Enabling verbose output will output more detailed information in the console. This is useful for troubleshooting errors during compilation or upload.
Enable verbose output
Verbose output is enabled in Preferences.
File > Preferences
Arduino IDE > Preferences
For the verbose output setting, tick compilation, upload, or both.
Copy error output
When the IDE throws an error, the output can be copied to your clipboard by clicking the Copy error messages button. You can then paste the output in a document for saving, or share it via email or on the web.