drop Travis, add Github Actions

Also fix the benchmarks which were not building.

Author: apoelstra

.github/workflows/rust.yml

@@ -0,0 +1,82 @@
+on: [push, pull_request]
+
+name: Continuous integration
+
+jobs:
+  bench_nightly:
+    name: Nightly - ASan + Bench
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        rust:
+          - nightly
+    steps:
+      - name: Checkout Crate 
+        uses: actions/checkout@v2
+      - name: Checkout Toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: ${{ matrix.rust }}
+          override: true
+          components: rust-src
+      - name: Running address sanitizer
+        env:
+          DO_ASAN: true
+        run: ./contrib/test.sh
+      - name: Running benchmarks
+        env:
+          DO_BENCH: true
+        run: ./contrib/test.sh
+
+  wasm: 
+    name: Stable - Docs / WebAssembly Build
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        rust:
+          - stable
+    steps:
+      - name: Checkout Crate
+        uses: actions/checkout@v2
+      - name: Checkout Toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: ${{ matrix.rust }}
+          override: true
+      - name: Building docs
+        env:
+          DO_DOCS: true
+        run: ./contrib/test.sh
+      - name: Running WASM build
+        env:
+          DO_WASM: true
+        run: ./contrib/test.sh
+
+  Tests:
+    name: Tests
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        rust:
+          - 1.29.0
+          - beta
+          - stable
+    steps:
+      - name: Checkout Crate
+        uses: actions/checkout@v2
+      - name: Checkout Toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: ${{ matrix.rust }}
+          override: true
+      - name: Pin cc if rust 1.29
+        if: matrix.rust == '1.29.0'
+        run: cargo generate-lockfile && cargo update -p serde_json --precise "1.0.39"
+      - name: Running cargo
+        env:
+          DO_FEATURE_MATRIX: true
+        run: ./contrib/test.sh
+

.travis.yml

@@ -12,6 +12,13 @@ since these are needed to display hashes anway.
 ## Minimum Supported Rust Version (MSRV)
 
 This library should always compile with any combination of features on **Rust 1.29**.
+However, due to some dependencies breaking their MSRV in patch releases, you may
+need to pin these deps explicitly, e.g. with the following commands
+
+```
+cargo generate-lockfile
+cargo update -p serde_json --precise "1.0.39"
+```
 
 ## Contributions
 

README.md

@@ -0,0 +1,70 @@
+#!/bin/sh -ex
+
+FEATURES="serde serde-std"
+
+# Use toolchain if explicitly specified
+if [ -n "$TOOLCHAIN" ]
+then
+    alias cargo="cargo +$TOOLCHAIN"
+fi
+
+cargo --version
+rustc --version
+
+# Make all cargo invocations verbose
+export CARGO_TERM_VERBOSE=true
+
+# Defaults / sanity checks
+cargo build --all
+cargo test --all
+
+if [ "$DO_FEATURE_MATRIX" = true ]; then
+    cargo build --all --no-default-features
+    cargo test --all --no-default-features
+
+    # All features
+    cargo build --all --no-default-features --features="$FEATURES"
+    cargo test --all --features="$FEATURES"
+    # Single features
+    for feature in ${FEATURES}
+    do
+        cargo build --all --no-default-features --features="$feature"
+        cargo test --all --features="$feature"
+    done
+
+    # Other combos
+    cargo test --all --features="serde-std"
+fi
+
+# Docs
+if [ "$DO_DOCS" = true ]; then
+    cargo doc --all --features="$FEATURES"
+fi
+
+# Webassembly stuff
+if [ "$DO_WASM" = true ]; then
+    clang --version &&
+    CARGO_TARGET_DIR=wasm cargo install --force wasm-pack &&
+    printf '\n[lib]\ncrate-type = ["cdylib", "rlib"]\n' >> Cargo.toml &&
+    CC=clang-9 wasm-pack build &&
+    CC=clang-9 wasm-pack test --node;
+fi
+
+# Address Sanitizer
+if [ "$DO_ASAN" = true ]; then
+    cargo clean
+    CC='clang -fsanitize=address -fno-omit-frame-pointer'                                        \
+    RUSTFLAGS='-Zsanitizer=address -Clinker=clang -Cforce-frame-pointers=yes'                    \
+    ASAN_OPTIONS='detect_leaks=1 detect_invalid_pointer_pairs=1 detect_stack_use_after_return=1' \
+    cargo test --lib --all --features="$FEATURES" -Zbuild-std --target x86_64-unknown-linux-gnu
+    cargo clean
+    CC='clang -fsanitize=memory -fno-omit-frame-pointer'                                         \
+    RUSTFLAGS='-Zsanitizer=memory -Zsanitizer-memory-track-origins -Cforce-frame-pointers=yes'   \
+    cargo test --lib --all --features="$FEATURES" -Zbuild-std --target x86_64-unknown-linux-gnu
+fi
+
+# Bench
+if [ "$DO_BENCH" = true ]; then
+    cargo bench --all --features="unstable"
+fi
+

contrib/test.sh

@@ -136,7 +136,7 @@ pub trait Hash: Copy + Clone + PartialEq + Eq + Default + PartialOrd + Ord +
 }
 
 #[cfg(test)]
-mod test {
+mod tests {
     use Hash;
     hash_newtype!(TestNewtype, ::sha256d::Hash, 32, doc="A test newtype");
     hash_newtype!(TestNewtype2, ::sha256d::Hash, 32, doc="A test newtype");