I have been using image builder for years to build a custom image for the espressobin (mvebu). I am currently using 19.07.8 and I can build this fine right now.
I just tried to build 19.07.9 though and it fails with:
Traceback (most recent call last): File "/home/hamish/src/espresso-openwrt/openwrt-imagebuilder-19.07.9-mvebu-cortexa53.Linux-x86_64/scripts/json_add_image_info.py", line 34, in <module> "source_date_epoch": int(getenv("SOURCE_DATE_EPOCH")), ValueError: invalid literal for int() with base 10: '' make: *** [Makefile:117: /home/hamish/src/espresso-openwrt/openwrt-imagebuilder-19.07.9-mvebu-cortexa53.Linux-x86_64/build_dir/target-aarch64_cortex-a53_musl/json_info_files/openwrt-19.07.9-mvebu-cortexa53-globalscale_espressobin-squashfs-sdcard.img.gz.json] Error 1
Is this a known issue with a known solution?