error: linking with 'cc' failed: exit status: 1 (MacOS)

[stephankokkas]

Trying to build and use the MMR Rating System. After running

RUST_LOG=debug cargo run --release --bin rate mmr codeforeces

output is:

   Compiling libc v0.2.93
   Compiling proc-macro2 v1.0.26
   Compiling syn v1.0.69
   Compiling getrandom v0.1.16
   Compiling serde_derive v1.0.125
   Compiling serde v1.0.125
   Compiling libm v0.2.1
   Compiling log v0.4.14
   Compiling ryu v1.0.5
   Compiling memchr v2.3.4
   Compiling serde_json v1.0.64
   Compiling ppv-lite86 v0.2.10
error: linking with `cc` failed: exit status: 1
  |
  = note: "cc" "-m64" "-arch" "x86_64" "-L" "/Users/...

How to fix?

[stephankokkas]

Updated Xcode install --fixed