add workspace root path to error messages on members collecting

Author: Cerber-Ursi

src/cargo/core/workspace.rs

@@ -697,8 +697,10 @@ impl<'gctx> Workspace<'gctx> {
             self.find_path_deps(&path.join("Cargo.toml"), &root_manifest_path, false)
                 .with_context(|| {
                     format!(
-                        "failed to load manifest for workspace member `{}`",
-                        path.display()
+                        "failed to load manifest for workspace member `{}`\n\
+                        referenced by workspace at `{}`",
+                        path.display(),
+                        root_manifest_path.display()
                     )
                 })?;
         }
@@ -722,9 +724,10 @@ impl<'gctx> Workspace<'gctx> {
                         continue;
                     }
                     bail!(
-                        "package `{}` is listed in workspace’s default-members \
-                         but is not a member.",
-                        path.display()
+                        "package `{}` is listed in default-members\n\
+                        for workspace at {} but is not a member.",
+                        path.display(),
+                        root_manifest_path.display()
                     )
                 }
                 self.default_members.push(manifest_path)

tests/testsuite/workspaces.rs

@@ -438,6 +438,7 @@ fn invalid_members() {
         .with_stderr(
             "\
 [ERROR] failed to load manifest for workspace member `[..]/foo`
+referenced by workspace at `[..]/foo/Cargo.toml`
 
 Caused by:
   failed to read `[..]foo/foo/Cargo.toml`
@@ -910,8 +911,8 @@ fn virtual_default_member_is_not_a_member() {
         .with_status(101)
         .with_stderr(
             "\
-error: package `[..]something-else` is listed in workspace’s default-members \
-but is not a member.
+error: package `[..]something-else` is listed in default-members\n\
+for workspace at [..]Cargo.toml but is not a member.
 ",
         )
         .run();
@@ -1672,8 +1673,8 @@ fn excluded_default_members_still_must_be_members() {
         .with_status(101)
         .with_stderr(
             "\
-error: package `[..]bar` is listed in workspace’s default-members \
-but is not a member.
+error: package `[..]bar` is listed in default-members\n\
+for workspace at [..]foo/Cargo.toml but is not a member.
 ",
         )
         .run();
@@ -1902,6 +1903,7 @@ fn glob_syntax_invalid_members() {
         .with_stderr(
             "\
 [ERROR] failed to load manifest for workspace member `[..]/crates/bar`
+referenced by workspace at `[..]/Cargo.toml`
 
 Caused by:
   failed to read `[..]foo/crates/bar/Cargo.toml`
@@ -2388,6 +2390,7 @@ fn member_dep_missing() {
         .with_stderr(
             "\
 [ERROR] failed to load manifest for workspace member `[..]/bar`
+referenced by workspace at `[..]/Cargo.toml`
 
 Caused by:
   failed to load manifest for dependency `baz`