Try #79:

.github/workflows/ci.yaml

@@ -0,0 +1,75 @@
+name: CI
+on:
+  push:
+    branches:
+      - staging
+      - trying
+
+jobs:
+
+  test:
+    name: Test
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        rust: [
+          1.31.0, # 2018!
+          1.32.0, # rand
+          stable,
+          beta,
+          nightly
+        ]
+    steps:
+      - name: Rust install
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: ${{ matrix.rust }}
+          profile: minimal
+          override: true
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Build
+        uses: actions-rs/cargo@v1
+        with:
+          command: build
+      - name: Test
+        run: ./ci/test_full.sh
+
+  # try a target that doesn't have std at all, but does have alloc
+  no_std:
+    name: No Std
+    runs-on: ubuntu-latest
+    steps:
+      - name: Rust install
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+          profile: minimal
+          override: true
+          target: thumbv6m-none-eabi
+      - name: Checkout
+        uses: actions/checkout@v1
+      - name: Build
+        uses: actions-rs/cargo@v1
+        with:
+          command: build
+          args: --target thumbv6m-none-eabi --no-default-features --features "libm rand serde"
+
+  fmt:
+    name: Format
+    runs-on: ubuntu-latest
+    steps:
+      - name: Rust install
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: 1.42.0
+          profile: minimal
+          override: true
+          components: rustfmt
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Check formatting
+        uses: actions-rs/cargo@v1
+        with:
+          command: fmt
+          args: --all -- --check

.github/workflows/master.yaml

@@ -0,0 +1,31 @@
+name: master
+on:
+  push:
+    branches:
+      - master
+  schedule:
+    - cron: '0 0 * * 0' # 00:00 Sunday
+
+jobs:
+
+  test:
+    name: Test
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        rust: [1.31.0, stable]
+    steps:
+      - name: Rust install
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: ${{ matrix.rust }}
+          profile: minimal
+          override: true
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Build
+        uses: actions-rs/cargo@v1
+        with:
+          command: build
+      - name: Test
+        run: ./ci/test_full.sh

.github/workflows/pr.yaml

@@ -0,0 +1,46 @@
+name: PR
+on:
+  pull_request:
+
+jobs:
+
+  test:
+    name: Test
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        rust: [1.31.0, stable]
+    steps:
+      - name: Rust install
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: ${{ matrix.rust }}
+          profile: minimal
+          override: true
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Build
+        uses: actions-rs/cargo@v1
+        with:
+          command: build
+      - name: Test
+        run: ./ci/test_full.sh
+
+  fmt:
+    name: Format
+    runs-on: ubuntu-latest
+    steps:
+      - name: Rust install
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: 1.42.0
+          profile: minimal
+          override: true
+          components: rustfmt
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Check formatting
+        uses: actions-rs/cargo@v1
+        with:
+          command: fmt
+          args: --all -- --check

Cargo.toml

@@ -10,7 +10,7 @@ name = "num-complex"
 repository = "https://github.com/rust-num/num-complex"
 version = "0.3.0-pre"
 readme = "README.md"
-exclude = ["/ci/*", "/.travis.yml", "/bors.toml"]
+exclude = ["/bors.toml", "/ci/*", "/.github/*"]
 publish = false
 edition = "2018"
 

README.md

@@ -2,8 +2,8 @@
 
 [![crate](https://img.shields.io/crates/v/num-complex.svg)](https://crates.io/crates/num-complex)
 [![documentation](https://docs.rs/num-complex/badge.svg)](https://docs.rs/num-complex)
-![minimum rustc 1.31](https://img.shields.io/badge/rustc-1.31+-red.svg)
-[![Travis status](https://travis-ci.org/rust-num/num-complex.svg?branch=master)](https://travis-ci.org/rust-num/num-complex)
+[![minimum rustc 1.31](https://img.shields.io/badge/rustc-1.31+-red.svg)](https://rust-lang.github.io/rfcs/2495-min-rust-version.html)
+[![build status](https://github.com/rust-num/num-complex/workflows/master/badge.svg)](https://github.com/rust-num/num-complex/actions)
 
