id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
19173	"svn build with ant on Ubuntu 18.04/20.04 crashes with ""Could not initialize class org.openstreetmap.josm.data.cache.JCSCacheManager"" at runtime"	mvogt	team	"Building a working josm in a Ubuntu 18.04 environment from svn recently stopped working for me. I did svn co https://josm.openstreetmap.de/svn/trunk/ and ran ""ant"" in there.

I did build r15937 (and a bunch of version before that) and worked normally. When building r16239 the generated jar file will start but trying to download anything will fail with a crash:

java.lang.NoClassDefFoundError: Could not initialize class org.openstreetmap.josm.data.cache.JCSCacheManager

(full log at https://paste.ubuntu.com/p/f2Ht8RpZFb/)

I tried this on two different machines (20.04 and 18.04) with the same result. With jdk 8/11/14. I also tried to checkout r15937 to bisect but this checkout fails with: 
""""""
svn: warning: W170000: URL 'https://github.com/apache/commons-jcs/trunk/commons-jcs-core/src/main/java/org/apache/commons/jcs' at revision 3137 doesn't exist
""""""

Any hints what I can do to get to a working build would be greatly appreciated. Do I need to update anything on my side how I build josm?

Thanks,
 Michael"	defect	new	minor		Core