I am trying to do ant clean all after using some custom extensions and build fails

[Former Member]

 BUILD FAILED
 C:\mafb2b\hybris\bin\platform\build.xml:20: The following error occurred while executing this line:
 C:\mafb2b\hybris\bin\platform\resources\ant\compiling.xml:90: The following error occurred while executing this line:
 C:\mafb2b\hybris\bin\platform\resources\ant\compiling.xml:131: The following error occurred while executing this line:
 C:\mafb2b\hybris\bin\platform\resources\ant\util.xml:49: The following error occurred while executing this line:
 C:\mafb2b\hybris\bin\platform\resources\ant\util.xml:51: The following error occurred while executing this line:
 C:\mafb2b\hybris\bin\platform\resources\ant\compiling.xml:138: The following error occurred while executing this line:
 C:\mafb2b\hybris\bin\platform\resources\ant\compiling.xml:284: The following error occurred while executing this line:
 C:\mafb2b\hybris\bin\platform\resources\ant\util.xml:146: The following error occurred while executing this line:
 C:\mafb2b\hybris\bin\custom\maf\mafstorefront\buildcallbacks.xml:200: The following error occurred while executing this line:
 C:\mafb2b\hybris\bin\platform\resources\ant\util.xml:20: The following error occurred while executing this line:
 C:\mafb2b\hybris\bin\custom\maf\mafstorefront\buildcallbacks.xml:206: The following error occurred while executing this line:
 C:\mafb2b\hybris\bin\ext-accelerator\acceleratorservices\resources\acceleratorservices\ant\acc-ant-commonweb.xml:23: The following error occurred while executing this line:
 C:\mafb2b\hybris\bin\platform\resources\ant\util.xml:20: The following error occurred while executing this line:
 C:\mafb2b\hybris\bin\ext-accelerator\acceleratorservices\resources\acceleratorservices\ant\acc-ant-commonweb.xml:25: The following error occurred while executing this line:
 C:\mafb2b\hybris\bin\platform\resources\ant\util.xml:528: The following error occurred while executing this line:
 C:\mafb2b\hybris\bin\ext-accelerator\acceleratorservices\resources\acceleratorservices\ant\acc-ant-commonweb.xml:35: The following error occurred while executing this line:
 C:\mafb2b\hybris\bin\ext-accelerator\acceleratorservices\resources\acceleratorservices\ant\acc-ant-commonweb.xml:40: Failed to copy C:\mafb2b\hybris\bin\ext-accelerator\acceleratorstorefrontcommons\commonweb\src\de\hybris\platform\acceleratorstorefrontcommons\annotations\PreValidateCheckoutStep.java to C:\mafb2b\hybris\bin\custom\maf\mafstorefront\web\commonwebsrc\acceleratorstorefrontcommons\de\hybris\platform\acceleratorstorefrontcommons\annotations\PreValidateCheckoutStep.java due to failed to create the parent directory for C:\mafb2b\hybris\bin\custom\maf\mafstorefront\web\commonwebsrc\acceleratorstorefrontcommons\de\hybris\platform\acceleratorstorefrontcommons\annotations\PreValidateCheckoutStep.java

[former_member646395]

Did you find how to resolve this issue?

[riparianjoe]

Even though this question is months old, I'm offering this solution: turning off parallel build ( build.parallel=false ) fixed this for me.

[Former Member]

Check localextension.xml this entry is present or not if not add "acceleratorstorefrontcommons"