ClassNotFoundException while loading Saros/I in Jetbrains CLion IDE v2021.2

[robertgroh]

Describe the bug
While loading the Saros Plugin in Jetbrains CLion IDE, the startup of the IDE aborts with an ClassNotFoundException and the plugin is disabled for the next start of the IDE

To Reproduce
Steps to reproduce the behavior:

1. Install Saros Dev-Build (saros-intellij-dev-a969bb9cd4) in the Jetbrains CLion IDE v2021.2 (Release Candidate build 212.4746.61)
2. Restart the IDE, after activating the plugin
3. On startup, an ClassNotFoundException is thrown, while loading saros (see the following log)

Expected behavior
Saros can succesfully loaded/initialized in Jetbrains CLion IDE v2021.2 (Release Candidate build 212.4746.61)

Log files

INFO - llij.ide.plugins.PluginManager - Loaded custom plugins: Toml (0.2.151.3997-212), Saros (0.3.0.DEV-a969bb9cd4), Rust (0.4.151.3997-212)
INFO - #com.intellij.idea.Main - WM detected: KWin
ERROR - llij.ide.plugins.PluginManager - com.intellij.diagnostic.PluginException: Fatal error initializing '
saros.intellij.SarosComponent
' [Plugin: saros]
java.util.concurrent.CompletionException: com.intellij.diagnostic.PluginException: Fatal error initializing '
saros.intellij.SarosComponent
' [Plugin: saros]
at java.base/java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:314)
at java.base/java.util.concurrent.CompletableFuture.uniAcceptNow(CompletableFuture.java:757)
at java.base/java.util.concurrent.CompletableFuture.uniAcceptStage(CompletableFuture.java:731)
at java.base/java.util.concurrent.CompletableFuture.thenAccept(CompletableFuture.java:2108)
at com.intellij.idea.ApplicationLoader$initApplication$2.apply(ApplicationLoader.kt:75)
at com.intellij.idea.ApplicationLoader$initApplication$2.apply(ApplicationLoader.kt)
at java.base/java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:1072)
at java.base/java.util.concurrent.CompletableFuture$Completion.exec(CompletableFuture.java:479)
at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:290)
at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1020)
at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1656)
at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1594)
at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:183)
Caused by: com.intellij.diagnostic.PluginException: Fatal error initializing '
saros.intellij.SarosComponent
' [Plugin: saros]
at com.intellij.serviceContainer.ComponentManagerImpl.handleInitComponentError$intellij_platform_serviceContainer(ComponentManagerImpl.kt:515)
at com.intellij.serviceContainer.ComponentManagerImpl.registerComponents(ComponentManagerImpl.kt:387)
at com.intellij.serviceContainer.ComponentManagerImpl.access$registerComponents(ComponentManagerImpl.kt:58)
at com.intellij.serviceContainer.ComponentManagerImpl.registerComponents(ComponentManagerImpl.kt:255)
at com.intellij.openapi.client.ClientAwareComponentManager.registerComponents(ClientAwareComponentManager.kt:63)
at com.intellij.idea.ApplicationLoader$initApplication$2$1.accept(ApplicationLoader.kt:77)
at com.intellij.idea.ApplicationLoader$initApplication$2$1.accept(ApplicationLoader.kt)
at java.base/java.util.concurrent.CompletableFuture.uniAcceptNow(CompletableFuture.java:753)
... 11 more
Caused by: java.lang.ClassNotFoundException:
saros.intellij.SarosComponent
PluginClassLoader(plugin=PluginDescriptor(name=Saros, id=saros, descriptorPath=plugin.xml, path=~/.local/share/JetBrains/Toolbox/apps/CLion/ch-1/212.4746.61.plugins/saros-intellij, version=0.3.0.DEV-a969bb9cd4, package=null), packagePrefix=null, instanceId=59, state=active)
at com.intellij.ide.plugins.cl.PluginClassLoader.loadClass(PluginClassLoader.java:254)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
at com.intellij.serviceContainer.ComponentManagerImpl.registerComponent(ComponentManagerImpl.kt:441)
at com.intellij.serviceContainer.ComponentManagerImpl.registerComponents(ComponentManagerImpl.kt:380)
... 17 more

