Add debug call for paste fetching

src/scrapers/pastebin-com.js

@@ -25,6 +25,7 @@ module.exports = function createPastebinComScraper(options = {}) {
 
 	queue.define("fetchPaste", (task) => {
 		return Promise.try(() => {
+			debug(`Fetching paste ID ${task.pasteKey}...`)
 			return bhttp.get(`http://pastebin.com/api_scrape_item.php?i=${task.pasteKey}`);
 		}).then((response) => {
 			if (response.statusCode !== 200) {