<TyLayout<'tcx>>,
+    C: HasParamEnv<'tcx>,
 {
     fn for_variant(this: TyLayout<'tcx>, cx: &C, variant_index: VariantIdx) -> TyLayout<'tcx> {
         let details = match this.variants {
diff --git a/src/librustc/ty/mod.rs b/src/librustc/ty/mod.rs
index aafc510f5b6ed..c46e9c4be366c 100644
--- a/src/librustc/ty/mod.rs
+++ b/src/librustc/ty/mod.rs
@@ -1615,7 +1615,8 @@ pub struct Placeholder<T> {
 }
 
 impl<'a, T> HashStable<StableHashingContext<'a>> for Placeholder<T>
-    where T: HashStable<StableHashingContext<'a>>
+where
+    T: HashStable<StableHashingContext<'a>>,
 {
     fn hash_stable<W: StableHasherResult>(
         &self,
diff --git a/src/librustc_codegen_ssa/mir/block.rs b/src/librustc_codegen_ssa/mir/block.rs
index 07bfd5653ce15..e4b82d8496669 100644
--- a/src/librustc_codegen_ssa/mir/block.rs
+++ b/src/librustc_codegen_ssa/mir/block.rs
@@ -223,10 +223,7 @@ impl<'a, 'tcx: 'a, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> {
         }
     }
 
-    fn codegen_return_terminator(
-        &mut self,
-        mut bx: Bx,
-    ) {
+    fn codegen_return_terminator(&mut self, mut bx: Bx) {
         if self.fn_ty.c_variadic {
             match self.va_list_ref {
                 Some(va_list) => {
diff --git a/src/librustc_lint/types.rs b/src/librustc_lint/types.rs
index 7c185ba7423ad..809586e246a35 100644
--- a/src/librustc_lint/types.rs
+++ b/src/librustc_lint/types.rs
@@ -202,11 +202,7 @@ fn report_bin_hex_error(
 //  - `uX` => `uY`
 //
 // No suggestion for: `isize`, `usize`.
-fn get_type_suggestion(
-    t: Ty<'_>,
-    val: u128,
-    negative: bool,
-) -> Option<String> {
+fn get_type_suggestion(t: Ty<'_>, val: u128, negative: bool) -> Option<String> {
     use syntax::ast::IntTy::*;
     use syntax::ast::UintTy::*;
     macro_rules! find_fit {
diff --git a/src/librustc_mir/build/matches/mod.rs b/src/librustc_mir/build/matches/mod.rs
index fbb6161e8fe5b..0aabebcf9dc2c 100644
--- a/src/librustc_mir/build/matches/mod.rs
+++ b/src/librustc_mir/build/matches/mod.rs
@@ -1575,11 +1575,7 @@ impl<'a, 'gcx, 'tcx> Builder<'a, 'gcx, 'tcx> {
 
     /// Append `AscribeUserType` statements onto the end of `block`
     /// for each ascription
-    fn ascribe_types(
-        &mut self,
-        block: BasicBlock,
-        ascriptions: &[Ascription<'tcx>],
-    ) {
+    fn ascribe_types(&mut self, block: BasicBlock, ascriptions: &[Ascription<'tcx>]) {
         for ascription in ascriptions {
             let source_info = self.source_info(ascription.span);
 
diff --git a/src/librustc_mir/util/elaborate_drops.rs b/src/librustc_mir/util/elaborate_drops.rs
index 0fbf8bb3e273a..b8ce31d0adfdc 100644
--- a/src/librustc_mir/util/elaborate_drops.rs
+++ b/src/librustc_mir/util/elaborate_drops.rs
@@ -119,7 +119,8 @@ pub fn elaborate_drop<'b, 'tcx, D>(
 }
 
 impl<'l, 'b, 'tcx, D> DropCtxt<'l, 'b, 'tcx, D>
-    where D: DropElaborator<'b, 'tcx>
+where
+    D: DropElaborator<'b, 'tcx>,
 {
     fn place_ty(&self, place: &Place<'tcx>) -> Ty<'tcx> {
         place.ty(self.elaborator.body(), self.tcx()).ty
@@ -285,12 +286,12 @@ impl<'l, 'b, 'tcx, D> DropCtxt<'l, 'b, 'tcx, D>
     ///
     /// NOTE: this does not clear the master drop flag, so you need
     /// to point succ/unwind on a `drop_ladder_bottom`.
-    fn drop_ladder(&mut self,
-                       fields: Vec<(Place<'tcx>, Option<D::Path>)>,
-                       succ: BasicBlock,
-                       unwind: Unwind)
-                       -> (BasicBlock, Unwind)
-    {
+    fn drop_ladder(
+        &mut self,
+        fields: Vec<(Place<'tcx>, Option<D::Path>)>,
+        succ: BasicBlock,
+        unwind: Unwind,
+    ) -> (BasicBlock, Unwind) {
         debug!("drop_ladder({:?}, {:?})", self, fields);
 
         let mut fields = fields;
@@ -314,9 +315,7 @@ impl<'l, 'b, 'tcx, D> DropCtxt<'l, 'b, 'tcx, D>
         (*normal_ladder.last().unwrap(), *unwind_ladder.last().unwrap())
     }
 
