diff --git a/build/spectests.rs b/build/spectests.rs
index 66274d9fb56..55f41df4673 100644
--- a/build/spectests.rs
+++ b/build/spectests.rs
@@ -205,7 +205,7 @@ impl WastTestGenerator {
 )]
 use wabt::wat2wasm;
 
-use crate::webassembly::{{instantiate, compile, ImportObject, ResultObject, Instance}};
+use crate::webassembly::{{instantiate, compile, ResultObject}};
 use crate::runtime::types::{{Value}};
 
 use super::_common::{{
diff --git a/emtests/localtime.output b/emtests/localtime.out
similarity index 100%
rename from emtests/localtime.output
rename to emtests/localtime.out
diff --git a/src/emtests/_common.rs b/src/emtests/_common.rs
index f69b299e5ec..a5c3ce1476c 100644
--- a/src/emtests/_common.rs
+++ b/src/emtests/_common.rs
@@ -3,10 +3,8 @@ macro_rules! assert_emscripten_output {
         use crate::apis::generate_emscripten_env;
         use crate::common::stdio::StdioCapturer;
         use crate::runtime::types::{ElementType, FuncSig, Table, Type, Value};
-        use crate::runtime::{Import, Imports};
-        use crate::webassembly::{
-            get_isa, instantiate, start_instance, InstanceABI, InstanceOptions,
-        };
+        use crate::runtime::{Import, Imports, InstanceABI, InstanceOptions};
+        use crate::webassembly::{get_isa, instantiate, start_instance};
         use std::sync::Arc;
 
         let wasm_bytes = include_bytes!($file);
diff --git a/src/emtests/localtime.rs b/src/emtests/localtime.rs
index 6ee4ad4069a..938c8b1591b 100644
--- a/src/emtests/localtime.rs
+++ b/src/emtests/localtime.rs
@@ -4,6 +4,6 @@ fn test_localtime() {
         "../../emtests/localtime.wasm",
         "localtime",
         vec![],
-        "../../emtests/localtime.output"
+        "../../emtests/localtime.out"
     );
 }
diff --git a/src/spectests/_common.rs b/src/spectests/_common.rs
index 8e1c7e3fe5b..d2424a3bbac 100644
--- a/src/spectests/_common.rs
+++ b/src/spectests/_common.rs
@@ -1,6 +1,5 @@
 use crate::runtime::types::{ElementType, FuncSig, Table, Type, Value};
 use crate::runtime::{Import, Imports, TableBacking};
-use crate::webassembly::{ImportObject, ImportValue};
 use std::sync::Arc;
 
