Description of problem:
I found few memory related bugs as part preparing reproducer for BZ1628056.

Version-Release number of selected component (if applicable):
sh$ rpm -q dnf libdnf python3-libdnf
dnf-3.5.1-1.fc30.noarch
libdnf-0.19.1-1.fc30.x86_64
python3-libdnf-0.19.1-1.fc30.x86_64

How reproducible:
Deterministic

Steps to Reproduce:
1. dnf install -y valgrind dnf-plugins-core
2. dnf debuginfo-install glibc libdnf python3-libdnf
3. valgrind dnf update -y

Actual results:
==92== Memcheck, a memory error detector                                                                                                                                                   ==92== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
==92== Using Valgrind-3.13.0 and LibVEX; rerun with -h for copyright info
==92== Command: /usr/bin/dnf update -y
==92==
==92== Invalid read of size 1
==92==    at 0x483B8C6: __strlen_sse2 (vg_replace_strmem.c:460)
==92==    by 0x6E4B918: length (char_traits.h:320)
==92==    by 0x6E4B918: append (basic_string.h:1257)
==92==    by 0x6E4B918: std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > std::operator+<char, std::char_traits<char>, std::allocator<char> >(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&&, char const*) (basic_string.h:6021)
==92==    by 0x6DF5636: _wrap_OptionBinds_at__SWIG_0 (confPYTHON_wrap.cxx:24613)
==92==    by 0x6DF5636: _wrap_OptionBinds_at.cold.722 (confPYTHON_wrap.cxx:24700)
==92==    by 0x4B43FB2: PyCFunction_Call (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BE3F82: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B236C7: _PyEval_EvalCodeWithName (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6B1B0: _PyFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BE2AF8: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B236C7: _PyEval_EvalCodeWithName (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6B1B0: _PyFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BE2AF8: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6B009: _PyFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==  Address 0x620e050 is 0 bytes inside a block of size 69 free'd
==92==    at 0x4839EFC: operator delete(void*) (vg_replace_malloc.c:576)
==92==    by 0x6FB6684: UnknownInlinedFun (new_allocator.h:125)
==92==    by 0x6FB6684: UnknownInlinedFun (alloc_traits.h:462)
==92==    by 0x6FB6684: UnknownInlinedFun (basic_string.h:226)
==92==    by 0x6FB6684: UnknownInlinedFun (basic_string.h:221)
==92==    by 0x6FB6684: UnknownInlinedFun (basic_string.h:657)
==92==    by 0x6FB6684: libdnf::OptionBinds::OutOfRange::what() const (Config.cpp:72)
==92==    by 0x6DF5611: _wrap_OptionBinds_at__SWIG_0 (confPYTHON_wrap.cxx:24613)
==92==    by 0x6DF5611: _wrap_OptionBinds_at.cold.722 (confPYTHON_wrap.cxx:24700)
==92==    by 0x4B43FB2: PyCFunction_Call (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BE3F82: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B236C7: _PyEval_EvalCodeWithName (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6B1B0: _PyFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BE2AF8: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B236C7: _PyEval_EvalCodeWithName (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6B1B0: _PyFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BE2AF8: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6B009: _PyFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==  Block was alloc'd at
==92==    at 0x4838E86: operator new(unsigned long) (vg_replace_malloc.c:334)
==92==    by 0x6F301BC: UnknownInlinedFun (basic_string.tcc:317)
==92==    by 0x6F301BC: std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_replace(unsigned long, unsigned long, char const*, unsigned long) (basic_string.tcc:466)
==92==    by 0x6FB722D: UnknownInlinedFun (basic_string.h:1923)
==92==    by 0x6FB722D: UnknownInlinedFun (basic_string.h:2112)
==92==    by 0x6FB722D: UnknownInlinedFun (basic_string.h:1462)
