diff --git a/.clippy.toml b/.clippy.toml
index 68e430e..027eef4 100644
--- a/.clippy.toml
+++ b/.clippy.toml
@@ -1,5 +1,5 @@
-msrv = "1.74"  # MSRV
 warn-on-all-wildcard-imports = true
+allow-print-in-tests = true
 allow-expect-in-tests = true
 allow-unwrap-in-tests = true
 allow-dbg-in-tests = true
diff --git a/.github/renovate.json5 b/.github/renovate.json5
index 1725e3e..c184420 100644
--- a/.github/renovate.json5
+++ b/.github/renovate.json5
@@ -3,6 +3,7 @@
     'before 5am on the first day of the month',
   ],
   semanticCommits: 'enabled',
+  commitMessageLowerCase: 'never',
   configMigration: true,
   dependencyDashboard: true,
   customManagers: [
@@ -17,29 +18,28 @@
         '^\\.github/workflows/rust-next.yml$',
       ],
       matchStrings: [
-        'MSRV.*?(?<currentValue>\\d+\\.\\d+(\\.\\d+)?)',
-        '(?<currentValue>\\d+\\.\\d+(\\.\\d+)?).*?MSRV',
+        'STABLE.*?(?<currentValue>\\d+\\.\\d+(\\.\\d+)?)',
+        '(?<currentValue>\\d+\\.\\d+(\\.\\d+)?).*?STABLE',
       ],
-      depNameTemplate: 'rust',
+      depNameTemplate: 'STABLE',
       packageNameTemplate: 'rust-lang/rust',
       datasourceTemplate: 'github-releases',
     },
   ],
   packageRules: [
     {
-      commitMessageTopic: 'MSRV',
+      commitMessageTopic: 'Rust Stable',
       matchManagers: [
         'custom.regex',
       ],
       matchPackageNames: [
-        'rust',
+        'STABLE',
       ],
-      minimumReleaseAge: '126 days',  // 3 releases * 6 weeks per release * 7 days per week
-      internalChecksFilter: 'strict',
       extractVersion: '^(?<version>\\d+\\.\\d+)',  // Drop the patch version
       schedule: [
         '* * * * *',
       ],
+      automerge: true,
     },
     // Goals:
     // - Keep version reqs low, ignoring compatible normal/build dependencies
@@ -72,6 +72,7 @@
       matchCurrentVersion: '>=1.0.0',
       matchUpdateTypes: [
         'minor',
+        'patch',
       ],
       enabled: false,
     },
@@ -99,6 +100,7 @@
       matchCurrentVersion: '>=1.0.0',
       matchUpdateTypes: [
         'minor',
+        'patch',
       ],
       automerge: true,
       groupName: 'compatible (dev)',
diff --git a/.github/settings.yml b/.github/settings.yml
index 1591e85..6f80f01 100644
--- a/.github/settings.yml
+++ b/.github/settings.yml
@@ -42,14 +42,18 @@ labels:
     color: '#c2e0c6'
     description: "Help wanted!"
 
-branches:
-  - name: master
-    protection:
-      required_pull_request_reviews: null
-      required_conversation_resolution: true
-      required_status_checks:
-        # Required. Require branches to be up to date before merging.
-        strict: false
-        contexts: ["CI", "Lint Commits", "Spell Check with Typos"]
-      enforce_admins: false
-      restrictions: null
+# This serves more as documentation.
+# Branch protection API was replaced by rulesets but settings isn't updated.
+# See https://github.com/repository-settings/app/issues/825
+#
+# branches:
+#   - name: master
+#     protection:
+#       required_pull_request_reviews: null
+#       required_conversation_resolution: true
+#       required_status_checks:
+#         # Required. Require branches to be up to date before merging.
+#         strict: false
+#         contexts: ["CI", "Spell Check with Typos"]
+#       enforce_admins: false
+#       restrictions: null
diff --git a/.github/workflows/audit.yml b/.github/workflows/audit.yml
index 442e637..35b3da8 100644
--- a/.github/workflows/audit.yml
+++ b/.github/workflows/audit.yml
@@ -17,6 +17,10 @@ env:
   CARGO_TERM_COLOR: always
   CLICOLOR: 1
 
+concurrency:
+  group: "${{ github.workflow }}-${{ github.ref }}"
+  cancel-in-progress: true
+
 jobs:
   security_audit:
     permissions:
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 351716f..504d777 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,21 +14,27 @@ env:
   CARGO_TERM_COLOR: always
   CLICOLOR: 1
 
