diff -rauN firefox-74.0.1/config/makefiles/rust.mk firefox-74.0.1-rust-static-disable-network-test-on-static-libraries-patch/config/makefiles/rust.mk
--- firefox-74.0.1/config/makefiles/rust.mk	2020-04-03 13:10:23.000000000 +0200
+++ firefox-74.0.1-rust-static-disable-network-test-on-static-libraries-patch/config/makefiles/rust.mk	2020-04-04 12:31:27.804227950 +0200
@@ -283,17 +283,17 @@
 # the chance of proxy bypasses originating from rust code.
 # The check only works when rust code is built with -Clto.
 # Enabling sancov or TSan also causes this to fail.
-ifndef MOZ_PROFILE_GENERATE
-ifndef MOZ_TSAN
-ifeq ($(OS_ARCH), Linux)
-ifeq (,$(rustflags_sancov))
-ifneq (,$(filter -Clto,$(cargo_rustc_flags)))
-	$(call py_action,check_binary,--target --networking $@)
-endif
-endif
-endif
-endif
-endif
+#ifndef MOZ_PROFILE_GENERATE
+#ifndef MOZ_TSAN
+#ifeq ($(OS_ARCH), Linux)
+#ifeq (,$(rustflags_sancov))
+#ifneq (,$(filter -Clto,$(cargo_rustc_flags)))
+#	$(call py_action,check_binary,--target --networking $@)
+#endif
+#endif
+#endif
+#endif
+#endif
 
 force-cargo-library-check:
 	$(call CARGO_CHECK) --lib $(cargo_target_flag) $(rust_features_flag)