https://build.chromium.org/p/chromium.fyi/builders/Fuchsia/builds/9817

[ RUN      ] LevelDBTransactionTest.Commit
[3:1751233509:1002/113352.891534:95835134:ERROR:leveldb_database.cc(319)] Failed to open LevelDB database from /tmp/.org.chromium.Chromium.mfDioH,IO error: /tmp/.org.chromium.Chromium.mfDioH: Could not open/read directory (ChromeMethodBFE: 20::GetChildren::1)
../../content/browser/indexed_db/leveldb/leveldb_transaction_unittest.cc:49: Failure
Value of: s.ok()
  Actual: false
Expected: true
[  FAILED  ] LevelDBTransactionTest.Commit (448 ms)

Sort of looks like actual IO failure, but not sure. Only seen it once so far.