Modified build operations to redirect warning & error streams to success streams.

Author: MrPointer

appveyor.yml

@@ -3,7 +3,7 @@ image: Visual Studio 2017
 environment:
   MINGW_PATH: C:\mingw-w64\x86_64-7.2.0-posix-seh-rt_v5-rev1\mingw64\bin
   matrix:
-#  - ARDUINO_SDK_VERSION: 1.6.13
+  #  - ARDUINO_SDK_VERSION: 1.6.13
   - ARDUINO_SDK_VERSION: 1.8.6
 install:
 - ps: cinst unzip
@@ -27,8 +27,13 @@ build_script:
     -D CMAKE_TOOLCHAIN_FILE="..\cmake\Arduino-Toolchain.cmake"
     -D CMAKE_SH="CMAKE_SH-NOTFOUND"
     --no-warn-unused-cli
-    ..\examples
-- ps: make.exe
+    ..\examples 3>&1
+- ps: |
+    make.exe 2>&1 3>&1
+    if ($LastExitCode -eq 0)
+    {
+      $host.SetShouldExit(0)
+    }
 after_build:
 - 7z a arduino-cmake-ng.zip %APPVEYOR_BUILD_FOLDER%\cmake
 artifacts: