diff --git a/lib/emscripten/src/env.rs b/lib/emscripten/src/env.rs
index ac03c420b..99c87a2b0 100644
--- a/lib/emscripten/src/env.rs
+++ b/lib/emscripten/src/env.rs
@@ -198,12 +198,12 @@ pub extern "C" fn ___build_environment(environ: c_int, instance: &mut Instance)
     const TOTAL_ENV_SIZE: u32 = 1024;
     let mut environment = instance.memory_offset_addr(0, environ as _) as *mut c_int;
     unsafe {
-        let (pool_offset, pool_slice): (u32, &mut [u8]) =
+        let (pool_offset, _pool_slice): (u32, &mut [u8]) =
             allocate_on_stack(TOTAL_ENV_SIZE as u32, instance);
-        let (env_offset, env_slice): (u32, &mut [u8]) =
+        let (env_offset, _env_slice): (u32, &mut [u8]) =
             allocate_on_stack((MAX_ENV_VALUES * 4) as u32, instance);
         let mut env_ptr = instance.memory_offset_addr(0, env_offset as _) as *mut c_int;
-        let mut pool_ptr = instance.memory_offset_addr(0, pool_offset as _) as *mut c_int;
+        let mut _pool_ptr = instance.memory_offset_addr(0, pool_offset as _) as *mut c_int;
         *env_ptr = pool_offset as i32;
         *environment = env_offset as i32;
 
diff --git a/lib/emscripten/src/exception.rs b/lib/emscripten/src/exception.rs
index a7b0e9e63..2ad682256 100644
--- a/lib/emscripten/src/exception.rs
+++ b/lib/emscripten/src/exception.rs
@@ -10,7 +10,7 @@ pub extern "C" fn ___cxa_allocate_exception(size: u32, instance: &mut Instance)
 
 /// emscripten: ___cxa_throw
 /// TODO: We don't have support for exceptions yet
-pub extern "C" fn ___cxa_throw(ptr: u32, ty: u32, destructor: u32, instance: &mut Instance) {
+pub extern "C" fn ___cxa_throw(_ptr: u32, ty: u32, destructor: u32, instance: &mut Instance) {
     debug!("emscripten::___cxa_throw");
     _abort();
 }
diff --git a/lib/emscripten/src/jmp.rs b/lib/emscripten/src/jmp.rs
index d32e6ce74..836359a08 100644
--- a/lib/emscripten/src/jmp.rs
+++ b/lib/emscripten/src/jmp.rs
@@ -1,5 +1,4 @@
 use libc::{c_int, c_void};
-use std::cell::UnsafeCell;
 use wasmer_runtime::Instance;
 
 /// setjmp
diff --git a/lib/emscripten/src/lib.rs b/lib/emscripten/src/lib.rs
index c94425af5..5db97d920 100644
--- a/lib/emscripten/src/lib.rs
+++ b/lib/emscripten/src/lib.rs
@@ -1,13 +1,8 @@
 #[macro_use]
 extern crate wasmer_runtime;
 
-#[macro_use]
-use wasmer_runtime::macros;
-
 use byteorder::{ByteOrder, LittleEndian};
-use hashbrown::{hash_map::Entry, HashMap};
-use libc::c_int;
-use std::cell::UnsafeCell;
+use hashbrown::HashMap;
 use std::mem;
 use wasmer_runtime::{
     export::{Context, Export, FuncPointer, GlobalPointer},
@@ -16,9 +11,8 @@ use wasmer_runtime::{
     types::{
         FuncSig, GlobalDesc,
         Type::{self, *},
-        Value,
     },
-    vm::{self, Func, LocalGlobal},
+    vm::LocalGlobal,
 };
 
 //#[cfg(test)]
diff --git a/lib/emscripten/src/utils.rs b/lib/emscripten/src/utils.rs
index 573c07805..b91e62876 100644
--- a/lib/emscripten/src/utils.rs
+++ b/lib/emscripten/src/utils.rs
@@ -3,10 +3,8 @@ use wasmer_runtime::{module::Module, Instance};
 use super::env;
 use libc::stat;
 use std::ffi::CStr;
-use std::mem::size_of;
 use std::os::raw::c_char;
 use std::slice;
-use std::sync::Arc;
 /// We check if a provided module is an Emscripten generated one
 pub fn is_emscripten_module(module: &Module) -> bool {
     for (_, import_name) in &module.0.imported_functions {
diff --git a/lib/runtime/src/instance.rs b/lib/runtime/src/instance.rs
index 56f0c10d7..d809b9cba 100644
--- a/lib/runtime/src/instance.rs
+++ b/lib/runtime/src/instance.rs
@@ -350,7 +350,7 @@ impl Namespace for Instance {
 
 // TODO Remove this later, only needed for compilation till emscripten is updated
 impl Instance {
-    pub fn memory_offset_addr(&self, index: usize, offset: usize) -> *const u8 {
+    pub fn memory_offset_addr(&self, _index: usize, _offset: usize) -> *const u8 {
         unimplemented!()
     }
 }
diff --git a/src/bin/wasmer.rs b/src/bin/wasmer.rs
index c1d48449e..a337c4749 100644
--- a/src/bin/wasmer.rs
+++ b/src/bin/wasmer.rs
@@ -6,13 +6,11 @@ use std::io;
 use std::io::Read;
 use std::path::PathBuf;
 use std::process::exit;
-use std::sync::Arc;
 
 use structopt::StructOpt;
 
 use wasmer::*;
 use wasmer_emscripten;
-use wasmer_runtime as runtime;
 
 #[derive(Debug, StructOpt)]
 #[structopt(name = "wasmer", about = "WASM execution runtime.")]
@@ -81,7 +79,7 @@ fn execute_wasm(options: &Run) -> Result<(), String> {
 
     let emscripten_globals = wasmer_emscripten::EmscriptenGlobals::new();
 
-    let mut import_object = if abi == webassembly::InstanceABI::Emscripten {
+    let import_object = if abi == webassembly::InstanceABI::Emscripten {
         wasmer_emscripten::generate_emscripten_env(&emscripten_globals)
     } else {
         wasmer_runtime::import::Imports::new()