diff --git a/CHANGELOG.md b/CHANGELOG.md
index 20432fe83..d42122a61 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@ Blocks of changes will separated by version increments.
 
 ## **[Unreleased]**
 
+- [#829](https://github.com/wasmerio/wasmer/pull/829) Fix deps on `make bench-*` commands; benchmarks don't compile other backends now
 - [#807](https://github.com/wasmerio/wasmer/pull/807) Implement Send for `Instance`, breaking change on `ImportObject`, remove method `get_namespace` replaced with `with_namespace` and `maybe_with_namespace`
 - [#817](https://github.com/wasmerio/wasmer/pull/817) Add document for tracking features across backends and language integrations, [docs/feature_matrix.md]
 - [#823](https://github.com/wasmerio/wasmer/issues/823) Improved Emscripten / WASI integration
diff --git a/Cargo.lock b/Cargo.lock
index 3d8c85a48..223ef76ac 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -70,7 +70,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "autocfg 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.100 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -118,7 +118,7 @@ dependencies = [
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "memchr 2.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex-automata 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.100 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -156,8 +156,8 @@ name = "cargo_toml"
 version = "0.6.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "serde 1.0.100 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_derive 1.0.100 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_derive 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
  "toml 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -175,7 +175,7 @@ dependencies = [
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc-macro2 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.100 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.40 (registry+https://github.com/rust-lang/crates.io-index)",
  "syn 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "tempfile 3.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -309,8 +309,8 @@ dependencies = [
  "rand_xoshiro 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rayon 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rayon-core 1.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.100 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_derive 1.0.100 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_derive 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.40 (registry+https://github.com/rust-lang/crates.io-index)",
  "tinytemplate 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "walkdir 2.2.9 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -374,7 +374,7 @@ dependencies = [
  "csv-core 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "itoa 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "ryu 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.100 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -457,7 +457,7 @@ name = "erased-serde"
 version = "0.3.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "serde 1.0.100 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -528,7 +528,7 @@ version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.100 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -605,7 +605,7 @@ name = "indexmap"
 version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "serde 1.0.100 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1129,10 +1129,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "serde"
-version = "1.0.100"
+version = "1.0.101"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "serde_derive 1.0.100 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_derive 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1141,7 +1141,7 @@ version = "0.0.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.100 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1149,12 +1149,12 @@ name = "serde_bytes"
 version = "0.11.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "serde 1.0.100 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "serde_derive"
-version = "1.0.100"
+version = "1.0.101"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1169,7 +1169,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "itoa 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "ryu 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.100 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1194,16 +1194,16 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "structopt"
-version = "0.3.1"
+version = "0.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "clap 2.33.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "structopt-derive 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "structopt-derive 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "structopt-derive"
-version = "0.3.1"
+version = "0.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "heck 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1329,7 +1329,7 @@ name = "tinytemplate"
 version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "serde 1.0.100 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.40 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1338,7 +1338,7 @@ name = "toml"
 version = "0.4.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "serde 1.0.100 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1346,7 +1346,7 @@ name = "toml"
 version = "0.5.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "serde 1.0.100 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1362,7 +1362,7 @@ dependencies = [
  "erased-serde 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "inventory 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.100 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
