https://luci-logdog.appspot.com/logs/chromeos/buildbucket/cr-buildbucket.appspot.com/8929950172316720064/+/steps/UnitTest/0/stdout

chromeos-init-0.0.25-r3699: Suggestion: Use Linux kernel >= 3.18 for improved stability of the metadata and journal checksum features.
chromeos-init-0.0.25-r3699: Warning: could not erase sector 2: Input/output error
chromeos-init-0.0.25-r3699: Creating filesystem with 2048 1k blocks and 256 inodes
chromeos-init-0.0.25-r3699: 
chromeos-init-0.0.25-r3699: Allocating group tables: 0/1   done                            
chromeos-init-0.0.25-r3699: Warning: could not read block 0: Input/output error
chromeos-init-0.0.25-r3699: Warning: could not erase sector 0: Input/output error
chromeos-init-0.0.25-r3699: Writing inode tables: 0/1   done                            
chromeos-init-0.0.25-r3699: ext2fs_update_bb_inode: Input/output error while setting bad block inode
chromeos-init-0.0.25-r3699: ../../../../../../../tmp/portage/chromeos-base/chromeos-init-0.0.25-r3699/work/chromeos-init-0.0.25/init/tests/clobber_state_test.cc:197: Failure
chromeos-init-0.0.25-r3699: Value of: MakeFilesystem("ext4", 5)
chromeos-init-0.0.25-r3699:   Actual: false
chromeos-init-0.0.25-r3699: Expected: true
chromeos-init-0.0.25-r3699: terminating with uncaught exception of type testing::internal::GoogleTestFailureException: ../../../../../../../tmp/portage/chromeos-base/chromeos-init-0.0.25-r3699/work/chromeos-init-0.0.25/init/tests/clobber_state_test.cc:197: Failure
chromeos-init-0.0.25-r3699: Value of: MakeFilesystem("ext4", 5)
chromeos-init-0.0.25-r3699:   Actual: false
chromeos-init-0.0.25-r3699: Expected: true
chromeos-init-0.0.25-r3699: Error: /var/cache/portage/chromeos-base/chromeos-init/out/Default/clobber_state_test: failed with signal SIGIOT|SIGABRT(6)