Get:1 http://ftp.ir.debian.org/debian/ stable/main libllvm3.5 amd64 1:3.5-10 [7,607 kB]
Fetched 4,542 kB in 4s (944 kB/s)
E: Failed to fetch http://ftp.ir.debian.org/debian/pool/main/l/llvm-toolchain-3.5/libllvm3.5_3.5-10_amd64.deb Size mismatch
Get:1 http://mirror.xamin.ir/debian/ stable/main libllvm3.5 amd64 1:3.5-10 [7,607 kB]
Fetched 7,607 kB in 8s (943 kB/s)
Extracting templates from packages: 100%