zlib:x86-windows build failure

[turngrobi]

Host Environment

• OS: Windows 10 x64
• Compiler: revision

To Reproduce
Steps to reproduce the behavior:
.\vcpkg install zlib:x86-windows

Failure logs
Computing installation plan...
The following packages will be built and installed:
zlib[core]:x86-windows
Detecting compiler hash for triplet x86-windows...
Starting package 1/1: zlib:x86-windows
Building package zlib[core]:x86-windows...
Could not locate cached archive: C:\Users\VeitW\AppData\Local\vcpkg\archives\11\11c81e9f496fe01c4520033c571c33a473a2bf61.zip
-- Using cached C:/ADOS/ecoSystem/vcpkg/downloads/zlib1211.tar.gz
-- Cleaning sources at C:/ADOS/ecoSystem/vcpkg/buildtrees/zlib/src/1.2.11-deec42f53b.clean. Use --editable to skip cleaning for the packages you specify.
-- Extracting source C:/ADOS/ecoSystem/vcpkg/downloads/zlib1211.tar.gz
-- Applying patch cmake_dont_build_more_than_needed.patch
-- Using source at C:/ADOS/ecoSystem/vcpkg/buildtrees/zlib/src/1.2.11-deec42f53b.clean
-- Configuring x86-windows
-- Building x86-windows-dbg
-- Building x86-windows-rel
-- Fixing pkgconfig
-- Acquiring MSYS Packages...
CMake Error at scripts/cmake/vcpkg_execute_required_process.cmake:72 (message):
Command failed: C:/ADOS/ecoSystem/vcpkg/downloads/tools/msys2/msys64/usr/bin/bash.exe --noprofile --norc -c "pacman -S --noconfirm --needed pkg-config"
Working Directory: C:/ADOS/ecoSystem/vcpkg/downloads/tools/msys2
Error code: 1
See logs for more information:
C:\ADOS\ecoSystem\vcpkg\buildtrees\zlib\msys-pacman-x86-windows-err.log

error: mingw32: key "4A6129F4E4B84AE46ED7F635628F528CF3053E04" is unknown
error: key "4A6129F4E4B84AE46ED7F635628F528CF3053E04" could not be looked up remotely
error: mingw64: key "4A6129F4E4B84AE46ED7F635628F528CF3053E04" is unknown
error: key "4A6129F4E4B84AE46ED7F635628F528CF3053E04" could not be looked up remotely
error: msys: key "4A6129F4E4B84AE46ED7F635628F528CF3053E04" is unknown
error: key "4A6129F4E4B84AE46ED7F635628F528CF3053E04" could not be looked up remotely
error: database 'mingw32' is not valid (invalid or corrupted database (PGP signature))
error: database 'mingw64' is not valid (invalid or corrupted database (PGP signature))
error: database 'msys' is not valid (invalid or corrupted database (PGP signature))

Call Stack (most recent call first):
scripts/cmake/vcpkg_acquire_msys.cmake:153 (vcpkg_execute_required_process)
scripts/cmake/vcpkg_fixup_pkgconfig.cmake:281 (vcpkg_acquire_msys)
ports/zlib/portfile.cmake:46 (vcpkg_fixup_pkgconfig)
scripts/ports.cmake:79 (include)

Error: Building package zlib:x86-windows failed with: BUILD_FAILED
Please ensure you're using the latest portfiles with .\vcpkg update, then
submit an issue at https://github.com/Microsoft/vcpkg/issues including:
Package: zlib:x86-windows
Vcpkg version: 2020.06.15-nohash

Additionally, attach any relevant sections from the log files above.

Additional context
.\vcpkg update
To update the local portfiles, use git pull.
No packages need updating.

git pull
Already up to date.

[linquize]

Could you clear all the packages, git pull and try 25412e1?

[awhittle3]

Same issue happens with zlib:x64-windows and protobuf:x64-windows with a new install of vcpkg from master (commit 0babd2f), and with a fresh install of suggested commit 25412e1.

OS: Windows 10 x64
Compiler: VS 2019 Community v16.6.5

This issue seemed to start occurring on Monday for us, with issues similar to what's described here

Also note that older versions of vcpkg (e.g. 2020.04) seem to work now, which wasn't the case yesterday.

[TheReclif]

Try applying fixes from #12565 (comment) to a clean, new install of vcpkg.

[linquize]

Do you think that's network issue?

[turngrobi]

Okay, the workaround mentioned by awhittle3 fixes my problem for now.
Thx.

[PhoebeHui]

@turngrobi, the msys issue has been fixed, please remove the old msys in downloads/tools folder, get latest source and try again.

For pkg-config issue, it would be fixed by PR #12569.

Duplicated this issue to #12565.