+concurrency:
+  group: "${{ github.workflow }}-${{ github.ref }}"
+  cancel-in-progress: true
+
 jobs:
   ci:
     permissions:
       contents: none
     name: CI
-    needs: [test, msrv, docs, rustfmt, clippy]
+    needs: [test, msrv, lockfile, docs, rustfmt, clippy]
     runs-on: ubuntu-latest
+    if: "always()"
     steps:
-      - name: Done
-        run: exit 0
+      - name: Failed
+        run: exit 1
+        if: "contains(needs.*.result, 'failure') || contains(needs.*.result, 'cancelled') || contains(needs.*.result, 'skipped')"
   test:
     name: Test
     strategy:
       matrix:
-        os: ["ubuntu-latest", "windows-latest", "macos-latest"]
+        os: ["ubuntu-latest", "windows-latest", "macos-14"]
         rust: ["stable"]
     continue-on-error: ${{ matrix.rust != 'stable' }}
     runs-on: ${{ matrix.os }}
@@ -40,16 +46,13 @@ jobs:
       with:
         toolchain: ${{ matrix.rust }}
     - uses: Swatinem/rust-cache@v2
+    - uses: taiki-e/install-action@cargo-hack
     - name: Build
-      run: cargo test --no-run --workspace --all-features
-    - name: Default features
-      run: cargo test --workspace
-    - name: All features
-      run: cargo test --workspace --all-features
-    - name: No-default features
-      run: cargo test --workspace --no-default-features
+      run: cargo test --workspace --no-run
+    - name: Test
+      run: cargo hack test --feature-powerset --workspace
   msrv:
-    name: "Check MSRV: 1.74"
+    name: "Check MSRV"
     runs-on: ubuntu-latest
     steps:
     - name: Checkout repository
@@ -57,14 +60,11 @@ jobs:
     - name: Install Rust
       uses: dtolnay/rust-toolchain@stable
       with:
-        toolchain: "1.74"  # MSRV
+        toolchain: stable
     - uses: Swatinem/rust-cache@v2
+    - uses: taiki-e/install-action@cargo-hack
     - name: Default features
-      run: cargo check --workspace --all-targets
-    - name: All features
-      run: cargo check --workspace --all-targets --all-features
-    - name: No-default features
-      run: cargo check --workspace --all-targets --no-default-features
+      run: cargo hack check --feature-powerset --locked --rust-version --ignore-private --workspace --all-targets
   lockfile:
     runs-on: ubuntu-latest
     steps:
@@ -76,7 +76,7 @@ jobs:
         toolchain: stable
     - uses: Swatinem/rust-cache@v2
     - name: "Is lockfile updated?"
-      run: cargo fetch --locked
+      run: cargo update --workspace --locked
   docs:
     name: Docs
     runs-on: ubuntu-latest
@@ -86,7 +86,7 @@ jobs:
     - name: Install Rust
       uses: dtolnay/rust-toolchain@stable
       with:
-        toolchain: stable
+        toolchain: "1.76"  # STABLE
     - uses: Swatinem/rust-cache@v2
     - name: Check documentation
       env:
@@ -101,9 +101,7 @@ jobs:
     - name: Install Rust
       uses: dtolnay/rust-toolchain@stable
       with:
-        # Not MSRV because its harder to jump between versions and people are
-        # more likely to have stable
-        toolchain: stable
+        toolchain: "1.76"  # STABLE
         components: rustfmt
     - uses: Swatinem/rust-cache@v2
     - name: Check formatting
@@ -119,13 +117,13 @@ jobs:
     - name: Install Rust
       uses: dtolnay/rust-toolchain@stable
       with:
-        toolchain: "1.74"  # MSRV
+        toolchain: "1.76"  # STABLE
         components: clippy
     - uses: Swatinem/rust-cache@v2
     - name: Install SARIF tools
-      run: cargo install clippy-sarif --version 0.3.4 --locked  # Held back due to msrv
+      run: cargo install clippy-sarif --locked
     - name: Install SARIF tools
-      run: cargo install sarif-fmt --version 0.3.4 --locked # Held back due to msrv
+      run: cargo install sarif-fmt --locked
     - name: Check
       run: >
         cargo clippy --workspace --all-features --all-targets --message-format=json -- -D warnings --allow deprecated
@@ -140,3 +138,22 @@ jobs:
         wait-for-processing: true
     - name: Report status
       run: cargo clippy --workspace --all-features --all-targets -- -D warnings --allow deprecated
+  coverage:
+    name: Coverage
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v4
+    - name: Install Rust
+      uses: dtolnay/rust-toolchain@stable
+      with:
+        toolchain: stable
+    - uses: Swatinem/rust-cache@v2
+    - name: Install cargo-tarpaulin
+      run: cargo install cargo-tarpaulin
+    - name: Gather coverage
+      run: cargo tarpaulin --output-dir coverage --out lcov
+    - name: Publish to Coveralls
+      uses: coverallsapp/github-action@master
+      with:
+        github-token: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/committed.yml b/.github/workflows/committed.yml
index 0462558..e7a50fb 100644
--- a/.github/workflows/committed.yml
+++ b/.github/workflows/committed.yml
@@ -11,6 +11,10 @@ env:
   CARGO_TERM_COLOR: always
   CLICOLOR: 1
 
+concurrency:
+  group: "${{ github.workflow }}-${{ github.ref }}"
+  cancel-in-progress: true
+
 jobs:
   committed:
     name: Lint Commits
diff --git a/.github/workflows/pre-commit.yml b/.github/workflows/pre-commit.yml
index b2e94d4..3d04055 100644
--- a/.github/workflows/pre-commit.yml
+++ b/.github/workflows/pre-commit.yml
@@ -12,6 +12,10 @@ env:
   CARGO_TERM_COLOR: always
   CLICOLOR: 1
 
+concurrency:
+  group: "${{ github.workflow }}-${{ github.ref }}"
+  cancel-in-progress: true
+
 jobs:
   pre-commit:
     permissions:
@@ -20,4 +24,4 @@ jobs:
     steps:
     - uses: actions/checkout@v4
     - uses: actions/setup-python@v5
-    - uses: pre-commit/action@v3.0.0
+    - uses: pre-commit/action@v3.0.1
diff --git a/.github/workflows/rust-next.yml b/.github/workflows/rust-next.yml
index 3828a4d..17da987 100644
--- a/.github/workflows/rust-next.yml
+++ b/.github/workflows/rust-next.yml
@@ -12,12 +12,16 @@ env:
   CARGO_TERM_COLOR: always
   CLICOLOR: 1
 