==92==    by 0x6FB722D: str (sstream:174)
==92==    by 0x6FB722D: str (sstream:639)
==92==    by 0x6FB722D: std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > tinyformat::format<char const*>(char const*, char const* const&) (tinyformat.hpp:1084)
==92==    by 0x6FB666E: libdnf::OptionBinds::OutOfRange::what() const (Config.cpp:72)
==92==    by 0x6DF5611: _wrap_OptionBinds_at__SWIG_0 (confPYTHON_wrap.cxx:24613)
==92==    by 0x6DF5611: _wrap_OptionBinds_at.cold.722 (confPYTHON_wrap.cxx:24700)
==92==    by 0x4B43FB2: PyCFunction_Call (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BE3F82: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B236C7: _PyEval_EvalCodeWithName (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6B1B0: _PyFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BE2AF8: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B236C7: _PyEval_EvalCodeWithName (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6B1B0: _PyFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==
==92== Invalid read of size 1
==92==    at 0x483B8D4: __strlen_sse2 (vg_replace_strmem.c:460)
==92==    by 0x6E4B918: length (char_traits.h:320)
==92==    by 0x6E4B918: append (basic_string.h:1257)
==92==    by 0x6E4B918: std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > std::operator+<char, std::char_traits<char>, std::allocator<char> >(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&&, char const*) (basic_string.h:6021)
==92==    by 0x6DF5636: _wrap_OptionBinds_at__SWIG_0 (confPYTHON_wrap.cxx:24613)
==92==    by 0x6DF5636: _wrap_OptionBinds_at.cold.722 (confPYTHON_wrap.cxx:24700)
==92==    by 0x4B43FB2: PyCFunction_Call (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BE3F82: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B236C7: _PyEval_EvalCodeWithName (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6B1B0: _PyFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BE2AF8: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B236C7: _PyEval_EvalCodeWithName (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6B1B0: _PyFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BE2AF8: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6B009: _PyFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==  Address 0x620e051 is 1 bytes inside a block of size 69 free'd
==92==    at 0x4839EFC: operator delete(void*) (vg_replace_malloc.c:576)
==92==    by 0x6FB6684: UnknownInlinedFun (new_allocator.h:125)
==92==    by 0x6FB6684: UnknownInlinedFun (alloc_traits.h:462)
==92==    by 0x6FB6684: UnknownInlinedFun (basic_string.h:226)
==92==    by 0x6FB6684: UnknownInlinedFun (basic_string.h:221)
==92==    by 0x6FB6684: UnknownInlinedFun (basic_string.h:657)
==92==    by 0x6FB6684: libdnf::OptionBinds::OutOfRange::what() const (Config.cpp:72)
==92==    by 0x6DF5611: _wrap_OptionBinds_at__SWIG_0 (confPYTHON_wrap.cxx:24613)
==92==    by 0x6DF5611: _wrap_OptionBinds_at.cold.722 (confPYTHON_wrap.cxx:24700)
==92==    by 0x4B43FB2: PyCFunction_Call (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BE3F82: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B236C7: _PyEval_EvalCodeWithName (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6B1B0: _PyFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BE2AF8: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B236C7: _PyEval_EvalCodeWithName (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6B1B0: _PyFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BE2AF8: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6B009: _PyFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==  Block was alloc'd at
==92==    at 0x4838E86: operator new(unsigned long) (vg_replace_malloc.c:334)
==92==    by 0x6F301BC: UnknownInlinedFun (basic_string.tcc:317)
==92==    by 0x6F301BC: std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_replace(unsigned long, unsigned long, char const*, unsigned long) (basic_string.tcc:466)
