diff --git a/cranelift/src/clif-util.rs b/cranelift/src/clif-util.rs
index f608e78e1e..d1ad95ed3d 100755
--- a/cranelift/src/clif-util.rs
+++ b/cranelift/src/clif-util.rs
@@ -1,10 +1,19 @@
 #![deny(trivial_numeric_casts)]
-#![warn(unused_import_braces, unstable_features, unused_extern_crates)]
+#![warn(
+    unused_import_braces,
+    unstable_features,
+    unused_extern_crates
+)]
 #![cfg_attr(
     feature = "cargo-clippy",
     warn(
-        float_arithmetic, mut_mut, nonminimal_bool, option_map_unwrap_or, option_map_unwrap_or_else,
-        unicode_not_nfc, use_self
+        float_arithmetic,
+        mut_mut,
+        nonminimal_bool,
+        option_map_unwrap_or,
+        option_map_unwrap_or_else,
+        unicode_not_nfc,
+        use_self
     )
 )]
 
@@ -153,31 +162,26 @@ fn main() {
                 .arg(add_time_flag())
                 .arg(add_input_file_arg())
                 .arg(add_debug_flag()),
-        )
-        .subcommand(
+        ).subcommand(
             SubCommand::with_name("cat")
                 .about("Outputs .clif file")
                 .arg(add_input_file_arg())
                 .arg(add_debug_flag()),
-        )
-        .subcommand(
+        ).subcommand(
             SubCommand::with_name("print-cfg")
                 .about("Prints out cfg in dot format")
                 .arg(add_input_file_arg())
                 .arg(add_debug_flag()),
-        )
-        .subcommand(
+        ).subcommand(
             add_wasm_or_compile("compile")
                 .arg(
                     Arg::with_name("just-decode")
                         .short("t")
                         .help("Just decode WebAssembly to Cranelift IR"),
-                )
-                .arg(Arg::with_name("check-translation").short("c").help(
+                ).arg(Arg::with_name("check-translation").short("c").help(
                     "Just checks the correctness of Cranelift IR translated from WebAssembly",
                 )),
-        )
-        .subcommand(add_wasm_or_compile("wasm"))
+        ).subcommand(add_wasm_or_compile("wasm"))
         .subcommand(
             SubCommand::with_name("pass")
                 .about("Run specified pass(s) on an input file.")
diff --git a/lib/bforest/src/lib.rs b/lib/bforest/src/lib.rs
index 2a1c5f8436..7971d481d8 100644
--- a/lib/bforest/src/lib.rs
+++ b/lib/bforest/src/lib.rs
@@ -16,13 +16,25 @@
 #![deny(missing_docs, trivial_numeric_casts, unused_extern_crates)]
 #![warn(unused_import_braces)]
 #![cfg_attr(feature = "std", warn(unstable_features))]
-#![cfg_attr(feature = "clippy", plugin(clippy(conf_file = "../../clippy.toml")))]
-#![cfg_attr(feature = "cargo-clippy", allow(new_without_default, new_without_default_derive))]
+#![cfg_attr(
+    feature = "clippy",
+    plugin(clippy(conf_file = "../../clippy.toml"))
+)]
+#![cfg_attr(
+    feature = "cargo-clippy",
+    allow(new_without_default, new_without_default_derive)
+)]
 #![cfg_attr(
     feature = "cargo-clippy",
     warn(
-        float_arithmetic, mut_mut, nonminimal_bool, option_map_unwrap_or, option_map_unwrap_or_else,
-        print_stdout, unicode_not_nfc, use_self
+        float_arithmetic,
+        mut_mut,
+        nonminimal_bool,
+        option_map_unwrap_or,
+        option_map_unwrap_or_else,
+        print_stdout,
+        unicode_not_nfc,
+        use_self
     )
 )]
 // Turns on no_std and alloc features if std is not available.
diff --git a/lib/codegen/src/isa/x86/abi.rs b/lib/codegen/src/isa/x86/abi.rs
index 6028fa507d..af7dda69d1 100644
--- a/lib/codegen/src/isa/x86/abi.rs
+++ b/lib/codegen/src/isa/x86/abi.rs
@@ -99,8 +99,7 @@ impl ArgAssigner for Args {
                         RU::r14
                     } else {
                         RU::rsi
-                    } as RegUnit)
-                        .into()
+                    } as RegUnit).into()
                 }
                 // This is SpiderMonkey's `WasmTableCallSigReg`.
                 ArgumentPurpose::SignatureId => return ArgumentLoc::Reg(RU::r10 as RegUnit).into(),
diff --git a/lib/codegen/src/legalizer/boundary.rs b/lib/codegen/src/legalizer/boundary.rs
index e052e63be6..b8bdc83ca8 100644
--- a/lib/codegen/src/legalizer/boundary.rs
+++ b/lib/codegen/src/legalizer/boundary.rs
@@ -569,8 +569,7 @@ pub fn handle_return_abi(inst: Inst, func: &mut Function, cfg: &ControlFlowGraph
             rt.purpose == ArgumentPurpose::Link
                 || rt.purpose == ArgumentPurpose::StructReturn
                 || rt.purpose == ArgumentPurpose::VMContext
-        })
-        .count();
+        }).count();
     let abi_args = func.signature.returns.len() - special_args;
 
