What steps will reproduce the problem?

lucky(~/src) % cat q/q.go
package q

type Package struct { 
        name string 
}

type Future struct {
        result chan struct {
                *Package
                error
        }
}

func (t *Future) Result() (*Package, error) {
        result := <-t.result
        t.result <- result
        return result.Package, result.error
}

lucky(~/src) % cat q.go 
package main

import "q"

func main() {
        f := new(q.Future)
        f.Result()
}
lucky(~/src) % go build q.go

What is the expected output? What do you see instead?

Want: compilation

Got: # command-line-arguments
./q.go:3: cannot use <-q.t·3.result (type struct { *q.Package; error }) as type
struct {} in assignment
./q.go:3: cannot use q.result·4 (type struct {}) as type struct { *q.Package; error }
in send
./q.go:3: q.result·4.Package undefined (type struct {} has no field or method Package)
./q.go:3: q.result·4.error undefined (type struct {} has no field or method q.error)
./q.go:7: cannot use q.result·4 (type struct {}) as type struct { *q.Package; error }
in function argument
./q.go:7: tempname called with nil type

Rémy suggested there were two issues

* unnamed structs with embedded fields are nuked on import.
* structs with embedded builtins in inlined bodies are buggy like in issue #3552
(although embedded builtins received endless fixes).

Please use labels and text to provide additional information.

See also discussion: https://groups.google.com/d/msg/golang-dev/kK28QLd8jXA/f0deO0VKmW0J