Process task runner fails to produce Outputs

[yuri1969]

Describe the issue

Unlike the Docker task runner the Process one doesn't produce an Output for shell tasks.

---

1. Create following flow:

id: testTaskRunner
namespace: company.team

tasks:
  - id: useTaskRunner
    type: io.kestra.plugin.scripts.shell.Commands
    warningOnStdErr: false
    taskRunner:
      type: io.kestra.plugin.core.runner.Process # FIXME
      #type: io.kestra.plugin.scripts.runner.docker.Docker # OK
    commands:
      - echo 'test'

2. Run using the Process task runner
3. Check the execution's Outputs - they are empty
4. Check the Logs - there is a warning:

java.lang.IllegalArgumentException: No serializer found for class io.kestra.core.models.tasks.runners.TaskRunnerDetailResult and no properties discovered to create BeanSerializer (to avoid exception, disable SerializationFeature.FAIL_ON_EMPTY_BEANS) (through reference chain: io.kestra.plugin.scripts.exec.scripts.models.ScriptOutput["taskRunner"])
	at com.fasterxml.jackson.databind.ObjectMapper._convert(ObjectMapper.java:4636)
	at com.fasterxml.jackson.databind.ObjectMapper.convertValue(ObjectMapper.java:4577)
	at io.kestra.core.serializers.JacksonMapper.toMap(JacksonMapper.java:87)
	at io.kestra.core.models.tasks.Output.

<!-- Failed to upload "serialization.patch" -->

(Output.java:16)
	at io.kestra.core.runners.Worker.runAttempt(Worker.java:818)
	at io.kestra.core.runners.Worker.run(Worker.java:640)
	at io.kestra.core.runners.Worker.handleTask(Worker.java:332)
	at io.kestra.core.runners.Worker.lambda$run$8(Worker.java:261)
	at io.micrometer.core.instrument.internal.TimedRunnable.run(TimedRunnable.java:49)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
	at java.base/java.lang.Thread.run(Thread.java:1583)
Caused by: com.fasterxml.jackson.databind.exc.InvalidDefinitionException: No serializer found for class io.kestra.core.models.tasks.runners.TaskRunnerDetailResult and no properties discovered to create BeanSerializer (to avoid exception, disable SerializationFeature.FAIL_ON_EMPTY_BEANS) (through reference chain: io.kestra.plugin.scripts.exec.scripts.models.ScriptOutput["taskRunner"])
	at com.fasterxml.jackson.databind.exc.InvalidDefinitionException.from(InvalidDefinitionException.java:77)
	at com.fasterxml.jackson.databind.SerializerProvider.reportBadDefinition(SerializerProvider.java:1328)
	at com.fasterxml.jackson.databind.DatabindContext.reportBadDefinition(DatabindContext.java:414)
	at com.fasterxml.jackson.databind.ser.impl.UnknownSerializer.failForEmpty(UnknownSerializer.java:53)
	at com.fasterxml.jackson.databind.ser.impl.UnknownSerializer.serialize(UnknownSerializer.java:30)
	at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:732)
	at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:770)
	at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:184)
	at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider._serialize(DefaultSerializerProvider.java:502)
	at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider.serializeValue(DefaultSerializerProvider.java:341)
	at com.fasterxml.jackson.databind.ObjectMapper._convert(ObjectMapper.java:4614)
	... 11 more

---

The culprit might be the TaskRunnerDetailResult having no valid attributes. Demo: serialization.patch.txt

Environment

• Kestra Version: develop