calculatrix (prn "dbg" line result output)

gistfile1.txt

"dbg" "  => 29" " 29" #<StringWriter   => 29
>
"dbg" "  => Invalid operand: foo" " Invalid operand: foo" #<StringWriter   => Invalid operand: foo
>
"dbg" "  => Invalid command: foo" " Invalid command: foo" #<StringWriter   => Invalid command: foo
>
"dbg" "  => 2" " 2" #<StringWriter   => 2
  => 4
>
FAIL at (test_calculatrix.clj:54)
    Expected: "4"
      Actual: "2"
"dbg" "  => 3/2" " 3/2" #<StringWriter   => 3/2
>
"dbg" "  => 8" " 8" #<StringWriter   => 8
>
"dbg" "  => {a 2}" " {a 2}" #<StringWriter   => {a 2}
  => 6
>
FAIL at (test_calculatrix.clj:61)
    Expected: "6"
      Actual: "{a 2}"
"dbg" "  => {a 42}" " {a 42}" #<StringWriter   => {a 42}
  => {b 42, a 42}
  => 84
>
FAIL at (test_calculatrix.clj:62)
    Expected: "84"
      Actual: "{a 42}"
"dbg" "  => Wrong number of arguments to +: expects 2, you gave 3." " Wrong number of arguments to +: expects 2, you gave 3." #<StringWriter   => Wrong number of arguments to +: expects 2, you gave 3.
>
"dbg" "  => 4" " 4" #<StringWriter   => 4
>
"dbg" "  => 0" " 0" #<StringWriter   => 0
>
FAILURE: 3 facts were not confirmed. (But 15 were.)