Your feature request related to a problem? Please describe.

The numtostr linter find wrong usage of fmt.Sprint to parse numbers. Instead, strconv.Itoa should be used.

https://github.com/gostaticanalysis/numtostr

Describe the solution you'd like.

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Describe alternatives you've considered.

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Additional context.

No response