text: Title: invalid reports when used with `-rA`, repeats 3 times with instafail
  Body: pytest-sugar reports strange things when used with `-rA`
  
  #### Command used to run pytest
  ````pytest test_example.py````
  
  #### Test file
  ````python
  def test_example():
      print(1)
      pass
  ````
  
  #### Output
  ````
  Test session starts (platform: linux, Python 3.8.5, pytest 6.2.2, pytest-sugar 0.9.4)
  rootdir: /home/stas/hf/transformers-stas
  plugins: forked-1.3.0, xdist-2.2.0, sugar-0.9.4, instafail-0.4.2
  collecting ...
   test_example.py ✓                                                                                                                    100% ██████████
  
  Results (0.02s):
         1 passed
  ````
  
  ### with -rA
  
  ```
  $ pytest -rA test_example.py
  Test session starts (platform: linux, Python 3.8.5, pytest 6.2.2, pytest-sugar 0.9.4)
  rootdir: /home/stas/hf/transformers-stas
  plugins: forked-1.3.0, xdist-2.2.0, sugar-0.9.4, instafail-0.4.2
  collecting ...
   test_example.py ✓                                                                                                                    100% ██████████
  ====================================================================== PASSES =======================================================================
  ___________________________________________________________________ test_example ____________________________________________________________________
  --------------------------------------------------------------- Captured stdout call ----------------------------------------------------------------
  1
  ___________________________________________________________________ test_example ____________________________________________________________________
  --------------------------------------------------------------- Captured stdout call ----------------------------------------------------------------
  1
  ============================================================== short test summary info ==============================================================
  PASSED test_example.py::test_example
  PASSED test_example.py::test_example
  PASSED test_example.py::test_example
  
  Results (0.02s):
         1 passed
  ```
  
  2 problems:
  
  1. stdout is dumped **twice**
  2. PASSED report is printed **trice**
  
  ### If combined with `instafail`
  
  It now also reports the test 3 times! ✓✓✓  
  
  ```
  pytest -rA test_example.py --instafail
  ====================================================================== test session starts =======================================================================
  platform linux -- Python 3.8.5, pytest-6.2.2, py-1.10.0, pluggy-0.13.1
  rootdir: /home/stas/hf/transformers-stas
  plugins: forked-1.3.0, xdist-2.2.0, sugar-0.9.4, instafail-0.4.2
  collected 1 item
  
  test_example.py ✓✓✓                                                                                                                                                            [100%]
  
  ============================================================================= PASSES =============================================================================
  __________________________________________________________________________ test_example __________________________________________________________________________
  ---------------------------------------------------------------------- Captured stdout call ----------------------------------------------------------------------
  1
  __________________________________________________________________________ test_example __________________________________________________________________________
  ---------------------------------------------------------------------- Captured stdout call ----------------------------------------------------------------------
  1
  ==================================================================== short test summary info =====================================================================
  PASSED test_example.py::test_example
  PASSED test_example.py::test_example
  PASSED test_example.py::test_example
  ======================================================================= 3 passed in 0.06s ========================================================================
  ```
  
  W/o `-rA`
  
  ```
  pytest test_example.py --instafail
  ====================================================================== test session starts =======================================================================
  platform linux -- Python 3.8.5, pytest-6.2.2, py-1.10.0, pluggy-0.13.1
  rootdir: /home/stas/hf/transformers-stas
  plugins: forked-1.3.0, xdist-2.2.0, sugar-0.9.4, instafail-0.4.2
  collected 1 item
  
  test_example.py ✓✓✓                                                                                                                                                            [100%]
  
  ======================================================================= 3 passed in 0.01s ========================================================================
  ```
  
  Thanks.