diff --git a/lib/cretonne/src/dbg.rs b/lib/cretonne/src/dbg.rs
index 7e5cd2777c..ace22b6c47 100644
--- a/lib/cretonne/src/dbg.rs
+++ b/lib/cretonne/src/dbg.rs
@@ -8,7 +8,6 @@
 ///
 /// The output will appear in files named `cretonne.dbg.*`, where the suffix is named after the
 /// thread doing the logging.
-
 #[cfg(not(feature = "no_std"))]
 use std::cell::RefCell;
 #[cfg(not(feature = "no_std"))]
diff --git a/lib/cretonne/src/lib.rs b/lib/cretonne/src/lib.rs
index c448cc1d0f..22914cc17b 100644
--- a/lib/cretonne/src/lib.rs
+++ b/lib/cretonne/src/lib.rs
@@ -76,4 +76,4 @@ mod std {
     pub mod error {
         pub use error_core::Error;
     }
-}
\ No newline at end of file
+}
diff --git a/lib/cretonne/src/simple_gvn.rs b/lib/cretonne/src/simple_gvn.rs
index e0350ad687..8f09398c82 100644
--- a/lib/cretonne/src/simple_gvn.rs
+++ b/lib/cretonne/src/simple_gvn.rs
@@ -7,8 +7,7 @@ use ir::{InstructionData, Function, Inst, Opcode, Type};
 use scoped_hash_map::ScopedHashMap;
 use timing;
 
-#[cfg(feature = "no_std")]
-use alloc::Vec;
+use std::vec::Vec;
 
 /// Test whether the given opcode is unsafe to even consider for GVN.
 fn trivially_unsafe_for_gvn(opcode: Opcode) -> bool {
diff --git a/lib/cretonne/src/topo_order.rs b/lib/cretonne/src/topo_order.rs
index 660179f1f9..f2c57f8166 100644
--- a/lib/cretonne/src/topo_order.rs
+++ b/lib/cretonne/src/topo_order.rs
@@ -4,8 +4,7 @@ use entity::SparseSet;
 use dominator_tree::DominatorTree;
 use ir::{Ebb, Layout};
 
-#[cfg(feature = "no_std")]
-use alloc::Vec;
+use std::vec::Vec;
 
 /// Present EBBs in a topological order such that all dominating EBBs are guaranteed to be visited
 /// before the current EBB.
diff --git a/lib/frontend/src/lib.rs b/lib/frontend/src/lib.rs
index 37a3504bf5..84af6f976b 100644
--- a/lib/frontend/src/lib.rs
+++ b/lib/frontend/src/lib.rs
@@ -161,4 +161,4 @@ mod ssa;
 mod std {
     pub use alloc::vec;
     pub use core::*;
-}
\ No newline at end of file
+}
diff --git a/lib/wasm/src/code_translator.rs b/lib/wasm/src/code_translator.rs
index ea33f311a9..4a66bce463 100644
--- a/lib/wasm/src/code_translator.rs
+++ b/lib/wasm/src/code_translator.rs
@@ -34,7 +34,6 @@ use std::collections::{HashMap, hash_map};
 use environ::{FuncEnvironment, GlobalValue};
 use std::{i32, u32};
 
-// this is for no_std builds, but has no affect on regular builds
 use std::vec::Vec;
 
 /// Translates wasm operators into Cretonne IL instructions. Returns `true` if it inserted
diff --git a/lib/wasm/src/environ/dummy.rs b/lib/wasm/src/environ/dummy.rs
index 9238cbf665..d0dba2c817 100644
--- a/lib/wasm/src/environ/dummy.rs
+++ b/lib/wasm/src/environ/dummy.rs
@@ -11,7 +11,6 @@ use cretonne::settings;
 use wasmparser;
 use std::error::Error;
 
-// this is for no_std builds, but has no affect on regular builds
 use std::vec::Vec;
 use std::string::String;
 
diff --git a/lib/wasm/src/environ/spec.rs b/lib/wasm/src/environ/spec.rs
index c8a8f54111..dfc2685f33 100644
--- a/lib/wasm/src/environ/spec.rs
+++ b/lib/wasm/src/environ/spec.rs
@@ -6,7 +6,6 @@ use cretonne::settings::Flags;
 use translation_utils::{SignatureIndex, FunctionIndex, TableIndex, GlobalIndex, MemoryIndex,
                         Global, Table, Memory};
 
-// this is for no_std builds, but has no affect on regular builds
 use std::vec::Vec;
 use std::string::String;
 
diff --git a/lib/wasm/src/lib.rs b/lib/wasm/src/lib.rs
index dde500af97..9005e6cd42 100644
--- a/lib/wasm/src/lib.rs
+++ b/lib/wasm/src/lib.rs
@@ -53,4 +53,4 @@ mod std {
     pub mod error {
         pub use error_core::Error;
     }
-}
\ No newline at end of file
+}
diff --git a/lib/wasm/src/module_translator.rs b/lib/wasm/src/module_translator.rs
index 2786f9094e..43a47b68af 100644
--- a/lib/wasm/src/module_translator.rs
+++ b/lib/wasm/src/module_translator.rs
@@ -8,7 +8,6 @@ use sections_translator::{SectionParsingError, parse_function_signatures, parse_
                           parse_elements_section, parse_data_section};
 use environ::ModuleEnvironment;
 
-// this is for no_std builds, but has no affect on regular builds
 use std::string::String;
 
 /// Translate a sequence of bytes forming a valid Wasm binary into a list of valid Cretonne IL
diff --git a/lib/wasm/src/sections_translator.rs b/lib/wasm/src/sections_translator.rs
index ff641a6889..a1e172aa7c 100644
--- a/lib/wasm/src/sections_translator.rs
+++ b/lib/wasm/src/sections_translator.rs
@@ -17,7 +17,6 @@ use wasmparser;
 use std::str::from_utf8;
 use environ::ModuleEnvironment;
 
-// this is for no_std builds, but has no affect on regular builds
 use std::vec::Vec;
 use std::string::String;
 
diff --git a/lib/wasm/src/state.rs b/lib/wasm/src/state.rs
index 625e39b4e9..cb8aebb653 100644
--- a/lib/wasm/src/state.rs
+++ b/lib/wasm/src/state.rs
@@ -8,7 +8,6 @@ use environ::{FuncEnvironment, GlobalValue};
 use std::collections::HashMap;
 use translation_utils::{GlobalIndex, MemoryIndex, SignatureIndex, FunctionIndex};
 
-// this is for no_std builds, but has no affect on regular builds
 use std::vec::Vec;
 
 /// A control stack frame can be an `if`, a `block` or a `loop`, each one having the following