 `Complex` numbers for Rust.
 

bors.toml

@@ -1,3 +1,9 @@
 status = [
-  "continuous-integration/travis-ci/push",
+  "Test (1.31.0)",
+  "Test (1.32.0)",
+  "Test (stable)",
+  "Test (beta)",
+  "Test (nightly)",
+  "No Std",
+  "Format",
 ]

ci/rustup.sh

@@ -1,12 +1,10 @@
 #!/bin/sh
-# Use rustup to locally run the same suite of tests as .travis.yml.
-# (You should first install/update all versions listed below.)
+# Use rustup to locally run the same suite of tests as .github/workflows/
+# (You should first install/update all of the versions below.)
 
 set -ex
 
-export TRAVIS_RUST_VERSION
-for TRAVIS_RUST_VERSION in 1.31.0 1.32.0 stable beta nightly; do
-    run="rustup run $TRAVIS_RUST_VERSION"
-    $run cargo build --verbose
-    $run $PWD/ci/test_full.sh
+ci=$(dirname $0)
+for version in 1.31.0 1.32.0 stable beta nightly; do
+    rustup run "$version" "$ci/test_full.sh"
 done

ci/test_full.sh

@@ -1,32 +1,58 @@
 #!/bin/bash
 
-set -ex
-
-echo Testing num-complex on rustc ${TRAVIS_RUST_VERSION}
-
-case "$TRAVIS_RUST_VERSION" in
-  1.31.*) FEATURES="libm serde" ;;
-  *) FEATURES="libm serde rand" ;;
-esac
-
-# num-complex should build and test everywhere.
-cargo build --verbose
-cargo test --verbose
-
-# It should build with minimal features too.
+set -e
+
+CRATE=num-complex
+MSRV=1.31
+
+get_rust_version() {
+  local array=($(rustc --version));
+  echo "${array[1]}";
+  return 0;
+}
+RUST_VERSION=$(get_rust_version)
+
+check_version() {
+  IFS=. read -ra rust <<< "$RUST_VERSION"
+  IFS=. read -ra want <<< "$1"
+  [[ "${rust[0]}" -gt "${want[0]}" ||
+   ( "${rust[0]}" -eq "${want[0]}" &&
+     "${rust[1]}" -ge "${want[1]}" )
+  ]]
+}
+
+echo "Testing $CRATE on rustc $RUST_VERSION"
+if ! check_version $MSRV ; then
+  echo "The minimum for $CRATE is rustc $MSRV"
+  exit 1
+fi
+
+FEATURES=(libm serde)
+check_version 1.32 && FEATURES+=(rand)
+echo "Testing supported features: ${FEATURES[*]}"
+
+set -x
+
+# test the default
+cargo build
+cargo test
+
+# test `no_std`
 cargo build --no-default-features
 cargo test --no-default-features
 
-# Each isolated feature should also work everywhere.
-for feature in $FEATURES; do
-  cargo build --verbose --no-default-features --features="$feature"
-  cargo test --verbose --no-default-features --features="$feature"
+# test each isolated feature, with and without std
+for feature in ${FEATURES[*]}; do
+  cargo build --no-default-features --features="std $feature"
+  cargo test --no-default-features --features="std $feature"
+
+  cargo build --no-default-features --features="$feature"
+  cargo test --no-default-features --features="$feature"
 done
 
-# test all supported features together
-cargo build --features="$FEATURES"
-cargo test --features="$FEATURES"
+# test all supported features, with and without std
+cargo build --features="std ${FEATURES[*]}"
+cargo test --features="std ${FEATURES[*]}"
 
-# test all supported features together with std
-cargo build --features="std $FEATURES"
-cargo test --features="std $FEATURES"
+cargo build --features="${FEATURES[*]}"
+cargo test --features="${FEATURES[*]}"