#[derive(Debug)]
 pub enum SyncError {
     IO(io::Error),
     Prefix(StripPrefixError),
 }

 impl From<io::Error> for SyncError {
     fn from(error: io::Error) -> Self {
         SyncError::IO(error)
     }
 }

 impl From<StripPrefixError> for SyncError {
     fn from(error: StripPrefixError) -> Self {
         SyncError::Prefix(error)
     }
 }

 impl fmt::Display for SyncError {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         match *self {
             SyncError::IO(ref e) => write!(f, "An IO error occurred while syncing:   {}", e),