With this patch we move the codebase to Rust-2018.
The diff was generated by executing
cargo fix --all --all-features --edition
on the codebase.
Signed-off-by: Matthias Beyer <mail@beyermatthias.de>
This patch removes the magic constant we used when calling
`trace_unwrap_exit()` or `map_err_trace_exit_unwrap()`.
We used to call it with `1` as parameter, where the number was the exit
code to use. Now the implementation of the function does it
automatically (using 1 (one) as exit code).
All calls of these functions were fixed. Thanks to vim this was easy.
Signed-off-by: Matthias Beyer <mail@beyermatthias.de>
Because this API only errors when write!() errors occur, we can return
the exit code as an error here.
This way the user of the API can immediately exit if there was an IO
error, but the API automatically takes care of the right return value,
returning (exiting) with zero (0) if there was an "Broken pipe" error
and with one (1) otherwise, which is the expected behaviour here.
All calls to that API were changed accordingly.
Signed-off-by: Matthias Beyer <mail@beyermatthias.de>
We should not depend on the version crate, as it is GPL licensed.
We removed the usage of this crate before, but it was still in the
Cargo.toml files (despite being used in the source).
