Test failure with Golang 1.13

[eclipseo]

Go 1.13 on Fedora Rawhide:

Testing    in: /builddir/build/BUILD/go-syslog-a127d826d6c27489d377b3c080bd256d8f8093a6/_build/src
         PATH: /builddir/build/BUILD/go-syslog-a127d826d6c27489d377b3c080bd256d8f8093a6/_build/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/sbin
       GOPATH: /builddir/build/BUILD/go-syslog-a127d826d6c27489d377b3c080bd256d8f8093a6/_build:/usr/share/gocode
  GO111MODULE: off
      command: go test -buildmode pie -compiler gc -ldflags "-X gopkg.in/mcuadros/go-syslog.v2/version=2.2.1 -X gopkg.in/mcuadros/go-syslog.v2/version.commit=a127d826d6c27489d377b3c080bd256d8f8093a6 -extldflags '-Wl,-z,relro -Wl,--as-needed  -Wl,-z,now -specs=/usr/lib/rpm/redhat/redhat-hardened-ld '"
      testing: gopkg.in/mcuadros/go-syslog.v2
gopkg.in/mcuadros/go-syslog.v2
----------------------------------------------------------------------
FAIL: servertls_test.go:57: ServerSuite.TestTLS
servertls_test.go:80:
    c.Check(handler.LastLogParts["hostname"], Equals, "hostname")
... obtained = nil
... expected string = "hostname"
... runtime error: invalid memory address or nil pointer dereference
servertls_test.go:81:
    c.Check(handler.LastLogParts["tag"], Equals, "tag")
... obtained = nil
... expected string = "tag"
... runtime error: invalid memory address or nil pointer dereference
servertls_test.go:82:
    c.Check(handler.LastLogParts["content"], Equals, "content")
... obtained = nil
... expected string = "content"
... runtime error: invalid memory address or nil pointer dereference
servertls_test.go:83:
    c.Check(handler.LastLogParts["tls_peer"], Equals, "dummycert1")
... obtained = nil
... expected string = "dummycert1"
... runtime error: invalid memory address or nil pointer dereference
servertls_test.go:84:
    c.Check(handler.LastMessageLength, Equals, int64(len(exampleSyslog)))
... obtained int64 = 0
... expected int64 = 46
OOPS: 14 passed, 1 FAILED
--- FAIL: Test (2.40s)
FAIL
exit status 1
FAIL	gopkg.in/mcuadros/go-syslog.v2	2.406s

[eclipseo]

It seems to be related to TLS 1.3 being the default, by disabling TLS 1.3 the test passes. Problem is the option to disable TLS 1.3 will be removed in Golang 1.14.

[eclipseo]

Golang 1.14 is here and the tests are still failing.