     let pos = &mut FuncCursor::new(func).at_inst(inst);
@@ -689,8 +688,7 @@ fn spill_call_arguments(pos: &mut FuncCursor) -> bool {
                     }
                     _ => None,
                 }
-            })
-            .collect::<Vec<_>>()
+            }).collect::<Vec<_>>()
     };
 
     if arglist.is_empty() {
diff --git a/lib/codegen/src/lib.rs b/lib/codegen/src/lib.rs
index 10e8a7a461..ec924dc6bf 100644
--- a/lib/codegen/src/lib.rs
+++ b/lib/codegen/src/lib.rs
@@ -3,7 +3,10 @@
 #![deny(missing_docs, trivial_numeric_casts, unused_extern_crates)]
 #![warn(unused_import_braces)]
 #![cfg_attr(feature = "std", deny(unstable_features))]
-#![cfg_attr(feature = "clippy", plugin(clippy(conf_file = "../../clippy.toml")))]
+#![cfg_attr(
+    feature = "clippy",
+    plugin(clippy(conf_file = "../../clippy.toml"))
+)]
 #![cfg_attr(feature="cargo-clippy", allow(
 // This requires Rust 1.27 or later.
                 duration_subsec,
@@ -32,8 +35,14 @@
 #![cfg_attr(
     feature = "cargo-clippy",
     warn(
-        float_arithmetic, mut_mut, nonminimal_bool, option_map_unwrap_or, option_map_unwrap_or_else,
-        print_stdout, unicode_not_nfc, use_self
+        float_arithmetic,
+        mut_mut,
+        nonminimal_bool,
+        option_map_unwrap_or,
+        option_map_unwrap_or_else,
+        print_stdout,
+        unicode_not_nfc,
+        use_self
     )
 )]
 // Turns on no_std and alloc features if std is not available.
diff --git a/lib/codegen/src/regalloc/coloring.rs b/lib/codegen/src/regalloc/coloring.rs
index 56691eecf3..d9df465f5c 100644
--- a/lib/codegen/src/regalloc/coloring.rs
+++ b/lib/codegen/src/regalloc/coloring.rs
@@ -902,10 +902,9 @@ impl<'a> Context<'a> {
             }
             Table(jt) => {
                 let lr = &self.liveness[value];
-                !lr.is_local()
-                    && self.cur.func.jump_tables[jt]
-                        .entries()
-                        .any(|(_, ebb)| lr.is_livein(ebb, ctx))
+                !lr.is_local() && self.cur.func.jump_tables[jt]
+                    .entries()
+                    .any(|(_, ebb)| lr.is_livein(ebb, ctx))
             }
         }
     }
diff --git a/lib/codegen/src/regalloc/liveness.rs b/lib/codegen/src/regalloc/liveness.rs
index 01f72d9adb..8877179e43 100644
--- a/lib/codegen/src/regalloc/liveness.rs
+++ b/lib/codegen/src/regalloc/liveness.rs
@@ -220,8 +220,7 @@ fn get_or_create<'a>(
                         func.dfg
                             .call_signature(inst)
                             .map(|sig| Affinity::abi(&func.dfg.signatures[sig].returns[rnum], isa))
-                    })
-                    .unwrap_or_default();
+                    }).unwrap_or_default();
             }
             ValueDef::Param(ebb, num) => {
                 def = ebb.into();
diff --git a/lib/codegen/src/regalloc/spilling.rs b/lib/codegen/src/regalloc/spilling.rs
index d1244c0774..92b632c30a 100644
--- a/lib/codegen/src/regalloc/spilling.rs
+++ b/lib/codegen/src/regalloc/spilling.rs
@@ -463,8 +463,7 @@ impl<'a> Context<'a> {
                     }
                 }
                 None
-            })
-            .min_by(|&a, &b| {
+            }).min_by(|&a, &b| {
                 // Find the minimum candidate according to the RPO of their defs.
                 self.domtree.rpo_cmp(
                     self.cur.func.dfg.value_def(a),
diff --git a/lib/codegen/src/verifier/flags.rs b/lib/codegen/src/verifier/flags.rs
index 0d16d17ef5..d3fda7555f 100644
--- a/lib/codegen/src/verifier/flags.rs
+++ b/lib/codegen/src/verifier/flags.rs
@@ -113,7 +113,8 @@ impl<'a> FlagsVerifier<'a> {
                     .encinfo
                     .as_ref()
                     .and_then(|ei| ei.operand_constraints(self.func.encodings[inst]))
-                    .map_or(false, |c| c.clobbers_flags) && live_val.is_some()
+                    .map_or(false, |c| c.clobbers_flags)
+                    && live_val.is_some()
                 {
                     return fatal!(errors, inst, "encoding clobbers live CPU flags in {}", live);
                 }
diff --git a/lib/codegen/src/verifier/mod.rs b/lib/codegen/src/verifier/mod.rs
index 51aa484525..40f8302592 100644
--- a/lib/codegen/src/verifier/mod.rs
+++ b/lib/codegen/src/verifier/mod.rs
@@ -941,11 +941,11 @@ impl<'a> Verifier<'a> {
                     );
                 }
                 // The defining EBB dominates the instruction using this value.
-                if is_reachable
-                    && !self
-                        .expected_domtree
-                        .dominates(ebb, loc_inst, &self.func.layout)
-                {
+                if is_reachable && !self.expected_domtree.dominates(
+                    ebb,
+                    loc_inst,
+                    &self.func.layout,
+                ) {
                     return fatal!(
                         errors,
                         loc_inst,
@@ -1039,7 +1039,8 @@ impl<'a> Verifier<'a> {
         for (&prev_ebb, &next_ebb) in domtree.cfg_postorder().iter().adjacent_pairs() {
             if self
                 .expected_domtree
-                .rpo_cmp(prev_ebb, next_ebb, &self.func.layout) != Ordering::Greater
+                .rpo_cmp(prev_ebb, next_ebb, &self.func.layout)
+                != Ordering::Greater
             {
                 return fatal!(
                     errors,
@@ -1586,8 +1587,8 @@ impl<'a> Verifier<'a> {
 
