Output path comparison

Parsing nix-env's performance statistics failed.

Parse error:
Error("expected value", line: 1, column: 1)

Evaluation output:
warning: ignoring the user-specified setting 'restrict-eval', because it is a restricted setting and you are not a trusted user
warning: ignoring the user-specified setting 'show-trace', because it is a restricted setting and you are not a trusted user
{
  "cpuTime": 256.056,
  "envs": {
    "number": 116564528,
    "elements": 180959562,
    "bytes": 3312708944
  },
  "list": {
    "elements": 218967746,
    "bytes": 1751741968,
    "concats": 8916635
  },
  "values": {
    "number": 249416285,
    "bytes": 5985990840
  },
  "symbols": {
    "number": 341331,
    "bytes": 15677148
  },
  "sets": {
    "number": 31230588,
    "bytes": 8841307896,
    "elements": 357977633
  },
  "sizes": {
    "Env": 16,
    "Value": 24,
    "Bindings": 8,
    "Attr": 24
  },
  "nrOpUpdates": 15202413,
  "nrOpUpdateValuesCopied": 264447281,
  "nrThunks": 176408503,
  "nrAvoided": 165114756,
  "nrLookups": 89432119,
  "nrPrimOpCalls": 70598139,
  "nrFunctionCalls": 102128820,
  "gc": {
    "heapSize": 13824880640,
    "totalBytes": 25913053280
  }
}