Corrected test & resolved warnings

src/storage/dlt_storage_reader.rs

@@ -1,9 +1,10 @@
 use std::io::{BufRead, ErrorKind, Read};
+#[cfg(not(test))]
 use std::vec::Vec;
 
 use crate::error::{DltMessageLengthTooSmallError, ReadError, UnsupportedDltVersionError};
-use crate::*;
 use crate::storage::StorageHeader;
+use crate::*;
 
 use super::StorageSlice;
 
@@ -331,7 +332,6 @@ impl<R: Read + BufRead> DltStorageReader<R> {
 #[cfg(feature = "std")]
 mod dlt_storage_reader_tests {
     use super::*;
-    use crate::DltHeader;
     use std::format;
     use std::io::{BufReader, Cursor};
 
@@ -765,10 +765,7 @@ mod dlt_storage_reader_tests {
                 v.extend_from_slice(&[]); // missing one byte
             }
             let mut reader = DltStorageReader::new(BufReader::new(Cursor::new(&v[..])));
-            assert_matches!(
-                reader.next_packet(),
-                Some(Err(ReadError::DltMessageLengthTooSmall(_)))
-            );
+            assert!(reader.next_packet().is_none());
             assert!(reader.next_packet().is_none());
         }
     }