diff --git a/checks/mkDummySrcTests/custom-dummyrs/expected/benches/bench1.rs b/checks/mkDummySrcTests/custom-dummyrs/expected/benches/bench1.rs
index 4607b1c4..733851e0 100644
--- a/checks/mkDummySrcTests/custom-dummyrs/expected/benches/bench1.rs
+++ b/checks/mkDummySrcTests/custom-dummyrs/expected/benches/bench1.rs
@@ -1,10 +1,10 @@
-#![feature(no_core, lang_items, start)]
+#![feature(no_core, lang_items)]
 #[no_std]
 #[no_core]
 // #[no_gods]
 // #[no_masters]
 
-#[start]
-fn main(_: isize, _: *const *const u8) -> isize {
+#[no_mangle]
+extern "C" fn main(_: isize, _: *const *const u8) -> isize {
     0
 }
diff --git a/checks/mkDummySrcTests/custom-dummyrs/expected/benches/custom.rs b/checks/mkDummySrcTests/custom-dummyrs/expected/benches/custom.rs
index 4607b1c4..733851e0 100644
--- a/checks/mkDummySrcTests/custom-dummyrs/expected/benches/custom.rs
+++ b/checks/mkDummySrcTests/custom-dummyrs/expected/benches/custom.rs
@@ -1,10 +1,10 @@
-#![feature(no_core, lang_items, start)]
+#![feature(no_core, lang_items)]
 #[no_std]
 #[no_core]
 // #[no_gods]
 // #[no_masters]
 
-#[start]
-fn main(_: isize, _: *const *const u8) -> isize {
+#[no_mangle]
+extern "C" fn main(_: isize, _: *const *const u8) -> isize {
     0
 }
diff --git a/checks/mkDummySrcTests/custom-dummyrs/expected/examples/custom.rs b/checks/mkDummySrcTests/custom-dummyrs/expected/examples/custom.rs
index 4607b1c4..733851e0 100644
--- a/checks/mkDummySrcTests/custom-dummyrs/expected/examples/custom.rs
+++ b/checks/mkDummySrcTests/custom-dummyrs/expected/examples/custom.rs
@@ -1,10 +1,10 @@
-#![feature(no_core, lang_items, start)]
+#![feature(no_core, lang_items)]
 #[no_std]
 #[no_core]
 // #[no_gods]
 // #[no_masters]
 
-#[start]
-fn main(_: isize, _: *const *const u8) -> isize {
+#[no_mangle]
+extern "C" fn main(_: isize, _: *const *const u8) -> isize {
     0
 }
diff --git a/checks/mkDummySrcTests/custom-dummyrs/expected/examples/example1.rs b/checks/mkDummySrcTests/custom-dummyrs/expected/examples/example1.rs
index 4607b1c4..733851e0 100644
--- a/checks/mkDummySrcTests/custom-dummyrs/expected/examples/example1.rs
+++ b/checks/mkDummySrcTests/custom-dummyrs/expected/examples/example1.rs
@@ -1,10 +1,10 @@
-#![feature(no_core, lang_items, start)]
+#![feature(no_core, lang_items)]
 #[no_std]
 #[no_core]
 // #[no_gods]
 // #[no_masters]
 
-#[start]
-fn main(_: isize, _: *const *const u8) -> isize {
+#[no_mangle]
+extern "C" fn main(_: isize, _: *const *const u8) -> isize {
     0
 }
diff --git a/checks/mkDummySrcTests/custom-dummyrs/expected/src/bin/bin1.rs b/checks/mkDummySrcTests/custom-dummyrs/expected/src/bin/bin1.rs
index 4607b1c4..733851e0 100644
--- a/checks/mkDummySrcTests/custom-dummyrs/expected/src/bin/bin1.rs
+++ b/checks/mkDummySrcTests/custom-dummyrs/expected/src/bin/bin1.rs
@@ -1,10 +1,10 @@
-#![feature(no_core, lang_items, start)]
+#![feature(no_core, lang_items)]
 #[no_std]
 #[no_core]
 // #[no_gods]
 // #[no_masters]
 
