diff --git a/.github/workflows/cargo-clippy.yml b/.github/workflows/cargo-clippy.yml
new file mode 100644
index 0000000..acef88d
--- /dev/null
+++ b/.github/workflows/cargo-clippy.yml
@@ -0,0 +1,20 @@
+name: Cargo Clippy
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Make clippy happy
+      run: cargo clippy
diff --git a/.github/workflows/cargo-cross-build.yml b/.github/workflows/cargo-cross-build.yml
new file mode 100644
index 0000000..13bf85b
--- /dev/null
+++ b/.github/workflows/cargo-cross-build.yml
@@ -0,0 +1,58 @@
+name: Cargo Cross Build
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        rust: [stable]
+        target:
+        - aarch64-unknown-linux-gnu
+        - i686-pc-windows-gnu
+        - i686-pc-windows-msvc
+        - i686-unknown-linux-gnu
+        - aarch64-apple-darwin
+        - aarch64-pc-windows-msvc
+        - aarch64-unknown-linux-musl
+        - arm-unknown-linux-gnueabi
+        - arm-unknown-linux-gnueabihf
+        - armv7-unknown-linux-gnueabihf
+        - mips-unknown-linux-gnu
+        - mips64-unknown-linux-gnuabi64
+        - mips64el-unknown-linux-gnuabi64
+        - mipsel-unknown-linux-gnu
+        - powerpc-unknown-linux-gnu
+        - powerpc64-unknown-linux-gnu
+        - powerpc64le-unknown-linux-gnu
+        - riscv64gc-unknown-linux-gnu
+        - s390x-unknown-linux-gnu
+        - x86_64-unknown-freebsd
+        - x86_64-unknown-illumos
+        - x86_64-unknown-netbsd
+        - i686-linux-android
+        - x86_64-linux-android
+        - arm-linux-androideabi
+        - aarch64-linux-android
+        - x86_64-apple-ios
+        - asmjs-unknown-emscripten
+        - aarch64-apple-ios
+        - aarch64-apple-ios-sim
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Run build
+      run: |
+        rustup default ${{ matrix.rust }}
+        rustup target add ${{ matrix.target }}
+        cargo build --verbose --target ${{ matrix.target }}
diff --git a/.github/workflows/cargo-test-linux.yml b/.github/workflows/cargo-test-linux.yml
new file mode 100644
index 0000000..6db3aa3
--- /dev/null
+++ b/.github/workflows/cargo-test-linux.yml
@@ -0,0 +1,28 @@
+name: Cargo Test Linux
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        rust: [stable, beta, nightly]
+        target: [x86_64-unknown-linux-gnu, x86_64-unknown-linux-musl]
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Run tests
+      run: |
+        rustup default ${{ matrix.rust }}
+        rustup target add ${{ matrix.target }}
+        cargo test --verbose --target ${{ matrix.target }}
diff --git a/.github/workflows/cargo-test-macos.yml b/.github/workflows/cargo-test-macos.yml
new file mode 100644
index 0000000..c3cf500
--- /dev/null
+++ b/.github/workflows/cargo-test-macos.yml
@@ -0,0 +1,28 @@
+name: Cargo Test macOS
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  build:
+
+    runs-on: macos-latest
+
+    strategy:
+      matrix:
+        rust: [stable, beta, nightly]
+        target: [x86_64-apple-darwin, x86_64-apple-ios, aarch64-apple-darwin]
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Run tests
+      run: |
+        rustup default ${{ martix.rust }}
+        rustup target add ${{ matrix.target }}
+        cargo test --verbose --target ${{ matrix.target }}
diff --git a/.github/workflows/cargo-test-minimum-rust.yml b/.github/workflows/cargo-test-minimum-rust.yml
new file mode 100644
index 0000000..785672c
--- /dev/null
+++ b/.github/workflows/cargo-test-minimum-rust.yml
@@ -0,0 +1,28 @@
+name: Cargo Test Minimum Rust Version
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        rust: [1.13]
+        target: [x86_64-unknown-linux-gnu]
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Run tests
+      run: |
+        rustup default ${{ matrix.rust }}
+        rustup target add ${{ matrix.target }}
+        cargo test --verbose --target ${{ matrix.target }}
diff --git a/.github/workflows/cargo-test-windows.yml b/.github/workflows/cargo-test-windows.yml
new file mode 100644
index 0000000..3c563ca
--- /dev/null
+++ b/.github/workflows/cargo-test-windows.yml
@@ -0,0 +1,28 @@
+name: Cargo Test Windows
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  build:
+
+    runs-on: windows-latest
+
+    strategy:
+      matrix:
+        rust: [stable, beta, nightly]
+        target: [x86_64-pc-windows-gnu, x86_64-pc-windows-msvc]
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Run tests
+      run: |
+        rustup default ${{ matrix.rust }}
+        rustup target add ${{ matrix.target }}
+        cargo test --verbose --target ${{ matrix.target }}
diff --git a/.github/workflows/test-docker-cgroup.yml b/.github/workflows/test-docker-cgroup.yml
new file mode 100644
index 0000000..bc27b80
--- /dev/null
+++ b/.github/workflows/test-docker-cgroup.yml
@@ -0,0 +1,27 @@
+name: Test Docker Cgroup
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Test Cgroup
+      run: |
+        docker build -f ci/cgroups/Dockerfile -t num-cpus-cgroups .
