Failing to compile
I've cloned and tried to run RUSTUP=0 make
and encounter the following compile error:
>>> RUSTUP=0 make
cargo +1.39.0 build --release
error: no such subcommand: `+1.39.0`
make: *** [Makefile:43: all] Error 101
Exception: make exited with 2
[tty], line 1: RUSTUP=0 make
Using rust and cargo version 1.39.0 on alpine linux.