 extern "C" fn print_i32(num: i32) {
diff --git a/src/spectests/address.rs b/src/spectests/address.rs
index 08c6607adcc..5c907cf1f0c 100644
--- a/src/spectests/address.rs
+++ b/src/spectests/address.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/align.rs b/src/spectests/align.rs
index 0443824db00..59596d4cb57 100644
--- a/src/spectests/align.rs
+++ b/src/spectests/align.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/binary.rs b/src/spectests/binary.rs
index 8342ae1bd0b..09411e1343d 100644
--- a/src/spectests/binary.rs
+++ b/src/spectests/binary.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/block.rs b/src/spectests/block.rs
index df91a5264c2..7e2911a3fcf 100644
--- a/src/spectests/block.rs
+++ b/src/spectests/block.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/br.rs b/src/spectests/br.rs
index 7be6e150855..f4188569278 100644
--- a/src/spectests/br.rs
+++ b/src/spectests/br.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/br_if.rs b/src/spectests/br_if.rs
index 0fffab1aa5f..d05d49c85d7 100644
--- a/src/spectests/br_if.rs
+++ b/src/spectests/br_if.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/br_table.rs b/src/spectests/br_table.rs
index 1e9e11ec35d..d680f8025c3 100644
--- a/src/spectests/br_table.rs
+++ b/src/spectests/br_table.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/break_drop.rs b/src/spectests/break_drop.rs
index 9dbe553028e..b59eb0f389d 100644
--- a/src/spectests/break_drop.rs
+++ b/src/spectests/break_drop.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/call.rs b/src/spectests/call.rs
index 44bb1912e75..5bc64d9bdff 100644
--- a/src/spectests/call.rs
+++ b/src/spectests/call.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/call_indirect.rs b/src/spectests/call_indirect.rs
index 5a762a38a7f..5873f5ce45c 100644
--- a/src/spectests/call_indirect.rs
+++ b/src/spectests/call_indirect.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/comments.rs b/src/spectests/comments.rs
index 3584b594425..cd71374d59b 100644
--- a/src/spectests/comments.rs
+++ b/src/spectests/comments.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/const_.rs b/src/spectests/const_.rs
index 14e75ddf75e..10675bb28af 100644
--- a/src/spectests/const_.rs
+++ b/src/spectests/const_.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/conversions.rs b/src/spectests/conversions.rs
index aca69c6f355..a5e97943efe 100644
--- a/src/spectests/conversions.rs
+++ b/src/spectests/conversions.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/custom.rs b/src/spectests/custom.rs
index eaf098c9833..621cd4d254e 100644
--- a/src/spectests/custom.rs
+++ b/src/spectests/custom.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/data.rs b/src/spectests/data.rs
index c3a99f09cfb..8ba17cf8800 100644
--- a/src/spectests/data.rs
+++ b/src/spectests/data.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/elem.rs b/src/spectests/elem.rs
index 2e6b3892185..99b102af929 100644
--- a/src/spectests/elem.rs
+++ b/src/spectests/elem.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/endianness.rs b/src/spectests/endianness.rs
index c73fd74123a..98831ac77b3 100644
--- a/src/spectests/endianness.rs
+++ b/src/spectests/endianness.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/exports.rs b/src/spectests/exports.rs
index d171f2e3099..2fbe40f851f 100644
--- a/src/spectests/exports.rs
+++ b/src/spectests/exports.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/f32_.rs b/src/spectests/f32_.rs
index 9897c03ccc4..17e73f7b2bd 100644
--- a/src/spectests/f32_.rs
+++ b/src/spectests/f32_.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/f32_bitwise.rs b/src/spectests/f32_bitwise.rs
index 7944a52cfec..a5a416774c0 100644
--- a/src/spectests/f32_bitwise.rs
+++ b/src/spectests/f32_bitwise.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/f32_cmp.rs b/src/spectests/f32_cmp.rs
index 4edeb613b2f..05e9efb5388 100644
--- a/src/spectests/f32_cmp.rs
+++ b/src/spectests/f32_cmp.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/f64_.rs b/src/spectests/f64_.rs
index a7969accf53..e9bff92570b 100644
--- a/src/spectests/f64_.rs
+++ b/src/spectests/f64_.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/f64_bitwise.rs b/src/spectests/f64_bitwise.rs
index 1ed4cc6dba4..31e0d64663b 100644
--- a/src/spectests/f64_bitwise.rs
+++ b/src/spectests/f64_bitwise.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/f64_cmp.rs b/src/spectests/f64_cmp.rs
index ce26c5389dc..c9ea11ff1d9 100644
--- a/src/spectests/f64_cmp.rs
+++ b/src/spectests/f64_cmp.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/fac.rs b/src/spectests/fac.rs
index d1a71d6181a..4c0ae9bd36b 100644
--- a/src/spectests/fac.rs
+++ b/src/spectests/fac.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/float_exprs.rs b/src/spectests/float_exprs.rs
index 19f7583b9c8..d0c0f498d1d 100644
--- a/src/spectests/float_exprs.rs
+++ b/src/spectests/float_exprs.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/float_literals.rs b/src/spectests/float_literals.rs
index 3da707fdb23..73ada71ea7d 100644
--- a/src/spectests/float_literals.rs
+++ b/src/spectests/float_literals.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/float_memory.rs b/src/spectests/float_memory.rs
index 997c48cfe4a..bf40c1bc5eb 100644
--- a/src/spectests/float_memory.rs
+++ b/src/spectests/float_memory.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/float_misc.rs b/src/spectests/float_misc.rs
index ea04c6217c1..b6c01427b15 100644
--- a/src/spectests/float_misc.rs
+++ b/src/spectests/float_misc.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/forward.rs b/src/spectests/forward.rs
index 365053a87f1..0d657df8edb 100644
--- a/src/spectests/forward.rs
+++ b/src/spectests/forward.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/func.rs b/src/spectests/func.rs
index 62c8dabdec9..2a6158753d5 100644
--- a/src/spectests/func.rs
+++ b/src/spectests/func.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/func_ptrs.rs b/src/spectests/func_ptrs.rs
index 88dc707ce8c..e427160e73b 100644
--- a/src/spectests/func_ptrs.rs
+++ b/src/spectests/func_ptrs.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/get_local.rs b/src/spectests/get_local.rs
index 089761c690c..0b944a34db7 100644
--- a/src/spectests/get_local.rs
+++ b/src/spectests/get_local.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/globals.rs b/src/spectests/globals.rs
index f1a72229fb1..16769f4daad 100644
--- a/src/spectests/globals.rs
+++ b/src/spectests/globals.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/i32_.rs b/src/spectests/i32_.rs
index bbf3ec18f63..a3f42d683a3 100644
--- a/src/spectests/i32_.rs
+++ b/src/spectests/i32_.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/i64_.rs b/src/spectests/i64_.rs
index ad35f3df7ed..bd8db84b614 100644
--- a/src/spectests/i64_.rs
+++ b/src/spectests/i64_.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/if_.rs b/src/spectests/if_.rs
index d39b62aadcb..5774030fa68 100644
--- a/src/spectests/if_.rs
+++ b/src/spectests/if_.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/int_exprs.rs b/src/spectests/int_exprs.rs
index e965ca61eb9..e342980d5d9 100644
--- a/src/spectests/int_exprs.rs
+++ b/src/spectests/int_exprs.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/int_literals.rs b/src/spectests/int_literals.rs
index d1f3b200d11..d4493b8e11d 100644
--- a/src/spectests/int_literals.rs
+++ b/src/spectests/int_literals.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/labels.rs b/src/spectests/labels.rs
index 0be51a9890f..39df40d684f 100644
--- a/src/spectests/labels.rs
+++ b/src/spectests/labels.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/left_to_right.rs b/src/spectests/left_to_right.rs
index d3c74e0871b..6a9ecb35d5b 100644
--- a/src/spectests/left_to_right.rs
+++ b/src/spectests/left_to_right.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/loop_.rs b/src/spectests/loop_.rs
index aa2243310ec..910f83172a8 100644
--- a/src/spectests/loop_.rs
+++ b/src/spectests/loop_.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/memory.rs b/src/spectests/memory.rs
index 114ffc5220f..5e818bf53c8 100644
--- a/src/spectests/memory.rs
+++ b/src/spectests/memory.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/memory_grow.rs b/src/spectests/memory_grow.rs
index 211565b5424..0a4e33cf418 100644
--- a/src/spectests/memory_grow.rs
+++ b/src/spectests/memory_grow.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/memory_redundancy.rs b/src/spectests/memory_redundancy.rs
index 1cebc84bfbe..dd6545d0538 100644
--- a/src/spectests/memory_redundancy.rs
+++ b/src/spectests/memory_redundancy.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/memory_trap.rs b/src/spectests/memory_trap.rs
index d302383f631..7f5e85a9b2c 100644
--- a/src/spectests/memory_trap.rs
+++ b/src/spectests/memory_trap.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/nop.rs b/src/spectests/nop.rs
index d49e47ea7c0..63378f86fb5 100644
--- a/src/spectests/nop.rs
+++ b/src/spectests/nop.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/return_.rs b/src/spectests/return_.rs
index ebdc5026e16..72177c2122c 100644
--- a/src/spectests/return_.rs
+++ b/src/spectests/return_.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/select.rs b/src/spectests/select.rs
index 4f8fbfc9fe9..288cc1b1a3f 100644
--- a/src/spectests/select.rs
+++ b/src/spectests/select.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/set_local.rs b/src/spectests/set_local.rs
index 72736b2afe1..2751fd4b673 100644
--- a/src/spectests/set_local.rs
+++ b/src/spectests/set_local.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/stack.rs b/src/spectests/stack.rs
index 152ab950ffd..6b59a6bdacc 100644
--- a/src/spectests/stack.rs
+++ b/src/spectests/stack.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/start.rs b/src/spectests/start.rs
index 4ce8f0349a9..5cd4f579db3 100644
--- a/src/spectests/start.rs
+++ b/src/spectests/start.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/store_retval.rs b/src/spectests/store_retval.rs
index 969b456af5e..9cbdb27bdc0 100644
--- a/src/spectests/store_retval.rs
+++ b/src/spectests/store_retval.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/switch.rs b/src/spectests/switch.rs
index 3850b897416..47bc0e39cba 100644
--- a/src/spectests/switch.rs
+++ b/src/spectests/switch.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/tee_local.rs b/src/spectests/tee_local.rs
index 96ef429888d..e1feeef06c9 100644
--- a/src/spectests/tee_local.rs
+++ b/src/spectests/tee_local.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/token.rs b/src/spectests/token.rs
index 5650a446496..6d79c63a694 100644
--- a/src/spectests/token.rs
+++ b/src/spectests/token.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/traps.rs b/src/spectests/traps.rs
index 899feee39df..5e748734464 100644
--- a/src/spectests/traps.rs
+++ b/src/spectests/traps.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/typecheck.rs b/src/spectests/typecheck.rs
index 07f0f9de690..7a2b7b464ff 100644
--- a/src/spectests/typecheck.rs
+++ b/src/spectests/typecheck.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/types.rs b/src/spectests/types.rs
index 18a6a734042..006118110dd 100644
--- a/src/spectests/types.rs
+++ b/src/spectests/types.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};
 
diff --git a/src/spectests/unwind.rs b/src/spectests/unwind.rs
index 0446ea36356..73bbce1d7ca 100644
--- a/src/spectests/unwind.rs
+++ b/src/spectests/unwind.rs
@@ -8,7 +8,7 @@
 use wabt::wat2wasm;
 
 use crate::runtime::types::Value;
-use crate::webassembly::{compile, instantiate, ImportObject, Instance, ResultObject};
+use crate::webassembly::{compile, instantiate, ResultObject};
 
 use super::_common::{spectest_importobject, NaNCheck};