[Pkg-rust-maintainers] Bug#970104: rust-gstreamer has unsatisfiable dependency on non-existent rust-futures-core-preview

[Peter Michael Green]

I took a look at updating rust-gstreamer to 0.17.4 (this is not the 
latest version, but it is the version corresponding to the current rust 
gtk stack in Debian) and hence solving the dependency issues with the 
current package. There were two unsatisfied dependencies: muldiv 1.x and 
pretty-hex 0.2. The former simply needed an update to the latest 
upstream (there are no other reverse dependencies in Debian), but the 
latter looks like it will need packaging from scratch.