Pulumi automation does not understand 'output-change'

[Phil1972]

What happened?

I am trying to preview a stack with the newest CLI 3.115.0 and for resources that change, the preview shows 'output-change' instead of the proper verb I guess and that crashes the automation module.

Example

See report above

and the automation fails with this:
System.InvalidOperationException: 'output-change' is not valid Pulumi.Automation.OperationType at Pulumi.Automation.Serialization.OperationTypeConverter.Convert(String input) at Pulumi.Automation.Serialization.Json.ResourceChangesJsonConverter.Read(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options) at System.Text.Json.Serialization.JsonConverter1.TryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value)
at System.Text.Json.Serialization.Metadata.JsonPropertyInfo1.ReadJsonAndSetMember(Object obj, ReadStack& state, Utf8JsonReader& reader) at System.Text.Json.Serialization.Converters.ObjectDefaultConverter1.OnTryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value)
at System.Text.Json.Serialization.JsonConverter1.TryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value) at System.Text.Json.Serialization.Metadata.JsonPropertyInfo1.ReadJsonAndSetMember(Object obj, ReadStack& state, Utf8JsonReader& reader)
at System.Text.Json.Serialization.Converters.ObjectDefaultConverter1.OnTryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value) at System.Text.Json.Serialization.JsonConverter1.TryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value)
at System.Text.Json.Serialization.JsonConverter1.ReadCore(Utf8JsonReader& reader, JsonSerializerOptions options, ReadStack& state) at System.Text.Json.JsonSerializer.Read[TValue](Utf8JsonReader& reader, JsonTypeInfo jsonTypeInfo) at Pulumi.Automation.Serialization.Json.MapToModelJsonConverter2.Read(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options)
at System.Text.Json.Serialization.JsonConverter1.TryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value) at System.Text.Json.Serialization.JsonConverter1.ReadCore(Utf8JsonReader& reader, JsonSerializerOptions options, ReadStack& state)
at System.Text.Json.JsonSerializer.ReadFromSpan[TValue](ReadOnlySpan1 utf8Json, JsonTypeInfo jsonTypeInfo, Nullable1 actualByteCount)
at System.Text.Json.JsonSerializer.ReadFromSpan[TValue](ReadOnlySpan1 json, JsonTypeInfo jsonTypeInfo) at Pulumi.Automation.Events.EventLogWatcher.ReadEventsOnce() at Pulumi.Automation.Events.EventLogWatcher.ReadEventsOnce() at Pulumi.Automation.Events.EventLogWatcher.PollForEvents(CancellationToken externalCancellationToken) at Pulumi.Automation.Events.EventLogWatcher.AwaitPollingTask() at Pulumi.Automation.Events.EventLogWatcher.Stop() at Pulumi.Automation.Commands.LocalPulumiCommand.RunAsync(IList1 args, String workingDir, IDictionary2 additionalEnv, Action1 onStandardOutput, Action1 onStandardError, Action1 onEngineEvent, CancellationToken cancellationToken)
at Pulumi.Automation.Workspace.RunStackCommandAsync(String stackName, IList1 args, Action1 onStandardOutput, Action1 onStandardError, Action1 onEngineEvent, CancellationToken cancellationToken)
at Pulumi.Automation.WorkspaceStack.RunCommandAsync(IList1 args, Action1 onStandardOutput, Action1 onStandardError, Action1 onEngineEvent, CancellationToken cancellationToken)
at Pulumi.Automation.WorkspaceStack.PreviewAsync(PreviewOptions options, CancellationToken cancellationToken)
at Pulumi.Automation.WorkspaceStack.PreviewAsync(PreviewOptions options, CancellationToken cancellationToken)
at Polly.Retry.AsyncRetryEngine.ImplementationAsync[TResult](Func3 action, Context context, CancellationToken cancellationToken, ExceptionPredicates shouldRetryExceptionPredicates, ResultPredicates1 shouldRetryResultPredicates, Func5 onRetryAsync, Int32 permittedRetryCount, IEnumerable1 sleepDurationsEnumerable, Func4 sleepDurationProvider, Boolean continueOnCapturedContext) at Polly.AsyncPolicy.ExecuteAsync[TResult](Func3 action, Context context, CancellationToken cancellationToken, Boolean continueOnCapturedContext)
at Program.Preview(WorkspaceStack stack, Int32 attempt) in /home/vsts/work/1/s/src/Infra.Automation/Program.cs:line 230`

Output of pulumi about

CLI
Version      3.115.0
Go Version   go1.22.2
Go Compiler  gc

Additional context

No response

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[justinvp]

This looks like a regression due to #15903

Before that, we wouldn't show an output-change/output-changed in the summary.

v3.114.0

$ pulumi up
Previewing update (dev)

View in Browser (Ctrl+O): https://app.pulumi.com/...

     Type                       Name        Plan
 +   pulumi:pulumi:Stack        rndtst-dev  create
 +   └─ random:index:RandomPet  username    create

Outputs:
    name: output<string>

Resources:
    + 2 to create

Do you want to perform this update? yes
Updating (dev)

View in Browser (Ctrl+O): https://app.pulumi.com/...

     Type                       Name        Status
 +   pulumi:pulumi:Stack        rndtst-dev  created (0.70s)
 +   └─ random:index:RandomPet  username    created (0.12s)

Outputs:
    name: "equipped-civet"

Resources:
    + 2 created

Duration: 1s

v3.115.1

$ pulumi up
Previewing update (dev)

View in Browser (Ctrl+O): https://app.pulumi.com/...

     Type                       Name        Plan
 +   pulumi:pulumi:Stack        rndtst-dev  create
 +   └─ random:index:RandomPet  username    create

Outputs:
    name: output<string>

Resources:
    + 2 to create
    ~ 1 to output-change
    3 changes

Do you want to perform this update? yes
Updating (dev)

View in Browser (Ctrl+O): https://app.pulumi.com/...

     Type                       Name        Status
 +   pulumi:pulumi:Stack        rndtst-dev  created (1s)
 +   └─ random:index:RandomPet  username    created (0.13s)

Outputs:
    name: "sharing-robin"

Resources:
    + 2 created
    ~ 1 output-changed
    3 changes

Duration: 2s

@PollRobots, can we elide output-change from the output?