Multibase no longer compiles with golang version go version go1.16.4 about multibase HOT 2 CLOSED

$ cd ~/.cache/yay/multibase
$ makepkg
==> Making package: multibase 1.0-1 (Fri Oct 15 07:05:08 2021)
==> Checking runtime dependencies...
==> Checking buildtime dependencies...
==> Retrieving sources...
  -> Found 1.0.tar.gz
==> Validating source files with sha256sums...
    1.0.tar.gz ... Passed
==> Extracting sources...
  -> Extracting 1.0.tar.gz with bsdtar
==> Removing existing $pkgdir/ directory...
==> Starting build()...
Installing dependencies
Building package
go: cannot find main module, but found .git/config in /home/rutledge/.cache/yay/multibase
        to create a module there, run:
        cd ../.. && go mod init
==> ERROR: A failure occurred in build().
    Aborting...

$ go mod init multibase
go: creating new go.mod: module multibase
go: to add module requirements and sums:
        go mod tidy

$ makepkg
==> Making package: multibase 1.0-1 (Fri Oct 15 07:06:22 2021)
==> Checking runtime dependencies...
==> Checking buildtime dependencies...
==> Retrieving sources...
  -> Found 1.0.tar.gz
==> Validating source files with sha256sums...
    1.0.tar.gz ... Passed
==> Extracting sources...
  -> Extracting 1.0.tar.gz with bsdtar
==> Removing existing $pkgdir/ directory...
==> Starting build()...
Installing dependencies
Building package
==> Entering fakeroot environment...
==> Starting package()...
Moving package to /usr/local/bin
Done
==> Tidying install...
  -> Removing libtool files...
  -> Purging unwanted files...
  -> Removing static library files...
  -> Stripping unneeded symbols from binaries and libraries...
  -> Compressing man and info pages...
==> Checking for packaging issues...
==> WARNING: Package contains reference to $srcdir
usr/bin/mb
==> Creating package "multibase"...
  -> Generating .PKGINFO file...
  -> Generating .BUILDINFO file...
  -> Generating .MTREE file...
  -> Compressing package...
==> Leaving fakeroot environment.
==> Finished making: multibase 1.0-1 (Fri Oct 15 07:06:24 2021)