test globbing of rust-toolchain differently

.github/workflows/globbed-directories.yml

@@ -1,23 +0,0 @@
-name: globbed-directories
-
-on: [push, pull_request]
-
-jobs:
-  simple:
-    strategy:
-      fail-fast: false
-      matrix:
-        os: [ubuntu-latest]
-
-    name: Test `cargo check/test` on ${{ matrix.os }}
-    runs-on: ${{ matrix.os }}
-
-    env:
-      CARGO_TERM_COLOR: always
-
-    steps:
-      - uses: actions/checkout@v3
-      - name: Create folder that will be globbed
-        run: |
-          mkdir -p folder/rust-toolchain
-      - uses: ./

tests/rust-toolchain/.keep

@@ -0,0 +1,2 @@
+the `rust-toolchain` directory will be globbed,
+and should not lead to any errors down the road