slightly reworded message to show the main parts first

Co-authored-by: Ed Page <[email protected]>

Author: Cerber-Ursi

src/cargo/core/workspace.rs

@@ -724,8 +724,8 @@ impl<'gctx> Workspace<'gctx> {
                         continue;
                     }
                     bail!(
-                        "package `{}` is listed in default-members\n\
-                        for workspace at {} but is not a member.",
+                        "package `{}` is listed in default-members but is not a member\n\
+                        for workspace at {}.",
                         path.display(),
                         root_manifest_path.display()
                     )

tests/testsuite/workspaces.rs

@@ -911,8 +911,8 @@ fn virtual_default_member_is_not_a_member() {
         .with_status(101)
         .with_stderr(
             "\
-error: package `[..]something-else` is listed in default-members\n\
-for workspace at [..]Cargo.toml but is not a member.
+error: package `[..]something-else` is listed in default-members but is not a member\n\
+for workspace at [..]Cargo.toml.
 ",
         )
         .run();
@@ -1673,8 +1673,8 @@ fn excluded_default_members_still_must_be_members() {
         .with_status(101)
         .with_stderr(
             "\
-error: package `[..]bar` is listed in default-members\n\
-for workspace at [..]foo/Cargo.toml but is not a member.
+error: package `[..]bar` is listed in default-members but is not a member\n\
+for workspace at [..]foo/Cargo.toml.
 ",
         )
         .run();