__INIT__

.github/workflows/rust.yml

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+name: Build and test rust code
+
+on: [push]
+
+permissions:
+  contents: read
+
+jobs:
+  build_and_test:
+    runs-on: ubuntu-latest
+    name: Build and test binary
+    steps:
+      - name: Cache cargo registry
+        uses: actions/cache@v3
+        with:
+          path: ~/.cargo/registry
+          key: ${{ runner.os }}-cargo-registry-${{ hashFiles('**/Cargo.lock') }}
+      - name: Cache cargo index
+        uses: actions/cache@v3
+        with:
+          path: ~/.cargo/git
+          key: ${{ runner.os }}-cargo-index-${{ hashFiles('**/Cargo.lock') }}
+      - name: Cache cargo build
+        uses: actions/cache@v3
+        with:
+          path: target
+          key: ${{ runner.os }}-cargo-build-target-${{ hashFiles('**/Cargo.lock') }}
+      - name: Checkout repository
+        uses: actions/checkout@v3
+      - name: Set up toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: 1.67
+          override: true
+      - name: Build
+        uses: actions-rs/cargo@v1
+        with:
+          command: build
+          args: --release
+      - name: Test
+        uses: actions-rs/cargo@v1
+        with:
+          command: test
+          args: --release

.gitignore

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+# Generated by Cargo
+# will have compiled files and executables
+debug/
+target/
+
+# Remove Cargo.lock from gitignore if creating an executable, leave it for libraries
+# More information here https://doc.rust-lang.org/cargo/guide/cargo-toml-vs-cargo-lock.html
+Cargo.lock
+
+# These are backup files generated by rustfmt
+**/*.rs.bk
+
+# MSVC Windows builds of rustc generate these, which store debugging information
+*.pdb

Cargo.toml

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+[package]
+name = "dns-ptr-resolver"
+version = "1.0.0"
+authors = ["William Desportes <williamdes@wdes.fr>"]
+edition = "2021"
+rust-version = "1.67.0"  # MSRV
+description = "A program to resolve DNS IPs to PTRs"
+homepage = "https://github.com/wdes/dns-ptr-resolver#readme"
+repository = "https://github.com/wdes/dns-ptr-resolver"
+readme = "README.md"
+keywords = ["dns", "ptr", "resolver"]
+categories = ["command-line-utilities"]
+license = "MPL-2.0"
+include = [
+    "/src/**/*.rs",
+    "/Cargo.toml",
+    "/LICENSE",
+]
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+rayon = "1.7.0"
+trust-dns-client = { version = "*", default-features = false }
+rustdns = "0.4.0"