restic/changelog/unreleased/issue-2491

Bugfix: Don't require `self-update --output` placeholder file

`restic self-update --output /path/to/new-restic` used to require that
new-restic was an existing file, to be overwritten. Now it's possible
to download an updated restic binary to a new path, without first
having to create a placeholder file.

https://github.com/restic/restic/issues/2491
https://github.com/restic/restic/pull/2937
Don't require `self-update --output` placeholder file This removes the requirement on `restic self-update --output` to point to a path of an existing file, to overwrite. In case the specified path does exist we still want to verify that it's a regular file, rather than a directory or a device, which gets overwritten. We also want to verify that a path to a new file exists within an existing directory. The alternative being running into that issue after the actual download, etc has completed. While at it I also replace `errors.Errorf` with the more appropriately verbose `errors.Fatalf`. Resolves #2491 2020-09-20 10:04:08 +00:00			Bugfix: Don't require `self-update --output` placeholder file

			`restic self-update --output /path/to/new-restic` used to require that
			`new-restic was an existing file, to be overwritten. Now it's possible`
			`to download an updated restic binary to a new path, without first`
			`having to create a placeholder file.`

			`https://github.com/restic/restic/issues/2491`
			`https://github.com/restic/restic/pull/2937`