[flaky] tests/vibe.core.net.1429

[wilzbach]

To force a rebuild of up-to-date targets, run again with --force.
Running ./tests 
Exception received: UDP receive timeout.
core.exception.AssertError@source/app.d(24): Timeout occurred too late (198 ms, 169 μs, and 2 hnsecs).
----------------
??:? _d_assert_msg [0x63574a]
source/app.d:24 void app._sharedStaticCtor1().__lambda2() [0x575e52]
../../core/vibe/core/core.d:629 void vibe.core.core.makeTaskFuncInfo!(void delegate()).makeTaskFuncInfo(ref void delegate()).callDelegate(vibe.core.core.TaskFuncInfo*) [0x5821af]
../../core/vibe/core/core.d:1241 void vibe.core.core.CoreTask.run() [0x5869fe]
??:? void core.thread.Fiber.run() [0x66c5ef]
??:? fiber_entryPoint [0x66c342]
??:? [0xffffffff]

Seen here: https://ci.dlang.io/blue/organizations/jenkins/dlang-org%2Fdmd/detail/PR-7762/11/pipeline

Occurs with vibe-core too: vibe-d/vibe-core#55