[DRE-maint] Bug#900160: ruby-eventmachine: FTBFS against openssl 1.1.1

[Sebastian Andrzej Siewior]

Source: ruby-eventmachine
Version: 1.0.7-4
Severity: important
User: pkg-openssl-devel at lists.alioth.debian.org
Usertags: openssl-1.1.1

The new openssl 1.1.1 is currently in experimental [0]. This package
failed to build against this new package [1] while it built fine against
the openssl version currently in unstable [2].
Could you please have a look?

The Error
|TestSSLMethods: 
|  test_ssl_methods:					140136548670336:error:140AB18F:SSL routines:SSL_CTX_use_certificate:ee key too small:../ssl/ssl_rsa.c:310:
|ruby2.5: ssl.cpp:173: SslContext_t::SslContext_t(bool, const string&, const string&): Assertion `e > 0' failed.
|Aborted

is due to:
1.1.1~~pre6-1 changelog):
|   * Increase default security level from 1 to 2. This moves from the 80 bit
|     security level to the 112 bit securit level and will require 2048 bit RSA
|     and DHE keys.

[0] https://lists.debian.org/msgid-search/20180501211400.GA21460@roeckx.be
[1] https://breakpoint.cc/openssl-rebuild/2018-05-03-rebuild-openssl1.1.1-pre6/attempted/ruby-eventmachine_1.0.7-4_amd64-2018-05-01T21%3A04%3A28Z
[2] https://breakpoint.cc/openssl-rebuild/2018-05-03-rebuild-openssl1.1.1-pre6/successful/ruby-eventmachine_1.0.7-4_amd64-2018-05-02T18%3A51%3A11Z

Sebastian