Update to the latest stable rustfmt, 0.4.2-stable (febbb36 2018-04-12).

lib/codegen/src/isa/arm32/mod.rs

@@ -9,8 +9,8 @@ pub mod settings;
 use super::super::settings as shared_settings;
 use binemit::{emit_function, CodeSink, MemoryCodeSink};
 use ir;
-use isa::Builder as IsaBuilder;
 use isa::enc_tables::{self as shared_enc_tables, lookup_enclist, Encodings};
+use isa::Builder as IsaBuilder;
 use isa::{EncInfo, RegClass, RegInfo, TargetIsa};
 use regalloc;
 use std::boxed::Box;

lib/codegen/src/isa/arm64/mod.rs

@@ -9,8 +9,8 @@ pub mod settings;
 use super::super::settings as shared_settings;
 use binemit::{emit_function, CodeSink, MemoryCodeSink};
 use ir;
-use isa::Builder as IsaBuilder;
 use isa::enc_tables::{lookup_enclist, Encodings};
+use isa::Builder as IsaBuilder;
 use isa::{EncInfo, RegClass, RegInfo, TargetIsa};
 use regalloc;
 use std::boxed::Box;

lib/codegen/src/isa/riscv/mod.rs

@@ -9,8 +9,8 @@ pub mod settings;
 use super::super::settings as shared_settings;
 use binemit::{emit_function, CodeSink, MemoryCodeSink};
 use ir;
-use isa::Builder as IsaBuilder;
 use isa::enc_tables::{self as shared_enc_tables, lookup_enclist, Encodings};
+use isa::Builder as IsaBuilder;
 use isa::{EncInfo, RegClass, RegInfo, TargetIsa};
 use regalloc;
 use std::boxed::Box;
@@ -113,8 +113,8 @@ impl TargetIsa for Isa {
 
 #[cfg(test)]
 mod tests {
-    use ir::{Function, InstructionData, Opcode};
     use ir::{immediates, types};
+    use ir::{Function, InstructionData, Opcode};
     use isa;
     use settings::{self, Configurable};
     use std::string::{String, ToString};

lib/codegen/src/isa/stack.rs

@@ -4,8 +4,8 @@
 //! defined in this module expresses the low-level details of accessing a stack slot from an
 //! encoded instruction.
 
-use ir::StackSlot;
 use ir::stackslot::{StackOffset, StackSlotKind, StackSlots};
+use ir::StackSlot;
 
 /// A method for referencing a stack slot in the current stack frame.
 ///

lib/codegen/src/isa/x86/mod.rs

@@ -9,8 +9,8 @@ pub mod settings;
 use super::super::settings as shared_settings;
 use binemit::{emit_function, CodeSink, MemoryCodeSink};
 use ir;
-use isa::Builder as IsaBuilder;
 use isa::enc_tables::{self as shared_enc_tables, lookup_enclist, Encodings};
+use isa::Builder as IsaBuilder;
 use isa::{EncInfo, RegClass, RegInfo, TargetIsa};
 use regalloc;
 use result;