Running test/format with log-based incremental backup hit a failure in the test program.
[1584375288:350843][28711:0x7f87617fa700], t: __posix_open_file, 667: RUNDIR/BACKUP/WiredTiger.iback up.copy: handle-open: open: No such file or directory t: FAILED: copy_file/304: __wt_copy_and_sync(session, name, first): No such file or directory
This is a bug in the test program, maybe in setting up the pathnames.