[pietroalbini]

Mozilla has had to reduce its investment in Rust significantly, but it’s not abandoning Rust. Mozilla has committed to financial and logistical support while we get the foundation up and running, and we expect they will become a sponsor once that is an option.

[bishalb]

It's wouldn't be far fetched to say that mozilla could abandon rust in near future.

[estebank]

Abandon as in no longer contributing to the development of the language or as in no longer use it? I find the later incredibly unlikely and the former possible, but also unlikely.