All Xcode Bots Tests Pass, but why does it fail integration with “No tests found”?

问题

I run xcode bots with 188 tests and they all pass, but it shows a failure on the bot web page:

You can also see that running the bots again pass. The failures happen intermittently but it is not rare.

The Summary tab shows that the failing integration has no results:

Also, all the tests pass, seen here:

I did find this in the build log:

Mar 13 13:04:11 testowlmacmini.local xcsbuildd[97650] <Error>: [XCSBuildBundle.m:787 756b6310 +0ms] Got an error from the post timeseries data operation: Error Domain=XCSBuildServiceDomain Code=-1 "Error posting build timeseries data for e9859e8a-ec4b-43ae-be30-5fe6ef8dce13 (Remote service call failed: Response{0ms succeeded=0 responseStatus=failed response=Error Domain=NSURLErrorDomain Code=-1001 "The request timed out." UserInfo=0x7fefa40588f0 {NSUnderlyingError=0x7fefa2f4b7c0 "The request timed out.", NSErrorFailingURLStringKey=https://localhost:4443/svc, NSErrorFailingURLKey=https://localhost:4443/svc, NSLocalizedDescription=The request timed out.}})" UserInfo=0x7fefa4443580 {NSLocalizedDescription=Error posting build timeseries data for e9859e8a-ec4b-43ae-be30-5fe6ef8dce13 (Remote service call failed: Response{0ms succeeded=0 responseStatus=failed response=Error Domain=NSURLErrorDomain Code=-1001 "The request timed out." UserInfo=0x7fefa40588f0 {NSUnderlyingError=0x7fefa2f4b7c0 "The request timed out.", NSErrorFailingURLStringKey=https://localhost:4443/svc, NSErrorFailingURLKey=https://localhost:4443/svc, NSLocalizedDescription=The request timed out.}})}
    Mar 13 13:04:11 testowlmacmini.local xcsbuildd[97650] <Debug>: [XCSOperation.m:28 756b6310 +0ms] Cancelling operation: XCSPostTimeseriesDataOperation
    Mar 13 13:04:11 testowlmacmini.local xcsbuildd[97650] <Error>: [XCSBuildBundle.m:559 756b6310 +0ms] Got an error posting timeseries data: Error Domain=XCSBuildServiceDomain Code=-1 "Error posting build timeseries data for e9859e8a-ec4b-43ae-be30-5fe6ef8dce13 (Remote service call failed: Response{0ms succeeded=0 responseStatus=failed response=Error Domain=NSURLErrorDomain Code=-1001 "The request timed out." UserInfo=0x7fefa40588f0 {NSUnderlyingError=0x7fefa2f4b7c0 "The request timed out.", NSErrorFailingURLStringKey=https://localhost:4443/svc, NSErrorFailingURLKey=https://localhost:4443/svc, NSLocalizedDescription=The request timed out.}})" UserInfo=0x7fefa4443580 {NSLocalizedDescription=Error posting build timeseries data for e9859e8a-ec4b-43ae-be30-5fe6ef8dce13 (Remote service call failed: Response{0ms succeeded=0 responseStatus=failed response=Error Domain=NSURLErrorDomain Code=-1001 "The request timed out." UserInfo=0x7fefa40588f0 {NSUnderlyingError=0x7fefa2f4b7c0 "The request timed out.", NSErrorFailingURLStringKey=https://localhost:4443/svc, NSErrorFailingURLKey=https://localhost:4443/svc, NSLocalizedDescription=The request timed out.}})}

Xcode 5.1

What went wrong?

来源：https://stackoverflow.com/questions/22462329/all-xcode-bots-tests-pass-but-why-does-it-fail-integration-with-no-tests-found