ditsing/ruaft @ 2f41f782bae357cfb646ce7e4b57d6807cad56ed

Jing Yang 2f41f782ba Add the unreliable test.		%!s(int64=5) %!d(string=hai) anos
..
persister	fa74454870 Implement persister.	%!s(int64=5) %!d(string=hai) anos
mod.rs	2f41f782ba Add the unreliable test.	%!s(int64=5) %!d(string=hai) anos