* Package:    dev-libs/mpfr-4.2.0:0/6
 * Repository: gentoo
 * Maintainer: toolchain@gentoo.org
 * USE:        abi_x86_64 amd64 elibc_glibc kernel_linux userland_GNU
 * FEATURES:   network-sandbox preserve-libs sandbox userpriv usersandbox

>>> Unpacking source...
 * Verifying mpfr-4.2.0.tar.xz ...
Traceback (most recent call last):
  File "/usr/lib/python-exec/python3.10/gemato", line 8, in <module>
    sys.exit(setuptools_main())
  File "/usr/lib/python3.10/site-packages/gemato/cli.py", line 679, in setuptools_main
    sys.exit(main(sys.argv))
  File "/usr/lib/python3.10/site-packages/gemato/cli.py", line 652, in main
    vals.cmd.parse_args(vals, argp)
  File "/usr/lib/python3.10/site-packages/gemato/cli.py", line 604, in parse_args
    super().parse_args(args, argp)
  File "/usr/lib/python3.10/site-packages/gemato/cli.py", line 151, in parse_args
    super().parse_args(args, argp)
  File "/usr/lib/python3.10/site-packages/gemato/cli.py", line 118, in parse_args
    with open(args.openpgp_key, 'rb') as f:
FileNotFoundError: [Errno 2] No such file or directory: '/usr/share/openpgp-keys/vincentlefevre.asc'
 * ERROR: dev-libs/mpfr-4.2.0::gentoo failed (unpack phase):
 *   PGP signature verification failed
 * 
 * Call stack:
 *     ebuild.sh, line  136:  Called src_unpack
 *   environment, line 1671:  Called verify-sig_verify_detached '/var/tmp/portage/dev-libs/mpfr-4.2.0/distdir/mpfr-4.2.0.tar.xz' '/var/tmp/portage/dev-libs/mpfr-4.2.0/distdir/mpfr-4.2.0.tar.xz.asc'
 *   environment, line 2548:  Called die
 * The specific snippet of code:
 *               gemato gpg-wrap -K "${key}" "${extra_args[@]}" -- gpg --verify "${sig}" "${file}" || die "PGP signature verification failed"
 * 
 * If you need support, post the output of `emerge --info '=dev-libs/mpfr-4.2.0::gentoo'`,
 * the complete build log and the output of `emerge -pqv '=dev-libs/mpfr-4.2.0::gentoo'`.
 * The complete build log is located at '/var/log/portage/dev-libs:mpfr-4.2.0:20230107-080520.log'.
 * For convenience, a symlink to the build log is located at '/var/tmp/portage/dev-libs/mpfr-4.2.0/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/dev-libs/mpfr-4.2.0/temp/environment'.
 * Working directory: '/var/tmp/portage/dev-libs/mpfr-4.2.0/work'
 * S: '/var/tmp/portage/dev-libs/mpfr-4.2.0/work/mpfr-4.2.0'