upstream #950

Job	Run time
xmlsoft-head-valgrind	3m 49s
html5lib-tests	1m 0s
ruby-head (ubuntu, enable)	52s
jruby-head	1m 5s
ruby-head-valgrind (enable)	4m 55s
ruby-head (ubuntu, disable)	1m 6s
ruby-head-valgrind (disable)	4m 56s
truffleruby-head (--disable-system-libraries --disable-static)	2m 57s
ruby-head (windows, enable)	3m 4s
xmlsoft-head (ubuntu)	1m 40s
ruby-head (windows, disable)	7m 52s
truffleruby-head (--disable-system-libraries --enable-static)	3m 3s
xmlsoft-head (windows)	8m 45s
ruby-head (macos, enable)	51s
truffleruby-head (--enable-system-libraries)	2m 34s
xmlsoft-head (macos)	2m 47s
ruby-head (macos, disable)	1m 0s
	52m 16s

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