error: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
   --> src/test.rs:156:13
    |
156 |     assembled: &Vec<u8>,
    |                ^^^^^^^^ help: change this to: `&[u8]`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
note: the lint level is defined here
   --> src/lib.rs:39:32
    |
39  |         #[deny(missing_docs, unused, clippy::all, clippy::pedantic, clippy::nursery, rustdoc::all)]
    |                                      ^^^^^^^^^^^
...
63  | w_error!(mod test);
    | ------------------ in this macro invocation
    = note: `#[deny(clippy::ptr_arg)]` implied by `#[deny(clippy::all)]`
    = note: this error originates in the macro `w_error` (in Nightly builds, run with -Z macro-backtrace for more info)