== sanity-zero test 3a: truncate to a ZEROSTART boundary with an empty prev component ========================================================== 14:30:33 (1790706633)
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.14373 s, 7.3 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.177974 s, 5.9 MB/s