Is this a BUG REPORT or FEATURE REQUEST? (choose one):
not bug

Tendermint version (use tendermint version or git rev-parse --verify HEAD if installed from source):
0.20.0

ABCI app (name for built-in, URL for self-written if it's publicly available):

Environment:

• OS (e.g. from /etc/os-release):
  CentOS Linux release 7.4.1708 (Core)
• Install tools:
  [root@mach2 ~]# docker version
  Client:
  Version: 18.02.0-ce
  API version: 1.36
  Go version: go1.9.3
  Git commit: fc4de44
  Built: Wed Feb 7 21:14:12 2018
  OS/Arch: linux/amd64
  Experimental: false
  Orchestrator: swarm

Server:
Engine:
Version: 18.02.0-ce
API version: 1.36 (minimum version 1.12)
Go version: go1.9.3
Git commit: fc4de44
Built: Wed Feb 7 21:17:42 2018
OS/Arch: linux/amd64
Experimental: false

• Others:

What happened:
Failed to create node

What you expected to happen:
the node create and start success.

How to reproduce it (as minimally and precisely as possible):

Logs (you can paste a part showing an error or attach the whole file):
ERROR: Failed to create node: Error{The genesis file cannot contain validators with no voting power: {PubKeyEd25519{F2A15DE82B45E8065657C11A5B5D4C7D4B58AE2F871C6260371EE1948886C3A0} 0 mach1}}
/dump_consensus_state output for consensus bugs

Anything else do we need to know:
When I delete the extra character of ":", the node create and start success.