+        # Test without cgroups
+        docker run -e NUM_CPUS_TEST_GET=2 num-cpus-cgroups
+        # Only 1 CPU
+        docker run --cpus="1" -e NUM_CPUS_TEST_GET=1 num-cpus-cgroups
+        # 1.5 CPUs
+        docker run --cpus="1.5" -e NUM_CPUS_TEST_GET=2 num-cpus-cgroups
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index cec6ddb..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,81 +0,0 @@
-language: rust
-rust: stable
-dist: xenial
-sudo: false
-notifications:
-  email: disabled
-
-cache: cargo
-
-install:
-  - if [ -z "$NO_ADD" ]; then rustup target add "$TARGET"; fi
-
-script:
-  - cargo build --verbose --target "$TARGET"
-  # Only run the targets if we are on the same OS.
-  - if [ "$RUN" == "1" ]; then cargo test --verbose --target "$TARGET"; fi
-
-env:
-  global:
-    # Travis CI servers make 2 cores available to processes via virtualization.
-    # See https://docs.travis-ci.com/user/reference/overview/
-    - NUM_CPUS_TEST_GET=2
-
-matrix:
-  include:
-    # Linux
-    # Minimum Supported Rust Version
-    - name: Minimum Supported Rust Version
-      env: TARGET=x86_64-unknown-linux-gnu RUN=1 NO_ADD=1
-      rust: 1.13.0
-    # 32-bit requires multilib.
-    - env: TARGET=i686-unknown-linux-gnu RUN=1
-      addons:
-        apt:
-          packages:
-            - gcc-multilib
-    # 64-bit stable.
-    - env: TARGET=x86_64-unknown-linux-gnu RUN=1 NO_ADD=1
-      rust: stable
-    # 64-bit beta.
-    - env: TARGET=x86_64-unknown-linux-gnu RUN=1 NO_ADD=1
-      rust: beta
-    # 64-bit nightly.
-    - env: TARGET=x86_64-unknown-linux-gnu RUN=1 NO_ADD=1
-      rust: nightly
-
-    # Mac OS X
-    - os: osx
-      env: TARGET=x86_64-apple-darwin RUN=1 NO_ADD=1
-    # Android
-    # - for x86
-    - env: TARGET=i686-linux-android
-    - env: TARGET=x86_64-linux-android
-    # - for ARM
-    - env: TARGET=arm-linux-androideabi
-    - env: TARGET=aarch64-linux-android
-    # IOS
-    - os: osx
-      osx_image: xcode9
-      env: TARGET=x86_64-apple-ios
-    # FreeBSD
-    - env: TARGET=x86_64-unknown-freebsd
-    # Fuchsia
-    # FIXME: figure out why target is missing and re-enable
-    #- env: TARGET=x86_64-unknown-fuchsia
-    # NetBSD
-    - env: TARGET=x86_64-unknown-netbsd
-    # Emscripten
-    - env: TARGET=asmjs-unknown-emscripten
-
-    # CGroups in Docker
-    - name: Docker CGroups
-      install:
-      script:
-      - docker build -f ci/cgroups/Dockerfile -t num-cpus-cgroups .
-      # Test without cgroups
-      - docker run -it -e NUM_CPUS_TEST_GET=2 num-cpus-cgroups
-      # Only 1 CPU
-      - docker run -it --cpus="1" -e NUM_CPUS_TEST_GET=1 num-cpus-cgroups
-      # 1.5 CPUs
-      - docker run -it --cpus="1.5" -e NUM_CPUS_TEST_GET=2 num-cpus-cgroups
diff --git a/ci/cgroups/Dockerfile b/ci/cgroups/Dockerfile
index d5f288a..7636a47 100644
--- a/ci/cgroups/Dockerfile
+++ b/ci/cgroups/Dockerfile
@@ -1,4 +1,4 @@
-FROM rust:1.40
+FROM rust:latest
 
 WORKDIR /usr/num_cpus