Capture output from shell command. Removes a warning ultimately from vcs.

run.py

@@ -38,7 +38,9 @@ def export_vcs(project_directory, install_path):
 
     # Now call vcs.
     vcs_command = "vcs export --exact-with-tags {} > {}".format(project_directory, output_file)
-    subprocess.run(vcs_command, shell=True)
+    result = subprocess.run(vcs_command, shell=True, capture_output=True)
+    if result.returncode != 0:
+        print("Failed to export software version. Return code: {}".format(result.returncode))
 
 
 if __name__ == "__main__":