id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	launchpad_bug
3623	A new Twisted release can turn CI red	exarkun	GitHub <noreply@…>	"The CI build environment allows the newest Twisted release in.  However, in the case of 21.2.0, this release is incompatible with our typechecks job.

Pin Twisted within a known-working range for the purposes of CI.
"	defect	closed	normal	undecided	unknown	n/a	fixed