Publish is blocked by build error

[dermesser]

...and I unfortunately cannot figure out how to get around bytes-0.5.4, which is a transitive dependency (through e.g. h2):

error: `core::slice::<impl [T]>::len` is not yet stable as a const fn
   --> /home/lbo/.cargo/registry/src/github.com-1ecc6299db9ec823/bytes-0.5.4/src/bytes.rs:130:18
    |
130 |             len: bytes.len(),
    |                  ^^^^^^^^^^^

error: aborting due to previous error

error: Could not compile `bytes`.
warning: build failed, waiting for other jobs to finish...
error: failed to verify package tarball

[dermesser]

Nevermind, my rustc was outdated.