Error: static assert:  "Aliases to mutable thread-local data not allowed."
        instantiated from here: spawn!(void function(MySocket), MySocket)

import std.concurrency : receiveOnly, send,
    spawn, Tid, thisTid;
import core.atomic : atomicOp, atomicLoad;
import std.stdio: writeln;

struct Data {
  string t;
}

void thread_func(Data d) {
  d.t.writeln;
}

void main()
{
    Data d;
    d.t = "my_str";
    auto consumer = spawn(&thread_func, d);
}