         let encoding = self.func.encodings[inst];
         if encoding.is_legal() {
-            let mut encodings =
-                isa.legal_encodings(
+            let mut encodings = isa
+                .legal_encodings(
                     &self.func,
                     &self.func.dfg[inst],
                     self.func.dfg.ctrl_typevar(inst),
diff --git a/lib/entity/src/lib.rs b/lib/entity/src/lib.rs
index dd666c6ac7..a1d07db442 100644
--- a/lib/entity/src/lib.rs
+++ b/lib/entity/src/lib.rs
@@ -32,13 +32,25 @@
 #![deny(missing_docs, trivial_numeric_casts, unused_extern_crates)]
 #![warn(unused_import_braces)]
 #![cfg_attr(feature = "std", deny(unstable_features))]
-#![cfg_attr(feature = "clippy", plugin(clippy(conf_file = "../../clippy.toml")))]
-#![cfg_attr(feature = "cargo-clippy", allow(new_without_default, new_without_default_derive))]
+#![cfg_attr(
+    feature = "clippy",
+    plugin(clippy(conf_file = "../../clippy.toml"))
+)]
+#![cfg_attr(
+    feature = "cargo-clippy",
+    allow(new_without_default, new_without_default_derive)
+)]
 #![cfg_attr(
     feature = "cargo-clippy",
     warn(
-        float_arithmetic, mut_mut, nonminimal_bool, option_map_unwrap_or, option_map_unwrap_or_else,
-        print_stdout, unicode_not_nfc, use_self
+        float_arithmetic,
+        mut_mut,
+        nonminimal_bool,
+        option_map_unwrap_or,
+        option_map_unwrap_or_else,
+        print_stdout,
+        unicode_not_nfc,
+        use_self
     )
 )]
 // Turns on no_std and alloc features if std is not available.
diff --git a/lib/faerie/src/backend.rs b/lib/faerie/src/backend.rs
index 6aa948703e..908eb1411d 100644
--- a/lib/faerie/src/backend.rs
+++ b/lib/faerie/src/backend.rs
@@ -228,8 +228,7 @@ impl Backend for FaerieBackend {
                     from: name,
                     to,
                     at: u64::from(offset),
-                })
-                .map_err(|e| ModuleError::Backend(e.to_string()))?;
+                }).map_err(|e| ModuleError::Backend(e.to_string()))?;
         }
         for &(offset, id, addend) in data_relocs {
             debug_assert_eq!(
@@ -242,8 +241,7 @@ impl Backend for FaerieBackend {
                     from: name,
                     to,
                     at: u64::from(offset),
-                })
-                .map_err(|e| ModuleError::Backend(e.to_string()))?;
+                }).map_err(|e| ModuleError::Backend(e.to_string()))?;
         }
 
         self.artifact
@@ -409,8 +407,7 @@ impl<'a> RelocSink for FaerieRelocSink<'a> {
                     reloc: raw_reloc,
                     addend: addend_i32,
                 },
-            )
-            .expect("faerie relocation error");
+            ).expect("faerie relocation error");
     }
 
     fn reloc_jt(&mut self, _offset: CodeOffset, _reloc: Reloc, _jt: ir::JumpTable) {
diff --git a/lib/faerie/src/lib.rs b/lib/faerie/src/lib.rs
index 078488a953..0b9187a468 100644
--- a/lib/faerie/src/lib.rs
+++ b/lib/faerie/src/lib.rs
@@ -2,15 +2,32 @@
 //!
 //! Users of this module should not have to depend on faerie directly.
 
