Snippets for matrix-conduit 0.10.15 from Nix aarch64-linux

Sourced from https://hydra.nixos.org/log/cz5rsf2g02g2bcdclarwq6h275nph034-matrix-conduit-0.10.15.drv.

• warning: hiding a lifetime that's elided elsewhere is confusing
     --> src/service/pdu.rs:157:20
      |
  157 |     pub fn room_id(&self) -> Cow<RoomId> {
      |                    ^^^^^     ^^^^^^^^^^^ the same lifetime is hidden here
      |                    |
      |                    the lifetime is elided here
      |
      = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
      = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default