message: nit: GIT_HASH_SHORT should show 7 chars, not 5
diff: @@ -14,10 +14,10 @@ pub fn main() {
  if git_hash.len() > 5 {
  println!(
  "cargo:rustc-env=WASMER_BUILD_GIT_HASH_SHORT={}",
  - &git_hash[..5]
  + &git_hash[..7]
  );
  } else {
  - println!("cargo:rustc-env=WASMER_BUILD_GIT_HASH_SHORT=??????");
  + println!("cargo:rustc-env=WASMER_BUILD_GIT_HASH_SHORT=???????");
  }
  let utc: DateTime<Utc> = Utc::now();
  