-#![deny(missing_docs, trivial_numeric_casts, unused_extern_crates, unstable_features)]
+#![deny(
+    missing_docs,
+    trivial_numeric_casts,
+    unused_extern_crates,
+    unstable_features
+)]
 #![warn(unused_import_braces)]
-#![cfg_attr(feature = "clippy", plugin(clippy(conf_file = "../../clippy.toml")))]
-#![cfg_attr(feature = "cargo-clippy", allow(new_without_default, new_without_default_derive))]
+#![cfg_attr(
+    feature = "clippy",
+    plugin(clippy(conf_file = "../../clippy.toml"))
+)]
+#![cfg_attr(
+    feature = "cargo-clippy",
+    allow(new_without_default, new_without_default_derive)
+)]
 #![cfg_attr(
     feature = "cargo-clippy",
     warn(
-        float_arithmetic, mut_mut, nonminimal_bool, option_map_unwrap_or, option_map_unwrap_or_else,
-        print_stdout, unicode_not_nfc, use_self
+        float_arithmetic,
+        mut_mut,
+        nonminimal_bool,
+        option_map_unwrap_or,
+        option_map_unwrap_or_else,
+        print_stdout,
+        unicode_not_nfc,
+        use_self
     )
 )]
 
diff --git a/lib/filetests/src/concurrent.rs b/lib/filetests/src/concurrent.rs
index df9034618b..44963cc466 100644
--- a/lib/filetests/src/concurrent.rs
+++ b/lib/filetests/src/concurrent.rs
@@ -106,8 +106,7 @@ fn heartbeat_thread(replies: Sender<Reply>) -> thread::JoinHandle<()> {
             while replies.send(Reply::Tick).is_ok() {
                 thread::sleep(Duration::from_secs(1));
             }
-        })
-        .unwrap()
+        }).unwrap()
 }
 
 /// Spawn a worker thread running tests.
@@ -154,6 +153,5 @@ fn worker_thread(
             // Timing is accumulated independently per thread.
             // Timings from this worker thread will be aggregated by `ConcurrentRunner::join()`.
             timing::take_current()
-        })
-        .unwrap()
+        }).unwrap()
 }
diff --git a/lib/filetests/src/lib.rs b/lib/filetests/src/lib.rs
index f8e796182e..24086d88ab 100644
--- a/lib/filetests/src/lib.rs
+++ b/lib/filetests/src/lib.rs
@@ -3,7 +3,12 @@
 //! This crate contains the main test driver as well as implementations of the
 //! available filetest commands.
 
-#![deny(missing_docs, trivial_numeric_casts, unused_extern_crates, unstable_features)]
+#![deny(
+    missing_docs,
+    trivial_numeric_casts,
+    unused_extern_crates,
+    unstable_features
+)]
 #![warn(unused_import_braces)]
 #![cfg_attr(feature = "cargo-clippy",
     allow(
@@ -13,7 +18,11 @@
 #![cfg_attr(
     feature = "cargo-clippy",
     warn(
-        mut_mut, nonminimal_bool, option_map_unwrap_or, option_map_unwrap_or_else, unicode_not_nfc,
+        mut_mut,
+        nonminimal_bool,
+        option_map_unwrap_or,
+        option_map_unwrap_or_else,
+        unicode_not_nfc,
         use_self
     )
 )]
diff --git a/lib/filetests/src/runner.rs b/lib/filetests/src/runner.rs
index a05f54c390..ff6f203590 100644
--- a/lib/filetests/src/runner.rs
+++ b/lib/filetests/src/runner.rs
@@ -315,8 +315,7 @@ impl TestRunner {
                     ..
                 } => Some(dur),
                 _ => None,
-            })
-            .collect::<Vec<_>>();
+            }).collect::<Vec<_>>();
 
         // Get me some real data, kid.
         let len = times.len();
diff --git a/lib/frontend/src/frontend.rs b/lib/frontend/src/frontend.rs
index 0a6732a89b..405de81f51 100644
--- a/lib/frontend/src/frontend.rs
+++ b/lib/frontend/src/frontend.rs
@@ -517,11 +517,10 @@ impl<'a> FunctionBuilder<'a> {
             None => false,
             Some(entry) => self.position.ebb.unwrap() == entry,
         };
-        !is_entry && self.func_ctx.ssa.is_sealed(self.position.ebb.unwrap())
-            && !self
-                .func_ctx
-                .ssa
-                .has_any_predecessors(self.position.ebb.unwrap())
+        !is_entry && self.func_ctx.ssa.is_sealed(self.position.ebb.unwrap()) && !self
+            .func_ctx
+            .ssa
+            .has_any_predecessors(self.position.ebb.unwrap())
     }
 
