Test fails when build with empty maven cache

I cloned the Oak repo yesterday (28th of october) and, if I run the build command (mvn clean install), I have the following failing test:
PersistentDiskCacheTest.cleanupTest:126 Segment(s) not cleaned up in cache expected:<0> but was:<2>
 
if I run again the build it will eventually complete correctly. I tried on two different machines, one linux and one macos, and it did happen on both after cleaning the maven cache.