https://cros-goldeneye.corp.google.com/chromeos/healthmonitoring/buildDetails?buildbucketId=8924272598497994672

provision              FAIL: Saw file system error: [    4.301981] EXT4-fs error (device sda1): __ext4_get_inode_loc:3769: inode #155554: block 525930: comm find: unable to read itable block, completed successfully
  platform_Powerwash   [ PASSED ]

Probably a one-off.  Filing in case it happens again.