diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index e34f02a60..303520c27 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -11,104 +11,6 @@ on:
     - cron: "0 0 * * 0"
 
 jobs:
-  ensure-conventions:
-    name: Ensure conventions are followed
-    runs-on: ubuntu-latest
-
-    steps:
-      # Checks out a copy of your repository on the ubuntu-latest machine
-      - name: Checkout code
-        uses: actions/checkout@v2
-
-      - name: Ensure src/lib.rs files exist
-        run: bash ./_test/ensure-lib-src-rs-exist.sh
-
-      - name: Count ignores
-        run: sh ./_test/count-ignores.sh
-
-      - name: Check UUIDs
-        run: sh ./_test/check-uuids.sh
-
-      - name: Verify exercise difficulties
-        run: ./_test/verify-exercise-difficulties.sh
-
-      - name: Check exercises for authors
-        run: ./_test/check-exercises-for-authors.sh
-
-  configlet:
-    name: Setup configlet
-    runs-on: ubuntu-latest
-
-    steps:
-      # Checks out master locally so that it is available to the scripts.
-      - name: Checkout master
-        uses: actions/checkout@v2
-        with:
-          ref: master
-
-      # Checks out a copy of your repository on the ubuntu-latest machine
-      - name: Checkout code
-        uses: actions/checkout@v2
-
-      - name: Fetch configlet
-        run: ./bin/fetch-configlet
-
-      - name: Check configlet format
-        run: ./_test/check-configlet-fmt.sh
-
-      - name: Ensure readmes are updated
-        run: sh ./_test/ensure-readmes-are-updated.sh
-
-      - name: Lint configlet
-        run: ./bin/configlet lint .
-
-
-  compilation:
-    name: Check compilation
-    runs-on: ubuntu-latest
-
-    strategy:
-      # Allows running the job multiple times with different configurations
-      matrix:
-        rust: ["stable", "beta"]
-        deny_warnings: ['', '1']
-
-    steps:
-      # Checks out master locally so that it is available to the scripts.
-      - name: Checkout master
-        uses: actions/checkout@v2
-        with:
-          ref: master
-
-      # Checks out a copy of your repository on the ubuntu-latest machine
-      - name: Checkout code
-        uses: actions/checkout@v2
-
-      - name: Setup toolchain
-        uses: actions-rs/toolchain@v1
-        with:
-          toolchain: ${{ matrix.rust }}
-          default: true
-
-      # run scripts as steps
-      - name: Check exercises
-        env:
-          DENYWARNINGS: ${{ matrix.deny_warnings }}
-        run: ./_test/check-exercises.sh
-        continue-on-error: ${{ matrix.rust == 'beta' && matrix.deny_warnings == '1' }}
-
-      - name: Ensure stubs compile
-        env:
-          DENYWARNINGS: ${{ matrix.deny_warnings }}
-        run: sh ./_test/ensure-stubs-compile.sh
-        continue-on-error: ${{ matrix.rust == 'beta' && matrix.deny_warnings == '1' }}
-
-      - name: Check exercise crate
-        env:
-          DENYWARNINGS: ${{ matrix.deny_warnings }}
-        run: sh ./_test/check-exercise-crate.sh
-        continue-on-error: ${{ matrix.rust == 'beta' && matrix.deny_warnings == '1' }}
-
   clippy:
     name: Clippy
     runs-on: ubuntu-latest
@@ -141,35 +43,3 @@ jobs:
         env:
           CLIPPY: true
         run: ./_test/check-exercises.sh
-
-      - name: Clippy stubs
-        env:
-          CLIPPY: true
-        run: sh ./_test/ensure-stubs-compile.sh
-
-  nightly-compilation:
-    name: Check exercises on nightly (benchmark enabled)
-    runs-on: ubuntu-latest
-    continue-on-error: true # It's okay if the nightly job fails
-
-    steps:
-      # Checks out master locally so that it is available to the scripts.
-      - name: Checkout master
-        uses: actions/checkout@v2
-        with:
-          ref: master
-
-      # Checks out a copy of your repository on the ubuntu-latest machine
-      - name: Checkout code
-        uses: actions/checkout@v2
-
-      - name: Setup nightly toolchain
-        uses: actions-rs/toolchain@v1
-        with:
-          toolchain: nightly
-          default: true
-
-      - name: Check exercises
-        env:
-          BENCHMARK: '1'
-        run: ./_test/check-exercises.sh
diff --git a/_test/check-exercises.sh b/_test/check-exercises.sh
index 7dd0c3121..84c20f880 100755
--- a/_test/check-exercises.sh
+++ b/_test/check-exercises.sh
@@ -28,7 +28,7 @@ fi
 
 repo=$(cd "$(dirname "$0")/.." && pwd)
 
-if [ "$GITHUB_EVENT_NAME" = "pull_request" ]; then
+if false; then
    files="$(git diff --diff-filter=d --name-only remotes/origin/master | grep "exercises/" | cut -d '/' -f -2 | sort -u | awk -v repo=$repo '{print repo"/"$1}')"
 else
 	files=$repo/exercises/*
diff --git a/bin/test-exercise b/bin/test-exercise
index 714ba41a4..17d6bad49 100755
--- a/bin/test-exercise
+++ b/bin/test-exercise
@@ -84,9 +84,8 @@ done
    cd $exercise
    if [ -n "$CLIPPY" ]; then
      # Consider any Clippy to be an error in tests only.
-     # For now, not the example solutions since they have many Clippy warnings,
-     # and are not shown to students anyway.
      sed -i -e '1i #![deny(clippy::all)]' tests/*.rs
+     sed -i -e '1i #![deny(clippy::all)]' src/lib.rs
      cargo clippy --tests --color always "$@" 2>clippy.log
      if [ $? -ne 0 ]; then
        cat clippy.log