diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 9c86a95..fa2198c 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -20,7 +20,6 @@ jobs:
     strategy:
       matrix:
         project:
-          - core
           - core18
           - core20
     steps:
@@ -34,6 +33,24 @@ jobs:
         name: 'snap'
         path: ${{ steps.snapcraft.outputs.snap}}
 
+  integration-legacy: # make sure the action works on a clean machine without building
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        project:
+          - core
+    steps:
+    - uses: actions/checkout@v2
+    - uses: ./
+      id: snapcraft
+      with:
+        path: './test-projects/${{ matrix.project }}'
+        snapcraft-channel: 4.x/stable
+    - uses: actions/upload-artifact@v2
+      with:
+        name: 'snap'
+        path: ${{ steps.snapcraft.outputs.snap}}
+
   check-runner: # make sure the action works on each VM image
     strategy:
       matrix:
diff --git a/dist/index.js b/dist/index.js
index bcff02f..ae88a3d 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -1620,7 +1620,17 @@ function ensureLXD() {
         // Ensure that the "lxd" group exists
         const haveSnapLXD = yield haveExecutable('/snap/bin/lxd');
         Object(core.info)('Installing LXD...');
-        yield Object(exec.exec)('sudo', ['snap', haveSnapLXD ? 'refresh' : 'install', 'lxd']);
+        if (haveSnapLXD) {
+            try {
+                yield Object(exec.exec)('sudo', ['snap', 'refresh', 'lxd']);
+            }
+            catch (err) {
+                Object(core.info)("LXD could not be refreshed...");
+            }
+        }
+        else {
+            yield Object(exec.exec)('sudo', ['snap', 'install', 'lxd']);
+        }
         Object(core.info)('Initialising LXD...');
         yield Object(exec.exec)('sudo', ['lxd', 'init', '--auto']);
     });
diff --git a/src/tools.ts b/src/tools.ts
index c8c45cb..2f48d6d 100644
--- a/src/tools.ts
+++ b/src/tools.ts
@@ -49,7 +49,15 @@ export async function ensureLXD(): Promise<void> {
   // Ensure that the "lxd" group exists
   const haveSnapLXD = await haveExecutable('/snap/bin/lxd')
   core.info('Installing LXD...')
-  await exec.exec('sudo', ['snap', haveSnapLXD ? 'refresh' : 'install', 'lxd'])
+  if (haveSnapLXD) {
+    try {
+      await exec.exec('sudo', ['snap', 'refresh', 'lxd'])
+    } catch (err) {
+      core.info('LXD could not be refreshed...')
+    }
+  } else {
+    await exec.exec('sudo', ['snap', 'install', 'lxd'])
+  }
   core.info('Initialising LXD...')
   await exec.exec('sudo', ['lxd', 'init', '--auto'])
 }