Bump version to 3.5.2a6

platformio/__init__.py

@@ -14,7 +14,7 @@
 
 import sys
 
-VERSION = (3, 5, "2a5")
+VERSION = (3, 5, "2a6")
 __version__ = ".".join([str(s) for s in VERSION])
 
 __title__ = "platformio"

platformio/builder/tools/piomisc.py

@@ -15,7 +15,6 @@
 from __future__ import absolute_import
 
 import atexit
-import io
 import re
 import sys
 from os import environ, remove, walk
@@ -85,7 +84,7 @@ class InoToCPPConverter(object):
 
     def _gcc_preprocess(self, contents, out_file):
         tmp_path = mkstemp()[1]
-        with io.open(tmp_path, mode="w", encoding="utf-8") as fp:
+        with open(tmp_path, "w") as fp:
             fp.write(contents)
         self.env.Execute(
             self.env.VerboseAction(

tests/conftest.py

@@ -24,8 +24,8 @@ from platformio import util
 def validate_cliresult():
 
     def decorator(result):
-        assert result.exit_code == 0
-        assert not result.exception
+        assert result.exit_code == 0, result.output
+        assert not result.exception, result.output
 
     return decorator