Collection mariadb55 seems to provide unprefixed RPM providers, which can be also caused by shipping the same libraries as could be shipped outside of SCL environment. Refer to tracker bug #1042837 for more info why this can be problem and check/fix all suspicious provides, please.

General discussions about the issues and why unprefixed symbols/libraries are problem should take place in the tracker bug #1042837.

Components checked for collection mariadb55:
mariadb55
mariadb55-build
mariadb55-mariadb
mariadb55-mariadb-bench
mariadb55-mariadb-devel
mariadb55-mariadb-libs
mariadb55-mariadb-server
mariadb55-mariadb-test
mariadb55-runtime

Potential problems found in collection mariadb55 by components:
-----------------------------------------------------------------
Suspicious provides for package mariadb55-mariadb-server
adt_null.so()(64bit)
auth_0x0100.so()(64bit)
auth_pam.so()(64bit)
auth_socket.so()(64bit)
auth_test_plugin.so()(64bit)
dialog.so()(64bit)
dialog_examples.so()(64bit)
ha_innodb.so()(64bit)
ha_sphinx.so()(64bit)
handlersocket.so()(64bit)
libdaemon_example.so()(64bit)
mypluglib.so()(64bit)
mysql_clear_password.so()(64bit)
mysqld(LIBAIO_0.4)(64bit)
qa_auth_client.so()(64bit)
qa_auth_interface.so()(64bit)
qa_auth_server.so()(64bit)
query_cache_info.so()(64bit)
semisync_master.so()(64bit)
semisync_slave.so()(64bit)
sphinx.so()(64bit)
sql_errlog.so()(64bit)

Suspicious provides for package mariadb55-mariadb-test
perl(My::Config)
perl(My::Config::Group)
perl(My::Config::Group::ENV)
perl(My::Config::Group::OPT)
perl(My::Config::Option)
perl(My::ConfigFactory)
perl(My::CoreDump)
perl(My::File::Path)
perl(My::Find)
perl(My::Handles)
perl(My::Options)
perl(My::Platform)
perl(My::SafeProcess)
perl(My::SafeProcess::Base)
perl(My::Suite)
perl(My::Suite::Archive)
perl(My::Suite::CTest)
perl(My::Suite::Federated)
perl(My::Suite::Main)
perl(My::Suite::Maria)
perl(My::Suite::OQGraph)
perl(My::Suite::Plugins)
perl(My::Suite::Sphinx)
perl(My::SysInfo)
perl(My::Test)
perl(mtr_cases)
perl(mtr_match)
perl(mtr_report)
perl(mtr_results)
perl(mtr_unique)