Misc fixes

Pass -y to rustup self uninstall to avoid interactive prompt
Update actions-rust-lang/setup-rust-toolchain to main branch

Author: jonasbb

.github/workflows/ci-sub.yaml

@@ -8,13 +8,12 @@ jobs:
     name: "cargo clippy in subdir"
     runs-on: ubuntu-latest
     steps:
-      - run: rustup self uninstall
+      - run: rustup self uninstall -y
       - uses: actions/checkout@v5
-      - uses: actions-rust-lang/setup-rust-toolchain@v1
+      - uses: actions-rust-lang/setup-rust-toolchain@main
         with:
           toolchain: stable
           components: clippy
           rust-src-dir: proj
           override: false
-      - uses: Swatinem/rust-cache@v2
       - run: cargo clippy --all-targets --all-features --locked -- -D

.gitignore

@@ -0,0 +1 @@
+target

Cargo.toml

@@ -5,7 +5,7 @@ edition = "2021"
 
 [lib]
 name = "foobar"
-path = "src/lib.rs"
+path = "proj/src/lib.rs"
 
 [dependencies]
 capnp = "=0.15.0"

proj/src/lib.rs

@@ -1,5 +1,2 @@
+use std::collection::{BTreeMap, HashMap};
 use std::fmt::{self};
-use std::collection::{
-HashMap,
-    BTreeMap}
-;