diff --git a/tests/target/configs-where_density-compressed.rs b/tests/target/configs-where_density-compressed.rs
index 215c10c2d7a..deddbee459f 100644
--- a/tests/target/configs-where_density-compressed.rs
+++ b/tests/target/configs-where_density-compressed.rs
@@ -3,13 +3,10 @@
 
 trait Lorem {
     fn ipsum<Dolor>(dolor: Dolor) -> Sit
-    where
-        Dolor: Eq;
+    where Dolor: Eq;
 
     fn ipsum<Dolor>(dolor: Dolor) -> Sit
-    where
-        Dolor: Eq,
-    {
+    where Dolor: Eq {
         // body
     }
 }
diff --git a/tests/target/configs-where_density-compressed_if_empty.rs b/tests/target/configs-where_density-compressed_if_empty.rs
index 2a5da551f37..45f22eb602c 100644
--- a/tests/target/configs-where_density-compressed_if_empty.rs
+++ b/tests/target/configs-where_density-compressed_if_empty.rs
@@ -3,8 +3,7 @@
 
 trait Lorem {
     fn ipsum<Dolor>(dolor: Dolor) -> Sit
-    where
-        Dolor: Eq;
+    where Dolor: Eq;
 
     fn ipsum<Dolor>(dolor: Dolor) -> Sit
     where
diff --git a/tests/target/fn-custom-4.rs b/tests/target/fn-custom-4.rs
index c044becc782..297aae5123b 100644
--- a/tests/target/fn-custom-4.rs
+++ b/tests/target/fn-custom-4.rs
@@ -13,9 +13,7 @@ fn qux()
 }
 
 fn qux()
-where
-    X: TTTTTTTTTTTTTTTTTTTTTTTTTTTT,
-{
+where X: TTTTTTTTTTTTTTTTTTTTTTTTTTTT {
     baz();
 }
 
diff --git a/tests/target/fn_args_layout-block.rs b/tests/target/fn_args_layout-block.rs
index d61fc0b9e7b..c8847768e13 100644
--- a/tests/target/fn_args_layout-block.rs
+++ b/tests/target/fn_args_layout-block.rs
@@ -86,14 +86,12 @@ fn foo()
 {
 }
 
-fn foo()
-    -> (
+fn foo() -> (
     Loooooooooooooooooooooong,
     Reeeeeeeeeeeeeeeeeeeeeeeeturn,
     iiiiiiiiis,
     Looooooooooooooooong,
-)
-{
+) {
     foo();
 }
 
@@ -136,13 +134,11 @@ fn foo<L: Loooooooooooooooooooong, G: Geeeeeeeeeeneric, I: iiiiiiiiis, L: Looooo
     foo();
 }
 
-fn foo()
-    -> (
+fn foo() -> (
     Looooooooooooooooooooooooooong,
     Reeeeeeeeeeeeeeeeeeeeeeeeeeeeeturn,
     iiiiiiiiiiiiiis,
     Loooooooooooooooooooooong,
-)
-{
+) {
     foo();
 }
diff --git a/tests/target/long-fn-1.rs b/tests/target/long-fn-1.rs
index f94431965c2..c3d44de7c69 100644
--- a/tests/target/long-fn-1.rs
+++ b/tests/target/long-fn-1.rs
@@ -12,3 +12,10 @@ fn some_input(
     fn some_inpu(&mut self, input: Input, input_path: Option<PathBuf>) -> (Input, Option<PathBuf>) {
     }
 }
+
+// #1843
+#[allow(non_snake_case)]
+pub extern "C" fn Java_com_exonum_binding_storage_indices_ValueSetIndexProxy_nativeContainsByHash(
+) -> bool {
+    false
+}
diff --git a/tests/target/multiple.rs b/tests/target/multiple.rs
index a7d7957b478..6e61c82e5f6 100644
--- a/tests/target/multiple.rs
+++ b/tests/target/multiple.rs
@@ -151,16 +151,14 @@ fn main() {
     let s = expand(a, b);
 }
 
-fn deconstruct()
-    -> (
+fn deconstruct() -> (
     SocketAddr,
     Method,
     Headers,
     RequestUri,
     HttpVersion,
     AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA,
-)
-{
+) {
 }
 
 fn deconstruct(