fix(toml): Warn, rather than fail publish, if targets are excluded

This could offer performance gains when parsing a published
manifest since the targets don't need to be discovered.
To see this, we'd first need to stop discovering potential targets even when it isn't
needed.

src/cargo/util/toml/mod.rs

@@ -264,7 +264,7 @@ fn resolve_toml(
     manifest_file: &Path,
     gctx: &GlobalContext,
     warnings: &mut Vec<String>,
-    _errors: &mut Vec<String>,
+    errors: &mut Vec<String>,
 ) -> CargoResult<manifest::TomlManifest> {
     if let Some(workspace) = &original_toml.workspace {
         if workspace.resolver.as_deref() == Some("3") {
@@ -277,11 +277,11 @@ fn resolve_toml(
         package: None,
         project: None,
         profile: original_toml.profile.clone(),
-        lib: original_toml.lib.clone(),
+        lib: None,
-        bin: original_toml.bin.clone(),
+        bin: None,
-        example: original_toml.example.clone(),
+        example: None,
-        test: original_toml.test.clone(),
+        test: None,
-        bench: original_toml.bench.clone(),
+        bench: None,
         dependencies: None,
         dev_dependencies: None,
         dev_dependencies2: None,
@@ -318,6 +318,47 @@ fn resolve_toml(
             });
         resolved_toml.package = Some(resolved_package);
 
+        resolved_toml.lib = targets::resolve_lib(
+            original_toml.lib.as_ref(),
+            package_root,
+            &original_package.name,
+            edition,
+            warnings,
+        )?;
+        resolved_toml.bin = Some(targets::resolve_bins(
+            original_toml.bin.as_ref(),
+            package_root,
+            &original_package.name,
+            edition,
+            original_package.autobins,
+            warnings,
+            resolved_toml.lib.is_some(),
+        )?);
+        resolved_toml.example = Some(targets::resolve_examples(
+            original_toml.example.as_ref(),
+            package_root,
+            edition,
+            original_package.autoexamples,
+            warnings,
+            errors,
+        )?);
+        resolved_toml.test = Some(targets::resolve_tests(
+            original_toml.test.as_ref(),
+            package_root,
+            edition,
+            original_package.autotests,
+            warnings,
+            errors,
+        )?);
+        resolved_toml.bench = Some(targets::resolve_benches(
+            original_toml.bench.as_ref(),
+            package_root,
+            edition,
+            original_package.autobenches,
+            warnings,
+            errors,
+        )?);
+
         let activated_opt_deps = resolved_toml
             .features
             .as_ref()
@@ -519,10 +560,10 @@ fn resolve_package_toml<'a>(
             .map(manifest::InheritableField::Value),
         workspace: original_package.workspace.clone(),
         im_a_teapot: original_package.im_a_teapot.clone(),
-        autobins: original_package.autobins.clone(),
+        autobins: Some(false),
-        autoexamples: original_package.autoexamples.clone(),
+        autoexamples: Some(false),
-        autotests: original_package.autotests.clone(),
+        autotests: Some(false),
-        autobenches: original_package.autobenches.clone(),
+        autobenches: Some(false),
         default_run: original_package.default_run.clone(),
         description: original_package
             .description
@@ -1149,8 +1190,8 @@ fn to_real_manifest(
     // If we have a lib with no path, use the inferred lib or else the package name.
     let targets = to_targets(
         &features,
+        &original_toml,
         &resolved_toml,
-        package_name,
         package_root,
         edition,
         &resolved_package.metabuild,
@@ -2520,14 +2561,14 @@ fn prepare_toml_for_publish(
     }
 
     let lib = if let Some(target) = &me.lib {
-        Some(prepare_target_for_publish(target, "library")?)
+        prepare_target_for_publish(target, included, "library", ws.gctx())?
     } else {
         None
     };
-    let bin = prepare_targets_for_publish(me.bin.as_ref(), "binary")?;
+    let bin = prepare_targets_for_publish(me.bin.as_ref(), included, "binary", ws.gctx())?;
-    let example = prepare_targets_for_publish(me.example.as_ref(), "example")?;
+    let example = prepare_targets_for_publish(me.example.as_ref(), included, "example", ws.gctx())?;
-    let test = prepare_targets_for_publish(me.test.as_ref(), "test")?;
+    let test = prepare_targets_for_publish(me.test.as_ref(), included, "test", ws.gctx())?;
-    let bench = prepare_targets_for_publish(me.bench.as_ref(), "benchmark")?;
+    let bench = prepare_targets_for_publish(me.bench.as_ref(), included, "benchmark", ws.gctx())?;
 
