[Mi 3 Q&A, Help & Troubleshooting] ngxieqirong:
Every time it will stop without any errors,just some warnings. here is the log:

chris@U410:~/AndroidSource/cm$ make -j4 cancro
============================================
PLATFORM_VERSION_CODENAME=REL
PLATFORM_VERSION=5.1.1
CM_VERSION=12.1-20150729-UNOFFICIAL-cancro
TARGET_PRODUCT=cm_cancro
TARGET_BUILD_VARIANT=userdebug
TARGET_BUILD_TYPE=release
TARGET_BUILD_APPS=
TARGET_ARCH=arm
TARGET_ARCH_VARIANT=armv7-a-neon
TARGET_CPU_VARIANT=krait
TARGET_2ND_ARCH=
TARGET_2ND_ARCH_VARIANT=
TARGET_2ND_CPU_VARIANT=
HOST_ARCH=x86_64
HOST_OS=linux
HOST_OS_EXTRA=Linux-3.16.0-30-generic-x86_64-with-Ubuntu-14.04-trusty
HOST_BUILD_TYPE=release
BUILD_ID=LMY48G
OUT_DIR=/home/chris/AndroidSource/cm/out
============================================
find: `dummy': No such file or directory
build/core/copy_headers.mk:15: warning: overriding commands for target `/home/chris/AndroidSource/cm/out/target/product/cancro/obj/include/qcom/display/copybit.h'
build/core/copy_headers.mk:15: warning: ignoring old commands for target `/home/chris/AndroidSource/cm/out/target/product/cancro/obj/include/qcom/display/copybit.h'
build/core/copy_headers.mk:15: warning: overriding commands for target `/home/chris/AndroidSource/cm/out/target/product/cancro/obj/include/qcom/display/copybit_priv.h'
build/core/copy_headers.mk:15: warning: ignoring old commands for target `/home/chris/AndroidSource/cm/out/target/product/cancro/obj/include/qcom/display/copybit_priv.h'
PRODUCT_COPY_FILES device/xiaomi/cancro/audio/audio_effects.conf:system/etc/audio_effects.conf ignored.
build/core/Makefile:46: warning: overriding commands for target `/home/chris/AndroidSource/cm/out/target/product/cancro/system/etc/firmware/wcnss.b00'
device/xiaomi/cancro/Android.mk:43: warning: ignoring old commands for target `/home/chris/AndroidSource/cm/out/target/product/cancro/system/etc/firmware/wcnss.b00'
build/core/Makefile:46: warning: overriding commands for target `/home/chris/AndroidSource/cm/out/target/product/cancro/system/etc/firmware/wcnss.b01'
device/xiaomi/cancro/Android.mk:43: warning: ignoring old commands for target `/home/chris/AndroidSource/cm/out/target/product/cancro/system/etc/firmware/wcnss.b01'
build/core/Makefile:46: warning: overriding commands for target `/home/chris/AndroidSource/cm/out/target/product/cancro/system/etc/firmware/wcnss.b02'
device/xiaomi/cancro/Android.mk:43: warning: ignoring old commands for target `/home/chris/AndroidSource/cm/out/target/product/cancro/system/etc/firmware/wcnss.b02'
build/core/Makefile:46: warning: overriding commands for target `/home/chris/AndroidSource/cm/out/target/product/cancro/system/etc/firmware/wcnss.b04'
device/xiaomi/cancro/Android.mk:43: warning: ignoring old commands for target `/home/chris/AndroidSource/cm/out/target/product/cancro/system/etc/firmware/wcnss.b04'
build/core/Makefile:46: warning: overriding commands for target `/home/chris/AndroidSource/cm/out/target/product/cancro/system/etc/firmware/wcnss.b06'
device/xiaomi/cancro/Android.mk:43: warning: ignoring old commands for target `/home/chris/AndroidSource/cm/out/target/product/cancro/system/etc/firmware/wcnss.b06'
build/core/Makefile:46: warning: overriding commands for target `/home/chris/AndroidSource/cm/out/target/product/cancro/system/etc/firmware/wcnss.b07'
device/xiaomi/cancro/Android.mk:43: warning: ignoring old commands for target `/home/chris/AndroidSource/cm/out/target/product/cancro/system/etc/firmware/wcnss.b07'
build/core/Makefile:46: warning: overriding commands for target `/home/chris/AndroidSource/cm/out/target/product/cancro/system/etc/firmware/wcnss.b08'
device/xiaomi/cancro/Android.mk:43: warning: ignoring old commands for target `/home/chris/AndroidSource/cm/out/target/product/cancro/system/etc/firmware/wcnss.b08'
build/core/Makefile:46: warning: overriding commands for target `/home/chris/AndroidSource/cm/out/target/product/cancro/system/etc/firmware/wcnss.b09'
