This should be something very specific to the bot environment since it could not be reproduced anywhere else. http/tests/xmlhttprequest/access-control-basic-allow-preflight-cache-invalidation-by-header.html http/tests/xmlhttprequest/access-control-basic-allow-preflight-cache-invalidation-by-method.html http/tests/xmlhttprequest/access-control-basic-allow-preflight-cache-timeout.html http/tests/xmlhttprequest/access-control-basic-allow-preflight-cache.html I'm going to attach the results diffs since is not easy to check from the bot.
Created attachment 140203 [details] diff
Created attachment 140205 [details] access-control-basic-allow-preflight-cache-invalidation-by-header.html
Created attachment 140206 [details] access-control-basic-allow-preflight-cache-invalidation-by-method.html
Created attachment 140207 [details] access-control-basic-allow-preflight-cache.html
Created attachment 140208 [details] access-control-basic-allow-preflight-cache-timeout.html
Created attachment 140211 [details] Apache error log I think the problem might be related to errors when writing to /tmp
Fixed after r116108. Had to fix the ownership of some files at /tmp/