+concurrency:
+  group: "${{ github.workflow }}-${{ github.ref }}"
+  cancel-in-progress: true
+
 jobs:
   test:
     name: Test
     strategy:
       matrix:
-        os: ["ubuntu-latest", "windows-latest", "macos-latest"]
+        os: ["ubuntu-latest", "windows-latest", "macos-latest", "macos-14"]
         rust: ["stable", "beta"]
         include:
         - os: ubuntu-latest
@@ -32,12 +36,11 @@ jobs:
       with:
         toolchain: ${{ matrix.rust }}
     - uses: Swatinem/rust-cache@v2
-    - name: Default features
-      run: cargo test --workspace
-    - name: All features
-      run: cargo test --workspace --all-features
-    - name: No-default features
-      run: cargo test --workspace --no-default-features
+    - uses: taiki-e/install-action@cargo-hack
+    - name: Build
+      run: cargo test --workspace --no-run
+    - name: Test
+      run: cargo hack test --feature-powerset --workspace
   latest:
     name: "Check latest dependencies"
     runs-on: ubuntu-latest
@@ -49,11 +52,10 @@ jobs:
       with:
         toolchain: stable
     - uses: Swatinem/rust-cache@v2
+    - uses: taiki-e/install-action@cargo-hack
     - name: Update dependencues
       run: cargo update
-    - name: Default features
-      run: cargo test --workspace --all-targets
-    - name: All features
-      run: cargo test --workspace --all-targets --all-features
-    - name: No-default features
-      run: cargo test --workspace --all-targets --no-default-features
+    - name: Build
+      run: cargo test --workspace --no-run
+    - name: Test
+      run: cargo hack test --feature-powerset --workspace
diff --git a/.github/workflows/spelling.yml b/.github/workflows/spelling.yml
index 12f7585..8e58d9e 100644
--- a/.github/workflows/spelling.yml
+++ b/.github/workflows/spelling.yml
@@ -10,6 +10,10 @@ env:
   CARGO_TERM_COLOR: always
   CLICOLOR: 1
 
+concurrency:
+  group: "${{ github.workflow }}-${{ github.ref }}"
+  cancel-in-progress: true
+
 jobs:
   spelling:
     name: Spell Check with Typos
diff --git a/Cargo.lock b/Cargo.lock
index fca4ee1..bf536a3 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -32,6 +32,17 @@ dependencies = [
  "tempfile",
 ]
 
+[[package]]
+name = "automod"
+version = "1.0.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "edf3ee19dbc0a46d740f6f0926bde8c50f02bdbc7b536842da28f6ac56513a8b"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.60",
+]
+
 [[package]]
 name = "bitflags"
 version = "1.3.2"
@@ -85,6 +96,7 @@ name = "escargot"
 version = "0.5.10"
 dependencies = [
  "assert_fs",
+ "automod",
  "log",
  "once_cell",
  "serde",
@@ -235,18 +247,18 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.60"
+version = "1.0.81"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dec2b086b7a862cf4de201096214fa870344cf922b2b30c167badb3af3195406"
+checksum = "3d1597b0c024618f09a9c3b8655b7e430397a36d23fdafec26d6965e9eec3eba"
 dependencies = [
  "unicode-ident",
 ]
 
 [[package]]
 name = "quote"
-version = "1.0.21"
+version = "1.0.36"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bbe448f377a7d6961e30f5955f9b8d106c3f5e449d493ee1b125c1d43c2b5179"
+checksum = "0fa76aaf39101c457836aec0ce2316dbdc3ab723cdda1c6bd4e6ad4208acaca7"
 dependencies = [
  "proc-macro2",
 ]
@@ -318,7 +330,7 @@ checksum = "a55492425aa53521babf6137309e7d34c20bbfbbfcfe2c7f3a047fd1f6b92c0c"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.105",
 ]
 
 [[package]]
@@ -343,6 +355,17 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "syn"
+version = "2.0.60"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "909518bc7b1c9b779f1bbf07f2929d35af9f0f37e47c6e9ef7f9dddc1e1821f3"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
 [[package]]
 name = "tempfile"
 version = "3.3.0"
diff --git a/Cargo.toml b/Cargo.toml
index f8b416c..b031598 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,14 +1,7 @@
-[package]
-name = "escargot"
-version = "0.5.10"
-description = "Cargo API written in Paris"
-authors = ["Ed Page <eopage@gmail.com>"]
-repository = "https://github.com/crate-ci/escargot.git"
-homepage = "https://github.com/crate-ci/escargot"
-documentation = "http://docs.rs/escargot/"
-readme = "README.md"
-categories = ["development-tools::build-utils"]
-keywords = ["cargo", "packaging"]
+[workspace]
+resolver = "2"
+
+[workspace.package]
 license = "MIT OR Apache-2.0"
 edition = "2021"
 rust-version = "1.74"  # MSRV
@@ -23,6 +16,89 @@ include = [
   "examples/**/*"
 ]
 
+[workspace.lints.rust]
+rust_2018_idioms = "warn"
+unreachable_pub = "warn"
+unsafe_op_in_unsafe_fn = "warn"
+unused_lifetimes = "warn"
+unused_macro_rules = "warn"
+unused_qualifications = "warn"
+
+[workspace.lints.clippy]
+bool_assert_comparison = "allow"
+branches_sharing_code = "allow"
+checked_conversions = "warn"
+collapsible_else_if = "allow"
+create_dir = "warn"
+dbg_macro = "warn"
+debug_assert_with_mut_call = "warn"
+doc_markdown = "warn"
+empty_enum = "warn"
+enum_glob_use = "warn"
+expl_impl_clone_on_copy = "warn"
+explicit_deref_methods = "warn"
+explicit_into_iter_loop = "warn"
+fallible_impl_from = "warn"
+filter_map_next = "warn"
+flat_map_option = "warn"
+float_cmp_const = "warn"
+fn_params_excessive_bools = "warn"
+from_iter_instead_of_collect = "warn"
+if_same_then_else = "allow"
+implicit_clone = "warn"
+imprecise_flops = "warn"
+inconsistent_struct_constructor = "warn"
+inefficient_to_string = "warn"
+infinite_loop = "warn"
+invalid_upcast_comparisons = "warn"
+items_after_statements = "warn"
+large_digit_groups = "warn"
+large_stack_arrays = "warn"
+large_types_passed_by_value = "warn"
+let_and_return = "allow"  # sometimes good to name what you are returning
+linkedlist = "warn"
+lossy_float_literal = "warn"
+macro_use_imports = "warn"
+match_wildcard_for_single_variants = "warn"
+mem_forget = "warn"
+mutex_integer = "warn"
+needless_continue = "warn"
+needless_for_each = "warn"
+negative_feature_names = "warn"
+path_buf_push_overwrite = "warn"
+ptr_as_ptr = "warn"
+rc_mutex = "warn"
+redundant_feature_names = "warn"
+ref_option_ref = "warn"
+rest_pat_in_fully_bound_structs = "warn"
+same_functions_in_if_condition = "warn"
+self_named_module_files = "warn"
+semicolon_if_nothing_returned = "warn"
+single_match_else = "warn"
+str_to_string = "warn"
+string_add = "warn"
+string_add_assign = "warn"
+string_lit_as_bytes = "warn"
+string_to_string = "warn"
+todo = "warn"
+trait_duplication_in_bounds = "warn"
+verbose_file_reads = "warn"
+wildcard_imports = "warn"
+zero_sized_map_values = "warn"
+
+[package]
+name = "escargot"
+version = "0.5.10"
+description = "Cargo API written in Paris"
+repository = "https://github.com/crate-ci/escargot.git"
+homepage = "https://github.com/crate-ci/escargot"
+categories = ["development-tools::build-utils"]
+keywords = ["cargo", "packaging"]
+license.workspace = true
+edition.workspace = true
+rust-version.workspace = true
+include.workspace = true
+
 [package.metadata.docs.rs]
 all-features = true
 rustdoc-args = ["--cfg", "docsrs"]
@@ -36,15 +112,6 @@ pre-release-replacements = [
   {file="CHANGELOG.md", search="<!-- next-url -->", replace="<!-- next-url -->\n[Unreleased]: https://github.com/crate-ci/escargot/compare/{{tag_name}}...HEAD", exactly=1},
 ]
 
