.NET Core Exceptions memory leak repro

Program.cs

using System;
using System.Threading.Tasks;

namespace ConsoleApp2189
{
    public static class Program
    {
        public static void Main(string[] args)
        {
            while (true)
            {
                Task.Run(() => TopLevel());
            }
        }

        public static async Task<string> TopLevel()
        {
            try
            {
                return await A();
            }
            catch (Exception e)
            {
                var s = e.ToString();
                // Do nothing - we're just interested in allocations
                return s;
            }
        }

        public static async Task<string> A() => await B();
        public static async Task<string> B() => await C();
        public static async Task<string> C() => await D();
        public static async Task<string> D() => await E();
        public static async Task<string> E() => await F();
        public static async Task<string> F() => await G();
        public static async Task<string> G() => await H();
        public static async Task<string> H() => await I();
        public static async Task<string> I() => await J();
        public static async Task<string> J() => await K();
        public static async Task<string> K() => await L();
        public static async Task<string> L() => await M();
        public static async Task<string> M() => await N();
        public static async Task<string> N() => await O();
        public static async Task<string> O() => await P();
        public static async Task<string> P() => await Q();
        public static async Task<string> Q() => await R();
        public static async Task<string> R() => await S();
        public static async Task<string> S() => await T();
        public static async Task<string> T() => await U();
        public static async Task<string> U() => await V();
        public static async Task<string> V() => await W();
        public static async Task<string> W() => await X();
        public static async Task<string> X() => await Y();
        public static async Task<string> Y() => await Z();
        public static async Task<string> Z() => throw new Exception("Well this is isn't very efficient.");
    }
}