     let all = |_d: &manifest::TomlDependency| true;
     let mut manifest = manifest::TomlManifest {
@@ -2685,7 +2726,9 @@ fn prepare_toml_for_publish(
 
 fn prepare_targets_for_publish(
     targets: Option<&Vec<manifest::TomlTarget>>,
+    included: &[PathBuf],
     context: &str,
+    gctx: &GlobalContext,
 ) -> CargoResult<Option<Vec<manifest::TomlTarget>>> {
     let Some(targets) = targets else {
         return Ok(None);
@@ -2693,23 +2736,41 @@ fn prepare_targets_for_publish(
 
     let mut prepared = Vec::with_capacity(targets.len());
     for target in targets {
-        let target = prepare_target_for_publish(target, context)?;
+        let Some(target) = prepare_target_for_publish(target, included, context, gctx)? else {
+            continue;
+        };
         prepared.push(target);
     }
 
+    if prepared.is_empty() {
+        Ok(None)
+    } else {
         Ok(Some(prepared))
+    }
 }
 
 fn prepare_target_for_publish(
     target: &manifest::TomlTarget,
+    included: &[PathBuf],
     context: &str,
-) -> CargoResult<manifest::TomlTarget> {
+    gctx: &GlobalContext,
-    let mut target = target.clone();
+) -> CargoResult<Option<manifest::TomlTarget>> {
-    if let Some(path) = target.path {
+    let path = target.path.as_ref().expect("previously resolved");
     let path = normalize_path(&path.0);
-        target.path = Some(manifest::PathValue(normalize_path_sep(path, context)?));
+    if !included.contains(&path) {
+        let name = target.name.as_ref().expect("previously resolved");
+        gctx.shell().warn(format!(
+            "ignoring {context} `{name}` as `{}` is not included in the published package",
+            path.display()
+        ))?;
+        return Ok(None);
     }
-    Ok(target)
+
+    let mut target = target.clone();
+    let path = normalize_path_sep(path, context)?;
+    target.path = Some(manifest::PathValue(path.into()));
+
+    Ok(Some(target))
 }
 
 fn normalize_path_sep(path: PathBuf, context: &str) -> CargoResult<PathBuf> {

src/cargo/util/toml/targets.rs

@@ -34,8 +34,8 @@ const DEFAULT_EXAMPLE_DIR_NAME: &'static str = "examples";
 #[tracing::instrument(skip_all)]
 pub(super) fn to_targets(
     features: &Features,
+    original_toml: &TomlManifest,
     resolved_toml: &TomlManifest,
-    package_name: &str,
     package_root: &Path,
     edition: Edition,
     metabuild: &Option<StringOrVec>,
@@ -44,26 +44,14 @@ pub(super) fn to_targets(
 ) -> CargoResult<Vec<Target>> {
     let mut targets = Vec::new();
 
-    let has_lib;
-
-    let lib = resolve_lib(
-        resolved_toml.lib.as_ref(),
-        package_root,
-        package_name,
-        edition,
-        warnings,
-    )?;
     if let Some(target) = to_lib_target(
+        original_toml.lib.as_ref(),
         resolved_toml.lib.as_ref(),
-        lib.as_ref(),
         package_root,
         edition,
         warnings,
     )? {
         targets.push(target);
-        has_lib = true;
-    } else {
-        has_lib = false;
     }
 
     let package = resolved_toml
@@ -71,52 +59,31 @@ pub(super) fn to_targets(
         .as_ref()
         .ok_or_else(|| anyhow::format_err!("manifest has no `package` (or `project`)"))?;
 
-    let bins = resolve_bins(
-        resolved_toml.bin.as_ref(),
-        package_root,
-        package_name,
-        edition,
-        package.autobins,
-        warnings,
-        has_lib,
-    )?;
     targets.extend(to_bin_targets(
         features,
-        &bins,
+        resolved_toml.bin.as_deref().unwrap_or_default(),
         package_root,
         edition,
         errors,
     )?);
 
-    let toml_examples = resolve_examples(
+    targets.extend(to_example_targets(
-        resolved_toml.example.as_ref(),
+        resolved_toml.example.as_deref().unwrap_or_default(),
         package_root,
         edition,
-        package.autoexamples,
+    )?);
-        warnings,
-        errors,
-    )?;
-    targets.extend(to_example_targets(&toml_examples, package_root, edition)?);
 
