2015-01-30 15:43:57.680 com.apple.WebKit.Networking.Development[57008:1c07] -[OS_dispatch_data _xref_dispose]: unrecognized selector sent to instance 0x7f899fa021d0
Created attachment 245717 [details]
Re-opened since this is blocked by bug 141117
Though this worked locally it doesn't seem to work on bots. This might be because the definition of dispatch_data_t varies based on context (objc or not etc) and so the template matching is not consistent.
Created attachment 245790 [details]
use DispatchPtr instead
Enabling the cache so bots see the change. That will land separately.