Trait WriteAsIon is not implemented for Element

[popematt]

error[E0277]: the trait bound `ion_rs::Element: WriteAsIon` is not satisfied
   --> src/bin/ion/commands/schema/validate.rs:234:26
    |
234 |             writer.write(ion_list![].with_annotations(["valid"]))
    |                    ----- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `WriteAsIon` is not implemented for `ion_rs::Element`
    |                    |
    |                    required by a bound introduced by this call
    |
note: required by a bound in `ion_rs::ValueWriter::write`
   --> /Users/popematt/.cargo/registry/src/index.crates.io-6f17d22bba15001f/ion-rs-1.0.0-rc.8/src/lazy/encoder/value_writer.rs:78:32
    |
78  |     fn write(self, value: impl WriteAsIon) -> IonResult<()> {
    |                                ^^^^^^^^^^ required by this bound in `ValueWriter::write`
help: consider borrowing here
    |
234 |             writer.write(&ion_list![].with_annotations(["valid"]))
    |                          +

More generally, it seems like WriteAsIon is implemented for references rather than owned values for a number of things in the data model. This is going to be a bit of a surprise to everyone who is starting to use ion-rust for the first time if we leave things the way they are.