-    let toml_tests = resolve_tests(
+    targets.extend(to_test_targets(
-        resolved_toml.test.as_ref(),
+        resolved_toml.test.as_deref().unwrap_or_default(),
         package_root,
         edition,
-        package.autotests,
+    )?);
-        warnings,
-        errors,
-    )?;
-    targets.extend(to_test_targets(&toml_tests, package_root, edition)?);
 
-    let toml_benches = resolve_benches(
+    targets.extend(to_bench_targets(
-        resolved_toml.bench.as_ref(),
+        resolved_toml.bench.as_deref().unwrap_or_default(),
         package_root,
         edition,
-        package.autobenches,
+    )?);
-        warnings,
-        errors,
-    )?;
-    targets.extend(to_bench_targets(&toml_benches, package_root, edition)?);
 
     // processing the custom build script
     if let Some(custom_build) = package.resolved_build().expect("should be resolved") {
@@ -158,7 +125,7 @@ pub(super) fn to_targets(
     Ok(targets)
 }
 
-fn resolve_lib(
+pub fn resolve_lib(
     original_lib: Option<&TomlLibTarget>,
     package_root: &Path,
     package_name: &str,
@@ -283,7 +250,7 @@ fn to_lib_target(
     Ok(Some(target))
 }
 
-fn resolve_bins(
+pub fn resolve_bins(
     toml_bins: Option<&Vec<TomlBinTarget>>,
     package_root: &Path,
     package_name: &str,
@@ -409,7 +376,7 @@ fn legacy_bin_path(package_root: &Path, name: &str, has_lib: bool) -> Option<Pat
     None
 }
 
-fn resolve_examples(
+pub fn resolve_examples(
     toml_examples: Option<&Vec<TomlExampleTarget>>,
     package_root: &Path,
     edition: Edition,
@@ -464,7 +431,7 @@ fn to_example_targets(
     Ok(result)
 }
 
-fn resolve_tests(
+pub fn resolve_tests(
     toml_tests: Option<&Vec<TomlTestTarget>>,
     package_root: &Path,
     edition: Edition,
@@ -512,7 +479,7 @@ fn to_test_targets(
     Ok(result)
 }
 
-fn resolve_benches(
+pub fn resolve_benches(
     toml_benches: Option<&Vec<TomlBenchTarget>>,
     package_root: &Path,
     edition: Edition,

tests/testsuite/artifact_dep.rs

@@ -2215,6 +2215,10 @@ name = "foo"
 version = "0.1.0"
 authors = []
 build = false
+autobins = false
+autoexamples = false
+autotests = false
+autobenches = false
 description = "foo"
 homepage = "foo"
 documentation = "foo"
@@ -2223,6 +2227,10 @@ license = "MIT"
 repository = "foo"
 resolver = "2"
 
+[lib]
+name = "foo"
+path = "src/lib.rs"
+
 [dependencies.bar]
 version = "1.0"
 artifact = ["bin"]

tests/testsuite/features2.rs

@@ -1704,11 +1704,19 @@ name = "a"
 version = "0.1.0"
 authors = ["Zzz"]
 build = false
+autobins = false
+autoexamples = false
+autotests = false
+autobenches = false
 description = "foo"
 homepage = "https://example.com/"
 readme = false
 license = "MIT"
 resolver = "2"
+
+[lib]
+name = "a"
+path = "src/lib.rs"
 "#,
         cargo::core::manifest::MANIFEST_PREAMBLE
     );

tests/testsuite/features_namespaced.rs

@@ -986,11 +986,19 @@ edition = "2015"
 name = "foo"
 version = "0.1.0"
 build = false
+autobins = false
+autoexamples = false
+autotests = false
+autobenches = false
 description = "foo"
 homepage = "https://example.com/"
 readme = false
 license = "MIT"
 
+[lib]
+name = "foo"
+path = "src/lib.rs"
+
 [dependencies.opt-dep1]
 version = "1.0"
 optional = true
@@ -1106,11 +1114,19 @@ edition = "2015"
 name = "foo"
 version = "0.1.0"
 build = false
+autobins = false
+autoexamples = false
+autotests = false
+autobenches = false
 description = "foo"
 homepage = "https://example.com/"
 readme = false
 license = "MIT"
 
