changeset:   0:9426b370c206
tag:         tip
user:        My Name <myname@example.com>
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     commit-1

changeset:   1:4997f15a1b24
tag:         tip
user:        foo@bar.com
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     commit-1

changeset:   2:72b8012b424e
tag:         tip
user:        foobar <foo@bar.com>
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     commit-1

changeset:   3:35ff3067bedd
tag:         tip
user:        foo@bar.com
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     commit-1

abort: no username supplied (see "hg help config")
No username found, using user@host instead
transaction abort!
rollback completed
abort: empty username!