diff --git a/include/boost/dll/detail/pe_info.hpp b/include/boost/dll/detail/pe_info.hpp
index 18b50cf1..0d153b1c 100644
--- a/include/boost/dll/detail/pe_info.hpp
+++ b/include/boost/dll/detail/pe_info.hpp
@@ -16,6 +16,7 @@
 
 #include <cstring>
 #include <fstream>
+#include <iostream>
 #include <string> // for std::getline
 #include <vector>
 
@@ -311,8 +312,10 @@ class pe_info {
 
     static std::vector<std::string> symbols(std::ifstream& fs, const char* section_name) {
         std::vector<std::string> ret;
+        std::cerr << "!!!!!! BEFORE header(fs)\n";
 
         const header_t h = header(fs);
+        std::cerr << "!!!!!! AFTER header(fs)\n";
         
         std::size_t section_begin_addr = 0;
         std::size_t section_end_addr = 0;
@@ -322,6 +325,7 @@ class pe_info {
             char name_helper[section_t::IMAGE_SIZEOF_SHORT_NAME_ + 1];
             std::memset(name_helper, 0, sizeof(name_helper));
             for (std::size_t i = 0;i < h.FileHeader.NumberOfSections;++i) {
+                std::cerr << "!!!!!! LOOP iteration " << i << "\n";
                 // There is no terminating null character if the string is exactly eight characters long
                 read_raw(fs, image_section_header);
                 std::memcpy(name_helper, image_section_header.Name, section_t::IMAGE_SIZEOF_SHORT_NAME_);
@@ -330,13 +334,16 @@ class pe_info {
                     section_end_addr = section_begin_addr + image_section_header.SizeOfRawData;
                 }
             }
+            std::cerr << "!!!!!! END LOOP iteration\n";
             
             // returning empty result if section was not found
             if(section_begin_addr == 0 || section_end_addr == 0)
                 return ret;
         }
 
+        std::cerr << "!!!!!! BEFORE exports(fs, h)\n";
         const exports_t exprt = exports(fs, h);
+        std::cerr << "!!!!!! AFTER exports(fs, h)\n";
         const std::size_t exported_symbols = exprt.NumberOfFunctions;
         const std::size_t fixed_names_addr = get_file_offset(fs, exprt.AddressOfNames, h);
         const std::size_t fixed_ordinals_addr = get_file_offset(fs, exprt.AddressOfNameOrdinals, h);
@@ -347,6 +354,7 @@ class pe_info {
         boost::dll::detail::WORD_ ordinal;
         std::string symbol_name;
         for (std::size_t i = 0;i < exported_symbols;++i) {
+            std::cerr << "!!!!!! LOOP exported_symbols iteration " << i << "\n";
             // getting ordinal
             fs.seekg(fixed_ordinals_addr + i * sizeof(ordinal));
             read_raw(fs, ordinal);
@@ -366,6 +374,7 @@ class pe_info {
             std::getline(fs, symbol_name, '\0');
             ret.push_back(symbol_name);
         }
+        std::cerr << "!!!!!! END LOOP exported_symbols\n";
 
         return ret;
     }
diff --git a/test/appveyor.yml b/test/appveyor.yml
index ef54c270..120f6de7 100644
--- a/test/appveyor.yml
+++ b/test/appveyor.yml
@@ -32,46 +32,12 @@ skip_tags: true
 
 environment:
   matrix:
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
-      TOOLSET: msvc-14.1
-      CXXSTD: 14,17
-      ADDRMD: 32,64
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
-      TOOLSET: msvc-14.2
-      CXXSTD: 14,17,latest  # latest is C++2a
-      ADDRMD: 32,64
     # TODO: Clang 32bit job yields:
     # LINK : fatal error LNK1171: unable to load mspdbcore.dll (error code: 126)
     - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
       TOOLSET: clang-win
       CXXSTD: 14,17
       ADDRMD: 64
-    # Some issue with stdcxx=14 builds:
-    # clang-cl: error: linker command failed with exit code 1181 (use -v to see invocation)
-    # "clang-cl.exe" "clang-cl.exe" -m64 -m64 /link /link /incremental:no /incremental:no /manifest /manifest /DLL /subsystem:console /subsystem:console /out:"..\..\..\bin.v2\libs\dll\test\clang-win-9.0.1\release\address-model-64\cxxstd-14-iso\threading-multi\library1-clangw9-mt-x64-1_73.dll" /IMPLIB:"..\..\..\bin.v2\libs\dll\test\clang-win-9.0.1\release\address-model-64\cxxstd-14-iso\threading-multi\library1-clangw9-mt-x64-1_73.lib"    @"..\..\..\bin.v2\libs\dll\test\clang-win-9.0.1\release\address-model-64\cxxstd-14-iso\threading-multi\library1-clangw9-mt-x64-1_73.dll.rsp"
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
-      TOOLSET: clang-win
-      CXXSTD: 17,2a
-      ADDRMD: 32,64
-      
-    # TODO: Both Cygwins have problems with <link.h> and `dladdr`
-    #- APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
-    #  ADDPATH: C:\cygwin\bin;
-    #  TOOLSET: gcc
-    #  CXXSTD: 11,14,1z
-    #- APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
-    #  ADDPATH: C:\cygwin64\bin;
-    #  TOOLSET: gcc
-    #  CXXSTD: 11,14,1z
-    # MinGW 32 bit is not supported by boost system any more
-    #- APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
-    #  ADDPATH: C:\mingw\bin;
-    #  TOOLSET: gcc
-    #  CXXSTD: 11,14,1z
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
-      ADDPATH: C:\mingw-w64\x86_64-7.2.0-posix-seh-rt_v5-rev1\mingw64\bin;
-      TOOLSET: gcc
-      CXXSTD: 11,14,1z
 
 before_build:
     - set BOOST_BRANCH=develop