fix function call signatures

api/struct.go

@@ -56,7 +56,7 @@ func (c *Struct) MpoolPending(ctx context.Context, ts *chain.TipSet) ([]*chain.S
 }
 
 func (c *Struct) MpoolPush(ctx context.Context, smsg *chain.SignedMessage) error {
-	return c.MpoolPush(ctx, smsg)
+	return c.Internal.MpoolPush(ctx, smsg)
 }
 
 func (c *Struct) MinerStart(ctx context.Context, addr address.Address) error {

cli/createminer.go

@@ -112,7 +112,7 @@ var createMinerCmd = &cli.Command{
 		}
 
 		fmt.Printf("miner created in block %s\n", mwait.InBlock)
-		fmt.Println("new miner address: %s\n", maddr)
+		fmt.Printf("new miner address: %s\n", maddr)
 
 		return nil
 	},