-#[start]
-fn main(_: isize, _: *const *const u8) -> isize {
+#[no_mangle]
+extern "C" fn main(_: isize, _: *const *const u8) -> isize {
     0
 }
diff --git a/checks/mkDummySrcTests/custom-dummyrs/expected/src/bin/custom.rs b/checks/mkDummySrcTests/custom-dummyrs/expected/src/bin/custom.rs
index 4607b1c4..733851e0 100644
--- a/checks/mkDummySrcTests/custom-dummyrs/expected/src/bin/custom.rs
+++ b/checks/mkDummySrcTests/custom-dummyrs/expected/src/bin/custom.rs
@@ -1,10 +1,10 @@
-#![feature(no_core, lang_items, start)]
+#![feature(no_core, lang_items)]
 #[no_std]
 #[no_core]
 // #[no_gods]
 // #[no_masters]
 
-#[start]
-fn main(_: isize, _: *const *const u8) -> isize {
+#[no_mangle]
+extern "C" fn main(_: isize, _: *const *const u8) -> isize {
     0
 }
diff --git a/checks/mkDummySrcTests/custom-dummyrs/expected/src/lib.rs b/checks/mkDummySrcTests/custom-dummyrs/expected/src/lib.rs
index 4607b1c4..733851e0 100644
--- a/checks/mkDummySrcTests/custom-dummyrs/expected/src/lib.rs
+++ b/checks/mkDummySrcTests/custom-dummyrs/expected/src/lib.rs
@@ -1,10 +1,10 @@
-#![feature(no_core, lang_items, start)]
+#![feature(no_core, lang_items)]
 #[no_std]
 #[no_core]
 // #[no_gods]
 // #[no_masters]
 
-#[start]
-fn main(_: isize, _: *const *const u8) -> isize {
+#[no_mangle]
+extern "C" fn main(_: isize, _: *const *const u8) -> isize {
     0
 }
diff --git a/checks/mkDummySrcTests/custom-dummyrs/expected/tests/custom.rs b/checks/mkDummySrcTests/custom-dummyrs/expected/tests/custom.rs
index 4607b1c4..733851e0 100644
--- a/checks/mkDummySrcTests/custom-dummyrs/expected/tests/custom.rs
+++ b/checks/mkDummySrcTests/custom-dummyrs/expected/tests/custom.rs
@@ -1,10 +1,10 @@
-#![feature(no_core, lang_items, start)]
+#![feature(no_core, lang_items)]
 #[no_std]
 #[no_core]
 // #[no_gods]
 // #[no_masters]
 
-#[start]
-fn main(_: isize, _: *const *const u8) -> isize {
+#[no_mangle]
+extern "C" fn main(_: isize, _: *const *const u8) -> isize {
     0
 }
diff --git a/checks/mkDummySrcTests/custom-dummyrs/expected/tests/test1.rs b/checks/mkDummySrcTests/custom-dummyrs/expected/tests/test1.rs
index 4607b1c4..733851e0 100644
--- a/checks/mkDummySrcTests/custom-dummyrs/expected/tests/test1.rs
+++ b/checks/mkDummySrcTests/custom-dummyrs/expected/tests/test1.rs
@@ -1,10 +1,10 @@
-#![feature(no_core, lang_items, start)]
+#![feature(no_core, lang_items)]
 #[no_std]
 #[no_core]
 // #[no_gods]
 // #[no_masters]
 
-#[start]
-fn main(_: isize, _: *const *const u8) -> isize {
+#[no_mangle]
+extern "C" fn main(_: isize, _: *const *const u8) -> isize {
     0
 }
diff --git a/checks/mkDummySrcTests/default.nix b/checks/mkDummySrcTests/default.nix
index c3cd6dbe..50b05cc1 100644
--- a/checks/mkDummySrcTests/default.nix
+++ b/checks/mkDummySrcTests/default.nix
@@ -86,14 +86,14 @@ let
     doCompare "customized-dummyrs" expected (mkDummySrc {
       src = input;
       dummyrs = writeText "dummy.rs" ''
-        #![feature(no_core, lang_items, start)]
+        #![feature(no_core, lang_items)]
         #[no_std]
         #[no_core]
         // #[no_gods]
         // #[no_masters]
 
-        #[start]
-        fn main(_: isize, _: *const *const u8) -> isize {
+        #[no_mangle]
+        extern "C" fn main(_: isize, _: *const *const u8) -> isize {
             0
         }
       '';