diff --git a/Cargo.lock b/Cargo.lock
index a2b97ad28..71a71b8ab 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2753,6 +2753,7 @@ dependencies = [
  "generate-emscripten-tests",
  "generate-wasi-tests",
  "glob 0.3.0",
+ "libc",
  "log",
  "rustc_version",
  "serde",
@@ -2761,7 +2762,6 @@ dependencies = [
  "wabt",
  "wasmer",
  "wasmer-clif-backend",
- "wasmer-dev-utils",
  "wasmer-emscripten",
  "wasmer-kernel-loader",
  "wasmer-llvm-backend",
@@ -2824,13 +2824,6 @@ dependencies = [
  "wasmparser",
 ]
 
-[[package]]
-name = "wasmer-dev-utils"
-version = "0.16.2"
-dependencies = [
- "libc",
-]
-
 [[package]]
 name = "wasmer-emscripten"
 version = "0.16.2"
diff --git a/Cargo.toml b/Cargo.toml
index 501485164..310138723 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -37,7 +37,6 @@ wasmer-emscripten = { path = "lib/emscripten" }
 wasmer-llvm-backend = { path = "lib/llvm-backend", optional = true }
 wasmer-wasi = { path = "lib/wasi", optional = true }
 wasmer-kernel-loader = { path = "lib/kernel-loader", optional = true }
-wasmer-dev-utils = { path = "lib/dev-utils", optional = true }
 wasmer-wasi-experimental-io-devices = { path = "lib/wasi-experimental-io-devices", optional = true }
 
 [workspace]
@@ -55,7 +54,6 @@ members = [
     "lib/middleware-common",
     "lib/kernel-loader",
     "lib/kernel-net",
-    "lib/dev-utils",
     "lib/wasi-experimental-io-devices",
     "lib/interface-types",
     "examples/parallel",
@@ -75,10 +73,10 @@ rustc_version = "0.2"
 [dev-dependencies]
 criterion = "0.3"
 glob = "0.3"
+libc = "0.2.60" # for `tests/dev-utils`'s Stdout capturing
 serde = { version = "1", features = ["derive"] } # used by the plugin example
 typetag = "0.1" # used by the plugin example
 wabt = "0.9.1"
-wasmer-dev-utils = { path = "lib/dev-utils" }
 
 [features]
 default = ["fast-tests", "wasi", "backend-cranelift", "wabt"]
diff --git a/lib/dev-utils/Cargo.toml b/lib/dev-utils/Cargo.toml
deleted file mode 100644
index 07800ed61..000000000
--- a/lib/dev-utils/Cargo.toml
+++ /dev/null
@@ -1,12 +0,0 @@
-[package]
-name = "wasmer-dev-utils"
-version = "0.16.2"
-description = "Wasmer runtime core library"
-license = "MIT"
-authors = ["The Wasmer Engineering Team <engineering@wasmer.io>"]
-edition = "2018"
-repository = "https://github.com/wasmerio/wasmer"
-publish = false
-
-[dependencies]
-libc = "0.2.60"
diff --git a/lib/dev-utils/README.md b/lib/dev-utils/README.md
deleted file mode 100644
index d198eaa70..000000000
--- a/lib/dev-utils/README.md
+++ /dev/null
@@ -1,3 +0,0 @@
-# Dev Utils
-
-This is shared code between the modules for testing and development only.  Code in this crate will not be shipped.
diff --git a/lib/dev-utils/src/lib.rs b/lib/dev-utils/src/lib.rs
deleted file mode 100644
index 2a470bba4..000000000
--- a/lib/dev-utils/src/lib.rs
+++ /dev/null
@@ -1,5 +0,0 @@
-#![doc(html_favicon_url = "https://wasmer.io/static/icons/favicon.ico")]
-#![doc(html_logo_url = "https://avatars3.githubusercontent.com/u/44205449?s=200&v=4")]
-
-pub mod file_descriptor;
-pub mod stdio;
diff --git a/lib/dev-utils/src/file_descriptor.rs b/tests/dev_utils/file_descriptor.rs
similarity index 100%
rename from lib/dev-utils/src/file_descriptor.rs
rename to tests/dev_utils/file_descriptor.rs
diff --git a/tests/dev_utils/mod.rs b/tests/dev_utils/mod.rs
new file mode 100644
index 000000000..76ae6804f
--- /dev/null
+++ b/tests/dev_utils/mod.rs
@@ -0,0 +1,2 @@
+pub mod file_descriptor;
+pub mod stdio;
diff --git a/lib/dev-utils/src/stdio.rs b/tests/dev_utils/stdio.rs
similarity index 100%
rename from lib/dev-utils/src/stdio.rs
rename to tests/dev_utils/stdio.rs
diff --git a/tests/emtest.rs b/tests/emtest.rs
index d8a255bce..ae941d3c8 100644
--- a/tests/emtest.rs
+++ b/tests/emtest.rs
@@ -1 +1,2 @@
+pub mod dev_utils;
 mod emtests;
diff --git a/tests/emtests/_common.rs b/tests/emtests/_common.rs
index 236e264c6..8808e704a 100644
--- a/tests/emtests/_common.rs
+++ b/tests/emtests/_common.rs
@@ -37,7 +37,7 @@ macro_rules! assert_emscripten_output {
             EmscriptenGlobals,
             generate_emscripten_env,
         };
-        use wasmer_dev_utils::stdio::StdioCapturer;
+        use crate::dev_utils::stdio::StdioCapturer;
 
         let wasm_bytes = include_bytes!($file);
         let backend = $crate::emtests::_common::get_backend().expect("Please set one of `WASMER_TEST_CRANELIFT`, `WASMER_TEST_LLVM`, or `WASMER_TEST_SINGELPASS` to `1`.");
diff --git a/tests/wasitest.rs b/tests/wasitest.rs
index a89a8f1a3..dd8af3824 100644
--- a/tests/wasitest.rs
+++ b/tests/wasitest.rs
@@ -1 +1,2 @@
+pub mod dev_utils;
 mod wasitests;
diff --git a/tests/wasitests/_common.rs b/tests/wasitests/_common.rs
index a747f18ee..6cc303332 100644
--- a/tests/wasitests/_common.rs
+++ b/tests/wasitests/_common.rs
@@ -32,7 +32,7 @@ pub fn get_backend() -> Option<Backend> {
 
 macro_rules! assert_wasi_output {
     ($file:expr, $name:expr, $po_dir_args: expr, $mapdir_args:expr, $envvar_args:expr, $expected:expr) => {{
-        use wasmer_dev_utils::stdio::StdioCapturer;
+        use crate::dev_utils::stdio::StdioCapturer;
         use wasmer_runtime::Func;
         use wasmer_wasi::{generate_import_object_for_version, get_wasi_version};