cfbot found another source of nondeterminism in the regression tests, due to the smaller shared_buffers used in this TAP test:
https://cirrus-ci.com/task/4611828654276608 https://api.cirrus-ci.com/v1/artifact/task/4611828654276608/log/src/test/recovery/tmp_check/regression.diffs Turned out that we had already diagnosed that once before, when tiny build farm animal chipmunk reported the same, but we didn't commit a fix: https://www.postgresql.org/message-id/flat/CA%2BhUKGLTK6ZuEkpeJ05-MEmvmgZveCh%2B_w013m7%2ByKWFSmRcDA%40mail.gmail.com
