test: Pin docutils because old Sphinx cannot work with docutils-0.16

tk0miya · tk0miya · commit bca227245f9a · 2020-01-26T13:11:58.000+09:00
diff --git a/tox.ini b/tox.ini
@@ -29,16 +29,19 @@ deps=
 deps=
     {[testenv]deps}
     Sphinx <= 1.0.9999
+    docutils < 0.16
 
 [testenv:sphinx11]
 deps=
     {[testenv]deps}
     Sphinx <= 1.1.9999
+    docutils < 0.16
 
 [testenv:sphinx12]
 deps=
     {[testenv]deps}
     Sphinx <= 1.2.9999
+    docutils < 0.16
 
 [testenv:sphinx13]
 deps=
