reproduce yanked crates in lock file (#1240)

We could easily write the output to a file and run a grep on it to
fail the build, but that would make CI flaky. Instead, make it
easy to detect this issue locally with `just find-yanked`.

.github/workflows/ci.yml

@@ -42,7 +42,7 @@ jobs:
       - name: install Rust via Rustup
         run: curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --profile minimal;
       - uses: Swatinem/rust-cache@v2
-      - run: /github/home/.cargo/bin/cargo build --no-default-features --features max-pure
+      - run: /github/home/.cargo/bin/cargo install --debug --locked --no-default-features --features max-pure --path .
 
   test:
     runs-on: ubuntu-latest

justfile

@@ -242,3 +242,7 @@ fmt:
     cargo +nightly fmt --all -- --config-path rustfmt-nightly.toml
     cargo +stable fmt --all -- --check
     just --fmt --unstable
+
+# Cancel this after the first few seconds, as yanked crates will appear in warnings.
+find-yanked:
+    cargo install --debug --locked --no-default-features --features max-pure --path .