+[lib]
+name = "foo"
+path = "src/lib.rs"
+
 [dependencies.bar]
 version = "1.0"
 optional = true

tests/testsuite/inheritable_workspace_fields.rs

@@ -225,6 +225,10 @@ include = [
     "Cargo.toml",
 ]
 publish = true
+autobins = false
+autoexamples = false
+autotests = false
+autobenches = false
 description = "This is a crate"
 homepage = "https://www.rust-lang.org"
 documentation = "https://www.rust-lang.org/learn"
@@ -233,6 +237,10 @@ keywords = ["cli"]
 categories = ["development-tools"]
 license = "MIT"
 repository = "https://github.com/example/example"
+
+[[bin]]
+name = "foo"
+path = "src/main.rs"
 "#,
                 cargo::core::manifest::MANIFEST_PREAMBLE
             ),
@@ -386,8 +394,16 @@ name = "bar"
 version = "0.2.0"
 authors = []
 build = false
+autobins = false
+autoexamples = false
+autotests = false
+autobenches = false
 readme = false
 
+[[bin]]
+name = "bar"
+path = "src/main.rs"
+
 [dependencies.dep]
 version = "0.1"
 
@@ -519,8 +535,16 @@ name = "bar"
 version = "0.2.0"
 authors = []
 build = false
+autobins = false
+autoexamples = false
+autotests = false
+autobenches = false
 readme = false
 
+[[bin]]
+name = "bar"
+path = "src/main.rs"
+
 [dependencies.dep]
 version = "0.1.2"
 features = ["testing"]
@@ -771,6 +795,10 @@ include = [
     "README.md",
 ]
 publish = true
+autobins = false
+autoexamples = false
+autotests = false
+autobenches = false
 description = "This is a crate"
 homepage = "https://www.rust-lang.org"
 documentation = "https://www.rust-lang.org/learn"
@@ -780,6 +808,10 @@ categories = ["development-tools"]
 license = "MIT"
 license-file = "LICENSE"
 repository = "https://github.com/example/example"
+
+[[bin]]
+name = "bar"
+path = "src/main.rs"
 "#,
                 cargo::core::manifest::MANIFEST_PREAMBLE
             ),
@@ -935,8 +967,16 @@ name = "bar"
 version = "0.2.0"
 authors = []
 build = false
+autobins = false
+autoexamples = false
+autotests = false
+autobenches = false
 readme = false
 
+[[bin]]
+name = "bar"
+path = "src/main.rs"
+
 [dependencies.dep]
 version = "0.1"
 

tests/testsuite/package.rs

@@ -1219,6 +1219,10 @@ version = "0.0.1"
 authors = []
 build = false
 exclude = ["*.txt"]
+autobins = false
+autoexamples = false
+autotests = false
+autobenches = false
 description = "foo"
 readme = false
 license = "MIT"
@@ -1226,6 +1230,10 @@ license = "MIT"
 [package.metadata]
 foo = "bar"
 
+[[bin]]
+name = "foo"
+path = "src/main.rs"
+
 [dependencies.abc]
 version = "1.0"
 
@@ -1296,7 +1304,15 @@ name = "bar"
 version = "0.1.0"
 authors = []
 build = false
+autobins = false
+autoexamples = false
+autotests = false
+autobenches = false
 readme = false
+
+[lib]
+name = "bar"
+path = "src/lib.rs"
 "#,
         cargo::core::manifest::MANIFEST_PREAMBLE
     );
@@ -1365,8 +1381,16 @@ edition = "2015"
 name = "foo"
 version = "0.0.1"
 build = false
+autobins = false
+autoexamples = false
+autotests = false
+autobenches = false
 readme = false
 
+[[bin]]
+name = "foo"
+path = "src/main.rs"
+
 [dependencies.bar]
 version = "1.0.0"
 
@@ -1385,8 +1409,16 @@ edition = "2015"
 name = "foo"
 version = "0.0.1"
 build = false
+autobins = false
+autoexamples = false
+autotests = false
+autobenches = false
 readme = false
 
