+--- firefox-78.2.0/build/moz.configure/rust.configure.orig 2020-08-17 20:33:34.000000000 +0200
++++ firefox-78.2.0/build/moz.configure/rust.configure 2020-10-07 18:29:15.458050574 +0200
+@@ -406,16 +406,6 @@
+ rust_host_triple = rust_triple_alias(host, host_c_compiler)
+
+
+-@depends(host, rust_host_triple, rustc_info.host)
+-def validate_rust_host_triple(host, rust_host, rustc_host):
+- if rust_host != rustc_host:
+- if host.alias == rust_host:
+- configure_host = host.alias
+- else:
+- configure_host = '{}/{}'.format(host.alias, rust_host)
+- die("The rust compiler host ({}) is not suitable for the configure host ({})."
+- .format(rustc_host, configure_host))
+-
+
+ set_config('RUST_TARGET', rust_target_triple)
+ set_config('RUST_HOST_TARGET', rust_host_triple)