"0xbadbeef".parse_int()

# output:
stdin:1:1
  ╷
1 │ "0xbadbeef".parse_int()
  ╵ ^~~~~~~~~~~
Error: Failed to parse as integer: "0xbadbeef"

stdin:1:22
  ╷
1 │ "0xbadbeef".parse_int()
  ╵                      ^
In call to method 'String.parse_int'.