  "typetag-impl 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1421,8 +1421,8 @@ name = "wabt"
 version = "0.9.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "serde 1.0.100 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_derive 1.0.100 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_derive 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.40 (registry+https://github.com/rust-lang/crates.io-index)",
  "wabt-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1460,8 +1460,8 @@ dependencies = [
  "errno 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "glob 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.100 (registry+https://github.com/rust-lang/crates.io-index)",
- "structopt 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
+ "structopt 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "typetag 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "wabt 0.9.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "wasmer-clif-backend 0.7.0",
@@ -1490,10 +1490,10 @@ dependencies = [
  "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
  "nix 0.15.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rayon 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.100 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde-bench 0.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_bytes 0.11.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_derive 1.0.100 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_derive 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
  "target-lexicon 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "wasmer-clif-fork-frontend 0.33.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "wasmer-clif-fork-wasm 0.33.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1653,10 +1653,10 @@ dependencies = [
  "page_size 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.100 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde-bench 0.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_bytes 0.11.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_derive 1.0.100 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_derive 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
  "smallvec 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "wasmparser 0.35.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1699,7 +1699,7 @@ dependencies = [
  "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.100 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
  "time 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
  "typetag 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "wasmer-runtime-core 0.7.0",
@@ -1923,17 +1923,17 @@ dependencies = [
 "checksum scroll_derive 0.9.5 (registry+https://github.com/rust-lang/crates.io-index)" = "8f1aa96c45e7f5a91cb7fabe7b279f02fea7126239fc40b732316e8b6a2d0fcb"
 "checksum semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1d7eb9ef2c18661902cc47e535f9bc51b78acd254da71d375c2f6720d9a40403"
 "checksum semver-parser 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
-"checksum serde 1.0.100 (registry+https://github.com/rust-lang/crates.io-index)" = "f4473e8506b213730ff2061073b48fa51dcc66349219e2e7c5608f0296a1d95a"
+"checksum serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)" = "9796c9b7ba2ffe7a9ce53c2287dfc48080f4b2b362fcc245a259b3a7201119dd"
 "checksum serde-bench 0.0.7 (registry+https://github.com/rust-lang/crates.io-index)" = "d733da87e79faaac25616e33d26299a41143fd4cd42746cbb0e91d8feea243fd"
 "checksum serde_bytes 0.11.2 (registry+https://github.com/rust-lang/crates.io-index)" = "45af0182ff64abaeea290235eb67da3825a576c5d53e642c4d5b652e12e6effc"
-"checksum serde_derive 1.0.100 (registry+https://github.com/rust-lang/crates.io-index)" = "11e410fde43e157d789fc290d26bc940778ad0fdd47836426fbac36573710dbb"
+"checksum serde_derive 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)" = "4b133a43a1ecd55d4086bd5b4dc6c1751c68b1bfbeba7a5040442022c7e7c02e"
 "checksum serde_json 1.0.40 (registry+https://github.com/rust-lang/crates.io-index)" = "051c49229f282f7c6f3813f8286cc1e3323e8051823fce42c7ea80fe13521704"
 "checksum shlex 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "7fdf1b9db47230893d76faad238fd6097fd6d6a9245cd7a4d90dbd639536bbd2"
 "checksum smallvec 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)" = "ab606a9c5e214920bb66c458cd7be8ef094f813f20fe77a54cc7dbfff220d4b7"
 "checksum stable_deref_trait 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "dba1a27d3efae4351c8051072d619e3ade2820635c3958d826bfea39d59b54c8"
 "checksum strsim 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8ea5119cdb4c55b55d432abb513a0429384878c15dde60cc77b1c99de1a95a6a"
-"checksum structopt 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "2ac9d6e93dd792b217bf89cda5c14566e3043960c6f9da890c2ba5d09d07804c"
-"checksum structopt-derive 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "2ae9e5165d463a0dea76967d021f8d0f9316057bf5163aa2a4843790e842ff37"
+"checksum structopt 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "3fe8d3289b63ef2f196d89e7701f986583c0895e764b78f052a55b9b5d34d84a"
+"checksum structopt-derive 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "f3add731f5b4fb85931d362a3c92deb1ad7113649a8d51701fb257673705f122"
 "checksum syn 0.11.11 (registry+https://github.com/rust-lang/crates.io-index)" = "d3b891b9015c88c576343b9b3e41c2c11a51c219ef067b264bd9c8aa9b441dad"
 "checksum syn 0.15.44 (registry+https://github.com/rust-lang/crates.io-index)" = "9ca4b3b69a77cbe1ffc9e198781b7acb0c7365a883670e8f1c1bc66fba79a5c5"
 "checksum syn 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)" = "66850e97125af79138385e9b88339cbcd037e3f28ceab8c5ad98e64f0f1f80bf"
diff --git a/Makefile b/Makefile
index 905b54190..89210b9b0 100644
--- a/Makefile
+++ b/Makefile
@@ -140,11 +140,15 @@ install:
 
