upstream #1059

Job	Run time
html5lib-tests	49s
jruby-head	1m 3s
ruby-head (ubuntu, enable)	46s
ruby-head-valgrind (disable)	5m 20s
ruby-head (ubuntu, disable)	47s
ruby-head (windows, enable)	3m 4s
truffleruby-head (--disable-system-libraries --disable-static)	3m 5s
xmlsoft-head (ubuntu)	1m 40s
ruby-head (windows, disable)	2m 56s
truffleruby-head (--disable-system-libraries --enable-static)	3m 3s
xmlsoft-head (windows)	9m 51s
xmlsoft-head-valgrind	6m 27s
ruby-head (macos, enable)	33s
truffleruby-head (--enable-system-libraries)	1m 22s
xmlsoft-head (macos)	1m 33s
ruby-head (macos, disable)	1m 20s
	43m 39s

Provide feedback