How programmers transition between languages

[Mafi]

On Monday, 29 January 2018 at 11:48:07 UTC, Russel Winder wrote:
> [...]
> One thing that Go got almost right was the way of using FOSS 
> packages and libraries. Rust, via Cargo, did a much better job. 
> Go has a small standard library and allows use of any DVCS, 
> there is no central contributed system. Rust/Cargo has a small 
> standard library, a central contributed library, and the 
> ability to use arbitrary DVCS. Rust/Cargo wins on this hands 
> down. I suggest Dub needs more work to be like Cargo. This and 
> documentation strike me as the most important things for the 
> evolution of D.
> [...]

What would you say are the most important differences between dub 
and Cargo? What does Cargo do better than dub (or worse for that 
matter)? Superficially, they seem to be designed quite similarly.

Mafi