Runtime panic on Unmarshal on dictionaries with unhashable keys

[ghost]

The following program produces a panic of the form:

panic: runtime error: hash of unhashable type []interface {} [recovered]
panic: runtime error: hash of unhashable type []interface {}

---

package main
import (
    "fmt"
    "gopkg.in/yaml.v1"
)
func main() {
    var x interface{}
    msg := `{".", ["+"]}`
    yaml.Unmarshal([]byte(msg), &x)
    fmt.Println(x)
}

[ghost]

Another example that will cause panic:

package main
import (
    "fmt"
    "gopkg.in/yaml.v1"
)
func main() {
    var x interface{}
    msg := `{[]}`
    yaml.Unmarshal([]byte(msg), &x)
    fmt.Println(x)
}