It seems that the Xtreams build has been failing since june 30th for 4.0 and not 3.0:
https://ci.inria.fr/pharo-contribution/job/Xtreams/ From the changes to 4.0 around that period I can't immediately see something obvious: https://github.com/pharo-project/pharo-core/commits/4.0?page=4 I just tried loading Xtreams in on my machine and all tests succeed. All errors on Jenkins seem to be related to primitives not being found in libCrypto: Error Message External module not found Stacktrace XTLibCryptoHash(Object)>>error: XTLibCryptoHash(Object)>>externalCallFailed XTLibCryptoHash>>EVP_MD_CTX_init: XTLibCryptoHash>>initialize XTHash class>>new XTHashTest>>testMD5 XTHashTest(TestCase)>>performTest So, is it possible there was a change in the VM ? The Xtreams source code itself has not been changed for months. Sven
