diff -Nru rustc-1.27.2+dfsg1/debian/architecture.mk rustc-1.27.2+dfsg1/debian/architecture.mk
--- rustc-1.27.2+dfsg1/debian/architecture.mk	2018-03-03 11:23:04.000000000 +0000
+++ rustc-1.27.2+dfsg1/debian/architecture.mk	2018-08-24 06:54:48.000000000 +0000
@@ -2,10 +2,7 @@
 
 include /usr/share/dpkg/architecture.mk
 
-rust_cpu = $(subst i586,i686,\
-$(if $(findstring -armhf-,-$(2)-),$(subst arm,armv7,$(1)),\
-$(if $(findstring -armel-,-$(2)-),$(subst arm,armv5te,$(1)),\
-$(1))))
+rust_cpu = $(subst i586,i686,$(1))
 rust_type_setvar = $(1)_RUST_TYPE ?= $(call rust_cpu,$($(1)_GNU_CPU),$($(1)_ARCH))-unknown-$($(1)_GNU_SYSTEM)
 
 $(foreach machine,BUILD HOST TARGET,\
diff -Nru rustc-1.27.2+dfsg1/debian/changelog rustc-1.27.2+dfsg1/debian/changelog
--- rustc-1.27.2+dfsg1/debian/changelog	2018-07-25 04:35:56.000000000 +0000
+++ rustc-1.27.2+dfsg1/debian/changelog	2018-08-24 06:54:48.000000000 +0000
@@ -1,3 +1,12 @@
+rustc (1.27.2+dfsg1-1+rpi1) buster-staging; urgency=medium
+
+  [changes brought forward from 1.15.1+dfsg1-1~exp3+rpi1 by Peter Michael Green <plugwash@raspbian.org> at Wed, 15 Mar 2017 10:16:18 +0000]
+  * Build for armv6.
+  [changes introduced in 1.18.0+dfsg1-4+rpi1 by Peter Michael Green]
+  * Disable testsuite.
+
+ -- Raspbian forward porter <root@raspbian.org>  Fri, 24 Aug 2018 06:54:48 +0000
+
 rustc (1.27.2+dfsg1-1) unstable; urgency=medium
 
   [ Sylvestre Ledru ]
diff -Nru rustc-1.27.2+dfsg1/debian/rules rustc-1.27.2+dfsg1/debian/rules
--- rustc-1.27.2+dfsg1/debian/rules	2018-07-25 04:31:14.000000000 +0000
+++ rustc-1.27.2+dfsg1/debian/rules	2018-08-24 06:54:48.000000000 +0000
@@ -236,7 +236,7 @@
 		test "$$(stat -c %s "$$x")" -lt 6000000; \
 	done
 ifeq (, $(filter nocheck,$(DEB_BUILD_PROFILES)))
-ifeq (, $(filter nocheck,$(DEB_BUILD_OPTIONS)))
+ifeq (testsuitedisabled, $(filter nocheck,$(DEB_BUILD_OPTIONS)))
 	{ $(RUSTBUILD_TEST) --no-fail-fast $(RUSTBUILD_FLAGS) $(RUSTBUILD_TEST_FLAGS); echo $$?; } | tee -a $(TEST_LOG)
 	test -f $(TEST_LOG)
 	echo "==== Debian rustc test report ===="; \