timer not GC-ed

// why isn't the timer being disposed? see example session after code
using System;
using System.Collections.Generic;
using System.Linq;
using System.Timers;
class Program
{
  static void Main()
  {
    StartTimer();
    Console.WriteLine("Timer started");
    while(true)
    {
      Console.ReadLine();
      GC.Collect();
      GC.WaitForPendingFinalizers();
      GC.Collect();
      Console.WriteLine("GC.Collect complete");
    }
  }
  static void StartTimer()
  {
    var timer = new Timer();
    timer.Interval = 1000;
    timer.Elapsed += (_1, _2) => Console.WriteLine("TICK");
    timer.Start();
  }
}

/*
\> timer.exe
Timer started
TICK
TICK
TICK

GC.Collect complete
TICK
TICK
TICK

GC.Collect complete
TICK
TICK
TICK

GC.Collect complete
TICK
TICK
TICK
TICK
TICK
TICK
TICK
TICK
<Ctrl+C>*/