to try to suppress a failure on Solaris. This is the same as
19504d115d20210504T070007Z.fail.html.gz
```
1) Error:
IMAPTest#test_idle_done_not_during_idle:
Errno::EINVAL: Invalid argument - connect(2) for [::1]:33839
/export/home/chkbuild/chkbuild-sunc/tmp/build/20210504T070007Z/ruby/.ext/common/socket.rb:1214:in `__connect_nonblock'
/export/home/chkbuild/chkbuild-sunc/tmp/build/20210504T070007Z/ruby/.ext/common/socket.rb:1214:in `connect_nonblock'
/export/home/chkbuild/chkbuild-sunc/tmp/build/20210504T070007Z/ruby/.ext/common/socket.rb:56:in `connect_internal'
/export/home/chkbuild/chkbuild-sunc/tmp/build/20210504T070007Z/ruby/.ext/common/socket.rb:137:in `connect'
/export/home/chkbuild/chkbuild-sunc/tmp/build/20210504T070007Z/ruby/.ext/common/socket.rb:642:in `block in tcp'
/export/home/chkbuild/chkbuild-sunc/tmp/build/20210504T070007Z/ruby/.ext/common/socket.rb:227:in `each'
/export/home/chkbuild/chkbuild-sunc/tmp/build/20210504T070007Z/ruby/.ext/common/socket.rb:227:in `foreach'
/export/home/chkbuild/chkbuild-sunc/tmp/build/20210504T070007Z/ruby/.ext/common/socket.rb:632:in `tcp'
/export/home/chkbuild/chkbuild-sunc/tmp/build/20210504T070007Z/ruby/lib/net/imap.rb:1223:in `tcp_socket'
/export/home/chkbuild/chkbuild-sunc/tmp/build/20210504T070007Z/ruby/lib/net/imap.rb:1180:in `initialize'
/export/home/chkbuild/chkbuild-sunc/tmp/build/20210504T070007Z/ruby/test/net/imap/test_imap.rb:289:in `new'
/export/home/chkbuild/chkbuild-sunc/tmp/build/20210504T070007Z/ruby/test/net/imap/test_imap.rb:289:in `test_idle_done_not_during_idle'
```