test failure on latest commit (removeAll(NON_EXISTANT_PATH_BASE) == -1)

Hi,

Attempting to build the latest commit with GNU Guix, I get:

starting phase `check'
Running tests...
/gnu/store/yh3yl7hzaa1ig3vz5gwgmbxic698nnsx-cmake-minimal-3.24.2/bin/ctest --force-new-ctest-process 
Test project /tmp/guix-build-dhtnet-0.0.1-0.8b6e99f.drv-0/build
    Start 1: tests_certstore
1/2 Test #1: tests_certstore ..................   Passed   13.18 sec
    Start 2: tests_fileutils
2/2 Test #2: tests_fileutils ..................***Failed    0.02 sec
.F...


!!!FAILURES!!!
Test Results:
Run:  4   Failures: 1   Errors: 0


1) test: dhtnet::fileutils::test::FileutilsTest::testCheckDir (F) line: 100 /tmp/guix-build-dhtnet-0.0.1-0.8b6e99f.drv-0/source/tests/testFileutils.cpp
assertion failed
- Expression: removeAll(NON_EXISTANT_PATH_BASE) == -1




50% tests passed, 1 tests failed out of 2

Total Test time (real) =  13.20 sec

The following tests FAILED:
          2 - tests_fileutils (Failed)
Errors while running CTest
make: *** [Makefile:74: test] Error 8

Test suite failed, dumping logs.
error: in phase 'check': uncaught exception:
%exception #<&invoke-error program: "make" arguments: ("test" "-j" "4") exit-status: 2 term-signal: #f stop-signal: #f> 
phase `check' failed after 13.3 seconds

Looking at the source, it seems like removeAll is expected to return -1 upon error (removing nonexistant path?), but that doesn't happen for some reason:

    CPPUNIT_ASSERT(removeAll(NON_EXISTANT_PATH_BASE) == 0);
    CPPUNIT_ASSERT(!isDirectory(NON_EXISTANT_PATH_BASE));
    //remove an non existent directory
    CPPUNIT_ASSERT(removeAll(NON_EXISTANT_PATH_BASE) == -1);