-[dependencies]
-serde = { version = "1.0.113", features = ["derive"] }
-serde_json = "1.0"
-once_cell = "1.2.0"
-log = "0.4.4"
-
-[dev-dependencies]
-assert_fs = "1.1"
-
 [features]
 # Upcoming features in cargo.
 cargo_unstable = []
@@ -56,3 +123,16 @@ strict_unstable = []
 # This is for when using `escargot` in tests and you want logged output to
 # instead be printed because no logger is configured.
 print = []
+
+[dependencies]
+serde = { version = "1.0.113", features = ["derive"] }
+serde_json = "1.0"
+once_cell = "1.2.0"
+log = "0.4.4"
+
+[dev-dependencies]
+assert_fs = "1.1"
+automod = "1.0.14"
+
+[lints]
+workspace = true
diff --git a/src/build.rs b/src/build.rs
index 15f36f8..ea5ad96 100644
--- a/src/build.rs
+++ b/src/build.rs
@@ -1,10 +1,10 @@
-use std::ffi::{self, OsStr};
+use std::ffi::OsStr;
 use std::process;
 
 use crate::cargo::Cargo;
 use crate::cargo::CURRENT_TARGET;
-use crate::error::*;
-use crate::msg::*;
+use crate::error::{CargoError, CargoResult};
+use crate::msg::CommandMessages;
 use crate::run::CargoRun;
 #[cfg(feature = "test_unstable")]
 use crate::test::CargoTest;
@@ -22,7 +22,7 @@ use crate::test::CargoTest;
 ///     .bin("bin")
 ///     .current_release()
 ///     .current_target()
-///     .manifest_path("tests/fixtures/bin/Cargo.toml")
+///     .manifest_path("tests/testsuite/fixtures/bin/Cargo.toml")
 ///     .target_dir(temp.path())
 ///     .exec()
 ///     .unwrap();
@@ -47,7 +47,7 @@ impl CargoBuild {
     /// let temp = assert_fs::TempDir::new().unwrap();
     /// escargot::CargoBuild::new()
     ///     .bin("bin")
-    ///     .manifest_path("tests/fixtures/bin/Cargo.toml")
+    ///     .manifest_path("tests/testsuite/fixtures/bin/Cargo.toml")
     ///     .target_dir(temp.path())
     ///     .exec()
     ///     .unwrap();
@@ -77,12 +77,12 @@ impl CargoBuild {
     /// escargot::CargoBuild::new()
     ///     .package("bin")
     ///     .bin("bin")
-    ///     .manifest_path("tests/fixtures/bin/Cargo.toml")
+    ///     .manifest_path("tests/testsuite/fixtures/bin/Cargo.toml")
     ///     .target_dir(temp.path())
     ///     .exec()
     ///     .unwrap();
     /// ```
-    pub fn package<S: AsRef<ffi::OsStr>>(self, name: S) -> Self {
+    pub fn package<S: AsRef<OsStr>>(self, name: S) -> Self {
         self.arg("--package").arg(name)
     }
 
