NOTE: Gem::Specification#has_rdoc= is deprecated with no replacement. It will be removed on or after 2018-12-01.
Gem::Specification#has_rdoc= called from /Users/kenchan/src/github.com/alexdalitz/dnsruby/dnsruby.gemspec:26.
Coverage increased (+0.7%) to 77.973% when pulling d2150fb94d231c2290a9475cdb478bf7d0be6652 on kenchan:fix-deprecation-warning into dc53f92f4a443060544d0d86cfb1c8007c3d77bd on alexdalitz:master.
Resolve the following deprecation warning.