GEN     /srv/build/amery/allwinner/sunxi-nightly/build_u-boot/build_a10_mid_1gb/Makefile
Configuring for A10_MID_1GB - Board: sun4i, Options: A10_MID_1GB,SPL
  GEN     include/autoconf.mk.dep
  GEN     include/autoconf.mk
  CHK     include/config/uboot.release
  CHK     include/generated/timestamp_autogenerated.h
  GEN     /srv/build/amery/allwinner/sunxi-nightly/build_u-boot/build_a10_mid_1gb/Makefile
  UPD     include/generated/timestamp_autogenerated.h
  UPD     include/config/uboot.release
  CHK     include/generated/version_autogenerated.h
  Using /srv/build/amery/allwinner/sunxi-nightly/u-boot-sunxi as source for u-boot
  /srv/build/amery/allwinner/sunxi-nightly/u-boot-sunxi is not clean, please run 'make mrproper'
  in the '/srv/build/amery/allwinner/sunxi-nightly/u-boot-sunxi' directory.
make[1]: *** [prepare3] Error 1
make[1]: *** Waiting for unfinished jobs....
  UPD     include/generated/version_autogenerated.h
make: *** [sub-make] Error 2