update depreciated code (#7502)

* `zig env`:

* fix depreciated interface, update outStream -> writer
* make code more readable by updating `anytype` -> `std.fs.File.Writer`
51a904677cg-w1 committed on 12/23/2020, 11:01:29 AM· committed by GitHubparent4128eea
5 files changedLine totals unavailable