@@ -97,7 +97,7 @@ impl CargoBuild {
     /// let temp = assert_fs::TempDir::new().unwrap();
     /// escargot::CargoBuild::new()
     ///     .bins()
-    ///     .manifest_path("tests/fixtures/bin/Cargo.toml")
+    ///     .manifest_path("tests/testsuite/fixtures/bin/Cargo.toml")
     ///     .target_dir(temp.path())
     ///     .exec()
     ///     .unwrap();
@@ -118,12 +118,12 @@ impl CargoBuild {
     /// let temp = assert_fs::TempDir::new().unwrap();
     /// escargot::CargoBuild::new()
     ///     .bin("bin")
-    ///     .manifest_path("tests/fixtures/bin/Cargo.toml")
+    ///     .manifest_path("tests/testsuite/fixtures/bin/Cargo.toml")
     ///     .target_dir(temp.path())
     ///     .exec()
     ///     .unwrap();
     /// ```
-    pub fn bin<S: AsRef<ffi::OsStr>>(mut self, name: S) -> Self {
+    pub fn bin<S: AsRef<OsStr>>(mut self, name: S) -> Self {
         self.bin = true;
         self.arg("--bin").arg(name)
     }
@@ -139,7 +139,7 @@ impl CargoBuild {
     /// let temp = assert_fs::TempDir::new().unwrap();
     /// escargot::CargoBuild::new()
     ///     .examples()
-    ///     .manifest_path("tests/fixtures/example/Cargo.toml")
+    ///     .manifest_path("tests/testsuite/fixtures/example/Cargo.toml")
     ///     .target_dir(temp.path())
     ///     .exec()
     ///     .unwrap();
@@ -160,12 +160,12 @@ impl CargoBuild {
     /// let temp = assert_fs::TempDir::new().unwrap();
     /// escargot::CargoBuild::new()
     ///     .example("example_fixture")
-    ///     .manifest_path("tests/fixtures/example/Cargo.toml")
+    ///     .manifest_path("tests/testsuite/fixtures/example/Cargo.toml")
     ///     .target_dir(temp.path())
     ///     .exec()
     ///     .unwrap();
     /// ```
-    pub fn example<S: AsRef<ffi::OsStr>>(mut self, name: S) -> Self {
+    pub fn example<S: AsRef<OsStr>>(mut self, name: S) -> Self {
         self.example = true;
         self.arg("--example").arg(name)
     }
@@ -181,7 +181,7 @@ impl CargoBuild {
     /// let temp = assert_fs::TempDir::new().unwrap();
     /// escargot::CargoBuild::new()
     ///     .tests()
-    ///     .manifest_path("tests/fixtures/test/Cargo.toml")
+    ///     .manifest_path("tests/testsuite/fixtures/test/Cargo.toml")
     ///     .target_dir(temp.path())
     ///     .exec()
     ///     .unwrap();
@@ -201,17 +201,17 @@ impl CargoBuild {
     /// let temp = assert_fs::TempDir::new().unwrap();
     /// escargot::CargoBuild::new()
     ///     .test("test")
-    ///     .manifest_path("tests/fixtures/test/Cargo.toml")
+    ///     .manifest_path("tests/testsuite/fixtures/test/Cargo.toml")
     ///     .target_dir(temp.path())
     ///     .exec()
     ///     .unwrap();
     /// ```
-    pub fn test<S: AsRef<ffi::OsStr>>(self, name: S) -> Self {
+    pub fn test<S: AsRef<OsStr>>(self, name: S) -> Self {
         self.arg("--test").arg(name)
     }
 
     /// Path to Cargo.toml
-    pub fn manifest_path<S: AsRef<ffi::OsStr>>(self, path: S) -> Self {
+    pub fn manifest_path<S: AsRef<OsStr>>(self, path: S) -> Self {
         self.arg("--manifest-path").arg(path)
     }
 
@@ -253,7 +253,7 @@ impl CargoBuild {
     }
 
     /// Build for the target triplet.
-    pub fn target<S: AsRef<ffi::OsStr>>(self, triplet: S) -> Self {
+    pub fn target<S: AsRef<OsStr>>(self, triplet: S) -> Self {
         self.arg("--target").arg(triplet)
     }
 
@@ -263,7 +263,7 @@ impl CargoBuild {
     }
 
     /// Directory for all generated artifacts
-    pub fn target_dir<S: AsRef<ffi::OsStr>>(self, dir: S) -> Self {
+    pub fn target_dir<S: AsRef<OsStr>>(self, dir: S) -> Self {
         self.arg("--target-dir").arg(dir)
     }
 
@@ -278,14 +278,14 @@ impl CargoBuild {
     }
 
     /// Space-separated list of features to activate
-    pub fn features<S: AsRef<ffi::OsStr>>(self, features: S) -> Self {
+    pub fn features<S: AsRef<OsStr>>(self, features: S) -> Self {
         self.arg("--features").arg(features)
     }
 
     /// Manually pass an argument that is unsupported.
     ///
     /// Caution: Passing in `--` can throw off the API.
-    pub fn arg<S: AsRef<ffi::OsStr>>(mut self, arg: S) -> Self {
+    pub fn arg<S: AsRef<OsStr>>(mut self, arg: S) -> Self {
         self.cmd.arg(arg);
         self
     }
@@ -293,7 +293,7 @@ impl CargoBuild {
     /// Manually pass arguments that are unsupported.
     ///
     /// Caution: Passing in `--` can throw off the API.
-    pub fn args<I: IntoIterator<Item = S>, S: AsRef<ffi::OsStr>>(mut self, args: I) -> Self {
+    pub fn args<I: IntoIterator<Item = S>, S: AsRef<OsStr>>(mut self, args: I) -> Self {
         self.cmd.args(args);
         self
     }
@@ -316,7 +316,7 @@ impl CargoBuild {
     ///     .bin("bin")
     ///     .current_release()
     ///     .current_target()
-    ///     .manifest_path("tests/fixtures/bin/Cargo.toml")
+    ///     .manifest_path("tests/testsuite/fixtures/bin/Cargo.toml")
     ///     .target_dir(temp.path())
     ///     .run()
     ///     .unwrap();
@@ -342,7 +342,7 @@ impl CargoBuild {
     ///     .test("test")
     ///     .current_release()
     ///     .current_target()
-    ///     .manifest_path("tests/fixtures/test/Cargo.toml")
+    ///     .manifest_path("tests/testsuite/fixtures/test/Cargo.toml")
     ///     .target_dir(temp.path())
     ///     .run_tests().unwrap()
     ///     .next().unwrap().unwrap();
diff --git a/src/format/mod.rs b/src/format/mod.rs
index 9c96861..c121b38 100644
--- a/src/format/mod.rs
+++ b/src/format/mod.rs
@@ -230,6 +230,7 @@ pub(crate) fn log_message(msg: &Message<'_>) {
 }
 
 #[cfg(feature = "print")]
+#[allow(clippy::print_stderr)]
 pub(crate) fn log_message(msg: &Message<'_>) {
     match msg {
         Message::BuildFinished(ref finished) => {
diff --git a/src/lib.rs b/src/lib.rs
index dd65591..984e830 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -36,7 +36,10 @@
 //!     .unwrap();
 //! ```
 
