Same error reported multiple times

[vdemario]

I'm using vscode version 1.16.1 with the Go plugin on version 0.6.65. Recently (first time I noticed it was yesterday when I updated vscode but it might not be related) some build errors are reported multiple times.

@ramya-rao-a suspects it's related to go.buildOnSave being set as workspace. My workspace has a couple of packages that import a base package, if a build error happens on the base package each subpackage reports the same error. If I have an error is on one of the subpackages instead of the base package it gets reported only once.

These are my settings:

{
    "window.zoomLevel": 0,
    "editor.fontSize": 14,
    "editor.fontFamily": "Hack, Menlo, Monaco, 'Courier New', monospace",
    "terminal.integrated.fontSize": 15,
    "git.checkoutType": "local",
    "go.formatTool": "goimports",
    "go.autocompleteUnimportedPackages": true,
    "git.confirmSync": false,
    "go.useCodeSnippetsOnFunctionSuggest": true,
    "workbench.startupEditor": "newUntitledFile",
    "files.autoSave": "off",
    "javascript.format.enable": false,
    "go.lintOnSave": "off",
    "go.vetOnSave": "off",
    "go.formatOnSave": true,
    "go.buildOnSave": "workspace",
    "go.testOnSave": false,
    "go.coverOnSave": false
}

The problems tab looks like this (I just wrote some gibberish on a random file to get a build error):

And these are the contents of the output tab:

Finished running tool: /usr/local/go/bin/go test -i -c -o /var/folders/3k/_4m7yyl97y71y4kcb8zhbr3h0000gr/T/go-code-check github.com/mendelics/abcd-api
/Users/vitor/src/github.com/mendelics/abcd-api/consensus_old.go:20: undefined: asdahsgfdhagfsdasdadasd

Finished running tool: /usr/local/go/bin/go test -i -c -o /var/folders/3k/_4m7yyl97y71y4kcb8zhbr3h0000gr/T/go-code-check github.com/mendelics/abcd-api/repository
/Users/vitor/src/github.com/mendelics/abcd-api/consensus_old.go:20: undefined: asdahsgfdhagfsdasdadasd

Finished running tool: /usr/local/go/bin/go test -i -c -o /var/folders/3k/_4m7yyl97y71y4kcb8zhbr3h0000gr/T/go-code-check github.com/mendelics/abcd-api/cmd/abcdworker
/Users/vitor/src/github.com/mendelics/abcd-api/consensus_old.go:20: undefined: asdahsgfdhagfsdasdadasd

Finished running tool: /usr/local/go/bin/go test -i -c -o /var/folders/3k/_4m7yyl97y71y4kcb8zhbr3h0000gr/T/go-code-check github.com/mendelics/abcd-api/handler
/Users/vitor/src/github.com/mendelics/abcd-api/consensus_old.go:20: undefined: asdahsgfdhagfsdasdadasd

Finished running tool: /usr/local/go/bin/go test -i -c -o /var/folders/3k/_4m7yyl97y71y4kcb8zhbr3h0000gr/T/go-code-check github.com/mendelics/abcd-api/cmd/abcdserver
/Users/vitor/src/github.com/mendelics/abcd-api/consensus_old.go:20: undefined: asdahsgfdhagfsdasdadasd

Finished running tool: /usr/local/go/bin/go test -i -c -o /var/folders/3k/_4m7yyl97y71y4kcb8zhbr3h0000gr/T/go-code-check github.com/mendelics/abcd-api/cmd/abcdscheduler
/Users/vitor/src/github.com/mendelics/abcd-api/consensus_old.go:20: undefined: asdahsgfdhagfsdasdadasd

Finished running tool: /usr/local/go/bin/go test -i -c -o /var/folders/3k/_4m7yyl97y71y4kcb8zhbr3h0000gr/T/go-code-check github.com/mendelics/abcd-api/middleware

Let me know if there's anything else I can add to this.

[ramya-rao-a]

The different packages are compiled in parallel, so that output pane will continue to show the results as above.

What we can do is remove the duplicates from the final results here: https://github.com/Microsoft/vscode-go/blob/0.6.65/src/goCheck.ts#L294

This should be an easy fix if anyone wants to give it a try