+[[bin]]
+name = "foo"
+path = "src/main.rs"
+
 [dependencies.bar]
 version = "1.0.0"
 public = true
@@ -2864,8 +2896,16 @@ edition = "2021"
 name = "bar"
 version = "0.1.0"
 build = false
+autobins = false
+autoexamples = false
+autotests = false
+autobenches = false
 readme = false
 resolver = "1"
+
+[lib]
+name = "bar"
+path = "src/lib.rs"
 "#,
         cargo::core::manifest::MANIFEST_PREAMBLE
     );
@@ -2885,7 +2925,15 @@ edition = "2015"
 name = "baz"
 version = "0.1.0"
 build = false
+autobins = false
+autoexamples = false
+autotests = false
+autobenches = false
 readme = false
+
+[lib]
+name = "baz"
+path = "src/lib.rs"
 "#,
         cargo::core::manifest::MANIFEST_PREAMBLE
     );
@@ -2949,10 +2997,18 @@ version = "0.0.1"
 authors = []
 build = false
 exclude = ["*.txt"]
+autobins = false
+autoexamples = false
+autotests = false
+autobenches = false
 description = "foo"
 homepage = "https://example.com/"
 readme = false
 license = "MIT"
+
+[[bin]]
+name = "foo"
+path = "src/main.rs"
 "#,
         cargo::core::manifest::MANIFEST_PREAMBLE
     );
@@ -3045,10 +3101,18 @@ name = "foo"
 version = "0.0.1"
 authors = []
 build = false
+autobins = false
+autoexamples = false
+autotests = false
+autobenches = false
 description = "foo"
 documentation = "https://example.com/"
 readme = false
 license = "MIT"
+
+[[bin]]
+name = "foo"
+path = "src/main.rs"
 "#,
         cargo::core::manifest::MANIFEST_PREAMBLE
     );
@@ -3154,10 +3218,18 @@ name = "foo"
 version = "0.0.1"
 authors = []
 build = false
+autobins = false
+autoexamples = false
+autotests = false
+autobenches = false
 description = "foo"
 homepage = "https://example.com/"
 readme = false
 license = "MIT"
+
+[[bin]]
+name = "foo"
+path = "src/main.rs"
 "#,
         cargo::core::manifest::MANIFEST_PREAMBLE
     );
@@ -3277,6 +3349,10 @@ fn normalize_case() {
 See [..]
 [PACKAGING] foo v0.0.1 ([CWD])
 [WARNING] ignoring `package.build` as `build.rs` is not included in the published package
+[WARNING] ignoring binary `foo` as `src/main.rs` is not included in the published package
+[WARNING] ignoring example `ExampleFoo` as `examples/ExampleFoo.rs` is not included in the published package
+[WARNING] ignoring test `explicitpath` as `tests/explicitpath.rs` is not included in the published package
+[WARNING] ignoring test `ExplicitPath` as `tests/ExplicitPath.rs` is not included in the published package
 [VERIFYING] foo v0.0.1 ([CWD])
 [COMPILING] foo v0.0.1 ([CWD][..])
 [FINISHED] `dev` profile [unoptimized + debuginfo] target(s) in [..]
@@ -3306,6 +3382,10 @@ src/lib.rs
 See [..]
 [PACKAGING] foo v0.0.1 ([CWD])
 [WARNING] ignoring `package.build` as `build.rs` is not included in the published package
+[WARNING] ignoring binary `foo` as `src/main.rs` is not included in the published package
+[WARNING] ignoring example `ExampleFoo` as `examples/ExampleFoo.rs` is not included in the published package
+[WARNING] ignoring test `explicitpath` as `tests/explicitpath.rs` is not included in the published package
+[WARNING] ignoring test `ExplicitPath` as `tests/ExplicitPath.rs` is not included in the published package
 [VERIFYING] foo v0.0.1 ([CWD])
 [COMPILING] foo v0.0.1 ([CWD][..])
 [FINISHED] `dev` profile [unoptimized + debuginfo] target(s) in [..]
@@ -3339,13 +3419,17 @@ version = "0.0.1"
 authors = []
 build = false
 exclude = ["*.txt"]
+autobins = false
+autoexamples = false
+autotests = false
+autobenches = false
 description = "foo"
 readme = false
 license = "MIT"
 
-[[test]]
+[lib]
-name = "explicitpath"
+name = "foo"
-path = "tests/explicitpath.rs"
+path = "src/lib.rs"
 "#,
                 cargo::core::manifest::MANIFEST_PREAMBLE
             ),
@@ -3750,12 +3834,17 @@ name = "foo"
 version = "0.0.1"
 authors = []
 build = "src/build.rs"
+autobins = false
+autoexamples = false
+autotests = false
+autobenches = false
 description = "foo"
 documentation = "docs.rs/foo"
 readme = "docs/README.md"
 license-file = "docs/LICENSE"
 
