Tests failing on Windows with MSVC and GCC

On my Windows 10, with MS Visual Studio 2017 and MinGW with GCC 7.2 I have installed Boost following steps on https://github.com/boostorg/boost/wiki/Getting-Started:

```
git clone --recursive https://github.com/boostorg/boost.git
cd boost
git checkout develop
.\bootstrap
.\b2 headers
```

Then I have added `b2` to my `PATH` and done this:
```
cd libs\bimap\test
b2 # for MSVC
b2 toolset=gcc # for GCC
```

Sadly in both cases some tests failed. Different tests with both cases. Below console outputs are from a second run of `b2` to take out staff that is OK:
```
C:\Boost\boost\libs\bimap\test>b2
..\..\..\libs\log\build\Jamfile.v2:45: Unescaped special character in argument $(flag)=1
C:/Boost/boost/libs/predef/check/../tools/check\predef.jam:46: Unescaped special character in argument $(language)::$(expression)
Performing configuration checks

- default address-model : 32-bit (cached)
- default architecture : x86 (cached)
- symlinks supported : yes (cached)
...patience...
...patience...
...patience...
...found 5709 targets...
...updating 3 targets...
msvc.write-setup-script ..\..\..\bin.v2\standalone\msvc\msvc-14.1\msvc-setup.bat
testing.capture-output ..\..\..\bin.v2\libs\bimap\test\test_bimap_unordered.test\msvc-14.1\debug\threading-multi\test_bimap_unordered.run
====== BEGIN OUTPUT ======
C:\Boost\boost\libs/bimap/test/test_bimap.hpp(417): test const_c.bucket_size(const_c.bucket(di->first)) == 1 failed in function: 'void __cdecl test_pair_unordered_associative_container,struct std::equal_to >,struct boost::bimaps::unordered_multiset_of,class std::allocator >,struct boost::hash,class std::allocator > >,struct std::equal_to,class std::allocator > > >,struct boost::mpl::na,struct boost::mpl::na,struct boost::mpl::na> >,class std::map,class std::allocator >,char,struct std::less,class std::allocator > >,class std::allocator,class std::allocator > const ,char> > >>(class boost::bimaps::views::unordered_multimap_view,struct std::equal_to >,struct boost::bimaps::unordered_multiset_of,class std::allocator >,struct boost::hash,class std::allocator > >,struct std::equal_to,class std::allocator > > >,struct boost::mpl::na,struct boost::mpl::na,struct boost::mpl::na> > &,const class std::map,class std::allocator >,char,struct std::less,class std::allocator > >,class std::allocator,class std::allocator > const ,char> > > &)'
C:\Boost\boost\libs/bimap/test/test_bimap.hpp(417): test const_c.bucket_size(const_c.bucket(di->first)) == 1 failed in function: 'void __cdecl test_pair_unordered_associative_container,struct std::equal_to >,struct boost::bimaps::unordered_multiset_of,class std::allocator >,struct boost::hash,class std::allocator > >,struct std::equal_to,class std::allocator > > >,struct boost::mpl::na,struct boost::mpl::na,struct boost::mpl::na> >,class std::map,class std::allocator >,char,struct std::less,class std::allocator > >,class std::allocator,class std::allocator > const ,char> > >>(class boost::bimaps::views::unordered_multimap_view,struct std::equal_to >,struct boost::bimaps::unordered_multiset_of,class std::allocator >,struct boost::hash,class std::allocator > >,struct std::equal_to,class std::allocator > > >,struct boost::mpl::na,struct boost::mpl::na,struct boost::mpl::na> > &,const class std::map,class std::allocator >,char,struct std::less,class std::allocator > >,class std::allocator,class std::allocator > const ,char> > > &)'
C:\Boost\boost\libs/bimap/test/test_bimap.hpp(417): test const_c.bucket_size(const_c.bucket(di->first)) == 1 failed in function: 'void __cdecl test_pair_unordered_associative_container,struct std::equal_to >,struct boost::bimaps::unordered_multiset_of,class std::allocator >,struct boost::hash,class std::allocator > >,struct std::equal_to,class std::allocator > > >,struct boost::mpl::na,struct boost::mpl::na,struct boost::mpl::na> >,class std::map,class std::allocator >,char,struct std::less,class std::allocator > >,class std::allocator,class std::allocator > const ,char> > >>(class boost::bimaps::views::unordered_multimap_view,struct std::equal_to >,struct boost::bimaps::unordered_multiset_of,class std::allocator >,struct boost::hash,class std::allocator > >,struct std::equal_to,class std::allocator > > >,struct boost::mpl::na,struct boost::mpl::na,struct boost::mpl::na> > &,const class std::map,class std::allocator >,char,struct std::less,class std::allocator > >,class std::allocator,class std::allocator > const ,char> > > &)'
