diff --git a/Makefile b/Makefile
index 0c9a0692d..a51d66789 100644
--- a/Makefile
+++ b/Makefile
@@ -48,7 +48,7 @@ test-emscripten:
 release:
 	# If you are in OS-X, you will need mingw-w64 for cross compiling to windows
 	# brew install mingw-w64
-	cargo build --release
+	cargo +nightly build --release
 
 debug-release:
 	cargo build --release --features debug
diff --git a/lib/dynasm-backend/src/lib.rs b/lib/dynasm-backend/src/lib.rs
index 7e8e17cb8..b6b035404 100644
--- a/lib/dynasm-backend/src/lib.rs
+++ b/lib/dynasm-backend/src/lib.rs
@@ -38,7 +38,8 @@ impl CacheGen for Placeholder {
         &self,
         module: &ModuleInner,
     ) -> Result<(Box<ModuleInfo>, Box<[u8]>, Memory), CacheError> {
-        unimplemented!()
+        // unimplemented!()
+        Err(CacheError::Unknown("the dynasm backend doesn't support caching yet".to_string()))
     }
 }
 
@@ -73,7 +74,8 @@ impl Compiler for SinglePassCompiler {
     }
 
     unsafe fn from_cache(&self, _artifact: Artifact, _: Token) -> Result<ModuleInner, CacheError> {
-        unimplemented!("the dynasm backend doesn't support caching yet")
+        Err(CacheError::Unknown("the dynasm backend doesn't support caching yet".to_string()))
+        // unimplemented!("the dynasm backend doesn't support caching yet")
     }
 }
 
diff --git a/src/bin/wasmer.rs b/src/bin/wasmer.rs
index e36e99cb6..ec051105e 100644
--- a/src/bin/wasmer.rs
+++ b/src/bin/wasmer.rs
@@ -128,8 +128,9 @@ fn execute_wasm(options: &Run) -> Result<(), String> {
                 let module = webassembly::compile(&wasm_binary[..])
                     .map_err(|e| format!("Can't compile module: {:?}", e))?;
 
-                // We save the module into a cache file
-                cache.store(hash, module.clone()).unwrap();
+                // We try to save the module into a cache file
+                cache.store(hash, module.clone()).unwrap_or_default();
+
                 module
             }
         };