This Tomcat version does not receive any love anymore from the Tomcat devs. Deprecate and remove the port after some time from the collection.
Over to maintainer
A commit references this bug:
Date: Mon Jul 1 08:21:57 UTC 2019
New revision: 505555
www/tomcat6: this port is end-of-life since 2017,
schedule it for removal next month.
Submitted by: Michael Osipov
Approved by: maintainer timeout (ale, 11 months)
Scheduled for removal this August, thanks for the report.