==92==    by 0x6FB722D: UnknownInlinedFun (basic_string.h:1923)
==92==    by 0x6FB722D: UnknownInlinedFun (basic_string.h:2112)
==92==    by 0x6FB722D: UnknownInlinedFun (basic_string.h:1462)
==92==    by 0x6FB722D: str (sstream:174)
==92==    by 0x6FB722D: str (sstream:639)
==92==    by 0x6FB722D: std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > tinyformat::format<char const*>(char const*, char const* const&) (tinyformat.hpp:1084)
==92==    by 0x6FB666E: libdnf::OptionBinds::OutOfRange::what() const (Config.cpp:72)
==92==    by 0x6DF5611: _wrap_OptionBinds_at__SWIG_0 (confPYTHON_wrap.cxx:24613)
==92==    by 0x6DF5611: _wrap_OptionBinds_at.cold.722 (confPYTHON_wrap.cxx:24700)
==92==    by 0x4B43FB2: PyCFunction_Call (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BE3F82: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B236C7: _PyEval_EvalCodeWithName (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6B1B0: _PyFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BE2AF8: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B236C7: _PyEval_EvalCodeWithName (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6B1B0: _PyFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==
==92== Invalid read of size 2
==92==    at 0x483CCA0: memcpy.5 (vg_replace_strmem.c:1021)
==92==    by 0x6E4B87F: copy (char_traits.h:350)
==92==    by 0x6E4B87F: _S_copy (basic_string.h:340)
==92==    by 0x6E4B87F: _M_mutate (basic_string.tcc:322)
==92==    by 0x6E4B87F: std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_append(char const*, unsigned long) (basic_string.tcc:370)
==92==    by 0x6E4B939: append (basic_string.h:1259)
==92==    by 0x6E4B939: std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > std::operator+<char, std::char_traits<char>, std::allocator<char> >(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&&, char const*) (basic_string.h:6021)
==92==    by 0x6DF5636: _wrap_OptionBinds_at__SWIG_0 (confPYTHON_wrap.cxx:24613)
==92==    by 0x6DF5636: _wrap_OptionBinds_at.cold.722 (confPYTHON_wrap.cxx:24700)
==92==    by 0x4B43FB2: PyCFunction_Call (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BE3F82: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B236C7: _PyEval_EvalCodeWithName (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6B1B0: _PyFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BE2AF8: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B236C7: _PyEval_EvalCodeWithName (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6B1B0: _PyFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BE2AF8: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==  Address 0x620e050 is 0 bytes inside a block of size 69 free'd
==92==    at 0x4839EFC: operator delete(void*) (vg_replace_malloc.c:576)
==92==    by 0x6FB6684: UnknownInlinedFun (new_allocator.h:125)
==92==    by 0x6FB6684: UnknownInlinedFun (alloc_traits.h:462)
==92==    by 0x6FB6684: UnknownInlinedFun (basic_string.h:226)
==92==    by 0x6FB6684: UnknownInlinedFun (basic_string.h:221)
==92==    by 0x6FB6684: UnknownInlinedFun (basic_string.h:657)
==92==    by 0x6FB6684: libdnf::OptionBinds::OutOfRange::what() const (Config.cpp:72)
==92==    by 0x6DF5611: _wrap_OptionBinds_at__SWIG_0 (confPYTHON_wrap.cxx:24613)
==92==    by 0x6DF5611: _wrap_OptionBinds_at.cold.722 (confPYTHON_wrap.cxx:24700)
==92==    by 0x4B43FB2: PyCFunction_Call (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BE3F82: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B236C7: _PyEval_EvalCodeWithName (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6B1B0: _PyFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BE2AF8: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B236C7: _PyEval_EvalCodeWithName (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6B1B0: _PyFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BE2AF8: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6B009: _PyFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==  Block was alloc'd at