+#![allow(clippy::self_named_module_files)] // false positive
 #![warn(missing_docs)]
+#![warn(clippy::print_stderr)]
+#![warn(clippy::print_stdout)]
 #![cfg_attr(docsrs, feature(doc_auto_cfg))]
 
 #[macro_use]
diff --git a/src/msg.rs b/src/msg.rs
index b54a1d4..79cf5cf 100644
--- a/src/msg.rs
+++ b/src/msg.rs
@@ -3,7 +3,7 @@ use std::io::BufRead;
 use std::io::Read;
 use std::process;
 
-use crate::error::*;
+use crate::error::{CargoError, CargoResult, ErrorKind};
 use crate::format;
 
 /// Messages returned from a cargo sub-command.
diff --git a/src/run.rs b/src/run.rs
index e8aed96..f9b9978 100644
--- a/src/run.rs
+++ b/src/run.rs
@@ -1,9 +1,9 @@
 use std::path;
 use std::process;
 
-use crate::error::*;
+use crate::error::{CargoError, CargoResult, ErrorKind};
 use crate::format;
-use crate::msg::*;
+use crate::msg::CommandMessages;
 
 /// The `run` subcommand (emulated).
 ///
@@ -26,7 +26,7 @@ use crate::msg::*;
 ///     .bin("bin")
 ///     .current_release()
 ///     .current_target()
-///     .manifest_path("tests/fixtures/bin/Cargo.toml")
+///     .manifest_path("tests/testsuite/fixtures/bin/Cargo.toml")
 ///     .target_dir(temp.path())
 ///     .run()
 ///     .unwrap();
@@ -68,7 +68,7 @@ impl CargoRun {
     ///     .bin("bin")
     ///     .current_release()
     ///     .current_target()
-    ///     .manifest_path("tests/fixtures/bin/Cargo.toml")
+    ///     .manifest_path("tests/testsuite/fixtures/bin/Cargo.toml")
     ///     .target_dir(temp.path())
     ///     .run()
     ///     .unwrap();
@@ -81,7 +81,7 @@ impl CargoRun {
     ///     .example("example_fixture")
     ///     .current_release()
     ///     .current_target()
-    ///     .manifest_path("tests/fixtures/example/Cargo.toml")
+    ///     .manifest_path("tests/testsuite/fixtures/example/Cargo.toml")
     ///     .target_dir(temp.path())
     ///     .run()
     ///     .unwrap();
@@ -103,7 +103,7 @@ impl CargoRun {
     ///     .bin("bin")
     ///     .current_release()
     ///     .current_target()
-    ///     .manifest_path("tests/fixtures/bin/Cargo.toml")
+    ///     .manifest_path("tests/testsuite/fixtures/bin/Cargo.toml")
     ///     .target_dir(temp.path())
     ///     .run()
     ///     .unwrap()
@@ -122,7 +122,7 @@ impl CargoRun {
     ///     .example("example_fixture")
     ///     .current_release()
     ///     .current_target()
-    ///     .manifest_path("tests/fixtures/example/Cargo.toml")
+    ///     .manifest_path("tests/testsuite/fixtures/example/Cargo.toml")
     ///     .target_dir(temp.path())
     ///     .run()
     ///     .unwrap()
@@ -143,7 +143,7 @@ fn extract_bin<'a>(msg: &'a format::Message<'_>, desired_kind: &str) -> Option<&
                 && art.target.crate_types == ["bin"]
                 && art.target.kind == [desired_kind]
             {
-                Some(art.filenames.get(0).expect("files must exist"))
+                Some(art.filenames.first().expect("files must exist"))
             } else {
                 None
             }
diff --git a/src/test.rs b/src/test.rs
index 5aebacf..c11ab1a 100644
--- a/src/test.rs
+++ b/src/test.rs
@@ -1,9 +1,9 @@
 use std::path;
 use std::process;
 
-use crate::error::*;
+use crate::error::{CargoError, CargoResult};
 use crate::format;
-use crate::msg::*;
+use crate::msg::CommandMessages;
 
 /// The `test` subcommand (emulated).
 ///
@@ -28,7 +28,7 @@ use crate::msg::*;
 /// let temp = assert_fs::TempDir::new().unwrap();
 /// let run = escargot::CargoBuild::new()
 ///     .test("test")
-///     .manifest_path("tests/fixtures/test/Cargo.toml")
+///     .manifest_path("tests/testsuite/fixtures/test/Cargo.toml")
 ///     .target_dir(temp.path())
 ///     .run_tests().unwrap()
 ///     .next().unwrap().unwrap();
@@ -64,7 +64,7 @@ impl CargoTest {
     ///     .tests()
     ///     .current_release()
     ///     .current_target()
-    ///     .manifest_path("tests/fixtures/test/Cargo.toml")
+    ///     .manifest_path("tests/testsuite/fixtures/test/Cargo.toml")
     ///     .target_dir(temp.path())
     ///     .run_tests()
     ///     .unwrap()
@@ -93,7 +93,7 @@ impl CargoTest {
     ///     .tests()
     ///     .current_release()
     ///     .current_target()
-    ///     .manifest_path("tests/fixtures/test/Cargo.toml")
+    ///     .manifest_path("tests/testsuite/fixtures/test/Cargo.toml")
     ///     .target_dir(temp.path())
     ///     .run_tests()
     ///     .unwrap()
@@ -122,7 +122,7 @@ impl CargoTest {
     ///     .tests()
     ///     .current_release()
     ///     .current_target()
-    ///     .manifest_path("tests/fixtures/test/Cargo.toml")
+    ///     .manifest_path("tests/testsuite/fixtures/test/Cargo.toml")
     ///     .target_dir(temp.path())
     ///     .run_tests()
     ///     .unwrap()
@@ -154,13 +154,13 @@ fn extract_bin(msg: &format::Message<'_>) -> Option<CargoTest> {
             if art.profile.test {
                 let bin_path = art
                     .filenames
-                    .get(0)
+                    .first()
                     .expect("files must exist")
                     .to_path_buf();
                 let kind = art
                     .target
                     .kind
-                    .get(0)
+                    .first()
                     .expect("kind must exist")
                     .as_ref()
                     .to_owned();
diff --git a/tests/build.rs b/tests/testsuite/build.rs
similarity index 90%
rename from tests/build.rs
rename to tests/testsuite/build.rs
index d5e03a2..520785d 100644
--- a/tests/build.rs
+++ b/tests/testsuite/build.rs
@@ -2,7 +2,7 @@ fn test_fixture(name: &str) {
     let temp = assert_fs::TempDir::new().unwrap();
 