 # Checks
 check-bench-singlepass:
-	cargo bench --all --no-run --no-default-features --features "backend-singlepass"
+	cargo bench --all --no-run --no-default-features --features "backend-singlepass" \
+	--exclude wasmer-clif-backend --exclude wasmer-llvm-backend --exclude wasmer-kernel-loader
 check-bench-clif:
-	cargo bench --all --no-run --no-default-features --features "backend-cranelift"
+	cargo bench --all --no-run --no-default-features --features "backend-cranelift" \
+	--exclude wasmer-singlepass-backend --exclude wasmer-llvm-backend --exclude wasmer-kernel-loader \
+	--exclude wasmer-middleware-common-tests
 check-bench-llvm:
-	cargo bench --all --no-run --no-default-features --features "backend-llvm"
+	cargo bench --all --no-run --no-default-features --features "backend-llvm" \
+	--exclude wasmer-singlepass-backend --exclude wasmer-clif-backend --exclude wasmer-kernel-loader
 
 check-bench: check-bench-singlepass check-bench-llvm
 
@@ -168,11 +172,15 @@ release-llvm:
 	cargo build --release --features backend-llvm
 
 bench-singlepass:
-	cargo bench --all --no-default-features --features "backend-singlepass"
+	cargo bench --all --no-default-features --features "backend-singlepass" \
+	--exclude wasmer-clif-backend --exclude wasmer-llvm-backend --exclude wasmer-kernel-loader
 bench-clif:
-	cargo bench --all --no-default-features --features "backend-cranelift"
+	cargo bench --all --no-default-features --features "backend-cranelift" \
+	--exclude wasmer-singlepass-backend --exclude wasmer-llvm-backend --exclude wasmer-kernel-loader \
+	--exclude wasmer-middleware-common-tests
 bench-llvm:
-	cargo bench --all --no-default-features --features "backend-llvm"
+	cargo bench --all --no-default-features --features "backend-llvm" \
+	--exclude wasmer-singlepass-backend --exclude wasmer-clif-backend --exclude wasmer-kernel-loader
 
 # Build utils
 build-install:
diff --git a/lib/emscripten/src/lib.rs b/lib/emscripten/src/lib.rs
index e0be391a7..7dc808bde 100644
--- a/lib/emscripten/src/lib.rs
+++ b/lib/emscripten/src/lib.rs
@@ -474,11 +474,7 @@ impl EmscriptenGlobals {
         let (memory_min, memory_max, shared) = get_emscripten_memory_size(&module)?;
 
         // Memory initialization
-        let memory_type = MemoryDescriptor {
-            minimum: memory_min,
-            maximum: memory_max,
-            shared: shared,
-        };
+        let memory_type = MemoryDescriptor::new(memory_min, memory_max, shared)?;
         let memory = Memory::new(memory_type).unwrap();
 
         let table_type = TableDescriptor {
diff --git a/lib/runtime-c-api/src/memory.rs b/lib/runtime-c-api/src/memory.rs
index 4628d8baa..21f14bbf7 100644
--- a/lib/runtime-c-api/src/memory.rs
+++ b/lib/runtime-c-api/src/memory.rs
@@ -1,6 +1,6 @@
 //! Create, read, write, grow, destroy memory of an instance.
 
-use crate::{error::update_last_error, wasmer_limits_t, wasmer_result_t};
+use crate::{error::update_last_error, error::CApiError, wasmer_limits_t, wasmer_result_t};
 use std::cell::Cell;
 use wasmer_runtime::Memory;
 use wasmer_runtime_core::{
@@ -31,12 +31,17 @@ pub unsafe extern "C" fn wasmer_memory_new(
     } else {
         None
     };
-    let desc = MemoryDescriptor {
-        minimum: Pages(limits.min),
-        maximum: max,
-        shared: false,
+    let desc = MemoryDescriptor::new(Pages(limits.min), max, false);
+    let new_desc = match desc {
+        Ok(desc) => desc,
+        Err(error) => {
+            update_last_error(CApiError {
+                msg: error.to_string(),
+            });
+            return wasmer_result_t::WASMER_ERROR;
+        }
     };
-    let result = Memory::new(desc);
+    let result = Memory::new(new_desc);
     let new_memory = match result {
         Ok(memory) => memory,
         Err(error) => {
diff --git a/lib/runtime-core/src/memory/mod.rs b/lib/runtime-core/src/memory/mod.rs
index 114f14917..60fb87c4d 100644
--- a/lib/runtime-core/src/memory/mod.rs
+++ b/lib/runtime-core/src/memory/mod.rs
@@ -50,16 +50,12 @@ impl Memory {
     /// # use wasmer_runtime_core::memory::Memory;
     /// # use wasmer_runtime_core::error::Result;
     /// # use wasmer_runtime_core::units::Pages;
-    /// # fn create_memory() -> Result<()> {
-    /// let descriptor = MemoryDescriptor {
-    ///     minimum: Pages(10),
-    ///     maximum: None,
-    ///     shared: false,
-    /// };
+    /// fn create_memory() -> Result<()> {
+    ///     let descriptor = MemoryDescriptor::new(Pages(10), None, false).unwrap();
     ///
-    /// let memory = Memory::new(descriptor)?;
-    /// # Ok(())
-    /// # }
+    ///     let memory = Memory::new(descriptor)?;
+    ///     Ok(())
+    /// }
     /// ```
     pub fn new(desc: MemoryDescriptor) -> Result<Self, CreationError> {
         if let Some(max) = desc.maximum {
@@ -174,7 +170,7 @@ impl fmt::Debug for Memory {
     }
 }
 