==92==    at 0x4838E86: operator new(unsigned long) (vg_replace_malloc.c:334)
==92==    by 0x6F301BC: UnknownInlinedFun (basic_string.tcc:317)
==92==    by 0x6F301BC: std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_replace(unsigned long, unsigned long, char const*, unsigned long) (basic_string.tcc:466)
==92==    by 0x6FB722D: UnknownInlinedFun (basic_string.h:1923)
==92==    by 0x6FB722D: UnknownInlinedFun (basic_string.h:2112)
==92==    by 0x6FB722D: UnknownInlinedFun (basic_string.h:1462)
==92==    by 0x6FB722D: str (sstream:174)
==92==    by 0x6FB722D: str (sstream:639)
==92==    by 0x6FB722D: std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > tinyformat::format<char const*>(char const*, char const* const&) (tinyformat.hpp:1084)
==92==    by 0x6FB666E: libdnf::OptionBinds::OutOfRange::what() const (Config.cpp:72)
==92==    by 0x6DF5611: _wrap_OptionBinds_at__SWIG_0 (confPYTHON_wrap.cxx:24613)
==92==    by 0x6DF5611: _wrap_OptionBinds_at.cold.722 (confPYTHON_wrap.cxx:24700)
==92==    by 0x4B43FB2: PyCFunction_Call (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BE3F82: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B236C7: _PyEval_EvalCodeWithName (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6B1B0: _PyFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BE2AF8: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B236C7: _PyEval_EvalCodeWithName (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6B1B0: _PyFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==
==92== Invalid read of size 2
==92==    at 0x483CCAF: memcpy.5 (vg_replace_strmem.c:1021)
==92==    by 0x6E4B87F: copy (char_traits.h:350)
==92==    by 0x6E4B87F: _S_copy (basic_string.h:340)
==92==    by 0x6E4B87F: _M_mutate (basic_string.tcc:322)
==92==    by 0x6E4B87F: std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_append(char const*, unsigned long) (basic_string.tcc:370)
==92==    by 0x6E4B939: append (basic_string.h:1259)
==92==    by 0x6E4B939: std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > std::operator+<char, std::char_traits<char>, std::allocator<char> >(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&&, char const*) (basic_string.h:6021)
==92==    by 0x6DF5636: _wrap_OptionBinds_at__SWIG_0 (confPYTHON_wrap.cxx:24613)
==92==    by 0x6DF5636: _wrap_OptionBinds_at.cold.722 (confPYTHON_wrap.cxx:24700)
==92==    by 0x4B43FB2: PyCFunction_Call (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BE3F82: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B236C7: _PyEval_EvalCodeWithName (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6B1B0: _PyFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BE2AF8: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B236C7: _PyEval_EvalCodeWithName (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6B1B0: _PyFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BE2AF8: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==  Address 0x620e054 is 4 bytes inside a block of size 69 free'd
==92==    at 0x4839EFC: operator delete(void*) (vg_replace_malloc.c:576)
==92==    by 0x6FB6684: UnknownInlinedFun (new_allocator.h:125)
==92==    by 0x6FB6684: UnknownInlinedFun (alloc_traits.h:462)
==92==    by 0x6FB6684: UnknownInlinedFun (basic_string.h:226)
==92==    by 0x6FB6684: UnknownInlinedFun (basic_string.h:221)
==92==    by 0x6FB6684: UnknownInlinedFun (basic_string.h:657)
==92==    by 0x6FB6684: libdnf::OptionBinds::OutOfRange::what() const (Config.cpp:72)
==92==    by 0x6DF5611: _wrap_OptionBinds_at__SWIG_0 (confPYTHON_wrap.cxx:24613)
==92==    by 0x6DF5611: _wrap_OptionBinds_at.cold.722 (confPYTHON_wrap.cxx:24700)