     let msgs = escargot::CargoBuild::new()
-        .manifest_path(format!("tests/fixtures/{}/Cargo.toml", name))
+        .manifest_path(format!("tests/testsuite/fixtures/{}/Cargo.toml", name))
         .current_release()
         .current_target()
         .target_dir(temp.path())
@@ -51,7 +51,7 @@ fn test_dependency() {
 #[test]
 fn test_error() {
     let msgs: Vec<_> = escargot::CargoBuild::new()
-        .manifest_path("tests/fixtures/error/Cargo.toml")
+        .manifest_path("tests/testsuite/fixtures/error/Cargo.toml")
         .current_release()
         .current_target()
         .exec()
diff --git a/tests/fixtures/bin/Cargo.toml b/tests/testsuite/fixtures/bin/Cargo.toml
similarity index 89%
rename from tests/fixtures/bin/Cargo.toml
rename to tests/testsuite/fixtures/bin/Cargo.toml
index c6c4eca..093f2c8 100644
--- a/tests/fixtures/bin/Cargo.toml
+++ b/tests/testsuite/fixtures/bin/Cargo.toml
@@ -1,3 +1,5 @@
+[workspace]
+
 [package]
 name = "bin"
 version = "0.1.0"
diff --git a/tests/fixtures/bin/src/main.rs b/tests/testsuite/fixtures/bin/src/main.rs
similarity index 100%
rename from tests/fixtures/bin/src/main.rs
rename to tests/testsuite/fixtures/bin/src/main.rs
diff --git a/tests/fixtures/bin_lib/Cargo.toml b/tests/testsuite/fixtures/bin_lib/Cargo.toml
similarity index 90%
rename from tests/fixtures/bin_lib/Cargo.toml
rename to tests/testsuite/fixtures/bin_lib/Cargo.toml
index 410ae62..f2e661b 100644
--- a/tests/fixtures/bin_lib/Cargo.toml
+++ b/tests/testsuite/fixtures/bin_lib/Cargo.toml
@@ -1,3 +1,5 @@
+[workspace]
+
 [package]
 name = "bin_lib"
 version = "0.1.0"
diff --git a/tests/fixtures/bin_lib/src/lib.rs b/tests/testsuite/fixtures/bin_lib/src/lib.rs
similarity index 100%
rename from tests/fixtures/bin_lib/src/lib.rs
rename to tests/testsuite/fixtures/bin_lib/src/lib.rs
diff --git a/tests/fixtures/bin_lib/src/main.rs b/tests/testsuite/fixtures/bin_lib/src/main.rs
similarity index 100%
rename from tests/fixtures/bin_lib/src/main.rs
rename to tests/testsuite/fixtures/bin_lib/src/main.rs
diff --git a/tests/fixtures/dep/Cargo.toml b/tests/testsuite/fixtures/dep/Cargo.toml
similarity index 91%
rename from tests/fixtures/dep/Cargo.toml
rename to tests/testsuite/fixtures/dep/Cargo.toml
index 9ae907e..ebf68d2 100644
--- a/tests/fixtures/dep/Cargo.toml
+++ b/tests/testsuite/fixtures/dep/Cargo.toml
@@ -1,3 +1,5 @@
+[workspace]
+
 [package]
 name = "dep"
 version = "0.1.0"
diff --git a/tests/fixtures/dep/src/lib.rs b/tests/testsuite/fixtures/dep/src/lib.rs
similarity index 100%
rename from tests/fixtures/dep/src/lib.rs
rename to tests/testsuite/fixtures/dep/src/lib.rs
diff --git a/tests/fixtures/error/Cargo.toml b/tests/testsuite/fixtures/error/Cargo.toml
similarity index 90%
rename from tests/fixtures/error/Cargo.toml
rename to tests/testsuite/fixtures/error/Cargo.toml
index fdcef76..966853b 100644
--- a/tests/fixtures/error/Cargo.toml
+++ b/tests/testsuite/fixtures/error/Cargo.toml
@@ -1,3 +1,5 @@
+[workspace]
+
 [package]
 name = "error"
 version = "0.1.0"
diff --git a/tests/fixtures/error/src/lib.rs b/tests/testsuite/fixtures/error/src/lib.rs
similarity index 100%
rename from tests/fixtures/error/src/lib.rs
rename to tests/testsuite/fixtures/error/src/lib.rs
diff --git a/tests/fixtures/error/src/main.rs b/tests/testsuite/fixtures/error/src/main.rs
similarity index 100%
rename from tests/fixtures/error/src/main.rs
rename to tests/testsuite/fixtures/error/src/main.rs
diff --git a/tests/fixtures/example/Cargo.toml b/tests/testsuite/fixtures/example/Cargo.toml
similarity index 88%
rename from tests/fixtures/example/Cargo.toml
rename to tests/testsuite/fixtures/example/Cargo.toml
index e9ace7d..213b7be 100644
--- a/tests/fixtures/example/Cargo.toml
+++ b/tests/testsuite/fixtures/example/Cargo.toml
@@ -1,3 +1,5 @@
+[workspace]
+
 [package]
 name = "example"
 version = "0.1.0"
diff --git a/tests/fixtures/example/examples/example_fixture.rs b/tests/testsuite/fixtures/example/examples/example_fixture.rs
similarity index 100%
rename from tests/fixtures/example/examples/example_fixture.rs
rename to tests/testsuite/fixtures/example/examples/example_fixture.rs
diff --git a/tests/fixtures/example/src/lib.rs b/tests/testsuite/fixtures/example/src/lib.rs
similarity index 100%
rename from tests/fixtures/example/src/lib.rs
rename to tests/testsuite/fixtures/example/src/lib.rs
