Index: lang/rust/Makefile
===================================================================
--- lang/rust/Makefile
+++ lang/rust/Makefile
@@ -143,6 +143,10 @@
 		${WRKSRC}/build/cache/${CARGO_BOOTSTRAP_DIR}
 	${LN} -sf ${DISTDIR}/${DIST_SUBDIR}/${RUSTC_BOOTSTRAP} \
 		${WRKSRC}/build/cache/${RUST_BOOTSTRAP_DIR}
+.if ${OPSYS} != FreeBSD || ${OSVERSION} < 1200031
+	${LN} -sf ${DISTDIR}/${DIST_SUBDIR}/${RUST_STD_BOOTSTRAP} \
+		${WRKSRC}/build/cache/${RUST_BOOTSTRAP_DIR}
+.endif
 	${LN} -sf ${DISTDIR}/${DIST_SUBDIR}/${CARGO_BOOTSTRAP} \
 		${WRKSRC}/build/cache/${CARGO_BOOTSTRAP_DIR}
 	${TAR} -x -C ${WRKSRC} -f ${DISTDIR}/${DIST_SUBDIR}/${RUST_STD_BOOTSTRAP}