Unhandled exception in spawn: Error writing to socket: Broken pipe (Errno)
  from src/socket.cr:77:13 in 'unbuffered_write'
  from src/io/buffered.cr:123:14 in 'write'
  from src/io.cr:853:5 in 'write_byte'
  from src/io/buffered.cr:156:14 in 'write_byte'
  from src/char.cr:767:9 in 'to_s'
  from src/io.cr:184:5 in '<<'
  from src/http/client/response.cr:63:5 in 'to_io'
  from spec/std/http/client/client_spec.cr:13:7 in '->'
  from src/fiber.cr:255:3 in 'run'
  from src/fiber.cr:72:34 in '->'
  from ???
...........................................................F......F......*.........................................................................................................................................................................................................................................................*............................................................................................................................................................................................................................................................................................................................................................................................................................Invalid memory access (signal 11) at address 0x40
[0x5629f0d2e8a6] *CallStack::print_backtrace:Int32 +118
[0x5629f061a8f9] __crystal_sigfault_handler +217
[0x7f3991a7f802] ???
make: *** [Makefile:86: spec] Error 11
>>> ERROR: crystal: check failed