diff -Nru firefox-esr-60.3.0esr/debian/changelog firefox-esr-60.3.0esr/debian/changelog
--- firefox-esr-60.3.0esr/debian/changelog	2018-10-23 22:08:43.000000000 +0000
+++ firefox-esr-60.3.0esr/debian/changelog	2018-12-05 06:56:52.000000000 +0000
@@ -1,3 +1,10 @@
+firefox-esr (60.3.0esr-1+rpi1) buster-staging; urgency=medium
+  * Hack broken rust target selection so it produces the right target
+    on raspbian.
+  * Fix clean target.
+
+ -- Peter Michael Green <plugwash@raspbian.org>  Wed, 05 Dec 2018 06:56:52 +0000
+
 firefox-esr (60.3.0esr-1) unstable; urgency=medium
 
   * New upstream release.
diff -Nru firefox-esr-60.3.0esr/debian/patches/raspbian-rust-triplet-hack.patch firefox-esr-60.3.0esr/debian/patches/raspbian-rust-triplet-hack.patch
--- firefox-esr-60.3.0esr/debian/patches/raspbian-rust-triplet-hack.patch	1970-01-01 00:00:00.000000000 +0000
+++ firefox-esr-60.3.0esr/debian/patches/raspbian-rust-triplet-hack.patch	2018-12-05 06:56:52.000000000 +0000
@@ -0,0 +1,56 @@
+Description:  Hack broken rust target selection so it produces the right target on raspbian.
+Author: Peter Michael Green <plugwash@raspbian.org>
+
+Index: firefox-esr-60.3.0esr.new/build/moz.configure/rust.configure
+===================================================================
+--- firefox-esr-60.3.0esr.new.orig/build/moz.configure/rust.configure
++++ firefox-esr-60.3.0esr.new/build/moz.configure/rust.configure
+@@ -111,6 +111,8 @@ def rust_compiler(rustc_info, cargo_info
+ 
+ 
+ @depends(rustc, when=rust_compiler)
++@imports('sys')
++@imports(_from='__builtin__', _import='repr')
+ def rust_supported_targets(rustc):
+     out = check_cmd_output(rustc, '--print', 'target-list').splitlines()
+     # The os in the triplets used by rust may match the same OSes, in which
+@@ -118,9 +120,14 @@ def rust_supported_targets(rustc):
+     per_os = {}
+     ambiguous = set()
+     per_raw_os = {}
++    #HACK: if there are multiple matches the algorithm uses the last one
++    #put arm-unknown-linux-gnuebihf on the end of the list so it gets preffered
++    out.append('arm-unknown-linux-gnueabihf')
+     for t in out:
++        traw = t
+         t = split_triplet(t, allow_unknown=True)
+         key = (t.cpu, t.endianness, t.os)
++        sys.stdout.write(traw+' '+repr(key)+' '+repr(t.raw_os)+'\n')
+         if key in per_os:
+             previous = per_os[key]
+             per_raw_os[(previous.cpu, previous.endianness,
+@@ -152,11 +159,13 @@ def rust_triple_alias(host_or_target):
+     @depends(rustc, host_or_target, c_compiler, rust_supported_targets,
+              when=rust_compiler)
+     @imports('os')
++    @imports('sys')
+     @imports('subprocess')
+     @imports(_from='mozbuild.configure.util', _import='LineIO')
+     @imports(_from='mozbuild.shellutil', _import='quote')
+     @imports(_from='tempfile', _import='mkstemp')
+     @imports(_from='textwrap', _import='dedent')
++    @imports(_from='__builtin__', _import='repr')
+     def rust_target(rustc, host_or_target, compiler_info,
+                     rust_supported_targets):
+         # Rust's --target options are similar to, but not exactly the same
+@@ -180,8 +189,9 @@ def rust_triple_alias(host_or_target):
+ 
+         rustc_target = rust_supported_targets.per_os.get(
+             (host_or_target.cpu, host_or_target.endianness, host_or_target_os))
+-
++        #sys.stdout.write(host_or_target.cpu+'\n')
+         if rustc_target is None:
++            sys.stdout.write('using per_raw_os.get with tuple '+repr(((host_or_target.cpu, host_or_target.endianness,host_or_target_raw_os)))+'\n')
+             rustc_target = rust_supported_targets.per_raw_os.get(
+                 (host_or_target.cpu, host_or_target.endianness,
+                  host_or_target_raw_os))
diff -Nru firefox-esr-60.3.0esr/debian/patches/series firefox-esr-60.3.0esr/debian/patches/series
--- firefox-esr-60.3.0esr/debian/patches/series	2018-10-23 22:06:14.000000000 +0000
+++ firefox-esr-60.3.0esr/debian/patches/series	2018-12-05 06:56:52.000000000 +0000
@@ -28,3 +28,4 @@
 debian-hacks/Only-build-webrtc-neon-on-aarch64.patch
 debian-hacks/Avoid-using-vmrs-vmsr-on-armel.patch
 debian-hacks/Use-remoting-name-for-call-to-gdk_set_program_class.patch
+raspbian-rust-triplet-hack.patch
diff -Nru firefox-esr-60.3.0esr/debian/rules firefox-esr-60.3.0esr/debian/rules
--- firefox-esr-60.3.0esr/debian/rules	2018-10-23 22:08:03.000000000 +0000
+++ firefox-esr-60.3.0esr/debian/rules	2018-12-05 06:56:52.000000000 +0000
@@ -260,6 +260,10 @@
 	rm -f $(filter-out debian/control,$(GENERATED_FILES))
 	rm -f configure js/src/configure old-configure js/src/old-configure
 	rm -rf stamps l10n
+	find third_party/python/psutil/tmp/ ! -name 'tmpoJXh06.o' -type f -exec rm -f {} +
+	rm -f third_party/python/psutil/psutil/*.so
+	rm -rf third_party/python/psutil/build/temp*
+	rm -rf third_party/python/psutil/build/lib*
 	debian/rules debian/control TESTDIR=
 
 ifeq ($(DEB_HOST_ARCH_ENDIAN),big)
@@ -275,6 +279,7 @@
 			sed -i '2!b;/^exec "/ d' $$dir/$$file; \
 		done; \
 	done
+	rm -rf build-browser
 
 override_dh_clean:
 	dh_clean -XCargo.toml.orig