-    fn open_drop_for_tuple(&mut self, tys: &[Ty<'tcx>])
-                               -> BasicBlock
-    {
+    fn open_drop_for_tuple(&mut self, tys: &[Ty<'tcx>]) -> BasicBlock {
         debug!("open_drop_for_tuple({:?}, {:?})", self, tys);
 
         let fields = tys.iter().enumerate().map(|(i, &ty)| {
@@ -328,9 +327,7 @@ impl<'l, 'b, 'tcx, D> DropCtxt<'l, 'b, 'tcx, D>
         self.drop_ladder(fields, succ, unwind).0
     }
 
-    fn open_drop_for_box(&mut self, adt: &'tcx ty::AdtDef, substs: SubstsRef<'tcx>)
-                             -> BasicBlock
-    {
+    fn open_drop_for_box(&mut self, adt: &'tcx ty::AdtDef, substs: SubstsRef<'tcx>) -> BasicBlock {
         debug!("open_drop_for_box({:?}, {:?}, {:?})", self, adt, substs);
 
         let interior = self.place.clone().deref();
@@ -346,8 +343,7 @@ impl<'l, 'b, 'tcx, D> DropCtxt<'l, 'b, 'tcx, D>
         self.drop_subpath(&interior, interior_path, succ, unwind_succ)
     }
 
-    fn open_drop_for_adt(&mut self, adt: &'tcx ty::AdtDef, substs: SubstsRef<'tcx>)
-                             -> BasicBlock {
+    fn open_drop_for_adt(&mut self, adt: &'tcx ty::AdtDef, substs: SubstsRef<'tcx>) -> BasicBlock {
         debug!("open_drop_for_adt({:?}, {:?}, {:?})", self, adt, substs);
         if adt.variants.len() == 0 {
             return self.elaborator.patch().new_block(BasicBlockData {
@@ -505,9 +501,7 @@ impl<'l, 'b, 'tcx, D> DropCtxt<'l, 'b, 'tcx, D>
         self.drop_flag_test_block(switch_block, succ, unwind)
     }
 
-    fn destructor_call_block(&mut self, (succ, unwind): (BasicBlock, Unwind))
-                                 -> BasicBlock
-    {
+    fn destructor_call_block(&mut self, (succ, unwind): (BasicBlock, Unwind)) -> BasicBlock {
         debug!("destructor_call_block({:?}, {:?})", self, succ);
         let tcx = self.tcx();
         let drop_trait = tcx.lang_items().drop_trait().unwrap();
@@ -837,11 +831,12 @@ impl<'l, 'b, 'tcx, D> DropCtxt<'l, 'b, 'tcx, D>
     /// if FLAG(self.path)
     ///     if let Some(mode) = mode: FLAG(self.path)[mode] = false
     ///     drop(self.place)
-    fn complete_drop(&mut self,
-                         drop_mode: Option<DropFlagMode>,
-                         succ: BasicBlock,
-                         unwind: Unwind) -> BasicBlock
-    {
+    fn complete_drop(
+        &mut self,
+        drop_mode: Option<DropFlagMode>,
+        succ: BasicBlock,
+        unwind: Unwind,
+    ) -> BasicBlock {
         debug!("complete_drop({:?},{:?})", self, drop_mode);
 
         let drop_block = self.drop_block(succ, unwind);
@@ -892,7 +887,7 @@ impl<'l, 'b, 'tcx, D> DropCtxt<'l, 'b, 'tcx, D>
         adt: &'tcx ty::AdtDef,
         substs: SubstsRef<'tcx>,
         target: BasicBlock,
-        unwind: Unwind
+        unwind: Unwind,
     ) -> BasicBlock {
         let tcx = self.tcx();
         let unit_temp = Place::Base(PlaceBase::Local(self.new_temp(tcx.mk_unit())));
@@ -947,11 +942,7 @@ impl<'l, 'b, 'tcx, D> DropCtxt<'l, 'b, 'tcx, D>
         }
     }
 
-    fn new_block(&mut self,
-                     unwind: Unwind,
-                     k: TerminatorKind<'tcx>)
-                     -> BasicBlock
-    {
+    fn new_block(&mut self, unwind: Unwind, k: TerminatorKind<'tcx>) -> BasicBlock {
         self.elaborator.patch().new_block(BasicBlockData {
             statements: vec![],
             terminator: Some(Terminator {
diff --git a/src/libsyntax_ext/cfg.rs b/src/libsyntax_ext/cfg.rs
index 3b49f218811ad..e952515bfe0eb 100644
--- a/src/libsyntax_ext/cfg.rs
+++ b/src/libsyntax_ext/cfg.rs
@@ -12,10 +12,11 @@ use syntax::tokenstream;
 use syntax::parse::token;
 use syntax_pos::Span;
 
-pub fn expand_cfg(cx: &mut ExtCtxt<'_>,
-                       sp: Span,
-                       tts: &[tokenstream::TokenTree])
-                       -> Box<dyn base::MacResult + 'static> {
+pub fn expand_cfg(
+    cx: &mut ExtCtxt<'_>,
+    sp: Span,
+    tts: &[tokenstream::TokenTree],
+) -> Box<dyn base::MacResult + 'static> {
     let sp = sp.apply_mark(cx.current_expansion.mark);
 
     match parse_cfg(cx, sp, tts) {