 [lib]
+name = "foo"
 path = "src/lib.rs"
 
 [[bin]]
@@ -3840,10 +3929,18 @@ include = [
     "src/lib.rs",
     "build.rs",
 ]
+autobins = false
+autoexamples = false
+autotests = false
+autobenches = false
 description = "foo"
 documentation = "docs.rs/foo"
 readme = false
 license = "MIT"
+
+[lib]
+name = "foo"
+path = "src/lib.rs"
 "#,
         )],
     );
@@ -3909,10 +4006,18 @@ version = "0.0.1"
 authors = []
 build = false
 include = ["src/lib.rs"]
+autobins = false
+autoexamples = false
+autotests = false
+autobenches = false
 description = "foo"
 documentation = "docs.rs/foo"
 readme = false
 license = "MIT"
+
+[lib]
+name = "foo"
+path = "src/lib.rs"
 "#,
         )],
     );
@@ -3981,10 +4086,18 @@ include = [
     "src/lib.rs",
     "build.rs",
 ]
+autobins = false
+autoexamples = false
+autotests = false
+autobenches = false
 description = "foo"
 documentation = "docs.rs/foo"
 readme = false
 license = "MIT"
+
+[lib]
+name = "foo"
+path = "src/lib.rs"
 "#,
         )],
     );
@@ -4051,10 +4164,18 @@ version = "0.0.1"
 authors = []
 build = false
 include = ["src/lib.rs"]
+autobins = false
+autoexamples = false
+autotests = false
+autobenches = false
 description = "foo"
 documentation = "docs.rs/foo"
 readme = false
 license = "MIT"
+
+[lib]
+name = "foo"
+path = "src/lib.rs"
 "#,
         )],
     );
@@ -4128,10 +4249,22 @@ include = [
     "src/main.rs",
     "src/lib.rs",
 ]
+autobins = false
+autoexamples = false
+autotests = false
+autobenches = false
 description = "foo"
 documentation = "docs.rs/foo"
 readme = false
 license = "MIT"
+
+[lib]
+name = "foo"
+path = "src/lib.rs"
+
+[[bin]]
+name = "foo"
+path = "src/main.rs"
 "#,
         )],
     );
@@ -4163,6 +4296,7 @@ fn discovery_inferred_lib_excluded() {
         .with_stderr(
             "\
 [PACKAGING] foo v0.0.1 ([CWD])
+[WARNING] ignoring library `foo` as `src/lib.rs` is not included in the published package
 [VERIFYING] foo v0.0.1 ([CWD])
 [COMPILING] foo v0.0.1 ([CWD][..])
 [FINISHED] `dev` profile [unoptimized + debuginfo] target(s) in [..]
@@ -4196,10 +4330,18 @@ version = "0.0.1"
 authors = []
 build = false
 include = ["src/main.rs"]
+autobins = false
+autoexamples = false
+autotests = false
+autobenches = false
 description = "foo"
 documentation = "docs.rs/foo"
 readme = false
 license = "MIT"
+
+[[bin]]
+name = "foo"
+path = "src/main.rs"
 "#,
         )],
     );
@@ -4276,13 +4418,22 @@ include = [
     "src/main.rs",
     "src/lib.rs",
 ]
+autobins = false
+autoexamples = false
+autotests = false
+autobenches = false
 description = "foo"
 documentation = "docs.rs/foo"
 readme = false
 license = "MIT"
 
 [lib]
+name = "foo"
 path = "src/lib.rs"
+
+[[bin]]
+name = "foo"
+path = "src/main.rs"
 "#,
         )],
     );
@@ -4313,20 +4464,59 @@ fn discovery_explicit_lib_excluded() {
         .build();
 
