[Bugfix:Plagiarism] Clean up temp files on failure (#52)

* Clean up files on failure

* Don't try to delete file which has already been deleted

Co-authored-by: sbelsk <[email protected]>

Author: williamjallen

bin/process_all.sh

@@ -71,9 +71,9 @@ mkdir -p "${basepath}/users"
 
     ############################################################################
     # Run Lichen
-    ./tokenize_all.py    "$tmp_location" || exit 1
-    ./hash_all.py        "$tmp_location" || exit 1
-    ./compare_hashes.out "$tmp_location" || exit 1
+    ./tokenize_all.py    "$tmp_location" || { rm -rf $tmp_location; exit 1; }
+    ./hash_all.py        "$tmp_location" || { rm -rf $tmp_location; exit 1; }
+    ./compare_hashes.out "$tmp_location" || { rm -rf $tmp_location; exit 1; }
 
     ############################################################################
     # Zip the results back up and send them back to the course's lichen directory