fix(resolve): Don't list transitive, incompatible dependencies as available

This is part of #13908

Author: epage

src/cargo/ops/cargo_update.rs

@@ -795,29 +795,27 @@ fn report_latest(possibilities: &[IndexSummary], change: &PackageChange) -> Opti
         return Some(report);
     }
 
-    let incompat_ver_compat_msrv_summary = possibilities
-        .iter()
-        .map(|s| s.as_summary())
-        .filter(|s| {
-            if let (Some(summary_rust_version), Some(required_rust_version)) =
-                (s.rust_version(), required_rust_version)
-            {
-                summary_rust_version.is_compatible_with(required_rust_version)
-            } else {
-                true
-            }
-        })
-        .filter(|s| is_latest(s.version(), package_id.version()))
-        .max_by_key(|s| s.version());
-    if let Some(summary) = incompat_ver_compat_msrv_summary {
-        let warn = if change.is_transitive.unwrap_or(true) {
-            Default::default()
-        } else {
-            style::WARN
-        };
-        let version = summary.version();
-        let report = format!(" {warn}(available: v{version}){warn:#}");
-        return Some(report);
+    if !change.is_transitive.unwrap_or(true) {
+        let incompat_ver_compat_msrv_summary = possibilities
+            .iter()
+            .map(|s| s.as_summary())
+            .filter(|s| {
+                if let (Some(summary_rust_version), Some(required_rust_version)) =
+                    (s.rust_version(), required_rust_version)
+                {
+                    summary_rust_version.is_compatible_with(required_rust_version)
+                } else {
+                    true
+                }
+            })
+            .filter(|s| is_latest(s.version(), package_id.version()))
+            .max_by_key(|s| s.version());
+        if let Some(summary) = incompat_ver_compat_msrv_summary {
+            let warn = style::WARN;
+            let version = summary.version();
+            let report = format!(" {warn}(available: v{version}){warn:#}");
+            return Some(report);
+        }
     }
 
     let compat_ver_summary = possibilities
@@ -836,20 +834,22 @@ fn report_latest(possibilities: &[IndexSummary], change: &PackageChange) -> Opti
         return Some(report);
     }
 
-    let incompat_ver_summary = possibilities
-        .iter()
-        .map(|s| s.as_summary())
-        .filter(|s| is_latest(s.version(), package_id.version()))
-        .max_by_key(|s| s.version());
-    if let Some(summary) = incompat_ver_summary {
-        let msrv_note = summary
-            .rust_version()
-            .map(|rv| format!(", requires Rust {rv}"))
-            .unwrap_or_default();
-        let warn = style::NOP;
-        let version = summary.version();
-        let report = format!(" {warn}(available: v{version}{msrv_note}){warn:#}");
-        return Some(report);
+    if !change.is_transitive.unwrap_or(true) {
+        let incompat_ver_summary = possibilities
+            .iter()
+            .map(|s| s.as_summary())
+            .filter(|s| is_latest(s.version(), package_id.version()))
+            .max_by_key(|s| s.version());
+        if let Some(summary) = incompat_ver_summary {
+            let msrv_note = summary
+                .rust_version()
+                .map(|rv| format!(", requires Rust {rv}"))
+                .unwrap_or_default();
+            let warn = style::NOP;
+            let version = summary.version();
+            let report = format!(" {warn}(available: v{version}{msrv_note}){warn:#}");
+            return Some(report);
+        }
     }
 
     None

tests/testsuite/paths.rs

@@ -60,7 +60,6 @@ fn broken_path_override_warns() {
         .with_stderr_data(str![[r#"
 [UPDATING] `dummy-registry` index
 [LOCKING] 2 packages to latest compatible versions
-[ADDING] bar v0.1.0 (available: v0.2.0)
 [WARNING] path override for crate `a` has altered the original list of
 dependencies; the dependency on `bar` was either added or
 modified to not match the previously resolved version

tests/testsuite/update.rs

@@ -406,7 +406,6 @@ fn update_precise() {
         .with_stderr_data(str![[r#"
 [UPDATING] `dummy-registry` index
 [DOWNGRADING] serde v0.2.1 -> v0.2.0
-[NOTE] pass `--verbose` to see 1 unchanged dependencies behind latest
 
 "#]])
         .run();
@@ -2183,7 +2182,7 @@ fn update_breaking_specific_packages_that_wont_update() {
 [UPDATING] non-semver v1.0.0 -> v1.0.1 (available: v2.0.0)
 [UPDATING] renamed-from v1.0.0 -> v1.0.1 (available: v2.0.0)
 [UPDATING] transitive-compatible v1.0.0 -> v1.0.1
-[UPDATING] transitive-incompatible v1.0.0 -> v1.0.1 (available: v2.0.0)
+[UPDATING] transitive-incompatible v1.0.0 -> v1.0.1
 
 "#]])
     .run();
@@ -2397,7 +2396,7 @@ fn update_breaking_spec_version_transitive() {
         .with_stderr_data(str![[r#"
 [UPDATING] `[..]` index
 [LOCKING] 1 package to latest compatible version
-[UPDATING] dep v1.1.0 -> v1.1.1 (available: v2.0.0)
+[UPDATING] dep v1.1.0 -> v1.1.1
 
 "#]])
         .run();