dev-embedded/probe-rs-tools: RESTRICT=test because testing is impossible

As far as I know testing is impossible because a target can't be
installed in the sandbox.

Closes: https://bugs.gentoo.org/976011
Signed-off-by: AshyPinguin <pinguinlars1105+gentoo@gmail.com>

dev-embedded/probe-rs-tools/probe-rs-tools-0.31.0.ebuild

@@ -6,6 +6,14 @@
 EAPI=8
 RUST_MIN_VER="1.88"
 
+# test crates (needs thumbv7em-none-eabi)
+# CRATES="
+# 	panic-halt@1.0.0
+# 	cortex-m-rt@0.7.5
+# 	cortex-m-rt-macros@0.7.5
+# "
+#
+
 inherit cargo shell-completion
 
 DESCRIPTION="A collection of on chip debugging tools to communicate with microchips."
@@ -13,6 +21,7 @@ HOMEPAGE="https://probe.rs"
 SRC_URI="
 	https://github.com/probe-rs/probe-rs/archive/refs/tags/v${PV}.tar.gz -> ${P}.tar.gz
 	https://codeberg.org/AshyPinguin/vendor-tarballs/releases/download/${P}/${P}-crates.tar.xz
+	${CARGO_CRATE_URIS}
 "
 
 S="${WORKDIR}/probe-rs-${PV}/probe-rs-tools"
@@ -26,6 +35,8 @@ LICENSE+="
 SLOT="0"
 KEYWORDS="~amd64 ~arm64"
 
+RESTRICT=test #TODO: allow manual testing if it is possible to install a target
+
 src_install() {
 	cargo_src_install