==92==    by 0x4B43FB2: PyCFunction_Call (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BE3F82: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B236C7: _PyEval_EvalCodeWithName (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6B1B0: _PyFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BE2AF8: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B236C7: _PyEval_EvalCodeWithName (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6B1B0: _PyFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BE2AF8: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6B009: _PyFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==  Block was alloc'd at
==92==    at 0x4838E86: operator new(unsigned long) (vg_replace_malloc.c:334)
==92==    by 0x6F301BC: UnknownInlinedFun (basic_string.tcc:317)
==92==    by 0x6F301BC: std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_replace(unsigned long, unsigned long, char const*, unsigned long) (basic_string.tcc:466)
==92==    by 0x6FB722D: UnknownInlinedFun (basic_string.h:1923)
==92==    by 0x6FB722D: UnknownInlinedFun (basic_string.h:2112)
==92==    by 0x6FB722D: UnknownInlinedFun (basic_string.h:1462)
==92==    by 0x6FB722D: str (sstream:174)
==92==    by 0x6FB722D: str (sstream:639)
==92==    by 0x6FB722D: std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > tinyformat::format<char const*>(char const*, char const* const&) (tinyformat.hpp:1084)
==92==    by 0x6FB666E: libdnf::OptionBinds::OutOfRange::what() const (Config.cpp:72)
==92==    by 0x6DF5611: _wrap_OptionBinds_at__SWIG_0 (confPYTHON_wrap.cxx:24613)
==92==    by 0x6DF5611: _wrap_OptionBinds_at.cold.722 (confPYTHON_wrap.cxx:24700)
==92==    by 0x4B43FB2: PyCFunction_Call (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BE3F82: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B236C7: _PyEval_EvalCodeWithName (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6B1B0: _PyFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BE2AF8: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B236C7: _PyEval_EvalCodeWithName (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6B1B0: _PyFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==
Last metadata expiration check: 0:08:01 ago on Wed 12 Sep 2018 07:08:38 AM UTC.

==92== Invalid read of size 1
==92==    at 0x483B8C6: __strlen_sse2 (vg_replace_strmem.c:460)
==92==    by 0x6FCAFD3: libdnf::copyFilterChar(char const*, int) (query.cpp:509)
==92==    by 0x6FCE34E: libdnf::Filter::Filter(int, int, char const**) (query.cpp:599)
==92==    by 0x6FD058E: libdnf::Query::addFilter(int, int, char const**) (query.cpp:868)
==92==    by 0x9ED8CE3: filter_add (query-py.cpp:371)
==92==    by 0x9ED8CE3: filter_internal(libdnf::Query*, libdnf::Selector*, _object*, _object*, _object*) (query-py.cpp:475)
==92==    by 0x9ED90EC: filterm(_QueryObject*, _object*, _object*) (query-py.cpp:521)
==92==    by 0x4B6B9BD: _PyMethodDef_RawFastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6BA1F: _PyCFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BE36F2: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B236C7: _PyEval_EvalCodeWithName (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6B1B0: _PyFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BDD840: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==  Address 0x5b2c570 is 32 bytes inside a block of size 36 free'd
==92==    at 0x4839A0C: free (vg_replace_malloc.c:530)
==92==    by 0x9ED3C9B: pySequenceConverter(_object*) (iutil-py.cpp:292)
==92==    by 0x9ED8CC7: filter_add (query-py.cpp:367)
==92==    by 0x9ED8CC7: filter_internal(libdnf::Query*, libdnf::Selector*, _object*, _object*, _object*) (query-py.cpp:475)
==92==    by 0x9ED90EC: filterm(_QueryObject*, _object*, _object*) (query-py.cpp:521)
==92==    by 0x4B6B9BD: _PyMethodDef_RawFastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6BA1F: _PyCFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BE36F2: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B236C7: _PyEval_EvalCodeWithName (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6B1B0: _PyFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BDD840: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6B009: _PyFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BDD9FB: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==  Block was alloc'd at