     /// Returns `true` if and only if no instructions have been added since the last call to
diff --git a/lib/frontend/src/lib.rs b/lib/frontend/src/lib.rs
index aec18899cb..9b90a5df07 100644
--- a/lib/frontend/src/lib.rs
+++ b/lib/frontend/src/lib.rs
@@ -163,8 +163,14 @@
 #![cfg_attr(
     feature = "cargo-clippy",
     warn(
-        float_arithmetic, mut_mut, nonminimal_bool, option_map_unwrap_or, option_map_unwrap_or_else,
-        print_stdout, unicode_not_nfc, use_self
+        float_arithmetic,
+        mut_mut,
+        nonminimal_bool,
+        option_map_unwrap_or,
+        option_map_unwrap_or_else,
+        print_stdout,
+        unicode_not_nfc,
+        use_self
     )
 )]
 #![cfg_attr(not(feature = "std"), no_std)]
diff --git a/lib/module/src/lib.rs b/lib/module/src/lib.rs
index 479288df57..3c569d0ec8 100644
--- a/lib/module/src/lib.rs
+++ b/lib/module/src/lib.rs
@@ -3,13 +3,25 @@
 #![deny(missing_docs, trivial_numeric_casts, unused_extern_crates)]
 #![warn(unused_import_braces)]
 #![cfg_attr(feature = "std", deny(unstable_features))]
-#![cfg_attr(feature = "clippy", plugin(clippy(conf_file = "../../clippy.toml")))]
-#![cfg_attr(feature = "cargo-clippy", allow(new_without_default, new_without_default_derive))]
+#![cfg_attr(
+    feature = "clippy",
+    plugin(clippy(conf_file = "../../clippy.toml"))
+)]
+#![cfg_attr(
+    feature = "cargo-clippy",
+    allow(new_without_default, new_without_default_derive)
+)]
 #![cfg_attr(
     feature = "cargo-clippy",
     warn(
-        float_arithmetic, mut_mut, nonminimal_bool, option_map_unwrap_or, option_map_unwrap_or_else,
-        print_stdout, unicode_not_nfc, use_self
+        float_arithmetic,
+        mut_mut,
+        nonminimal_bool,
+        option_map_unwrap_or,
+        option_map_unwrap_or_else,
+        print_stdout,
+        unicode_not_nfc,
+        use_self
     )
 )]
 // Turns on no_std and alloc features if std is not available.
diff --git a/lib/module/src/module.rs b/lib/module/src/module.rs
index 0f04440f2a..bdeb90c627 100644
--- a/lib/module/src/module.rs
+++ b/lib/module/src/module.rs
@@ -129,7 +129,10 @@ pub enum ModuleError {
     #[fail(display = "Duplicate definition of identifier: {}", _0)]
     DuplicateDefinition(String),
     /// Indicates an identifier was defined, but was declared as an import
-    #[fail(display = "Invalid to define identifier declared as an import: {}", _0)]
+    #[fail(
+        display = "Invalid to define identifier declared as an import: {}",
+        _0
+    )]
     InvalidImportDefinition(String),
     /// Wraps a `cranelift-codegen` error
     #[fail(display = "Compilation error: {}", _0)]
diff --git a/lib/native/src/lib.rs b/lib/native/src/lib.rs
index 3d4e4bac2c..7d88984db5 100644
--- a/lib/native/src/lib.rs
+++ b/lib/native/src/lib.rs
@@ -1,15 +1,32 @@
 //! Performs autodetection of the host for the purposes of running
 //! Cranelift to generate code to run on the same machine.
 
-#![deny(missing_docs, trivial_numeric_casts, unused_extern_crates, unstable_features)]
+#![deny(
+    missing_docs,
+    trivial_numeric_casts,
+    unused_extern_crates,
+    unstable_features
+)]
 #![warn(unused_import_braces)]
-#![cfg_attr(feature = "clippy", plugin(clippy(conf_file = "../../clippy.toml")))]
-#![cfg_attr(feature = "cargo-clippy", allow(new_without_default, new_without_default_derive))]
+#![cfg_attr(
+    feature = "clippy",
+    plugin(clippy(conf_file = "../../clippy.toml"))
+)]
+#![cfg_attr(
+    feature = "cargo-clippy",
+    allow(new_without_default, new_without_default_derive)
+)]
 #![cfg_attr(
     feature = "cargo-clippy",
     warn(
-        float_arithmetic, mut_mut, nonminimal_bool, option_map_unwrap_or, option_map_unwrap_or_else,
-        print_stdout, unicode_not_nfc, use_self
+        float_arithmetic,
+        mut_mut,
+        nonminimal_bool,
+        option_map_unwrap_or,
+        option_map_unwrap_or_else,
+        print_stdout,
+        unicode_not_nfc,
+        use_self
     )
 )]
 #![cfg_attr(not(feature = "std"), no_std)]
diff --git a/lib/reader/src/lexer.rs b/lib/reader/src/lexer.rs
index 5a2a0124a2..c1d9a81d93 100644
--- a/lib/reader/src/lexer.rs
+++ b/lib/reader/src/lexer.rs
@@ -322,8 +322,7 @@ impl<'a> Lexer<'a> {
                 .and_then(|(prefix, number)| {
                     Self::numbered_entity(prefix, number)
                         .or_else(|| Self::value_type(text, prefix, number))
-                })
-                .unwrap_or_else(|| match text {
+                }).unwrap_or_else(|| match text {
                     "iflags" => Token::Type(types::IFLAGS),
                     "fflags" => Token::Type(types::FFLAGS),
                     _ => Token::Identifier(text),
diff --git a/lib/reader/src/lib.rs b/lib/reader/src/lib.rs
index 2873a644ac..bfa9bc8207 100644
--- a/lib/reader/src/lib.rs
+++ b/lib/reader/src/lib.rs
@@ -3,15 +3,32 @@
 //! The `cranelift_reader` library supports reading .clif files. This functionality is needed for
 //! testing Cranelift, but is not essential for a JIT compiler.
 
