=> Bootstrap dependency digest>=20010302: found digest-20190127
ERROR: This package is only available for these platforms: Darwin-*-x86_64 FreeBSD-*-i386 FreeBSD-*-x86_64 NetBSD-*-x86_64 Linux-*-aarch64 Linux-*-i386 Linux-*-x86_64.
ERROR: This package has set PKG_SKIP_REASON:
ERROR: rust-bin-1.47.0 is not available for NetBSD-9.0-sparc64
*** Error code 1

Stop.
make: stopped in /usr/pkgsrc/lang/rust-bin