Exception when running buck build

[JakeSc]

$ buck build src/ImportObjC
[-] PROCESSING BUCK FILES...FINISHED 0.0s 🏖  Watchman reported no changes
[-] DOWNLOADING... (0.00 B/S AVG, TOTAL: 0.00 B, 0 Artifacts)
[-] BUILDING...FINISHED 0.0s
[2017-08-20 13:00:48.450][error][command:null][tid:313][com.facebook.buck.cli.Main] Uncaught exception at top level
java.lang.StackOverflowError
	at java.util.TimSort.countRunAndMakeAscending(TimSort.java:355)
	at java.util.TimSort.sort(TimSort.java:220)
	at java.util.Arrays.sort(Arrays.java:1512)
	at com.google.common.collect.ImmutableSortedSet.construct(ImmutableSortedSet.java:369)
	at com.google.common.collect.ImmutableSortedSet.copyOf(ImmutableSortedSet.java:298)
	at com.google.common.collect.ImmutableSortedSet.copyOf(ImmutableSortedSet.java:321)
	at com.google.common.collect.ImmutableSortedSet.copyOf(ImmutableSortedSet.java:235)
	at com.facebook.buck.rules.TargetNodeFactory.create(TargetNodeFactory.java:124)
	at com.facebook.buck.rules.TargetNodeFactory.copyNodeWithFlavors(TargetNodeFactory.java:188)
	at com.facebook.buck.rules.TargetNode.copyWithFlavors(TargetNode.java:202)
	at com.facebook.buck.rules.TargetGraph.getInternal(TargetGraph.java:68)
	at com.facebook.buck.rules.TargetGraph.get(TargetGraph.java:78)
	at com.facebook.buck.rules.BuildRuleResolver.requireRule(BuildRuleResolver.java:132)
	at com.facebook.buck.rules.BuildRuleResolver.requireAllRules(BuildRuleResolver.java:158)
	at com.facebook.buck.rules.DefaultTargetNodeToBuildRuleTransformer.transform(DefaultTargetNodeToBuildRuleTransformer.java:39)
	at com.facebook.buck.rules.BuildRuleResolver.requireRule(BuildRuleResolver.java:133)

The stack trace is hundreds of lines long, and consists of the last three lines repeated.

[JakeSc]

I don't see this anymore after upgrading Buck from 2017.05.09.01 to 2017.05.31.01. However, I do see a compile error:

#import <ImportObjC/A.h>
        ^
<unknown>:0: error: failed to import bridging header 'src/ImportObjC/bridging-header.h'

I'll dig in and perhaps file another issue. Closing this one.

[zayhero-zz]

@JakeSc
The requireRule dead loop is caused by a bug in watchman, you can turn it off or specify NO_BUCKD=True in your buck build command to get around it.

For the import issue is caused, as what we put on the this repo README, the mixed languages build does NOT work with buck master repo.
It only work with our fork https://github.com/airbnb/buck/tree/airbnb_ios_current.