fix prerelease test
@@ -113,7 +113,7 @@ fn upgrade_prerelease_already_prereleased() {
execute_command(&["add", "docopt", "--vers", "0.8-alpha"], &manifest);
// Now, upgrade `docopt` to the latest version
- execute_command(&["upgrade", "--allow-prerelease"], &manifest);
+ execute_command(&["upgrade"], &manifest);
// Verify that `docopt` has been updated successfully.
assert_eq!(
