Rollup merge of #89950 - infinity0:master, r=Mark-Simulacrum

bootstrap: tweak verbosity settings

Currently the verbosity settings are:
- 2: RUSTC-SHIM envvars get spammed on every invocation, O(30) lines
     cargo is passed -v which outputs CLI invocations, O(5) lines
- 3: cargo is passed -vv which outputs build script output, O(0-10) lines

This commit changes it to:

- 1: cargo is passed -v, O(5) lines
- 2: cargo is passed -vv, O(10) lines
- 3: RUSTC-SHIM envvars get spammed, O(30) lines

src/bootstrap/bootstrap.py

@@ -980,7 +980,7 @@ class RustBuild(object):
                 self.cargo()))
         args = [self.cargo(), "build", "--manifest-path",
                 os.path.join(self.rust_root, "src/bootstrap/Cargo.toml")]
-        for _ in range(1, self.verbose):
+        for _ in range(0, self.verbose):
             args.append("--verbose")
         if self.use_locked_deps:
             args.append("--locked")