==92==    at 0x483880B: malloc (vg_replace_malloc.c:299)
==92==    by 0x4B05047: PyObject_Malloc (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B5BB36: PyBytes_FromStringAndSize (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B1970C: PyUnicode_AsEncodedString (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x9EDD7B2: pycomp_get_string_from_unicode (pycomp.cpp:31)
==92==    by 0x9EDD7B2: PycompString::PycompString(_object*) (pycomp.cpp:43)
==92==    by 0x9ED3BD7: pySequenceConverter(_object*) (iutil-py.cpp:298)
==92==    by 0x9ED8CC7: filter_add (query-py.cpp:367)
==92==    by 0x9ED8CC7: filter_internal(libdnf::Query*, libdnf::Selector*, _object*, _object*, _object*) (query-py.cpp:475)
==92==    by 0x9ED90EC: filterm(_QueryObject*, _object*, _object*) (query-py.cpp:521)
==92==    by 0x4B6B9BD: _PyMethodDef_RawFastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6BA1F: _PyCFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BE36F2: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B236C7: _PyEval_EvalCodeWithName (in /usr/lib64/libpython3.7m.so.1.0)
==92==
==92== Invalid read of size 1
==92==    at 0x483B8D4: __strlen_sse2 (vg_replace_strmem.c:460)
==92==    by 0x6FCAFD3: libdnf::copyFilterChar(char const*, int) (query.cpp:509)
==92==    by 0x6FCE34E: libdnf::Filter::Filter(int, int, char const**) (query.cpp:599)
==92==    by 0x6FD058E: libdnf::Query::addFilter(int, int, char const**) (query.cpp:868)
==92==    by 0x9ED8CE3: filter_add (query-py.cpp:371)
==92==    by 0x9ED8CE3: filter_internal(libdnf::Query*, libdnf::Selector*, _object*, _object*, _object*) (query-py.cpp:475)
==92==    by 0x9ED90EC: filterm(_QueryObject*, _object*, _object*) (query-py.cpp:521)
==92==    by 0x4B6B9BD: _PyMethodDef_RawFastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6BA1F: _PyCFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BE36F2: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B236C7: _PyEval_EvalCodeWithName (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6B1B0: _PyFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BDD840: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==  Address 0x5b2c571 is 33 bytes inside a block of size 36 free'd
==92==    at 0x4839A0C: free (vg_replace_malloc.c:530)
==92==    by 0x9ED3C9B: pySequenceConverter(_object*) (iutil-py.cpp:292)
==92==    by 0x9ED8CC7: filter_add (query-py.cpp:367)
==92==    by 0x9ED8CC7: filter_internal(libdnf::Query*, libdnf::Selector*, _object*, _object*, _object*) (query-py.cpp:475)
==92==    by 0x9ED90EC: filterm(_QueryObject*, _object*, _object*) (query-py.cpp:521)
==92==    by 0x4B6B9BD: _PyMethodDef_RawFastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6BA1F: _PyCFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BE36F2: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B236C7: _PyEval_EvalCodeWithName (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6B1B0: _PyFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BDD840: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6B009: _PyFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BDD9FB: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==  Block was alloc'd at
==92==    at 0x483880B: malloc (vg_replace_malloc.c:299)
==92==    by 0x4B05047: PyObject_Malloc (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B5BB36: PyBytes_FromStringAndSize (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B1970C: PyUnicode_AsEncodedString (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x9EDD7B2: pycomp_get_string_from_unicode (pycomp.cpp:31)
==92==    by 0x9EDD7B2: PycompString::PycompString(_object*) (pycomp.cpp:43)
==92==    by 0x9ED3BD7: pySequenceConverter(_object*) (iutil-py.cpp:298)
==92==    by 0x9ED8CC7: filter_add (query-py.cpp:367)
==92==    by 0x9ED8CC7: filter_internal(libdnf::Query*, libdnf::Selector*, _object*, _object*, _object*) (query-py.cpp:475)