ERROR - llij.ide.plugins.PluginManager - CLion 2021.2 Build #CL-212.4746.61
ERROR - llij.ide.plugins.PluginManager - JDK: 11.0.11; VM: OpenJDK 64-Bit Server VM; Vendor: JetBrains s.r.o.
ERROR - llij.ide.plugins.PluginManager - OS: Linux
ERROR - llij.ide.plugins.PluginManager - Plugin to blame: Saros version: 0.3.0.DEV-a969bb9cd4
INFO - e.plugins.DisabledPluginsState - Plugins to disable: [saros]
INFO -
INFO - Plugin Error
INFO - Plugin 'saros' failed to initialize and will be disabled. Please restart CLion.
INFO -
INFO - java.lang.ClassNotFoundException:
saros.intellij.SarosComponent
PluginClassLoader(plugin=PluginDescriptor(name=Saros, id=saros, descriptorPath=plugin.xml, path=~/.local/share/JetBrains/Toolbox/apps/CLion/ch-1/212.4746.61.plugins/saros-intellij, version=0.3.0.DEV-a969bb9cd4, package=null), packagePrefix=null, instanceId=59, state=active)
at com.intellij.ide.plugins.cl.PluginClassLoader.loadClass(PluginClassLoader.java:254)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
at com.intellij.serviceContainer.ComponentManagerImpl.registerComponent(ComponentManagerImpl.kt:441)
at com.intellij.serviceContainer.ComponentManagerImpl.registerComponents(ComponentManagerImpl.kt:380)
at com.intellij.serviceContainer.ComponentManagerImpl.access$registerComponents(ComponentManagerImpl.kt:58)
at com.intellij.serviceContainer.ComponentManagerImpl.registerComponents(ComponentManagerImpl.kt:255)
at com.intellij.openapi.client.ClientAwareComponentManager.registerComponents(ClientAwareComponentManager.kt:63)
at com.intellij.idea.ApplicationLoader$initApplication$2$1.accept(ApplicationLoader.kt:77)
at com.intellij.idea.ApplicationLoader$initApplication$2$1.accept(ApplicationLoader.kt)
at java.base/java.util.concurrent.CompletableFuture.uniAcceptNow(CompletableFuture.java:753)
at java.base/java.util.concurrent.CompletableFuture.uniAcceptStage(CompletableFuture.java:731)
at java.base/java.util.concurrent.CompletableFuture.thenAccept(CompletableFuture.java:2108)
at com.intellij.idea.ApplicationLoader$initApplication$2.apply(ApplicationLoader.kt:75)
at com.intellij.idea.ApplicationLoader$initApplication$2.apply(ApplicationLoader.kt)
at java.base/java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:1072)
at java.base/java.util.concurrent.CompletableFuture$Completion.exec(CompletableFuture.java:479)
at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:290)
at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1020)
at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1656)
at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1594)
at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:183)

Environment (please complete the following information):

• OS: Ubuntu 20.04.2 LTS (JDK: 11.0.11; VM: OpenJDK 64-Bit Server VM; Vendor: JetBrains s.r.o.)
• IDE: Jetbrains CLion IDE v2021.2 (Release Candidate build 212.4746.61)
  but also reproducible with the latest EAP build (no subscription or triale period required): 2021.2 Beta build 212.4746.15
  (to download the EAP build, scroll to the version 2021.2 Beta build 212.4746.15 on the CLion EAP Page)
• Saros Version: saros-intellij-dev-a969bb9cd4
  (Dev/Master-Build, suggested by Saros/I 0.3.0 not compatible with JetBrains IDEs version 2021.X and higher #1143 (comment) for the 2021 JetBrains platform)

[gamma-02]

Getting the same issue. Downgrading Intellij to the latest 2020 version fixed it.

[lowdev]

@tobous, i Tried to update intellijVersion to "2021.2.2"
and plugin.xml idea-version since-build

but we still have the same issue...

Do you have any clue how to make it compatible ?

[KevinStarWars]

We're having the same problem on this build:
IntelliJ IDEA 2021.3.2 (Ultimate Edition)
Build #IU-213.6777.52, built on January 28, 2022

Can you please review this issue?