Also include the commit in the cache key for truffleruby-head

* That way new caches can be created if the previous cache is for a different commit.

README.md

@@ -15,7 +15,7 @@ This action currently supports these versions of MRI, JRuby and TruffleRuby:
 | Interpreter | Versions |
 | ----------- | -------- |
 | Ruby | 2.2, 2.3.0 - 2.3.8, 2.4.0 - 2.4.10, 2.5.0 - 2.5.8, 2.6.0 - 2.6.6, 2.7.1, head, debug, mingw, mswin |
-| JRuby | 9.1.17.0, 9.2.9.0 - 9.2.11.1, head |
+| JRuby | 9.1.17.0, 9.2.9.0 - 9.2.12.0, head |
 | TruffleRuby | 19.3.0 - 20.1.0, head |
 | Rubinius | 4.14 |
 
@@ -31,7 +31,7 @@ On Windows, Ruby 2.4 uses OpenSSL 1.0.2, which is no longer maintained.
 
 ### Supported Platforms
 
-The action works for all [GitHub-hosted runners](https://help.github.com/en/actions/automating-your-workflow-with-github-actions/virtual-environments-for-github-hosted-runners).
+The action works for all [GitHub-hosted runners](https://help.github.com/en/actions/automating-your-workflow-with-github-actions/virtual-environments-for-github-hosted-runners), and [self-hosted runners](https://docs.github.com/en/actions/hosting-your-own-runners/about-self-hosted-runners), under [certain conditions](#limitations)
 
 | Operating System | Recommended | Other Supported Versions |
 | ----------- | -------- | -------- |
@@ -129,7 +129,7 @@ This caching speeds up installing gems significantly and avoids too many request
 It needs a `Gemfile` under the [`working-directory`](#working-directory).  
 The caching works whether there is a `Gemfile.lock` or not.
 If there is a `Gemfile.lock`, `bundle config --local deployment true` is used.
-  
+
 To perform caching, this action will use `bundle config --local path vendor/bundle`.  
 Therefore, the Bundler `path` should not be changed in your workflow for the cache to work.
 
@@ -194,7 +194,11 @@ This follows the [recommendations](https://github.com/actions/toolkit/blob/maste
 
 ## Limitations
 
-* This action currently only works with GitHub-hosted runners, not private runners.
+### Using self-hosted runners
+You must meet the following parameters to use this action with self-hosted runners:
+
+* Make sure that the operating system has `libyaml-0` installed
+* The runner software is running as user `runner` with a home directory of `/home/runner`, or you have created a symlink for the home directory of whatever user that the runner is running as to `/home/runner`.
 
 ## History
 

dist/index.js

@@ -2427,7 +2427,17 @@ async function bundleInstall(platform, engine, version) {
   console.log(`Cache key: ${key}`)
 
   // restore cache & install
-  const cachedKey = await cache.restoreCache(paths, key, restoreKeys)
+  let cachedKey = null
+  try {
+    cachedKey = await cache.restoreCache(paths, key, restoreKeys)
+  } catch (error) {
+    if (error.name === cache.ValidationError.name) {
+      throw error;
+    } else {
+      core.info(`[warning] There was an error restoring the cache ${error.message}`)
+    }
+  }
+
   if (cachedKey) {
     console.log(`Found cache for key: ${cachedKey}`)
   }
@@ -2459,7 +2469,7 @@ async function bundleInstall(platform, engine, version) {
 
 async function computeBaseKey(platform, engine, version) {
   let baseKey = `setup-ruby-bundle-install-${platform}-${engine}-${version}`
-  if (engine === 'ruby' && common.isHeadVersion(version)) {
+  if (engine !== 'jruby' && common.isHeadVersion(version)) {
     let revision = '';
     await exec.exec('ruby', ['-e', 'print RUBY_REVISION'], {
       silent: true,

index.js

@@ -241,7 +241,17 @@ async function bundleInstall(platform, engine, version) {
   console.log(`Cache key: ${key}`)
 
   // restore cache & install
-  const cachedKey = await cache.restoreCache(paths, key, restoreKeys)
+  let cachedKey = null
+  try {
+    cachedKey = await cache.restoreCache(paths, key, restoreKeys)
+  } catch (error) {
+    if (error.name === cache.ValidationError.name) {
+      throw error;
+    } else {
+      core.info(`[warning] There was an error restoring the cache ${error.message}`)
+    }
+  }
+
   if (cachedKey) {
     console.log(`Found cache for key: ${cachedKey}`)
   }
@@ -273,7 +283,7 @@ async function bundleInstall(platform, engine, version) {
 
 async function computeBaseKey(platform, engine, version) {
   let baseKey = `setup-ruby-bundle-install-${platform}-${engine}-${version}`
-  if (engine === 'ruby' && common.isHeadVersion(version)) {
+  if (engine !== 'jruby' && common.isHeadVersion(version)) {
     let revision = '';
     await exec.exec('ruby', ['-e', 'print RUBY_REVISION'], {
       silent: true,