error[E0463]: can't find crate for `os_type`

[dataf3l]

The program used to compile OK, and out of the blue, suddenly it no longer compiles.
I have no idea what happened.

does anybody else has the same problem?

error[E0463]: can't find crate for os_type
--> src/main.rs:37:1
|
37 | extern crate os_type;
| ^^^^^^^^^^^^^^^^^^^^^ can't find crate

error: aborting due to previous error

For more information about this error, try rustc --explain E0463.
error: Could not compile jobs.

[dataf3l]

This happens on Linux