C:\Boost\boost\libs/bimap/test/test_bimap.hpp(417): test const_c.bucket_size(const_c.bucket(di->first)) == 1 failed in function: 'void __cdecl test_pair_unordered_associative_container,struct boost::hash,struct std::equal_to >,struct boost::bimaps::unordered_multiset_of,class std::allocator >,struct right_tag>,struct boost::hash,class std::allocator > >,struct std::equal_to,class std::allocator > > >,struct boost::mpl::na,struct boost::mpl::na,struct boost::mpl::na> >,class std::map,class std::allocator >,char,struct std::less,class std::allocator > >,class std::allocator,class std::allocator > const ,char> > >>(class boost::bimaps::views::unordered_multimap_view,struct boost::hash,struct std::equal_to >,struct boost::bimaps::unordered_multiset_of,class std::allocator >,struct right_tag>,struct boost::hash,class std::allocator > >,struct std::equal_to,class std::allocator > > >,struct boost::mpl::na,struct boost::mpl::na,struct boost::mpl::na> > &,const class std::map,class std::allocator >,char,struct std::less,class std::allocator > >,class std::allocator,class std::allocator > const ,char> > > &)'
C:\Boost\boost\libs/bimap/test/test_bimap.hpp(417): test const_c.bucket_size(const_c.bucket(di->first)) == 1 failed in function: 'void __cdecl test_pair_unordered_associative_container,struct boost::hash,struct std::equal_to >,struct boost::bimaps::unordered_multiset_of,class std::allocator >,struct right_tag>,struct boost::hash,class std::allocator > >,struct std::equal_to,class std::allocator > > >,struct boost::mpl::na,struct boost::mpl::na,struct boost::mpl::na> >,class std::map,class std::allocator >,char,struct std::less,class std::allocator > >,class std::allocator,class std::allocator > const ,char> > >>(class boost::bimaps::views::unordered_multimap_view,struct boost::hash,struct std::equal_to >,struct boost::bimaps::unordered_multiset_of,class std::allocator >,struct right_tag>,struct boost::hash,class std::allocator > >,struct std::equal_to,class std::allocator > > >,struct boost::mpl::na,struct boost::mpl::na,struct boost::mpl::na> > &,const class std::map,class std::allocator >,char,struct std::less,class std::allocator > >,class std::allocator,class std::allocator > const ,char> > > &)'
C:\Boost\boost\libs/bimap/test/test_bimap.hpp(417): test const_c.bucket_size(const_c.bucket(di->first)) == 1 failed in function: 'void __cdecl test_pair_unordered_associative_container,struct boost::hash,struct std::equal_to >,struct boost::bimaps::unordered_multiset_of,class std::allocator >,struct right_tag>,struct boost::hash,class std::allocator > >,struct std::equal_to,class std::allocator > > >,struct boost::mpl::na,struct boost::mpl::na,struct boost::mpl::na> >,class std::map,class std::allocator >,char,struct std::less,class std::allocator > >,class std::allocator,class std::allocator > const ,char> > >>(class boost::bimaps::views::unordered_multimap_view,struct boost::hash,struct std::equal_to >,struct boost::bimaps::unordered_multiset_of,class std::allocator >,struct right_tag>,struct boost::hash,class std::allocator > >,struct std::equal_to,class std::allocator > > >,struct boost::mpl::na,struct boost::mpl::na,struct boost::mpl::na> > &,const class std::map,class std::allocator >,char,struct std::less,class std::allocator > >,class std::allocator,class std::allocator > const ,char> > > &)'

**** 6 errors detected

EXIT STATUS: 201
====== END OUTPUT ======

set status=0
if %status% NEQ 0 (
echo Skipping test execution due to testing.execute=off
exit 0
)
"..\..\..\bin.v2\libs\bimap\test\test_bimap_unordered.test\msvc-14.1\debug\threading-multi\test_bimap_unordered.exe" > "..\..\..\bin.v2\libs\bimap\test\test_bimap_unordered.test\msvc-14.1\debug\threading-multi\test_bimap_unordered.output" 2>&1
set status=%ERRORLEVEL%
echo. >> "..\..\..\bin.v2\libs\bimap\test\test_bimap_unordered.test\msvc-14.1\debug\threading-multi\test_bimap_unordered.output"
echo EXIT STATUS: %status% >> "..\..\..\bin.v2\libs\bimap\test\test_bimap_unordered.test\msvc-14.1\debug\threading-multi\test_bimap_unordered.output"
if %status% EQU 0 (
copy "..\..\..\bin.v2\libs\bimap\test\test_bimap_unordered.test\msvc-14.1\debug\threading-multi\test_bimap_unordered.output" "..\..\..\bin.v2\libs\bimap\test\test_bimap_unordered.test\msvc-14.1\debug\threading-multi\test_bimap_unordered.run"
)
set verbose=0
if %status% NEQ 0 (
set verbose=1
)
if %verbose% EQU 1 (
echo ====== BEGIN OUTPUT ======
type "..\..\..\bin.v2\libs\bimap\test\test_bimap_unordered.test\msvc-14.1\debug\threading-multi\test_bimap_unordered.output"
echo ====== END OUTPUT ======
)
exit %status%

...failed testing.capture-output ..\..\..\bin.v2\libs\bimap\test\test_bimap_unordered.test\msvc-14.1\debug\threading-multi\test_bimap_unordered.run...
...failed updating 1 target...
...skipped 1 target...
...updated 2 targets...
```

