Please answer these questions before submitting your issue. Thanks!

What version of Go are you using (go version)?

go version go1.8.3 darwin/amd64

What operating system and processor architecture are you using (go env)?

GOARCH="amd64"
GOHOSTARCH="amd64"
GOHOSTOS="darwin"
GOOS="darwin"

What did you do?

import (
  "sync"
  "time"
)

type Thing struct {
  mutex sync.RWMutex
  time time.Time
}

func NewThing() *Thing {
  return &Thing{
    mutex: sync.RWMutex{},
    time: time.Unix(0, 0),
  }
}

What did you expect to see?

Proposal: go vet should warn when initialising a value is unnecessary, i.e. when the zero value for the type is effectively equal to the explicitly initialised value

As someone new to the language, I have not memorised which types have a zero value and what those zero values are

I will look these up now that I know about them, but go vet could help me and others in this case

What did you see instead?

go vet does not indicate any issues about unnecessary initialisation