upstream #973

Job	Run time
ruby-head-valgrind (enable)	5m 0s
xmlsoft-head (ubuntu)	1m 38s
ruby-head (ubuntu, enable)	2m 58s
ruby-head-valgrind (disable)	7m 2s
html5lib-tests	54s
xmlsoft-head (windows)	9m 24s
ruby-head (ubuntu, disable)	59s
xmlsoft-head (macos)	1m 25s
ruby-head (windows, enable)	3m 42s
jruby-head	1m 12s
truffleruby-head (--disable-system-libraries --disable-static)	5m 9s
ruby-head (windows, disable)	5m 53s
truffleruby-head (--disable-system-libraries --enable-static)	3m 11s
truffleruby-head (--enable-system-libraries)	2m 38s
ruby-head (macos, enable)	2m 44s
xmlsoft-head-valgrind	3m 39s
ruby-head (macos, disable)	42s
	58m 10s

Provide feedback