Built without problems on two systems:
10.14.6 (2017 MBP, 4-core Core i7): Failures on two tests:
sage -t --long --warn-long 116.0 --random-seed=219676370060626032829080197357544
613213 src/sage/interfaces/expect.py # 2 doctests failed
sage -t --long --warn-long 116.0 --random-seed=219676370060626032829080197357544
613213 src/sage/symbolic/integration/external.py # 1 doctest failed
The first failure (pexpect) is intermittent. The second is persistent.
Log file attached below.
10.15.7 (2019 MBP, 8-core Core i9): All tests passed!