go_time_tracker.yml

---
owner: "Phillip Dudley"
initialized: "2012-10-31 15:50:13.793654 +0000 UTC"
time_data:
  - action: "start"
    time: "2012-10-31 15:50:13.793654 +0000 UTC"
  - action: "stop"
    time: "2012-10-31 16:00:00.000000 +0000 UTC"

go_yaml_practice.go

package main

import (
	"fmt"
	"gopkg.in/yaml.v2"
	"io/ioutil"
	"log"
	"time"
)

type Date_File struct {
	Owner    string      `yaml:"owner"`
	Init     time.Time   `yaml:"initialized"`
	TimeData []Time_Data `yaml:"time_data"`
}

type Time_Data struct {
	//
	Action string    `yaml:"action"`
	Time   time.Time `yaml:"time"`
}

func checkerr(err error) {
	if err != nil {
		log.Fatal(err)
	}
}

func read() (td *Date_File) {
	//td := &Date_File{}
	gtt_config, err := ioutil.ReadFile("go_time_tracker.yml")
	checkerr(err)
	err = yaml.Unmarshal(gtt_config, &td)
	return td
}

func main() {
	//
	time_data := read()
	fmt.Println(time_data)
	fmt.Println(time_data.TimeData[0])
	fmt.Println(time_data.Owner)
}

go_yaml_practice_error_output.sh

$ go run yaml_practice_2.go 
&{Phillip Dudley 0001-01-01 00:00:00 +0000 UTC []}
panic: runtime error: index out of range

goroutine 1 [running]:
panic(0x559840, 0xc82000a0e0)
	/usr/lib/go-1.6/src/runtime/panic.go:481 +0x3e6
main.main()
	/home/predatorian/Documents/go/src/predatorian/yaml/yaml_practice_2.go:41 +0x2aa
exit status 2

irb_reading_go_time_tracker.rb

irb(main):004:0> data2 = YAML.load(File.read("go_time_tracker.yml"))
=> {"owner"=>"Phillip Dudley", "initialized"=>"2012-10-31 15:50:13.793654 +0000 UTC", "time_data"=>[{"action"=>"start", "time"=>"2012-10-31 15:50:13.793654 +0000 UTC"}, {"action"=>"stop", "time"=>"2012-10-31 16:00:00.000000 +0000 UTC"}]}

If I comment out Line 41 out of go_yaml_practice.go, this works and prints what I want it to. However, the Slice is not being populated.

Changing the time.Time formats in the YAML file is what solved this. The suggestion was from a user on StackOverflow, Putu, who stated that my Time format was wrong. and needed to be this:

"2012-10-31T15:50:13.793654Z"