bug#30524: java-jeromq: non-deterministic test failures

[Ricardo Wurmus]

Sometimes the check phase of java-jeromq fails:

--8<---------------cut here---------------start------------->8---
…
    [junit] Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 
0.427 sec
    [junit] Running zmq.InprocUnbindTest
    [junit] Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 
0.17 sec
    [junit] Running zmq.OptionsTest
    [junit] Tests run: 10, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 
0.193 sec
    [junit] Running zmq.io.MetadataTest
    [junit] Sending ZAP reply
    [junit] Tests run: 2, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 
0.527 sec
    [junit] Running zmq.io.V0ProtocolTest
    [junit] Tests run: 2, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 
1.482 sec
    [junit] Running zmq.io.V1ProtocolTest
    [junit] Tests run: 2, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 
3.014 sec

BUILD FAILED
/tmp/guix-build-java-jeromq-0.4.3.drv-0/source/build.xml:1: Test 
zmq.io.V1ProtocolTest failed
--8<---------------cut here---------------end--------------->8---


-- 
Ricardo