DEBUG: Executing python function do_testsdkext
ERROR:  OE-core's config sanity checker detected a potential misconfiguration.
    Either fix the cause of this error or at your own risk disable the checker (see sanity.conf).
    Following is the list of potential problems / advisories:

    Your system needs to support the en_US.UTF-8 locale.
ERROR: Couldn't install the extensible SDK:
BEC Linux Extensible SDK installer version nodistro.0
=====================================================
You are about to install the SDK to "/mnt/a/oe/build/tmp/work/raspberrypi3-bec-linux-gnueabi/core-image-minimal/1.0-r0/testsdkext". Proceed[Y/n]? Y
Extracting SDK......done
Setting it up...
Extracting buildtools...
Preparing build system...


Contents of preparing_build_system.log:

### Shell environment set up for builds. ###

You can now run 'bitbake <target>'