Hi there, I don't know whether anyone was aware or it's been discussed here earlier.
I just rejoined this milis after around 1 year ago. I just checkout the tomcat trunk (rev 1556266) and tried to follow the build instruction, running the ant build. The build breaks, and later I found out that the content of the build.properties.default (which I copied to build.properties and modified locally) had a stale version of commons-pool2 version (2.1) which is no longer exists in the repository. Somewhere in line 169, we need to update the version from 2.1 to 2.2. commons-pool.version=2.2-20140107.135000-1 171 commons-pool.home=${base.path}/commons-pool2-2.2-SNAPSHOT-src 172 commons-pool-src.loc.1= https://repository.apache.org/content/repositories/snapshots/org/apache/commons/commons-pool2/2.2-SNAPSHOT/commons-pool2-${c ommons-pool.version}-src.tar.gz 173 commons-pool-src.loc.2= https://repository.apache.org/content/repositories/snapshots/org/apache/commons/commons-pool2/2.2-SNAPSHOT/commons-pool2-${c ommons-pool.version}-src.tar.gz After modifying those 3 lines, it works. Regards, Daniel Baktiar