Error "Plugin execution is not covered" after fix "build.plugins.plugin.version" missing "warning for tycho-packaging-plugin

I am using tycho-packaging-plugin to set the output folder for the jar. Here is a shortened version of my pom:

<properties>
    <tycho-version>0.21.0</tycho-version>
</properties>
<build>
  <plugins>
    <plugin>
        <groupId>org.eclipse.tycho</groupId>
        <artifactId>tycho-maven-plugin</artifactId>
        <version>${tycho-version}</version>
        <extensions>true</extensions>
    </plugin>
    <plugin>
        <groupId>org.eclipse.tycho</groupId>
        <artifactId>tycho-packaging-plugin</artifactId>
        <configuration>
            <buildDirectory>${project.build.directory}/plugins</buildDirectory>
        </configuration>
    </plugin>
  </plugins>
</build>

      

        
        
        
      

    

I get a warning if I execute maven-install:

[WARNING] Some problems were encountered while building the effective model for com.foo.bar.devtool:com.foo.bar.devtool:eclipse-plugin:0.0.1-SNAPSHOT
[WARNING] 'build.plugins.plugin.version' for org.eclipse.tycho:tycho-packaging-plugin is missing. @ line 44, column 21
[WARNING] 
[WARNING] It is highly recommended to fix these problems because they threaten the stability of your build.
[WARNING] 
[WARNING] For this reason, future Maven versions might no longer support building such malformed projects.

      

        
        
        
      

    

I follow the advice of the warning and change the pom:

<plugin>
    <groupId>org.eclipse.tycho</groupId>
    <artifactId>tycho-packaging-plugin</artifactId>
    <version>${tycho-version}</version>
    <configuration>
        <buildDirectory>${project.build.directory}/plugins</buildDirectory>
    </configuration>
</plugin>

      

        
        
        
      

    

And after that I get errors after saving the file:

Multiple annotations found at this line:
    - Plugin execution not covered by lifecycle configuration: org.eclipse.tycho:tycho-packaging-plugin:${tycho.version}:build-qualifier (execution: default-build-qualifier, phase: 
     validate)
    - Plugin execution not covered by lifecycle configuration: org.eclipse.tycho:tycho-packaging-plugin:${tycho.version}:validate-version (execution: default-validate-version, 
     phase: validate)
    - Plugin execution not covered by lifecycle configuration: org.eclipse.tycho:tycho-packaging-plugin:${tycho.version}:validate-id (execution: default-validate-id, phase: validate)

      

        
        
        
      

    

How can I solve the problem and avoid getting warnings and errors?