Lies to students about "staff being informed" if nuisance failure

[inducer]

Code questions have some ad-hoc logic about classifying container launch issues as "nuisance failures":

relate/course/page/code.py

Lines 370 to 398 in 35cd621

	def is_nuisance_failure(result):
	if result["result"] != "uncaught_error":
	return False
	if "traceback" in result:
	if "BadStatusLine" in result["traceback"]:
	# Occasionally, we fail to send a POST to the container, even after
	# the inital ping GET succeeded, for (for now) mysterious reasons.
	# Just try again.
	return True
	if "bind: address already in use" in result["traceback"]:
	# https://github.com/docker/docker/issues/8714
	return True
	if ("requests.packages.urllib3.exceptions.NewConnectionError"
	in result["traceback"]):
	return True
	if "http.client.RemoteDisconnected" in result["traceback"]:
	return True
	if "[Errno 113] No route to host" in result["traceback"]:
	return True
	return False

If every container launch retry fails because of a nuisance issue, the current error message claims that "staff is being informed", but that is not true.