diff --git a/.github/workflows/codecov.yml b/.github/workflows/codecov.yml
index 88634264cf..a819b21a5b 100644
--- a/.github/workflows/codecov.yml
+++ b/.github/workflows/codecov.yml
@@ -1,4 +1,9 @@
 name: codecov
+
+env:
+  # It's really `--all-features`, but not adding the mutually exclusive features from rkyv
+  ALL_NON_EXCLUSIVE_FEATURES: --features "default unstable-locales rkyv-64 rkyv-validation rustc-serialize serde arbitrary"
+
 on:
   push:
     branches: [main, 0.4.x]
@@ -18,7 +23,7 @@ jobs:
       - name: Install cargo-llvm-cov
         uses: taiki-e/install-action@cargo-llvm-cov
       - name: Generate code coverage
-        run: cargo +nightly llvm-cov --all-features --workspace --lcov --doctests --output-path lcov.info
+        run: cargo +nightly llvm-cov ${{ env.ALL_NON_EXCLUSIVE_FEATURES }} --workspace --lcov --doctests --output-path lcov.info
       - name: Upload coverage to Codecov
         uses: codecov/codecov-action@v3
         env:
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 87c9f553c4..b954a7ec2c 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -1,5 +1,9 @@
 name: lint
 
+env:
+  # It's really `--all-features`, but not adding the mutually exclusive features from rkyv
+  ALL_NON_EXCLUSIVE_FEATURES: --features "default unstable-locales rkyv-64 rkyv-validation rustc-serialize serde arbitrary"
+
 on:
   push:
     branches: [main, 0.4.x]
@@ -19,7 +23,7 @@ jobs:
       - run: cargo fmt --check --manifest-path fuzz/Cargo.toml
       - run: cargo fmt --check --manifest-path bench/Cargo.toml
       - run: |
-          cargo clippy --all-features --all-targets --color=always \
+          cargo clippy ${{ env.ALL_NON_EXCLUSIVE_FEATURES }} --all-targets --color=always \
             -- -D warnings
       - run: |
           cargo clippy --manifest-path fuzz/Cargo.toml --color=always \
@@ -50,8 +54,8 @@ jobs:
       - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@stable
       - run: cargo install cargo-deadlinks
-      - run: cargo deadlinks -- --all-features
-      - run: cargo doc --all-features --no-deps
+      - run: cargo deadlinks -- ${{ env.ALL_NON_EXCLUSIVE_FEATURES }}
+      - run: cargo doc ${{ env.ALL_NON_EXCLUSIVE_FEATURES }} --no-deps
         env:
           RUSTDOCFLAGS: -Dwarnings
 
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 19232e0e8f..a4d17488a7 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -1,5 +1,9 @@
 name: All Tests and Builds
 
+env:
+  # It's really `--all-features`, but not adding the mutually exclusive features from rkyv
+  ALL_NON_EXCLUSIVE_FEATURES: --features "default unstable-locales rkyv-64 rkyv-validation rustc-serialize serde arbitrary"
+
 on:
   push:
     branches: [main, 0.4.x]
@@ -16,7 +20,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@stable
       - uses: Swatinem/rust-cache@v2
-      - run: cargo test --all-features --color=always -- --color=always
+      - run: cargo test ${{ env.ALL_NON_EXCLUSIVE_FEATURES }} --color=always -- --color=always
 
   # later this may be able to be included with the below
   # kept separate for now as the following don't compile on 1.60
@@ -61,8 +65,8 @@ jobs:
       - run: cargo check --manifest-path fuzz/Cargo.toml --all-targets
       # run --lib and --doc to avoid the long running integration tests
       # which are run elsewhere
-      - run: cargo test --lib --all-features --color=always -- --color=always
-      - run: cargo test --doc --all-features --color=always -- --color=always
+      - run: cargo test --lib ${{ env.ALL_NON_EXCLUSIVE_FEATURES }} --color=always -- --color=always
+      - run: cargo test --doc ${{ env.ALL_NON_EXCLUSIVE_FEATURES }} --color=always -- --color=always
 
   features_check:
     strategy:
@@ -76,7 +80,7 @@ jobs:
       - uses: Swatinem/rust-cache@v2
       - run: |
           cargo hack check --feature-powerset --optional-deps serde \
-            --skip __internal_bench,iana-time-zone,pure-rust-locales,libc,winapi \
+            --skip __internal_bench,iana-time-zone,pure-rust-locales,libc,winapi,rkyv-16,rkyv-64 \
             --all-targets
         # run using `bash` on all platforms for consistent
         # line-continuation marks
@@ -182,16 +186,16 @@ jobs:
       - uses: actions/checkout@v4
       - run: cargo install cross
       - uses: Swatinem/rust-cache@v2
-      - run: cross test --lib --all-features --target i686-unknown-linux-gnu --color=always
-      - run: cross test --doc --all-features --target i686-unknown-linux-gnu --color=always
-      - run: cross test --lib --all-features --target i686-unknown-linux-musl --color=always
-      - run: cross test --doc --all-features --target i686-unknown-linux-musl --color=always
+      - run: cross test --lib ${{ env.ALL_NON_EXCLUSIVE_FEATURES }} --target i686-unknown-linux-gnu --color=always
+      - run: cross test --doc ${{ env.ALL_NON_EXCLUSIVE_FEATURES }} --target i686-unknown-linux-gnu --color=always
+      - run: cross test --lib ${{ env.ALL_NON_EXCLUSIVE_FEATURES }} --target i686-unknown-linux-musl --color=always
+      - run: cross test --doc ${{ env.ALL_NON_EXCLUSIVE_FEATURES }} --target i686-unknown-linux-musl --color=always
 
   check-docs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@nightly
-      - run: cargo +nightly doc --all-features --no-deps
+      - run: cargo +nightly doc ${{ env.ALL_NON_EXCLUSIVE_FEATURES }} --no-deps
         env:
           RUSTDOCFLAGS: "-D warnings --cfg docsrs"