-#![deny(missing_docs, trivial_numeric_casts, unused_extern_crates, unstable_features)]
+#![deny(
+    missing_docs,
+    trivial_numeric_casts,
+    unused_extern_crates,
+    unstable_features
+)]
 #![warn(unused_import_braces)]
-#![cfg_attr(feature = "clippy", plugin(clippy(conf_file = "../../clippy.toml")))]
-#![cfg_attr(feature = "cargo-clippy", allow(new_without_default, new_without_default_derive))]
+#![cfg_attr(
+    feature = "clippy",
+    plugin(clippy(conf_file = "../../clippy.toml"))
+)]
+#![cfg_attr(
+    feature = "cargo-clippy",
+    allow(new_without_default, new_without_default_derive)
+)]
 #![cfg_attr(
     feature = "cargo-clippy",
     warn(
-        float_arithmetic, mut_mut, nonminimal_bool, option_map_unwrap_or, option_map_unwrap_or_else,
-        print_stdout, unicode_not_nfc, use_self
+        float_arithmetic,
+        mut_mut,
+        nonminimal_bool,
+        option_map_unwrap_or,
+        option_map_unwrap_or_else,
+        print_stdout,
+        unicode_not_nfc,
+        use_self
     )
 )]
 
diff --git a/lib/reader/src/parser.rs b/lib/reader/src/parser.rs
index 4a116699b8..1594d183b6 100644
--- a/lib/reader/src/parser.rs
+++ b/lib/reader/src/parser.rs
@@ -969,9 +969,10 @@ impl<'a> Parser<'a> {
                         self.consume();
                         match self.token() {
                             Some(Token::Integer(index_str)) => {
-                                let index: u32 = u32::from_str_radix(index_str, 10).map_err(
-                                    |_| self.error("the integer given overflows the u32 type"),
-                                )?;
+                                let index: u32 =
+                                    u32::from_str_radix(index_str, 10).map_err(|_| {
+                                        self.error("the integer given overflows the u32 type")
+                                    })?;
                                 self.consume();
                                 Ok(ExternalName::user(namespace, index))
                             }
@@ -2557,7 +2558,7 @@ mod tests {
                                              v1 = iadd_imm v3, 17
                                            }",
         ).parse_function(None)
-            .unwrap();
+        .unwrap();
         assert_eq!(func.name.to_string(), "%qux");
         let v4 = details.map.lookup_str("v4").unwrap();
         assert_eq!(v4.to_string(), "v4");
@@ -2633,7 +2634,7 @@ mod tests {
                                        ss1 = spill_slot 1
                                      }",
         ).parse_function(None)
-            .unwrap();
+        .unwrap();
         assert_eq!(func.name.to_string(), "%foo");
         let mut iter = func.stack_slots.keys();
         let _ss0 = iter.next().unwrap();
@@ -2656,8 +2657,8 @@ mod tests {
                                     ss1  = spill_slot 1
                                 }",
             ).parse_function(None)
-                .unwrap_err()
-                .to_string(),
+            .unwrap_err()
+            .to_string(),
             "3: duplicate entity: ss1"
         );
     }
@@ -2670,7 +2671,7 @@ mod tests {
                                      ebb4(v3: i32):
                                      }",
         ).parse_function(None)
-            .unwrap();
+        .unwrap();
         assert_eq!(func.name.to_string(), "%ebbs");
 
         let mut ebbs = func.layout.ebbs();
@@ -2692,7 +2693,7 @@ mod tests {
                 ebb0:
                     return 2",
         ).parse_function(None)
-            .unwrap_err();
+        .unwrap_err();
 
         assert_eq!(location.line_number, 3);
         assert_eq!(message, "duplicate entity: ebb0");
@@ -2705,7 +2706,7 @@ mod tests {
                 jt0 = jump_table 0, 0
                 jt0 = jump_table 0, 0",
         ).parse_function(None)
-            .unwrap_err();
+        .unwrap_err();
 
         assert_eq!(location.line_number, 3);
         assert_eq!(message, "duplicate entity: jt0");
@@ -2718,7 +2719,7 @@ mod tests {
                 ss0 = explicit_slot 8
                 ss0 = explicit_slot 8",
         ).parse_function(None)
-            .unwrap_err();
+        .unwrap_err();
 
         assert_eq!(location.line_number, 3);
         assert_eq!(message, "duplicate entity: ss0");
@@ -2731,7 +2732,7 @@ mod tests {
                 gv0 = vmctx
                 gv0 = vmctx",
         ).parse_function(None)
-            .unwrap_err();
+        .unwrap_err();
 
         assert_eq!(location.line_number, 3);
         assert_eq!(message, "duplicate entity: gv0");
@@ -2744,7 +2745,7 @@ mod tests {
                 heap0 = static gv0, min 0x1000, bound 0x10_0000, guard 0x1000
                 heap0 = static gv0, min 0x1000, bound 0x10_0000, guard 0x1000",
         ).parse_function(None)
-            .unwrap_err();
+        .unwrap_err();
 
