Remove system specific detail from error message

Author: webmaster128

packages/vm/src/cache.rs

@@ -351,12 +351,12 @@ fn save_wasm_to_disk(dir: impl Into<PathBuf>, wasm: &[u8]) -> VmResult<Checksum>
 fn load_wasm_from_disk(dir: impl Into<PathBuf>, checksum: &Checksum) -> VmResult<Vec<u8>> {
     // this requires the directory and file to exist
     let path = dir.into().join(checksum.to_hex());
-    let mut file = File::open(path)
-        .map_err(|e| VmError::cache_err(format!("Error opening Wasm file for reading: {}", e)))?;
+    let mut file =
+        File::open(path).map_err(|_e| VmError::cache_err("Error opening Wasm file for reading"))?;
 
     let mut wasm = Vec::<u8>::new();
     file.read_to_end(&mut wasm)
-        .map_err(|e| VmError::cache_err(format!("Error reading Wasm file: {}", e)))?;
+        .map_err(|_e| VmError::cache_err("Error reading Wasm file"))?;
     Ok(wasm)
 }
 
@@ -518,8 +518,7 @@ mod tests {
 
         match cache.load_wasm(&checksum).unwrap_err() {
             VmError::CacheErr { msg, .. } => {
-                assert!(msg
-                    .starts_with("Error opening Wasm file for reading: No such file or directory"))
+                assert_eq!(msg, "Error opening Wasm file for reading")
             }
             e => panic!("Unexpected error: {:?}", e),
         }