try suggestion from conda-forge/conda-forge-ci-setup-feedstock#17 (co…

…mment)

bld.py

@@ -1,41 +1,26 @@
 from __future__ import print_function
 
-from functools import partial
-from os.path import exists
 import subprocess
 import sys
-from time import sleep
 
-from conda.common.io import captured
 from conda_build.cli.main_build import main
 import conda_build.utils
 
 _rm_rf = conda_build.utils.rm_rf
 
 
 def rm_rf(path, config=None):
-    with captured() as c:
-        check_call = subprocess.check_call
+        _check_call = subprocess.check_call
+        def check_call(ps_open_args, *args, **kwargs):
+            if isinstance(ps_open_args, str):
+                ps_open_args = ps_open_args.replace('rd /s /q', 'del /F/S/Q')
+                print('>>>>>> running monkeypatched call:', ps_open_args, file=sys.stderr)
+            return _check_call(ps_open_args, *args, **kwargs)
         try:
-            subprocess.check_call = partial(
-                check_call, stdout=sys.stdout, stderr=sys.stderr, close_fds=False,
-            )
+            subprocess.check_call = check_call
             _rm_rf(path, config=config)
-        except OSError:
-            pass
         finally:
-            subprocess.check_call = check_call
-    for output, stream in ((c.stdout, sys.stdout), (c.stderr, sys.stderr)):
-        if output:
-            print(
-                *(
-                    line for line in output.splitlines()
-                    if not line.endswith(' - Access is denied.')
-                ),
-                sep='\n', file=stream)
-    if exists(path):
-        sleep(0.1)
-        _rm_rf(path, config=config)
+            subprocess.check_call = _check_call
 
 
 conda_build.utils.rm_rf = rm_rf