==92==    by 0x9ED90EC: filterm(_QueryObject*, _object*, _object*) (query-py.cpp:521)
==92==    by 0x4B6B9BD: _PyMethodDef_RawFastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6BA1F: _PyCFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BE36F2: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B236C7: _PyEval_EvalCodeWithName (in /usr/lib64/libpython3.7m.so.1.0)
==92==
==92== Invalid read of size 1
==92==    at 0x483B9B4: strcpy (vg_replace_strmem.c:510)
==92==    by 0x6FCB004: UnknownInlinedFun (string_fortified.h:90)
==92==    by 0x6FCB004: libdnf::copyFilterChar(char const*, int) (query.cpp:516)
==92==    by 0x6FCE34E: libdnf::Filter::Filter(int, int, char const**) (query.cpp:599)
==92==    by 0x6FD058E: libdnf::Query::addFilter(int, int, char const**) (query.cpp:868)
==92==    by 0x9ED8CE3: filter_add (query-py.cpp:371)
==92==    by 0x9ED8CE3: filter_internal(libdnf::Query*, libdnf::Selector*, _object*, _object*, _object*) (query-py.cpp:475)
==92==    by 0x9ED90EC: filterm(_QueryObject*, _object*, _object*) (query-py.cpp:521)
==92==    by 0x4B6B9BD: _PyMethodDef_RawFastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6BA1F: _PyCFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BE36F2: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B236C7: _PyEval_EvalCodeWithName (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6B1B0: _PyFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BDD840: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==  Address 0x5b2c570 is 32 bytes inside a block of size 36 free'd
==92==    at 0x4839A0C: free (vg_replace_malloc.c:530)
==92==    by 0x9ED3C9B: pySequenceConverter(_object*) (iutil-py.cpp:292)
==92==    by 0x9ED8CC7: filter_add (query-py.cpp:367)
==92==    by 0x9ED8CC7: filter_internal(libdnf::Query*, libdnf::Selector*, _object*, _object*, _object*) (query-py.cpp:475)
==92==    by 0x9ED90EC: filterm(_QueryObject*, _object*, _object*) (query-py.cpp:521)
==92==    by 0x4B6B9BD: _PyMethodDef_RawFastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6BA1F: _PyCFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BE36F2: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B236C7: _PyEval_EvalCodeWithName (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6B1B0: _PyFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BDD840: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6B009: _PyFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BDD9FB: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==  Block was alloc'd at
==92==    at 0x483880B: malloc (vg_replace_malloc.c:299)
==92==    by 0x4B05047: PyObject_Malloc (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B5BB36: PyBytes_FromStringAndSize (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B1970C: PyUnicode_AsEncodedString (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x9EDD7B2: pycomp_get_string_from_unicode (pycomp.cpp:31)
==92==    by 0x9EDD7B2: PycompString::PycompString(_object*) (pycomp.cpp:43)
==92==    by 0x9ED3BD7: pySequenceConverter(_object*) (iutil-py.cpp:298)
==92==    by 0x9ED8CC7: filter_add (query-py.cpp:367)
==92==    by 0x9ED8CC7: filter_internal(libdnf::Query*, libdnf::Selector*, _object*, _object*, _object*) (query-py.cpp:475)
==92==    by 0x9ED90EC: filterm(_QueryObject*, _object*, _object*) (query-py.cpp:521)
==92==    by 0x4B6B9BD: _PyMethodDef_RawFastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6BA1F: _PyCFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BE36F2: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B236C7: _PyEval_EvalCodeWithName (in /usr/lib64/libpython3.7m.so.1.0)
==92==
==92== Invalid read of size 1
==92==    at 0x483B9D3: strcpy (vg_replace_strmem.c:510)
==92==    by 0x6FCB004: UnknownInlinedFun (string_fortified.h:90)
==92==    by 0x6FCB004: libdnf::copyFilterChar(char const*, int) (query.cpp:516)
==92==    by 0x6FCE34E: libdnf::Filter::Filter(int, int, char const**) (query.cpp:599)
