Deadlock in a Static Constructor

DeadlockStaticConstructor.cs

// Deadlock example in a Static Constructor

using System;
using System.Threading.Tasks;

public static class Program
{
    // Replacing "Log" with "Console.WriteLine" works. Why?
    static Program() => Service.Do(Log);
    public static void Main() {}
    private static void Log(string s) => Console.WriteLine(s);
}

internal static class Service
{
    public static void Do(Action<string> logger) =>
        DoAsync(logger).GetAwaiter().GetResult();

    private static async Task DoAsync(Action<string> logger)
    {
        logger("Start"); 
        await Task.Delay(100); 
        logger("End");
    }
}