Exit with non-zero status if any of the projects are not up-to-date

main.py

@@ -14,6 +14,8 @@ import json
 
 if __name__ == "__main__":
 
+	exit_code = 0
+
 	with open("data.json", "r", encoding="utf-8") as file:
 		data = json.load(file)
 		if sys.stdin.isatty():
@@ -37,6 +39,9 @@ if __name__ == "__main__":
 						print(f"Success: {project} up-to-date")
 					else:
 						print(f"Failure: {project} out-of-sync")
+
+						# Exit with non-zero status if any of the projects are not up-to-date
+						exit_code = 1
 					continue
 				checker_result = project_class.check(data, project, current_time)
 				if checker_result:
@@ -46,9 +51,14 @@ if __name__ == "__main__":
 				elif current_time - data[project]["out_of_sync_since"] \
 					> data[project]["out_of_sync_interval"]:
 					print(f"Failure: {project} out-of-sync")
+
+					# Exit with non-zero status if any of the projects are not up-to-date
+					exit_code = 1
 					continue
 				print(f"Success: {project} up-to-date")
 			except requests.exceptions.RequestException as err:
 				print(f"Error: {project}\n{err}")
 	with open("data.json", "w", encoding="utf-8") as file:
 		json.dump(data, file, indent='\t')
+
+	sys.exit(exit_code)