     p.cargo("package")
-        .with_status(101)
         .with_stdout("")
         .with_stderr(
             "\
 [PACKAGING] foo v0.0.1 ([CWD])
+[WARNING] ignoring library `foo` as `src/lib.rs` is not included in the published package
 [VERIFYING] foo v0.0.1 ([CWD])
 [COMPILING] foo v0.0.1 ([CWD][..])
-[ERROR] couldn't read src/lib.rs: [..]
+[FINISHED] `dev` profile [unoptimized + debuginfo] target(s) in [..]
-
+[PACKAGED] 4 files, [..] ([..] compressed)
-[ERROR] could not compile `foo` (lib) due to 1 previous error
-[ERROR] failed to verify package tarball
 ",
         )
         .run();
+
+    let f = File::open(&p.root().join("target/package/foo-0.0.1.crate")).unwrap();
+    validate_crate_contents(
+        f,
+        "foo-0.0.1.crate",
+        &["Cargo.lock", "Cargo.toml", "Cargo.toml.orig", "src/main.rs"],
+        &[(
+            "Cargo.toml",
+            r#"# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
+#
+# When uploading crates to the registry Cargo will automatically
+# "normalize" Cargo.toml files for maximal compatibility
+# with all versions of Cargo and also rewrite `path` dependencies
+# to registry (e.g., crates.io) dependencies.
+#
+# If you are reading this file be aware that the original Cargo.toml
+# will likely look very different (and much more reasonable).
+# See Cargo.toml.orig for the original contents.
+
+[package]
+edition = "2015"
+name = "foo"
+version = "0.0.1"
+authors = []
+build = false
+include = ["src/main.rs"]
+autobins = false
+autoexamples = false
+autotests = false
+autobenches = false
+description = "foo"
+documentation = "docs.rs/foo"
+readme = false
+license = "MIT"
+
+[[bin]]
+name = "foo"
+path = "src/main.rs"
+"#,
+        )],
+    );
 }
 
 #[cargo_test]
@@ -4406,10 +4596,34 @@ include = [
     "tests/test_foo.rs",
     "benches/bench_foo.rs",
 ]
+autobins = false
+autoexamples = false
+autotests = false
+autobenches = false
 description = "foo"
 documentation = "docs.rs/foo"
 readme = false
 license = "MIT"
+
+[lib]
+name = "foo"
+path = "src/lib.rs"
+
+[[bin]]
+name = "foo"
+path = "src/bin/foo/main.rs"
+
+[[example]]
+name = "example_foo"
+path = "examples/example_foo.rs"
+
+[[test]]
+name = "test_foo"
+path = "tests/test_foo.rs"
+
+[[bench]]
+name = "bench_foo"
+path = "benches/bench_foo.rs"
 "#,
         )],
     );
@@ -4444,6 +4658,10 @@ fn discovery_inferred_other_excluded() {
         .with_stderr(
             "\
 [PACKAGING] foo v0.0.1 ([CWD])
+[WARNING] ignoring binary `foo` as `src/bin/foo/main.rs` is not included in the published package
+[WARNING] ignoring example `example_foo` as `examples/example_foo.rs` is not included in the published package
+[WARNING] ignoring test `test_foo` as `tests/test_foo.rs` is not included in the published package
+[WARNING] ignoring benchmark `bench_foo` as `benches/bench_foo.rs` is not included in the published package
 [VERIFYING] foo v0.0.1 ([CWD])
 [COMPILING] foo v0.0.1 ([CWD][..])
 [FINISHED] `dev` profile [unoptimized + debuginfo] target(s) in [..]
@@ -4477,10 +4695,18 @@ version = "0.0.1"
 authors = []
 build = false
 include = ["src/lib.rs"]
+autobins = false
+autoexamples = false
+autotests = false
+autobenches = false
 description = "foo"
 documentation = "docs.rs/foo"
 readme = false
 license = "MIT"
+
+[lib]
+name = "foo"
+path = "src/lib.rs"
 "#,
         )],
     );
@@ -4575,22 +4801,34 @@ include = [
     "tests/test_foo.rs",
     "benches/bench_foo.rs",
 ]
+autobins = false
+autoexamples = false
+autotests = false
+autobenches = false
 description = "foo"
 documentation = "docs.rs/foo"
 readme = false
 license = "MIT"
 
+[lib]
+name = "foo"
+path = "src/lib.rs"
+
 [[bin]]
 name = "foo"
+path = "src/bin/foo/main.rs"
 
 [[example]]
 name = "example_foo"
+path = "examples/example_foo.rs"
 
 [[test]]
 name = "test_foo"
+path = "tests/test_foo.rs"
 