diff --git a/tests/fixtures/lib/Cargo.toml b/tests/testsuite/fixtures/lib/Cargo.toml
similarity index 89%
rename from tests/fixtures/lib/Cargo.toml
rename to tests/testsuite/fixtures/lib/Cargo.toml
index 4292e6c..554f2ea 100644
--- a/tests/fixtures/lib/Cargo.toml
+++ b/tests/testsuite/fixtures/lib/Cargo.toml
@@ -1,3 +1,5 @@
+[workspace]
+
 [package]
 name = "lib"
 version = "0.1.0"
diff --git a/tests/fixtures/lib/src/lib.rs b/tests/testsuite/fixtures/lib/src/lib.rs
similarity index 100%
rename from tests/fixtures/lib/src/lib.rs
rename to tests/testsuite/fixtures/lib/src/lib.rs
diff --git a/tests/fixtures/script/Cargo.toml b/tests/testsuite/fixtures/script/Cargo.toml
similarity index 90%
rename from tests/fixtures/script/Cargo.toml
rename to tests/testsuite/fixtures/script/Cargo.toml
index 3c1e443..34dbafb 100644
--- a/tests/fixtures/script/Cargo.toml
+++ b/tests/testsuite/fixtures/script/Cargo.toml
@@ -1,3 +1,5 @@
+[workspace]
+
 [package]
 name = "script"
 version = "0.1.0"
diff --git a/tests/fixtures/script/build.rs b/tests/testsuite/fixtures/script/build.rs
similarity index 100%
rename from tests/fixtures/script/build.rs
rename to tests/testsuite/fixtures/script/build.rs
diff --git a/tests/fixtures/script/src/lib.rs b/tests/testsuite/fixtures/script/src/lib.rs
similarity index 100%
rename from tests/fixtures/script/src/lib.rs
rename to tests/testsuite/fixtures/script/src/lib.rs
diff --git a/tests/fixtures/test/Cargo.toml b/tests/testsuite/fixtures/test/Cargo.toml
similarity index 89%
rename from tests/fixtures/test/Cargo.toml
rename to tests/testsuite/fixtures/test/Cargo.toml
index 272ef4a..425b6e6 100644
--- a/tests/fixtures/test/Cargo.toml
+++ b/tests/testsuite/fixtures/test/Cargo.toml
@@ -1,3 +1,5 @@
+[workspace]
+
 [package]
 name = "test_fixture"
 version = "0.1.0"
diff --git a/tests/fixtures/test/src/lib.rs b/tests/testsuite/fixtures/test/src/lib.rs
similarity index 100%
rename from tests/fixtures/test/src/lib.rs
rename to tests/testsuite/fixtures/test/src/lib.rs
diff --git a/tests/fixtures/test/src/main.rs b/tests/testsuite/fixtures/test/src/main.rs
similarity index 100%
rename from tests/fixtures/test/src/main.rs
rename to tests/testsuite/fixtures/test/src/main.rs
diff --git a/tests/fixtures/test/tests/test.rs b/tests/testsuite/fixtures/test/tests/test.rs
similarity index 100%
rename from tests/fixtures/test/tests/test.rs
rename to tests/testsuite/fixtures/test/tests/test.rs
diff --git a/tests/fixtures/warn/Cargo.toml b/tests/testsuite/fixtures/warn/Cargo.toml
similarity index 89%
rename from tests/fixtures/warn/Cargo.toml
rename to tests/testsuite/fixtures/warn/Cargo.toml
index 2c31429..c0413fc 100644
--- a/tests/fixtures/warn/Cargo.toml
+++ b/tests/testsuite/fixtures/warn/Cargo.toml
@@ -1,3 +1,5 @@
+[workspace]
+
 [package]
 name = "warn"
 version = "0.1.0"
diff --git a/tests/fixtures/warn/src/lib.rs b/tests/testsuite/fixtures/warn/src/lib.rs
similarity index 100%
rename from tests/fixtures/warn/src/lib.rs
rename to tests/testsuite/fixtures/warn/src/lib.rs
diff --git a/tests/fixtures/warn/src/main.rs b/tests/testsuite/fixtures/warn/src/main.rs
similarity index 100%
rename from tests/fixtures/warn/src/main.rs
rename to tests/testsuite/fixtures/warn/src/main.rs
diff --git a/tests/testsuite/main.rs b/tests/testsuite/main.rs
new file mode 100644
index 0000000..4441374
--- /dev/null
+++ b/tests/testsuite/main.rs
@@ -0,0 +1 @@
+automod::dir!("tests/testsuite");
diff --git a/tests/run.rs b/tests/testsuite/run.rs
similarity index 81%
rename from tests/run.rs
rename to tests/testsuite/run.rs
index cef927a..af6c002 100644
--- a/tests/run.rs
+++ b/tests/testsuite/run.rs
@@ -2,7 +2,7 @@ fn test_fixture(name: &str) {
     let temp = assert_fs::TempDir::new().unwrap();
 
     let cmd = escargot::CargoBuild::new()
-        .manifest_path(format!("tests/fixtures/{}/Cargo.toml", name))
+        .manifest_path(format!("tests/testsuite/fixtures/{}/Cargo.toml", name))
         .current_release()
         .current_target()
         .target_dir(temp.path())
@@ -25,7 +25,7 @@ fn test_warn() {
 #[test]
 fn test_error() {
     let result = escargot::CargoBuild::new()
-        .manifest_path("tests/fixtures/error/Cargo.toml")
+        .manifest_path("tests/testsuite/fixtures/error/Cargo.toml")
         .current_release()
         .current_target()
         .run();