The same with GCC:
```
C:\Boost\boost\libs\bimap\test>b2 toolset=gcc
..\..\..\libs\log\build\Jamfile.v2:45: Unescaped special character in argument $(flag)=1
C:/Boost/boost/libs/predef/check/../tools/check\predef.jam:46: Unescaped special character in argument $(language)::$(expression)
Performing configuration checks

- default address-model : 64-bit (cached)
- default architecture : x86 (cached)
- symlinks supported : yes (cached)
...patience...
...patience...
...patience...
...found 5660 targets...
...updating 2 targets...
testing.capture-output ..\..\..\bin.v2\libs\bimap\test\test_bimap_serialization.test\gcc-7.2.0\debug\test_bimap_serialization.run
====== BEGIN OUTPUT ======
..\..\../boost/test/minimal.hpp(136): exception "boost::archive::archive_exception: output stream error" caught in function: 'int main(int, char**)'

**** Testing aborted.
**** 1 error detected

EXIT STATUS: 201
====== END OUTPUT ======

set Path=C:\Boost\boost\bin.v2\libs\serialization\build\gcc-7.2.0\debug;C:\MinGW\bin;C:\MinGW\lib;C:\MinGW\lib32;C:\MinGW\lib64;%Path%

set status=0
if %status% NEQ 0 (
echo Skipping test execution due to testing.execute=off
exit 0
)
"..\..\..\bin.v2\libs\bimap\test\test_bimap_serialization.test\gcc-7.2.0\debug\test_bimap_serialization.exe" > "..\..\..\bin.v2\libs\bimap\test\test_bimap_serialization.test\gcc-7.2.0\debug\test_bimap_serialization.output" 2>&1
set status=%ERRORLEVEL%
echo. >> "..\..\..\bin.v2\libs\bimap\test\test_bimap_serialization.test\gcc-7.2.0\debug\test_bimap_serialization.output"
echo EXIT STATUS: %status% >> "..\..\..\bin.v2\libs\bimap\test\test_bimap_serialization.test\gcc-7.2.0\debug\test_bimap_serialization.output"
if %status% EQU 0 (
copy "..\..\..\bin.v2\libs\bimap\test\test_bimap_serialization.test\gcc-7.2.0\debug\test_bimap_serialization.output" "..\..\..\bin.v2\libs\bimap\test\test_bimap_serialization.test\gcc-7.2.0\debug\test_bimap_serialization.run"
)
set verbose=0
if %status% NEQ 0 (
set verbose=1
)
if %verbose% EQU 1 (
echo ====== BEGIN OUTPUT ======
type "..\..\..\bin.v2\libs\bimap\test\test_bimap_serialization.test\gcc-7.2.0\debug\test_bimap_serialization.output"
echo ====== END OUTPUT ======
)
exit %status%

...failed testing.capture-output ..\..\..\bin.v2\libs\bimap\test\test_bimap_serialization.test\gcc-7.2.0\debug\test_bimap_serialization.run...
...failed updating 1 target...
...skipped 1 target...
```

Am I doing something wrong? How should I proceed to have the tests running clean (as I expected they should)?