         assert_eq!(location.line_number, 3);
         assert_eq!(message, "duplicate entity: heap0");
@@ -2757,7 +2758,7 @@ mod tests {
                 sig0 = ()
                 sig0 = ()",
         ).parse_function(None)
-            .unwrap_err();
+        .unwrap_err();
 
         assert_eq!(location.line_number, 3);
         assert_eq!(message, "duplicate entity: sig0");
@@ -2771,7 +2772,7 @@ mod tests {
                 fn0 = %foo sig0
                 fn0 = %foo sig0",
         ).parse_function(None)
-            .unwrap_err();
+        .unwrap_err();
 
         assert_eq!(location.line_number, 4);
         assert_eq!(message, "duplicate entity: fn0");
@@ -2791,7 +2792,7 @@ mod tests {
                          } ; Trailing.
                          ; More trailing.",
         ).parse_function(None)
-            .unwrap();
+        .unwrap();
         assert_eq!(func.name.to_string(), "%comment");
         assert_eq!(comments.len(), 8); // no 'before' comment.
         assert_eq!(
@@ -2868,7 +2869,7 @@ mod tests {
                           isa riscv
                           function %foo() system_v {}",
         ).unwrap()
-            .isa_spec
+        .isa_spec
         {
             IsaSpec::None(_) => panic!("Expected some ISA"),
             IsaSpec::Some(v) => {
@@ -2887,8 +2888,8 @@ mod tests {
                                              trap int_divz
                                            }",
         ).parse_function(None)
-            .unwrap()
-            .0;
+        .unwrap()
+        .0;
         assert_eq!(func.name.to_string(), "u1:2");
 
         // Invalid characters in the name:
diff --git a/lib/serde/src/clif-json.rs b/lib/serde/src/clif-json.rs
index 228b13703d..bab63ace97 100644
--- a/lib/serde/src/clif-json.rs
+++ b/lib/serde/src/clif-json.rs
@@ -1,14 +1,30 @@
 //! Utility for `cranelift_serde`.
 
-#![deny(missing_docs, trivial_numeric_casts, unused_extern_crates, unstable_features)]
+#![deny(
+    missing_docs,
+    trivial_numeric_casts,
+    unused_extern_crates,
+    unstable_features
+)]
 #![warn(unused_import_braces)]
-#![cfg_attr(feature = "clippy", plugin(clippy(conf_file = "../../clippy.toml")))]
-#![cfg_attr(feature = "cargo-clippy", allow(new_without_default, new_without_default_derive))]
+#![cfg_attr(
+    feature = "clippy",
+    plugin(clippy(conf_file = "../../clippy.toml"))
+)]
+#![cfg_attr(
+    feature = "cargo-clippy",
+    allow(new_without_default, new_without_default_derive)
+)]
 #![cfg_attr(
     feature = "cargo-clippy",
     warn(
-        float_arithmetic, mut_mut, nonminimal_bool, option_map_unwrap_or, option_map_unwrap_or_else,
-        unicode_not_nfc, use_self
+        float_arithmetic,
+        mut_mut,
+        nonminimal_bool,
+        option_map_unwrap_or,
+        option_map_unwrap_or_else,
+        unicode_not_nfc,
+        use_self
     )
 )]
 
@@ -67,8 +83,7 @@ fn main() {
                         .value_name("FILE")
                         .help("Input file for serialization"),
                 ),
-        )
-        .subcommand(
+        ).subcommand(
             SubCommand::with_name("deserialize")
                 .about("Deserializes Cranelift IR into JSON.")
                 .arg(
@@ -77,8 +92,7 @@ fn main() {
                         .value_name("FILE")
                         .help("Input file for deserialization"),
                 ),
-        )
-        .get_matches();
+        ).get_matches();
 
     let res_serde = match matches.subcommand() {
         ("serialize", Some(m)) => {
diff --git a/lib/simplejit/src/lib.rs b/lib/simplejit/src/lib.rs
index 99297f33b0..50f84f67eb 100644
--- a/lib/simplejit/src/lib.rs
+++ b/lib/simplejit/src/lib.rs
@@ -1,14 +1,31 @@
 //! Top-level lib.rs for `cranelift_simplejit`.
 
