Building scryer-prolog on windows produces a future incompatibility warning

[Skgland]

warning: output filename collision.
The bin target `scryer-prolog` in package `scryer-prolog v0.9.3 (C:\Users\Bennet\Git\scryer-prolog-1)` has the same output filename as the lib target `scryer-prolog` in package `scryer-prolog v0.9.3 (C:\Users\Bennet\Git\scryer-prolog-1)`.
Colliding filename is: C:\Users\Bennet\Git\scryer-prolog-1\target\debug\deps\scryer_prolog.pdb
The targets should have unique names.
Consider changing their names to be unique or compiling them separately.
This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
   Compiling scryer-prolog v0.9.3 (C:\Users\Bennet\Git\scryer-prolog-1)