diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
new file mode 100644
index 0000000000..4d66e0c055
--- /dev/null
+++ b/.github/workflows/main.yml
@@ -0,0 +1,61 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+
+jobs:
+  rustfmt:
+    name: Rustfmt
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v1
+      with:
+        submodules: true
+    - name: Install Rust
+      run: |
+        rustup update stable
+        rustup default stable
+        rustup component add rustfmt
+    - name: Cargo fmt
+      run: cargo fmt --all -- --check
+
+  build:
+    name: Build
+    runs-on: ${{ matrix.os }}-latest
+    strategy:
+      matrix:
+        os: [ubuntu, macOS, windows]
+
+    steps:
+    - uses: actions/checkout@v1
+      with:
+        submodules: true
+    - name: Install Rust
+      shell: bash
+      run: |
+        rustup update stable
+        rustup default stable
+    - name: Build
+      run: cargo build --all --release -vv
+
+  test:
+    name: Test
+    runs-on: ${{ matrix.os }}-latest
+    strategy:
+      matrix:
+        os: [ubuntu, macOS, windows]
+
+    steps:
+    - uses: actions/checkout@v1
+      with:
+        submodules: true
+    - name: Install Rust
+      shell: bash
+      run: |
+        rustup update stable
+        rustup default stable
+    - name: Test
+      run: cargo test --all
diff --git a/Cargo.toml b/Cargo.toml
index 4089caf073..80d1545ab0 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -9,4 +9,8 @@ generate = { path = "crates/generate" }
 memory = { path = "crates/memory" }
 
 [workspace]
-members = ["crates/generate"]
+members = [
+  "crates/generate",
+  "crates/memory"
+]
+exclude = ["crates/WASI"]
diff --git a/crates/memory/src/lib.rs b/crates/memory/src/lib.rs
index 6f2b17ecfc..fa1824f3b6 100644
--- a/crates/memory/src/lib.rs
+++ b/crates/memory/src/lib.rs
@@ -4,7 +4,7 @@ mod guest_type;
 mod memory;
 mod region;
 
+pub use self::memory::{GuestMemory, GuestPtr, GuestPtrMut, GuestRef, GuestRefMut};
 pub use error::GuestError;
 pub use guest_type::{GuestErrorType, GuestType, GuestTypeClone, GuestTypeCopy, GuestTypePtr};
-pub use memory::{GuestMemory, GuestPtr, GuestPtrMut, GuestRef, GuestRefMut};
 pub use region::Region;