Data race

[pztrn]

WARNING: DATA RACE
Read at 0x00c420018d60 by goroutine 73:
  github.com/pztrn/urtrator/timer.(*Timer).executeTasks()
      /data/.go/workspace/src/github.com/pztrn/urtrator/timer/timer.go:62 +0x341

Previous write at 0x00c420018d60 by main goroutine:
  github.com/pztrn/urtrator/timer.(*Timer).SetTaskNotInProgress-fm()
      /data/.go/workspace/src/github.com/pztrn/urtrator/timer/timer.go:100 +0x1c3
  github.com/pztrn/urtrator/eventer.(*Eventer).reallyLaunchEvent()
      /data/.go/workspace/src/github.com/pztrn/urtrator/eventer/eventer_object.go:73 +0x23b
  github.com/pztrn/urtrator/eventer.(*Eventer).LaunchEvent.func1()
      /data/.go/workspace/src/github.com/pztrn/urtrator/eventer/eventer_object.go:55 +0x5c
  runtime.call32()
      /usr/lib/go/src/runtime/asm_amd64.s:514 +0x47
  reflect.Value.Call()
      /usr/lib/go/src/reflect/value.go:302 +0xc0
  github.com/mattn/go-gtk/glib._go_glib_sourcefunc()
      /data/.go/workspace/src/github.com/mattn/go-gtk/glib/glib.go:1019 +0x1af
  github.com/mattn/go-gtk/glib._cgoexpwrap_fe5c68f3714d__go_glib_sourcefunc()
      github.com/mattn/go-gtk/glib/_obj/_cgo_gotypes.go:1845 +0x38
  runtime.call32()
      /usr/lib/go/src/runtime/asm_amd64.s:514 +0x47
  github.com/mattn/go-gtk/gtk.MainIteration()
      /data/.go/workspace/src/github.com/mattn/go-gtk/gtk/gtk.go:271 +0x2f
  github.com/pztrn/urtrator/eventer.(*Eventer).LaunchEvent()
      /data/.go/workspace/src/github.com/pztrn/urtrator/eventer/eventer_object.go:61 +0x2b4
  github.com/pztrn/urtrator/ui/gtk2.(*MainWindow).serversUpdateCompleted()
      /data/.go/workspace/src/github.com/pztrn/urtrator/ui/gtk2/mainwindow.go:613 +0x1a9
  github.com/pztrn/urtrator/ui/gtk2.(*MainWindow).(github.com/pztrn/urtrator/ui/gtk2.serversUpdateCompleted)-fm()
      /data/.go/workspace/src/github.com/pztrn/urtrator/ui/gtk2/mainwindow_init.go:189 +0x4b
  github.com/pztrn/urtrator/eventer.(*Eventer).reallyLaunchEvent()
      /data/.go/workspace/src/github.com/pztrn/urtrator/eventer/eventer_object.go:73 +0x23b
  github.com/pztrn/urtrator/eventer.(*Eventer).LaunchEvent.func1()
      /data/.go/workspace/src/github.com/pztrn/urtrator/eventer/eventer_object.go:55 +0x5c
  runtime.call32()
      /usr/lib/go/src/runtime/asm_amd64.s:514 +0x47
  reflect.Value.Call()
      /usr/lib/go/src/reflect/value.go:302 +0xc0
  github.com/mattn/go-gtk/glib._go_glib_sourcefunc()
      /data/.go/workspace/src/github.com/mattn/go-gtk/glib/glib.go:1019 +0x1af
  github.com/mattn/go-gtk/glib._cgoexpwrap_fe5c68f3714d__go_glib_sourcefunc()
      github.com/mattn/go-gtk/glib/_obj/_cgo_gotypes.go:1845 +0x38
  runtime.call32()
      /usr/lib/go/src/runtime/asm_amd64.s:514 +0x47
  github.com/mattn/go-gtk/gtk.Main()
      /data/.go/workspace/src/github.com/mattn/go-gtk/gtk/gtk.go:261 +0x2f
  github.com/pztrn/urtrator/ui/gtk2.(*MainWindow).Initialize()
      /data/.go/workspace/src/github.com/pztrn/urtrator/ui/gtk2/mainwindow_init.go:179 +0x1b2d
  main.main()
      /data/.go/workspace/src/github.com/pztrn/urtrator/urtrator.go:33 +0x294

Goroutine 73 (running) created at:
  github.com/pztrn/urtrator/timer.(*Timer).Initialize.func1()
      /data/.go/workspace/src/github.com/pztrn/urtrator/timer/timer.go:96 +0xca