-#![deny(missing_docs, trivial_numeric_casts, unused_extern_crates, unstable_features)]
+#![deny(
+    missing_docs,
+    trivial_numeric_casts,
+    unused_extern_crates,
+    unstable_features
+)]
 #![warn(unused_import_braces)]
-#![cfg_attr(feature = "clippy", plugin(clippy(conf_file = "../../clippy.toml")))]
-#![cfg_attr(feature = "cargo-clippy", allow(new_without_default, new_without_default_derive))]
+#![cfg_attr(
+    feature = "clippy",
+    plugin(clippy(conf_file = "../../clippy.toml"))
+)]
+#![cfg_attr(
+    feature = "cargo-clippy",
+    allow(new_without_default, new_without_default_derive)
+)]
 #![cfg_attr(
     feature = "cargo-clippy",
     warn(
-        float_arithmetic, mut_mut, nonminimal_bool, option_map_unwrap_or, option_map_unwrap_or_else,
-        print_stdout, unicode_not_nfc, use_self
+        float_arithmetic,
+        mut_mut,
+        nonminimal_bool,
+        option_map_unwrap_or,
+        option_map_unwrap_or_else,
+        print_stdout,
+        unicode_not_nfc,
+        use_self
     )
 )]
 
diff --git a/lib/umbrella/src/lib.rs b/lib/umbrella/src/lib.rs
index d56bdd6f71..79d262ecfd 100644
--- a/lib/umbrella/src/lib.rs
+++ b/lib/umbrella/src/lib.rs
@@ -1,14 +1,31 @@
 //! Cranelift umbrella crate, providing a convenient one-line dependency.
 
-#![deny(missing_docs, trivial_numeric_casts, unused_extern_crates, unstable_features)]
+#![deny(
+    missing_docs,
+    trivial_numeric_casts,
+    unused_extern_crates,
+    unstable_features
+)]
 #![warn(unused_import_braces)]
-#![cfg_attr(feature = "clippy", plugin(clippy(conf_file = "../../clippy.toml")))]
-#![cfg_attr(feature = "cargo-clippy", allow(new_without_default, new_without_default_derive))]
+#![cfg_attr(
+    feature = "clippy",
+    plugin(clippy(conf_file = "../../clippy.toml"))
+)]
+#![cfg_attr(
+    feature = "cargo-clippy",
+    allow(new_without_default, new_without_default_derive)
+)]
 #![cfg_attr(
     feature = "cargo-clippy",
     warn(
-        float_arithmetic, mut_mut, nonminimal_bool, option_map_unwrap_or, option_map_unwrap_or_else,
-        print_stdout, unicode_not_nfc, use_self
+        float_arithmetic,
+        mut_mut,
+        nonminimal_bool,
+        option_map_unwrap_or,
+        option_map_unwrap_or_else,
+        print_stdout,
+        unicode_not_nfc,
+        use_self
     )
 )]
 
diff --git a/lib/wasm/src/environ/spec.rs b/lib/wasm/src/environ/spec.rs
index bc8e3fa9fa..31640635b5 100644
--- a/lib/wasm/src/environ/spec.rs
+++ b/lib/wasm/src/environ/spec.rs
@@ -35,7 +35,11 @@ pub enum WasmError {
     ///
     /// This error code is used by a WebAssembly translator when it encounters invalid WebAssembly
     /// code. This should never happen for validated WebAssembly code.
-    #[fail(display = "Invalid input WebAssembly code at offset {}: {}", _1, _0)]
+    #[fail(
+        display = "Invalid input WebAssembly code at offset {}: {}",
+        _1,
+        _0
+    )]
     InvalidWebAssembly {
         /// A string describing the validation error.
         message: &'static str,
diff --git a/lib/wasm/src/lib.rs b/lib/wasm/src/lib.rs
index a559ae941d..95667d870d 100644
--- a/lib/wasm/src/lib.rs
+++ b/lib/wasm/src/lib.rs
@@ -12,13 +12,25 @@
 #![deny(missing_docs, trivial_numeric_casts, unused_extern_crates)]
 #![warn(unused_import_braces)]
 #![cfg_attr(feature = "std", deny(unstable_features))]
-#![cfg_attr(feature = "clippy", plugin(clippy(conf_file = "../../clippy.toml")))]
-#![cfg_attr(feature = "cargo-clippy", allow(new_without_default, new_without_default_derive))]
+#![cfg_attr(
+    feature = "clippy",
+    plugin(clippy(conf_file = "../../clippy.toml"))
+)]
+#![cfg_attr(
+    feature = "cargo-clippy",
+    allow(new_without_default, new_without_default_derive)
+)]
 #![cfg_attr(
     feature = "cargo-clippy",
     warn(
-        float_arithmetic, mut_mut, nonminimal_bool, option_map_unwrap_or, option_map_unwrap_or_else,
-        print_stdout, unicode_not_nfc, use_self
+        float_arithmetic,
+        mut_mut,
+        nonminimal_bool,
+        option_map_unwrap_or,
+        option_map_unwrap_or_else,
+        print_stdout,
+        unicode_not_nfc,
+        use_self
     )
 )]
 #![cfg_attr(not(feature = "std"), no_std)]
diff --git a/lib/wasm/tests/wasm_testsuite.rs b/lib/wasm/tests/wasm_testsuite.rs
index a64ec63e6b..f7cc0e678e 100644
--- a/lib/wasm/tests/wasm_testsuite.rs
+++ b/lib/wasm/tests/wasm_testsuite.rs
@@ -30,8 +30,7 @@ fn testsuite() {
                 }
             }
             false
-        })
-        .collect();
+        }).collect();
     paths.sort_by_key(|dir| dir.path());
     let flags = Flags::new(settings::builder());
     for path in paths {