Can't build stripped down S3 flavor of cachepot

I want a no-frills cachepot for my S3-powered CI environment but it won't build. My environment:

% rustc --version
rustc 1.61.0-nightly (52b34550a 2022-03-15)
% cargo --version
cargo 1.61.0-nightly (65c826642 2022-03-09)

The error:

% cargo install cachepot --version 0.1.0-rc.1 --no-default-features --features=s3
[[[ SNIP ]]]
error[E0432]: unresolved import `crate::config::WorkerUrl`
  --> /Users/xlange/.cargo/registry/src/github.com-1ecc6299db9ec823/cachepot-0.1.0-rc.1/src/dist/mod.rs:16:5
   |
16 | use crate::config::WorkerUrl;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^ no `WorkerUrl` in `config`

error[E0412]: cannot find type `WorkerUrl` in module `crate::config`
   --> /Users/xlange/.cargo/registry/src/github.com-1ecc6299db9ec823/cachepot-0.1.0-rc.1/src/compiler/compiler.rs:725:23
    |
725 |     Ok(crate::config::WorkerUrl),
    |                       ^^^^^^^^^ not found in `crate::config`

Some errors have detailed explanations: E0412, E0432.
For more information about an error, try `rustc --explain E0412`.
error: could not compile `cachepot` due to 2 previous errors
warning: build failed, waiting for other jobs to finish...
error: failed to compile `cachepot v0.1.0-rc.1`, intermediate artifacts can be found at `/var/folders/mc/3pj1vp8s239fn610rbv56f440000gp/T/cargo-installTYYXXo`

Caused by:
  build failed

paritytech / cachepot

Can't build stripped down S3 flavor of cachepot #151