Fix compilation errors since last build

.github/workflows/build.yml

@@ -23,6 +23,7 @@ jobs:
     name: Ubuntu
     runs-on: ubuntu-latest
     strategy:
+      fail-fast: false
       matrix:
         rust:
           - stable
@@ -66,6 +67,7 @@ jobs:
     name: Minimum supported Rust version
     runs-on: ubuntu-latest
     strategy:
+      fail-fast: false
       matrix:
         features:
           - no default features
@@ -75,8 +77,12 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v3
 
-      - name: Install Rust 1.56  # MSRV from Cargo.toml
-        run: rustup default 1.56
+      - name: Find Minimum Support Rust Version
+        run: |
+          echo "msrv=$(egrep 'rust-version\s*=\s*"([0-9.]+)"' Cargo.toml | cut -d '"' -f 2)" >> "$GITHUB_ENV"
+
+      - name: Install Rust ${{ env.msrv }} (MSRV)
+        run: rustup default $msrv
 
       - uses: Swatinem/rust-cache@v2
 
@@ -124,6 +130,7 @@ jobs:
     name: Fuzz test
     runs-on: ubuntu-latest
     strategy:
+      fail-fast: false
       matrix:
         fuzz-target:
           - fill_first_fit

.github/workflows/coverage.yml

@@ -13,6 +13,7 @@ jobs:
     name: Generate coverage
     runs-on: ubuntu-latest
     strategy:
+      fail-fast: false
       matrix:
         features:
           - no-default-features

Cargo.toml

@@ -10,7 +10,7 @@ keywords = ["text", "formatting", "wrap", "typesetting", "hyphenation"]
 categories = ["text-processing", "command-line-interface"]
 license = "MIT"
 edition = "2021"
-rust-version = "1.56"
+rust-version = "1.62"
 exclude = [".github/", ".gitignore", "benchmarks/", "examples/", "fuzz/", "images/"]
 
 [[example]]
@@ -29,6 +29,9 @@ all-features = true
 [features]
 default = ["unicode-linebreak", "unicode-width", "smawk"]
 
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(fuzzing)'] }
+
 [dependencies]
 hyphenation = { version = "0.8.4", optional = true, features = ["embed_en-us"] }
 smawk = { version = "0.3.1", optional = true }