Unable to use this crate on windows

[Kofituo]

This crate cannot compile with the following error

   Compiling openssl-sys v0.9.66
error: failed to run custom build command for `openssl-sys v0.9.66`
Caused by:
  process didn't exit successfully: `C:\Users\taimoor\IdeaProjects\playground\target\debug\build\openssl-sys-2cd88c7e510671a4\build-script-main` (exit code: 101)
  --- stdout
  cargo:rustc-cfg=const_fn
  cargo:rerun-if-env-changed=X86_64_PC_WINDOWS_MSVC_OPENSSL_LIB_DIR
  X86_64_PC_WINDOWS_MSVC_OPENSSL_LIB_DIR unset
  cargo:rerun-if-env-changed=OPENSSL_LIB_DIR
  OPENSSL_LIB_DIR unset
  cargo:rerun-if-env-changed=X86_64_PC_WINDOWS_MSVC_OPENSSL_INCLUDE_DIR
  X86_64_PC_WINDOWS_MSVC_OPENSSL_INCLUDE_DIR unset
  cargo:rerun-if-env-changed=OPENSSL_INCLUDE_DIR
  OPENSSL_INCLUDE_DIR unset
  cargo:rerun-if-env-changed=X86_64_PC_WINDOWS_MSVC_OPENSSL_DIR
  X86_64_PC_WINDOWS_MSVC_OPENSSL_DIR unset
  cargo:rerun-if-env-changed=OPENSSL_DIR
  OPENSSL_DIR unset
  note: vcpkg did not find openssl: Could not find library in Vcpkg tree package openssl is not installed for vcpkg triplet x64-windows-static-md
  --- stderr
  thread 'main' panicked at '
  Could not find directory of OpenSSL installation, and this `-sys` crate cannot
  proceed without this knowledge. If OpenSSL is installed and this crate had
  trouble finding it,  you can set the `OPENSSL_DIR` environment variable for the
  compilation process.
  Make sure you also have the development packages of openssl installed.
  For example, `libssl-dev` on Ubuntu or `openssl-devel` on Fedora.
  If you're in a situation where you think the directory *should* be found
  automatically, please open a bug at https://github.com/sfackler/rust-openssl
  and include information about your system as well as this message.
  $HOST = x86_64-pc-windows-msvc
  $TARGET = x86_64-pc-windows-msvc
  openssl-sys = 0.9.66
  It looks like you're compiling for MSVC but we couldn't detect an OpenSSL
  installation. If there isn't one installed then you can try the rust-openssl
  README for more information about how to download precompiled binaries of
  OpenSSL:
  https://github.com/sfackler/rust-openssl#windows
  ', C:\Users\taimoor\.cargo\registry\src\github.com-1ecc6299db9ec823\openssl-sys-0.9.66\build\find_normal.rs:174:5
  stack backtrace:
     0: std::panicking::begin_panic_handler
               at /rustc/c3c0f80d6081092faff801542dd82f0e2420152b\/library\std\src\panicking.rs:517
     1: std::panicking::begin_panic_fmt
               at /rustc/c3c0f80d6081092faff801542dd82f0e2420152b\/library\std\src\panicking.rs:460
     2: build_script_main::find_normal::find_openssl_dir
               at .\build\find_normal.rs:174
     3: build_script_main::find_normal::get_openssl::closure$0
               at .\build\find_normal.rs:15
     4: enum$<core::option::Option<std::ffi::os_str::OsString>, 1, 18446744073709551615, Some>::unwrap_or_else<std::ffi::os_str::OsString,build_script_main::find_normal::get_openssl::closure$0>
               at /rustc/c3c0f80d6081092faff801542dd82f0e2420152b\library\core\src\option.rs:776
     5: build_script_main::find_normal::get_openssl
               at .\build\find_normal.rs:15
     6: build_script_main::find_openssl
               at .\build\main.rs:55
     7: build_script_main::main
               at .\build\main.rs:63
     8: core::ops::function::FnOnce::call_once<void (*)(),tuple$<> >
               at /rustc/c3c0f80d6081092faff801542dd82f0e2420152b\library\core\src\ops\function.rs:227

So after explicitly setting the OPENSSL_DIR variable to C:\Program Files\OpenSSL-Win64, I get this error

   Compiling openssl-sys v0.9.66
error: failed to run custom build command for `openssl-sys v0.9.66`
Caused by:
  process didn't exit successfully: `C:\Users\taimoor\IdeaProjects\playground\target\debug\build\openssl-sys-2cd88c7e510671a4\build-script-main` (exit code: 101)
  --- stdout
  cargo:rustc-cfg=const_fn
  cargo:rerun-if-env-changed=X86_64_PC_WINDOWS_MSVC_OPENSSL_LIB_DIR
  X86_64_PC_WINDOWS_MSVC_OPENSSL_LIB_DIR unset
  cargo:rerun-if-env-changed=OPENSSL_LIB_DIR
  OPENSSL_LIB_DIR unset
  cargo:rerun-if-env-changed=X86_64_PC_WINDOWS_MSVC_OPENSSL_INCLUDE_DIR
  X86_64_PC_WINDOWS_MSVC_OPENSSL_INCLUDE_DIR unset
  cargo:rerun-if-env-changed=OPENSSL_INCLUDE_DIR
  OPENSSL_INCLUDE_DIR unset
  cargo:rerun-if-env-changed=X86_64_PC_WINDOWS_MSVC_OPENSSL_DIR
  X86_64_PC_WINDOWS_MSVC_OPENSSL_DIR unset
  cargo:rerun-if-env-changed=OPENSSL_DIR
  OPENSSL_DIR =  C:\Program Files\OpenSSL-Win64
  --- stderr
  thread 'main' panicked at 'OpenSSL library directory does not exist:  C:\Program Files\OpenSSL-Win64\lib', C:\Users\taimoor\.cargo\registry\src\github.com-1ecc6299db9ec823\openssl-sys-0.9.66\build/main.rs:66:9
  stack backtrace:

But C:\Program Files\OpenSSL-Win64\lib folder exists (confirmed using Path::new("C:\\Program Files\\OpenSSL-Win64\\lib").exists(), similar to what is in the source code) so I'm confused as to why it is producing that error message