diff -r fdd746757dda -r 71a92b4d0527 mozilla-reduce-rust-debuginfo.patch
--- a/mozilla-reduce-rust-debuginfo.patch	Sun Jan 24 11:01:55 2021 +0100
+++ b/mozilla-reduce-rust-debuginfo.patch	Thu Jan 28 23:39:24 2021 +0100
@@ -3,7 +3,7 @@
 # Date 1560754926 -7200
 #      Mon Jun 17 09:02:06 2019 +0200
 # Node ID 428161c3b9599083e1b8710eda1760f1f707ab11
-# Parent  f5e9431a99bb1d122ccd76411f08ac6f3236c19f
+# Parent  2a004fe4d56123f6e73a9436d1a290bbfc5e0b6b
 #Description: reduce the rust debuginfo level on selected architectures where
 # compiling with debuginfo=2 causes the OOM killer to interrupt the build on
 # launchpad builders. Initially this was only on 32 bit architectures, but with
@@ -12,20 +12,19 @@
 diff --git a/build/moz.configure/toolchain.configure b/build/moz.configure/toolchain.configure
 --- a/build/moz.configure/toolchain.configure
 +++ b/build/moz.configure/toolchain.configure
-@@ -2138,19 +2138,19 @@ imply_option("RUSTC_OPT_LEVEL", "2", whe
- def rustc_opt_level(opt_level_option, moz_optimize):
-     if opt_level_option:
-         return opt_level_option[0]
-     else:
-         return "1" if moz_optimize.optimize else "0"
+@@ -2145,18 +2145,19 @@ def rustc_opt_level(opt_level_option, mo
  
  
  @depends(
--    rustc_opt_level, debug_rust, "--enable-debug-symbols", "--enable-frame-pointers"
-+    rustc_opt_level, debug_rust, "--enable-debug-symbols", "--enable-frame-pointers", host
+     rustc_opt_level,
+     debug_rust,
+     target,
+     "--enable-debug-symbols",
+     "--enable-frame-pointers",
++    host,
  )
--def rust_compile_flags(opt_level, debug_rust, debug_symbols, frame_pointers):
-+def rust_compile_flags(opt_level, debug_rust, debug_symbols, frame_pointers, host):
+-def rust_compile_flags(opt_level, debug_rust, target, debug_symbols, frame_pointers):
++def rust_compile_flags(opt_level, debug_rust, target, debug_symbols, frame_pointers, host):
      # Cargo currently supports only two interesting profiles for building:
      # development and release. Those map (roughly) to --enable-debug and
      # --disable-debug in Gecko, respectively.
@@ -34,7 +33,7 @@
      # optimization level. Since Cargo only supports 2 profiles, we're in
      # a bit of a bind.
      #
-@@ -2163,16 +2163,18 @@ def rust_compile_flags(opt_level, debug_
+@@ -2169,16 +2170,18 @@ def rust_compile_flags(opt_level, debug_
  
      # opt-level=0 implies -C debug-assertions, which may not be desired
      # unless Rust debugging is enabled.