Notification: Performance of loadModel(Buildings): time 2.341/2.341, allocations: 268.2 MB / 275.3 MB, free: 6.527 MB / 218.7 MB
Notification: Performance of FrontEnd - loaded program: time 3.581e-05/3.57e-05, allocations: 4 kB / 339.2 MB, free: 6.801 MB / 282.7 MB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.345/0.3451, allocations: 61.52 MB / 400.8 MB, free: 13.74 MB / 330.7 MB
Notification: Performance of FrontEnd - scodeFlatten: time 10.05/10.4, allocations: 4.481 GB / 4.873 GB, free: 134.3 MB / 0.5261 GB
Notification: Performance of FrontEnd - mkProgramGraph: time 0.0003/10.4, allocations: 92.25 kB / 4.873 GB, free: 134.3 MB / 0.5261 GB
[/var/lib/hudson/slave/workspace/OpenModelica_TEST_LIBS/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 1.6/BoundaryConditions/SolarIrradiation/DiffusePerez.mo:58:3-61:27:writable] Error: Failed to instantiate equation 
connect(weaBus.sol.zen, skyCle.zen);.
Error: Error occurred while flattening model Buildings.BoundaryConditions.SolarIrradiation.Examples.DiffusePerez
Notification: Performance of FrontEnd: time 0.1551/10.55, allocations: 39.94 MB / 4.912 GB, free: 126.1 MB / 0.5261 GB