Log entry 1

Today I learned that `rustfmt` is now a part of `rustup`. So I need
to actually look it up in PATH instead of using `cargo-fmt`.

I also learned that `mk` is the file that does the main work and is
shared by `cargo-new` and `cargo-init`, as expected.

Printing inside `mk` produces output as expected.

src/cargo/ops/cargo_new.rs

@@ -573,6 +573,8 @@ fn init_vcs(path: &Path, vcs: VersionControl, config: &Config) -> CargoResult<()
 }
 
 fn mk(config: &Config, opts: &MkOptions<'_>) -> CargoResult<()> {
+    println!("Entering 'mk'");
+
     let path = opts.path;
     let name = opts.name;
     let cfg = config.get::<CargoNewConfig>("cargo-new")?;
@@ -719,6 +721,8 @@ mod tests {
         config.shell().warn(msg)?;
     }
 
+    println!("Leaving 'mk'");
+
     Ok(())
 }