Why is meteor app created from `meteor build` not showing server-side console.log output?

I’m trying to debug an app that is run from a meteor build /some/dirbundle.

I run it by doing:

cd /some/dir
tar -zxf app.tar.gz
cd bundle

Then I follow the instructions in README. The resulting app can be accessed just fine, locally, but I’m not seeing server-side console.log output.

I’m seeing this console.log output when I run the non-bundled app via meteor or iron.

Any help or clues appreciated.