device/xiaomi/cancro/Android.mk:43: warning: ignoring old commands for target `/home/chris/AndroidSource/cm/out/target/product/cancro/system/etc/firmware/wcnss.b09'
build/core/Makefile:46: warning: overriding commands for target `/home/chris/AndroidSource/cm/out/target/product/cancro/system/etc/firmware/wcnss.mdt'
device/xiaomi/cancro/Android.mk:43: warning: ignoring old commands for target `/home/chris/AndroidSource/cm/out/target/product/cancro/system/etc/firmware/wcnss.mdt'
build/core/Makefile:46: warning: overriding commands for target `/home/chris/AndroidSource/cm/out/target/product/cancro/system/lib/libOmxAacEnc.so'
build/core/base_rules.mk:550: warning: ignoring old commands for target `/home/chris/AndroidSource/cm/out/target/product/cancro/system/lib/libOmxAacEnc.so'
build/core/Makefile:46: warning: overriding commands for target `/home/chris/AndroidSource/cm/out/target/product/cancro/system/lib/libOmxAmrEnc.so'
build/core/base_rules.mk:550: warning: ignoring old commands for target `/home/chris/AndroidSource/cm/out/target/product/cancro/system/lib/libOmxAmrEnc.so'
build/core/Makefile:46: warning: overriding commands for target `/home/chris/AndroidSource/cm/out/target/product/cancro/system/lib/libOmxEvrcEnc.so'
build/core/base_rules.mk:550: warning: ignoring old commands for target `/home/chris/AndroidSource/cm/out/target/product/cancro/system/lib/libOmxEvrcEnc.so'
build/core/Makefile:46: warning: overriding commands for target `/home/chris/AndroidSource/cm/out/target/product/cancro/system/lib/libOmxQcelp13Enc.so'
build/core/base_rules.mk:550: warning: ignoring old commands for target `/home/chris/AndroidSource/cm/out/target/product/cancro/system/lib/libOmxQcelp13Enc.so'
build/core/Makefile:46: warning: overriding commands for target `/home/chris/AndroidSource/cm/out/target/product/cancro/system/bin/rild'
build/core/base_rules.mk:550: warning: ignoring old commands for target `/home/chris/AndroidSource/cm/out/target/product/cancro/system/bin/rild'
build/core/Makefile:46: warning: overriding commands for target `/home/chris/AndroidSource/cm/out/target/product/cancro/system/lib/libril.so'
build/core/base_rules.mk:550: warning: ignoring old commands for target `/home/chris/AndroidSource/cm/out/target/product/cancro/system/lib/libril.so'
build/core/Makefile:46: warning: overriding commands for target `/home/chris/AndroidSource/cm/out/target/product/cancro/system/lib/libreference-ril.so'
build/core/base_rules.mk:550: warning: ignoring old commands for target `/home/chris/AndroidSource/cm/out/target/product/cancro/system/lib/libreference-ril.so'
build/core/Makefile:46: warning: overriding commands for target `/home/chris/AndroidSource/cm/out/target/product/cancro/system/lib/librilutils.so'
build/core/base_rules.mk:550: warning: ignoring old commands for target `/home/chris/AndroidSource/cm/out/target/product/cancro/system/lib/librilutils.so'
build/core/Makefile:46: warning: overriding commands for target `/home/chris/AndroidSource/cm/out/target/product/cancro/system/lib/libmm-omxcore.so'
build/core/base_rules.mk:550: warning: ignoring old commands for target `/home/chris/AndroidSource/cm/out/target/product/cancro/system/lib/libmm-omxcore.so'
build/core/Makefile:46: warning: overriding commands for target `/home/chris/AndroidSource/cm/out/target/product/cancro/system/vendor/lib/liblisten.so'
build/core/base_rules.mk:550: warning: ignoring old commands for target `/home/chris/AndroidSource/cm/out/target/product/cancro/system/vendor/lib/liblisten.so'
No private recovery resources for TARGET_DEVICE cancro
device/xiaomi/cancro/mkbootimg.mk:35: warning: overriding commands for target `/home/chris/AndroidSource/cm/out/target/product/cancro/dt.img'
build/core/generate_extra_images.mk:109: warning: ignoring old commands for target `/home/chris/AndroidSource/cm/out/target/product/cancro/dt.img'
[B]make: *** No rule to make target `cancro'. Stop.

#### make failed to build some targets (01:08 (mm:ss)) ####[/B]

Could somebody get me a hand,Thanks!:D