==92==    by 0x6FD058E: libdnf::Query::addFilter(int, int, char const**) (query.cpp:868)
==92==    by 0x9ED8CE3: filter_add (query-py.cpp:371)
==92==    by 0x9ED8CE3: filter_internal(libdnf::Query*, libdnf::Selector*, _object*, _object*, _object*) (query-py.cpp:475)
==92==    by 0x9ED90EC: filterm(_QueryObject*, _object*, _object*) (query-py.cpp:521)
==92==    by 0x4B6B9BD: _PyMethodDef_RawFastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6BA1F: _PyCFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BE36F2: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B236C7: _PyEval_EvalCodeWithName (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6B1B0: _PyFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BDD840: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==  Address 0x5b2c571 is 33 bytes inside a block of size 36 free'd
==92==    at 0x4839A0C: free (vg_replace_malloc.c:530)
==92==    by 0x9ED3C9B: pySequenceConverter(_object*) (iutil-py.cpp:292)
==92==    by 0x9ED8CC7: filter_add (query-py.cpp:367)
==92==    by 0x9ED8CC7: filter_internal(libdnf::Query*, libdnf::Selector*, _object*, _object*, _object*) (query-py.cpp:475)
==92==    by 0x9ED90EC: filterm(_QueryObject*, _object*, _object*) (query-py.cpp:521)
==92==    by 0x4B6B9BD: _PyMethodDef_RawFastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6BA1F: _PyCFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BE36F2: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B236C7: _PyEval_EvalCodeWithName (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6B1B0: _PyFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BDD840: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6B009: _PyFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BDD9FB: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==  Block was alloc'd at
==92==    at 0x483880B: malloc (vg_replace_malloc.c:299)
==92==    by 0x4B05047: PyObject_Malloc (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B5BB36: PyBytes_FromStringAndSize (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B1970C: PyUnicode_AsEncodedString (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x9EDD7B2: pycomp_get_string_from_unicode (pycomp.cpp:31)
==92==    by 0x9EDD7B2: PycompString::PycompString(_object*) (pycomp.cpp:43)
==92==    by 0x9ED3BD7: pySequenceConverter(_object*) (iutil-py.cpp:298)
==92==    by 0x9ED8CC7: filter_add (query-py.cpp:367)
==92==    by 0x9ED8CC7: filter_internal(libdnf::Query*, libdnf::Selector*, _object*, _object*, _object*) (query-py.cpp:475)
==92==    by 0x9ED90EC: filterm(_QueryObject*, _object*, _object*) (query-py.cpp:521)
==92==    by 0x4B6B9BD: _PyMethodDef_RawFastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B6BA1F: _PyCFunction_FastCallKeywords (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4BE36F2: _PyEval_EvalFrameDefault (in /usr/lib64/libpython3.7m.so.1.0)
==92==    by 0x4B236C7: _PyEval_EvalCodeWithName (in /usr/lib64/libpython3.7m.so.1.0)
==92==


Dependencies resolved.
Nothing to do.
Complete!
==92== 
==92== HEAP SUMMARY:
==92==     in use at exit: 6,186,882 bytes in 80,991 blocks
==92==   total heap usage: 1,612,766 allocs, 1,531,775 frees, 6,892,216,568 bytes allocated
==92== 
==92== LEAK SUMMARY:
==92==    definitely lost: 240 bytes in 5 blocks
==92==    indirectly lost: 0 bytes in 0 blocks
==92==      possibly lost: 3,450,811 bytes in 55,910 blocks
==92==    still reachable: 2,635,863 bytes in 24,257 blocks
==92==                       of which reachable via heuristic:
==92==                         newarray           : 1,536 bytes in 16 blocks
==92==         suppressed: 0 bytes in 0 blocks
==92== Rerun with --leak-check=full to see details of leaked memory
==92== 
==92== For counts of detected and suppressed errors, rerun with: -v
==92== Use --track-origins=yes to see where uninitialised values come from
==92== ERROR SUMMARY: 3759 errors from 11 contexts (suppressed: 0 from 0)

Expected results:
// no dnf related valgrind errors

Additional info: