Pasting the failure logs...
[47/46225] STAMP obj/cef/libcef/common/extensions/api/cef_permission_features_json_features.stamp
[48/46225] STAMP obj/chrome/browser/resources/extensions/preprocess.stamp
[49/46225] LIB obj/base/third_party/dynamic_annotations/dynamic_annotations.lib
FAILED: obj/base/third_party/dynamic_annotations/dynamic_annotations.lib
ninja -t msvc -e environment.x64 -- ..\..\third_party\llvm-build\Release+Asserts\bin\lld-link.exe /lib /nologo -libpath:..\..\third_party\llvm-build\Release+Asserts\lib\clang\12.0.0\lib\windows "-libpath:..\..\..\..\..\..\..\..\Program Files (x86)\Microsoft Visual Studio\2017\Professional\VC\Tools\MSVC\14.16.27023\ATLMFC\lib\x64" "-libpath:..\..\..\..\..\..\..\..\Program Files (x86)\Microsoft Visual Studio\2017\Professional\VC\Tools\MSVC\14.16.27023\lib\x64" "-libpath:..\..\..\..\..\..\..\..\Program Files (x86)\Windows Kits\NETFXSDK\4.6.1\lib\um\x64" "-libpath:..\..\..\..\..\..\..\..\Program Files (x86)\Windows Kits\10\lib\10.0.19041.0\ucrt\x64" "-libpath:..\..\..\..\..\..\..\..\Program Files (x86)\Windows Kits\10\lib\10.0.19041.0\um\x64" /ignore:4221 /OUT:obj/base/third_party/dynamic_annotations/dynamic_annotations.lib @obj/base/third_party/dynamic_annotations/dynamic_annotations.lib.rsp
obj/base/third_party/dynamic_annotations/dynamic_annotations.lib: permission denied
lld-link: error: lib failed
[50/46225] LIB obj/base/win/pe_image.lib
FAILED: obj/base/win/pe_image.lib
ninja -t msvc -e environment.x64 -- ..\..\third_party\llvm-build\Release+Asserts\bin\lld-link.exe /lib /nologo -libpath:..\..\third_party\llvm-build\Release+Asserts\lib\clang\12.0.0\lib\windows "-libpath:..\..\..\..\..\..\..\..\Program Files (x86)\Microsoft Visual Studio\2017\Professional\VC\Tools\MSVC\14.16.27023\ATLMFC\lib\x64" "-libpath:..\..\..\..\..\..\..\..\Program Files (x86)\Microsoft Visual Studio\2017\Professional\VC\Tools\MSVC\14.16.27023\lib\x64" "-libpath:..\..\..\..\..\..\..\..\Program Files (x86)\Windows Kits\NETFXSDK\4.6.1\lib\um\x64" "-libpath:..\..\..\..\..\..\..\..\Program Files (x86)\Windows Kits\10\lib\10.0.19041.0\ucrt\x64" "-libpath:..\..\..\..\..\..\..\..\Program Files (x86)\Windows Kits\10\lib\10.0.19041.0\um\x64" /ignore:4221 /OUT:obj/base/win/pe_image.lib @obj/base/win/pe_image.lib.rsp
obj/base/win/pe_image.lib: permission denied
lld-link: error: lib failed
[51/46225] LIB obj/base/third_party/double_conversion/double_conversion.lib
FAILED: obj/base/third_party/double_conversion/double_conversion.lib
ninja -t msvc -e environment.x64 -- ..\..\third_party\llvm-build\Release+Asserts\bin\lld-link.exe /lib /nologo -libpath:..\..\third_party\llvm-build\Release+Asserts\lib\clang\12.0.0\lib\windows "-libpath:..\..\..\..\..\..\..\..\Program Files (x86)\Microsoft Visual Studio\2017\Professional\VC\Tools\MSVC\14.16.27023\ATLMFC\lib\x64" "-libpath:..\..\..\..\..\..\..\..\Program Files (x86)\Microsoft Visual Studio\2017\Professional\VC\Tools\MSVC\14.16.27023\lib\x64" "-libpath:..\..\..\..\..\..\..\..\Program Files (x86)\Windows Kits\NETFXSDK\4.6.1\lib\um\x64" "-libpath:..\..\..\..\..\..\..\..\Program Files (x86)\Windows Kits\10\lib\10.0.19041.0\ucrt\x64" "-libpath:..\..\..\..\..\..\..\..\Program Files (x86)\Windows Kits\10\lib\10.0.19041.0\um\x64" /ignore:4221 /OUT:obj/base/third_party/double_conversion/double_conversion.lib @obj/base/third_party/double_conversion/double_conversion.lib.rsp
obj/base/third_party/double_conversion/double_conversion.lib: permission denied
lld-link: error: lib failed