test_connect_delay fails with test_connect_delay.cpp:80: void* server(void*): Assertion `rc != -1' failed.

The test_connect_delay test consistently fails like this:

[ tests]# ./test_connect_delay
test_connect_delay running...
Rerunning with DELAY_ATTACH_ON_CONNECT
Running DELAY_ATTACH_ON_CONNECT with disconnect
lt-test_connect_delay: test_connect_delay.cpp:80: void* server(void*): Assertion `rc != -1' failed.
Aborted (core dumped)