stumped by lpeg

logexamples.txt

info:  type=query, sql=update `Transactions` set `confirmedAt` = ? where `id` = ?
error: unhandled error type name=NetworkError, stack=NetworkError: noNetwork

parser.lua

local l = require 'lpeg'
l.locale(l)

local space = l.space^0
local level = l.Ct(l.Cg(l.C(l.alpha^1), "level")) 

local name = l.C(l.alpha^1) * space
local sep = l.S(",") * space
local pair = lpeg.Cg(name * ":" * space * name) * sep^-1

grammar = lpeg.Cf(level * l.Ct(l.Cg(l.C(l.P":"), "colon")) * space, rawset)

proposedparsing.json

[
{"level": "info",
"type": "query",
"sql": "update `Transactions` set `confirmedAt` = ? where `id` = ?"
},
{
"level": "error",
"unhandled error type name": "NetworkError",
"stack": "NetworkError: noNetwork"
}]