There are some crates that were uploaded just to take the name, but there is no real code in them.
It might be reasonable to upload a new crate and fill it with code only a few days later, but if it takes longer
then it might be considered squatting.
Some measurements we might want to consider
Only one or very few releases.
No or very little code beyond "Hello world"
Has no release for a long time (should 1 month be considered here?)
There are some crates that were uploaded just to take the name, but there is no real code in them. It might be reasonable to upload a new crate and fill it with code only a few days later, but if it takes longer then it might be considered squatting.
Some measurements we might want to consider