-#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+#[derive(Serialize, Deserialize, Debug, Clone, Copy, PartialEq, Eq, Hash)]
 pub enum MemoryType {
     Dynamic,
     Static,
@@ -232,7 +228,11 @@ impl UnsharedMemory {
             MemoryType::Static => {
                 UnsharedMemoryStorage::Static(StaticMemory::new(desc, &mut local)?)
             }
-            MemoryType::SharedStatic => panic!("attempting to create shared unshared memory"),
+            MemoryType::SharedStatic => {
+                return Err(CreationError::InvalidDescriptor(
+                    "attempting to create shared unshared memory".to_string(),
+                ));
+            }
         };
 
         Ok(Self {
@@ -350,24 +350,16 @@ mod memory_tests {
 
     #[test]
     fn test_initial_memory_size() {
-        let unshared_memory = Memory::new(MemoryDescriptor {
-            minimum: Pages(10),
-            maximum: Some(Pages(20)),
-            shared: false,
-        })
-        .unwrap();
+        let memory_desc = MemoryDescriptor::new(Pages(10), Some(Pages(20)), false).unwrap();
+        let unshared_memory = Memory::new(memory_desc).unwrap();
         assert_eq!(unshared_memory.size(), Pages(10));
     }
 
     #[test]
     fn test_invalid_descriptor_returns_error() {
-        let result = Memory::new(MemoryDescriptor {
-            minimum: Pages(10),
-            maximum: None,
-            shared: true,
-        });
+        let memory_desc = MemoryDescriptor::new(Pages(10), None, true);
         assert!(
-            result.is_err(),
+            memory_desc.is_err(),
             "Max number of pages is required for shared memory"
         )
     }
diff --git a/lib/runtime-core/src/parse.rs b/lib/runtime-core/src/parse.rs
index b2ad3051e..e3e2c162e 100644
--- a/lib/runtime-core/src/parse.rs
+++ b/lib/runtime-core/src/parse.rs
@@ -136,11 +136,13 @@ pub fn read_module<
                             .push((import_name, table_desc));
                     }
                     ImportSectionEntryType::Memory(memory_ty) => {
-                        let mem_desc = MemoryDescriptor {
-                            minimum: Pages(memory_ty.limits.initial),
-                            maximum: memory_ty.limits.maximum.map(|max| Pages(max)),
-                            shared: memory_ty.shared,
-                        };
+                        let mem_desc = MemoryDescriptor::new(
+                            Pages(memory_ty.limits.initial),
+                            memory_ty.limits.maximum.map(|max| Pages(max)),
+                            memory_ty.shared,
+                        )
+                        .map_err(|x| LoadError::Codegen(format!("{:?}", x)))?;
+
                         info.write()
                             .unwrap()
                             .imported_memories
@@ -172,11 +174,12 @@ pub fn read_module<
                 info.write().unwrap().tables.push(table_desc);
             }
             ParserState::MemorySectionEntry(memory_ty) => {
-                let mem_desc = MemoryDescriptor {
-                    minimum: Pages(memory_ty.limits.initial),
-                    maximum: memory_ty.limits.maximum.map(|max| Pages(max)),
-                    shared: memory_ty.shared,
-                };
+                let mem_desc = MemoryDescriptor::new(
+                    Pages(memory_ty.limits.initial),
+                    memory_ty.limits.maximum.map(|max| Pages(max)),
+                    memory_ty.shared,
+                )
+                .map_err(|x| LoadError::Codegen(format!("{:?}", x)))?;
 
