coverage: use process._rawDebug() during setup

console is not ready to use at this point in the bootstrapping
process, so switch to process._rawDebug() instead.

PR-URL: nodejs#25289
Fixes: nodejs#25287
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Yuta Hiroto <hello@hiroppy.me>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

lib/internal/process/coverage.js

@@ -53,7 +53,7 @@ exports.writeCoverage = writeCoverage;
 function setup() {
   const { Connection } = internalBinding('inspector');
   if (!Connection) {
-    console.warn('inspector not enabled');
+    process._rawDebug('inspector not enabled');
     return;
   }
 
@@ -80,7 +80,7 @@ function setup() {
     coverageDirectory = process.env.NODE_V8_COVERAGE =
       resolve(process.env.NODE_V8_COVERAGE);
   } catch (err) {
-    console.error(err);
+    process._rawDebug(err.toString());
   }
 }