Discovered [by crater](https://crater-reports.s3.amazonaws.com/beta-1.31-2/beta-2018-11-13/reg/postgis-0.6.0/log.txt): ``` $ git clone https://github.com/andelf/rust-postgis $ cd rust-postgis $ cargo +beta test ``` cc @rust-lang/compiler, cc @andelf, @pka