                 info.write().unwrap().memories.push(mem_desc);
             }
diff --git a/lib/runtime-core/src/types.rs b/lib/runtime-core/src/types.rs
index ab7c023a8..bea89ffe3 100644
--- a/lib/runtime-core/src/types.rs
+++ b/lib/runtime-core/src/types.rs
@@ -326,7 +326,7 @@ pub struct GlobalInit {
     pub init: Initializer,
 }
 
-/// A wasm memory.
+/// A wasm memory descriptor.
 #[derive(Serialize, Deserialize, Debug, Clone, Copy, PartialEq, Eq)]
 pub struct MemoryDescriptor {
     /// The minimum number of allowed pages.
@@ -335,16 +335,30 @@ pub struct MemoryDescriptor {
     pub maximum: Option<Pages>,
     /// This memory can be shared between wasm threads.
     pub shared: bool,
+    /// The type of the memory
+    pub memory_type: MemoryType,
 }
 
 impl MemoryDescriptor {
-    pub fn memory_type(self) -> MemoryType {
-        match (self.maximum.is_some(), self.shared) {
+    pub fn new(minimum: Pages, maximum: Option<Pages>, shared: bool) -> Result<Self, String> {
+        let memory_type = match (maximum.is_some(), shared) {
             (true, true) => MemoryType::SharedStatic,
             (true, false) => MemoryType::Static,
             (false, false) => MemoryType::Dynamic,
-            (false, true) => panic!("shared memory without a max is not allowed"),
-        }
+            (false, true) => {
+                return Err("Max number of pages is required for shared memory".to_string());
+            }
+        };
+        Ok(MemoryDescriptor {
+            minimum,
+            maximum,
+            shared,
+            memory_type,
+        })
+    }
+
+    pub fn memory_type(&self) -> MemoryType {
+        self.memory_type
     }
 
     pub(crate) fn fits_in_imported(&self, imported: MemoryDescriptor) -> bool {
diff --git a/lib/spectests/examples/simple/main.rs b/lib/spectests/examples/simple/main.rs
index 357adb5f7..e9309c3c2 100644
--- a/lib/spectests/examples/simple/main.rs
+++ b/lib/spectests/examples/simple/main.rs
@@ -42,12 +42,8 @@ fn main() -> error::Result<()> {
 
     let inner_module = wasmer_runtime_core::compile_with(&wasm_binary, &get_compiler())?;
 
-    let memory = Memory::new(MemoryDescriptor {
-        minimum: Pages(1),
-        maximum: Some(Pages(1)),
-        shared: false,
-    })
-    .unwrap();
+    let memory_desc = MemoryDescriptor::new(Pages(1), Some(Pages(1)), false).unwrap();
+    let memory = Memory::new(memory_desc).unwrap();
 
     let global = Global::new(Value::I32(42));
 
diff --git a/lib/spectests/tests/spectest.rs b/lib/spectests/tests/spectest.rs
index 66a730d76..62bfc7d53 100644
--- a/lib/spectests/tests/spectest.rs
+++ b/lib/spectests/tests/spectest.rs
@@ -1021,12 +1021,8 @@ mod tests {
     fn get_spectest_import_object(
         registered_modules: &HashMap<String, Arc<Mutex<Instance>>>,
     ) -> ImportObject {
-        let memory = Memory::new(MemoryDescriptor {
-            minimum: Pages(1),
-            maximum: Some(Pages(2)),
-            shared: false,
-        })
-        .unwrap();
+        let memory_desc = MemoryDescriptor::new(Pages(1), Some(Pages(2)), false).unwrap();
+        let memory = Memory::new(memory_desc).unwrap();
 
         let global_i32 = Global::new(wasmer_runtime_core::types::Value::I32(666));
         let global_f32 = Global::new(wasmer_runtime_core::types::Value::F32(666.0));