Problem trying to build julia-1.3.1 from source

For various reasons I would like to build julia-1.3.1 from source offline. So I downloaded and unpacked julia-1.3.1-full.tar.gz on my online machine, which is an x86_64 workstation running Ubuntu Linux 16.04.6 LTS. I cd’d to julia-1.3.1, and ran ‘make CXXFLAGS=-D_GLIBCXX_USE_CXX11_ABI=0 full-source-dist’. The make started downloading some files, but eventually quit with ‘curl: (22) The requested URL returned error: 404 Not Found’ when it tried to get Further attempts yielded the same result.

Any ideas on what is going wrong?