Commits on Nov 30, 2018

1. Deal with EINTR in net timeout tests …

   We've seen sporadic QE failures in the timeout tests on this assertion:
   
       assert!(kind == ErrorKind::WouldBlock || kind == ErrorKind::TimedOut);
   
   So there's an error, but not either of the expected kinds.  Adding a
   format to show the kind revealed `ErrorKind::Interrupted` (`EINTR`).
   
   For the cases that were using `read`, we can just use `read_exact` to
   keep trying after interruption.  For those using `recv_from`, we have to
   manually loop until we get a non-interrupted result.

   

   cuviper committed Nov 30, 2018
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