Carnival of Rust @1880singapore @ 1880 https://t.co/aQ9uGXHRMG
Central Region
[{'url': 'https://t.co/aQ9uGXHRMG', 'expanded_url': 'https://www.instagram.com/p/CWt2W1yBxQMcsj6EfJhAwsXSqEwlVt4bk7vek00/?utm_medium=twitter', 'display_url': 'instagram.com/p/CWt2W1yBxQMc…', 'indices': [39, 62]}]
ROBERTSON QUAY
['carnival', 'rust', '@1880singapore', '1880', 'https://t.co/aq9ugxhrmg']
['rust']
carnival rust @    singapore
carnival rust 1880
  [
    {"relatedness": False, "type": "none", "explanation": "This is not related to public housing or maintenance issues."},
    ]

It seems that the provided Twitter post does not relate to a maintenance report feedback to a public flat house. The term "carnival rust" is not a common term used in maintenance or housing context, and it does not provide any specific information or details that would indicate otherwise. Therefore, the answer is that the post does not relate to a maintenance report feedback to public flat house.