==================
WARNING: DATA RACE
Write at 0x00c42049d300 by goroutine 26:
  github.com/mholt/caddy/caddytls.standaloneTLSTicketKeyRotation()
      /home/tw/golib/src/github.com/mholt/caddy/caddytls/crypto.go:230 +0x698

Previous read at 0x00c42049d300 by goroutine 25:
  github.com/mholt/caddy/caddytls.TestStandaloneTLSTicketKeyRotation()
      /home/tw/golib/src/github.com/mholt/caddy/caddytls/crypto_test.go:113 +0x413
  testing.tRunner()
      /home/tw/goroot/src/testing/testing.go:610 +0xc9

Goroutine 26 (running) created at:
  github.com/mholt/caddy/caddytls.TestStandaloneTLSTicketKeyRotation()
      /home/tw/golib/src/github.com/mholt/caddy/caddytls/crypto_test.go:101 +0x2a4
  testing.tRunner()
      /home/tw/goroot/src/testing/testing.go:610 +0xc9

Goroutine 25 (running) created at:
  testing.(*T).Run()
      /home/tw/goroot/src/testing/testing.go:646 +0x52f
  testing.RunTests.func1()
      /home/tw/goroot/src/testing/testing.go:793 +0xb9
  testing.tRunner()
      /home/tw/goroot/src/testing/testing.go:610 +0xc9
  testing.RunTests()
      /home/tw/goroot/src/testing/testing.go:799 +0x4b5
  testing.(*M).Run()
      /home/tw/goroot/src/testing/testing.go:743 +0x12f
  github.com/mholt/caddy/caddytls.TestMain()
      /home/tw/golib/src/github.com/mholt/caddy/caddytls/setup_test.go:27 +0x133
  main.main()
      github.com/mholt/caddy/caddytls/_test/_testmain.go:116 +0x1b1
==================
==================
WARNING: DATA RACE
Write at 0x00c4204aa6c0 by goroutine 26:
  github.com/mholt/caddy/caddytls.TestStandaloneTLSTicketKeyRotation.func2()
      /home/tw/golib/src/github.com/mholt/caddy/caddytls/crypto_test.go:93 +0x56
  github.com/mholt/caddy/caddytls.standaloneTLSTicketKeyRotation()
      /home/tw/golib/src/github.com/mholt/caddy/caddytls/crypto.go:233 +0x638

Previous read at 0x00c4204aa6c0 by goroutine 25:
  github.com/mholt/caddy/caddytls.TestStandaloneTLSTicketKeyRotation()
      /home/tw/golib/src/github.com/mholt/caddy/caddytls/crypto_test.go:108 +0x391
  testing.tRunner()
      /home/tw/goroot/src/testing/testing.go:610 +0xc9

Goroutine 26 (running) created at:
  github.com/mholt/caddy/caddytls.TestStandaloneTLSTicketKeyRotation()
      /home/tw/golib/src/github.com/mholt/caddy/caddytls/crypto_test.go:101 +0x2a4
  testing.tRunner()
      /home/tw/goroot/src/testing/testing.go:610 +0xc9

Goroutine 25 (running) created at:
  testing.(*T).Run()
      /home/tw/goroot/src/testing/testing.go:646 +0x52f
  testing.RunTests.func1()
      /home/tw/goroot/src/testing/testing.go:793 +0xb9
  testing.tRunner()
      /home/tw/goroot/src/testing/testing.go:610 +0xc9
  testing.RunTests()
      /home/tw/goroot/src/testing/testing.go:799 +0x4b5
  testing.(*M).Run()
      /home/tw/goroot/src/testing/testing.go:743 +0x12f
  github.com/mholt/caddy/caddytls.TestMain()
      /home/tw/golib/src/github.com/mholt/caddy/caddytls/setup_test.go:27 +0x133
  main.main()
      github.com/mholt/caddy/caddytls/_test/_testmain.go:116 +0x1b1
==================
Signed-off-by: Tw <tw19881113@gmail.com>