upstream #1091

Job	Run time
xmlsoft-head-valgrind	7m 6s
html5lib-tests	54s
ruby-head-valgrind (disable)	6m 55s
ruby-head (ubuntu, enable)	47s
jruby-head	1m 8s
ruby-head (ubuntu, disable)	1m 29s
truffleruby-head (--disable-system-libraries --disable-static)	2m 53s
ruby-head (windows, enable)	3m 31s
xmlsoft-head (ubuntu)	1m 39s
ruby-head (windows, disable)	3m 32s
truffleruby-head (--disable-system-libraries --enable-static)	3m 1s
xmlsoft-head (windows)	9m 49s
ruby-head (macos, enable)	30s
truffleruby-head (--enable-system-libraries)	2m 35s
xmlsoft-head (macos)	1m 32s
ruby-head (macos, disable)	1m 31s
	48m 52s

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