Latest master is not compatible with Xcode 8

[alanzeino]

I've been testing cc45652be04529c57eee02a6988bcf8e7dc88e80 with Xcode 9, and it seems to hold up pretty well at scale on our CI. However that same build does not work with Xcode 8.3.2:

$ buck test //foo:Bar
Not using buckd because watchman isn't installed.
[-] PROCESSING BUCK FILES...FINISHED 12.0s [100%] 🐳  New buck daemon
[-] DOWNLOADING... (0.00 B/S AVG, TOTAL: 0.00 B, 0 Artifacts)
[-] BUILDING...FINISHED 7m 24.2s [100%] (5071/5071 JOBS, 4963 UPDATED, 4457 [87.9%] CACHE 
[+] TESTING...0.2s
 |=> //foo:Bar...  0.2s (running xctool-run-tests[0.2s])
xctool failed with exit code 134: dyld: Symbol not found: _OBJC_CLASS_$_FXPCSessionManager
  Referenced from: /Library/Developer/PrivateFrameworks/CoreSimulator.framework/Versions/A/CoreSimulator (which was built for Mac OS X 10.12)
  Expected in: /Applications/Xcode.app/Contents/Developer/Library/PrivateFrameworks/CoreSimulator.framework/Versions/A/Frameworks/FoundationXPC.framework/Versions/A/FoundationXPC
 in /Library/Developer/PrivateFrameworks/CoreSimulator.framework/Versions/A/CoreSimulator
RESULTS FOR //foo:Bar
FAIL    <100ms  0 Passed   0 Skipped   1 Failed   //foo:Bar
FAILURE //foo:Bar main: //foo:Bar failed with exit code 134:
xctool-run-tests
com.facebook.buck.step.StepFailedException: //foo:Bar failed with exit code 134:

We would prefer to be backwards compatible with 8, but I think the project also tries to be backwards compatible too.

[ExtremeMan]

Yeah, my bad. I will try to fix it and put a new release. Should be doable.

[alanzeino]

Thanks! Appreciate it.

I also tried 8.3.3 and saw the same issue (I thought it was just 8.3.2).

[ExtremeMan]

Should be fixed in 0.3.4 release!

[alanzeino]

Thanks Aleksey!