Maybe something to do the configuration of the machine, so that TCP/UDP socket networking if failing?  Two things to try:

- give the "python" process a SIGINT signal and you should get a traceback showing where it is hanging.  Or you could use "gdb" and attach to the process (assuming you know how to use gdb).

- configure without PGO (i.e. don't specify "--enable-optimizations" to conifgure).  That will result in a slightly slower build but the build will not require running of the tests.