 [[bench]]
 name = "bench_foo"
+path = "benches/bench_foo.rs"
 "#,
         )],
     );
@@ -4633,20 +4871,60 @@ fn discovery_explicit_other_excluded() {
         .build();
 
     p.cargo("package")
-        .with_status(101)
         .with_stdout("")
         .with_stderr(
             "\
 [PACKAGING] foo v0.0.1 ([CWD])
+[WARNING] ignoring binary `foo` as `src/bin/foo/main.rs` is not included in the published package
+[WARNING] ignoring example `example_foo` as `examples/example_foo.rs` is not included in the published package
+[WARNING] ignoring test `test_foo` as `tests/test_foo.rs` is not included in the published package
+[WARNING] ignoring benchmark `bench_foo` as `benches/bench_foo.rs` is not included in the published package
 [VERIFYING] foo v0.0.1 ([CWD])
-[ERROR] failed to verify package tarball
+[COMPILING] foo v0.0.1 ([CWD][..])
-
+[FINISHED] `dev` profile [unoptimized + debuginfo] target(s) in [..]
-Caused by:
+[PACKAGED] 4 files, [..] ([..] compressed)
-  failed to parse manifest at `[CWD]/target/package/foo-0.0.1/Cargo.toml`
-
-Caused by:
-  can't find `example_foo` example at `examples/example_foo.rs` or `examples/example_foo/main.rs`. Please specify example.path if you want to use a non-default path.
 ",
         )
         .run();
+
+    let f = File::open(&p.root().join("target/package/foo-0.0.1.crate")).unwrap();
+    validate_crate_contents(
+        f,
+        "foo-0.0.1.crate",
+        &["Cargo.lock", "Cargo.toml", "Cargo.toml.orig", "src/lib.rs"],
+        &[(
+            "Cargo.toml",
+            r#"# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
+#
+# When uploading crates to the registry Cargo will automatically
+# "normalize" Cargo.toml files for maximal compatibility
+# with all versions of Cargo and also rewrite `path` dependencies
+# to registry (e.g., crates.io) dependencies.
+#
+# If you are reading this file be aware that the original Cargo.toml
+# will likely look very different (and much more reasonable).
+# See Cargo.toml.orig for the original contents.
+
+[package]
+edition = "2015"
+name = "foo"
+version = "0.0.1"
+authors = []
+build = false
+include = ["src/lib.rs"]
+autobins = false
+autoexamples = false
+autotests = false
+autobenches = false
+description = "foo"
+documentation = "docs.rs/foo"
+readme = false
+license = "MIT"
+
+[lib]
+name = "foo"
+path = "src/lib.rs"
+"#,
+        )],
+    );
 }

tests/testsuite/publish.rs

@@ -1561,10 +1561,18 @@ You may press ctrl-c [..]
                      version = \"0.1.0\"\n\
                      authors = []\n\
                      build = false\n\
+                     autobins = false\n\
+                     autoexamples = false\n\
+                     autotests = false\n\
+                     autobenches = false\n\
                      description = \"foo\"\n\
                      readme = false\n\
                      license = \"MIT\"\n\
                      \n\
+                     [[bin]]\n\
+                     name = \"foo\"\n\
+                     path = \"src/main.rs\"\n\
+                     \n\
                      [dependencies.dep1]\n\
                      version = \"1.0\"\n\
                     ",
@@ -1675,6 +1683,10 @@ name = "foo"
 version = "0.1.0"
 authors = []
 build = false
+autobins = false
+autoexamples = false
+autotests = false
+autobenches = false
 description = "foo"
 homepage = "foo"
 documentation = "foo"
@@ -1682,6 +1694,10 @@ readme = false
 license = "MIT"
 repository = "foo"
 
+[lib]
+name = "foo"
+path = "src/lib.rs"
+
 [dev-dependencies]
 "#,
                 cargo::core::manifest::MANIFEST_PREAMBLE
@@ -1936,6 +1952,10 @@ name = "foo"
 version = "0.1.0"
 authors = []
 build = false
+autobins = false
+autoexamples = false
+autotests = false
+autobenches = false
 description = "foo"
 homepage = "foo"
 documentation = "foo"
@@ -1943,6 +1963,10 @@ readme = false
 license = "MIT"
 repository = "foo"
 
+[[bin]]
+name = "foo"
+path = "src/main.rs"
+
 [dependencies.normal-and-dev]
 version = "1.0"
 features = ["cat"]

tests/testsuite/weak_dep_features.rs

@@ -631,11 +631,19 @@ edition = "2015"
 name = "foo"
 version = "0.1.0"
 build = false
+autobins = false
+autoexamples = false
+autotests = false
+autobenches = false
 description = "foo"
 homepage = "https://example.com/"
 readme = false
 license = "MIT"
 
+[lib]
+name = "foo"
+path = "src/lib.rs"
+
 [dependencies.bar]
 version = "1.0"
 optional = true