Looks like you hit https://github.com/zopefoundation/ZODB3/issues/1
Pinning ZODB3 to 3.10.5 in buildout.cfg sorted this issue for us (in a different project).
Looks like you hit https:/ /github. com/zopefoundat ion/ZODB3/ issues/ 1
Pinning ZODB3 to 3.10.5 in buildout.cfg sorted this issue for us (in a different project).