问题一：VS2010 正在创建“Debug est2.unsuccessfulbuild”，因为已指定“AlwaysCreate”。
方法解决：
The relevant setting is in this file C:Program Files (x86)MSBuildMicrosoft.Cppv4.0Microsoft.CppBuild.targets
Look for the following element of the XML tree:
<Touch AlwaysCreate="true" Files="$(LastBuildUnsuccessful)"/>
注释掉这一句 “<!-- **** -->” ,重新编译。
参考自：https://blog.csdn.net/mangobar/article/details/52592908