logs: use stream.destroy() instead of custom hooks

src/shell.js

@@ -89,7 +89,11 @@ function sudo(tag, args, options, callback) {
         e.code = code;
         e.signal = signal;
 
-        debug(`${tag}: ${SUDO} ${spawnArgs.join(' ').replace(/\n/g, '\\n')} errored`, e);
+        if (cp.terminated) {
+            debug(`${tag}: ${SUDO} ${spawnArgs.join(' ').replace(/\n/g, '\\n')} terminated`); // was killed by us
+        } else {
+            debug(`${tag}: ${SUDO} ${spawnArgs.join(' ').replace(/\n/g, '\\n')} errored`, e);
+        }
 
         callback(e);
     });
@@ -107,6 +111,7 @@ function sudo(tag, args, options, callback) {
     // the workaround is to invoke a kill from a different process group and this is done by starting detached
     // another idea is: use "ps --pid cp.pid -o pid=" to get the pid of the command and then send it signal directly
     cp.terminate = function () {
+        cp.terminated = true; // hint for better debug message in 'exit'
         child_process.spawn('kill', ['-SIGTERM', cp.pid], { detached: true }, (error) => { if (error) debug(`${tag} could not terminate`, error); });
     };