In Bitcoin Core 0.11.1, this test script fails with JSONRPC error: 66: insufficient priority as shown below. The test passed in 0.11.0.
Running 2nd level testscript pruning.py...
File "/builddir/build/BUILD/bitcoin-0.11.1/qa/rpc-tests/test_framework/test_framework.py", line 118, in main
self.run_test()
File "/builddir/build/BUILD/bitcoin-0.11.1/qa/rpc-tests/pruning.py", line 261, in run_test
self.create_big_chain()
File "/builddir/build/BUILD/bitcoin-0.11.1/qa/rpc-tests/pruning.py", line 76, in create_big_chain
self.mine_full_block(self.nodes[0], self.address[0])
File "/builddir/build/BUILD/bitcoin-0.11.1/qa/rpc-tests/pruning.py", line 253, in mine_full_block
txid = node.sendrawtransaction(signresult["hex"], True)
File "/builddir/build/BUILD/bitcoin-0.11.1/qa/rpc-tests/test_framework/authproxy.py", line 126, in __call__
raise JSONRPCException(response['error'])
Initializing test directory /tmp/testM1XDl2
Warning! This test requires 4GB of disk space and takes over 30 mins (up to 2 hours)
Mining a big blockchain of 995 blocks
JSONRPC error: 66: insufficient priority
Stopping nodes
Cleaning up
Failed