test(publish): Make package_selection tests consistent

Author: epage

tests/testsuite/publish.rs

@@ -3492,25 +3492,25 @@ fn package_selection() {
         .file("b/src/lib.rs", "#[test] fn b() {}")
         .build();
 
-    p.cargo("publish --no-verify --dry-run --package a --package b")
+    p.cargo("publish --no-verify --dry-run --workspace")
         .replace_crates_io(registry.index_url())
         .with_status(101)
         .with_stderr_data(str![[r#"
-[ERROR] the `--package (multiple occurrences)` flag is unstable, and only available on the nightly channel of Cargo, but this is the `stable` channel
+[ERROR] the `--workspace` flag is unstable, and only available on the nightly channel of Cargo, but this is the `stable` channel
 See https://doc.rust-lang.org/book/appendix-07-nightly-rust.html for more information about Rust release channels.
-See https://github.com/rust-lang/cargo/issues/10948 for more information about the `--package (multiple occurrences)` flag.
+See https://github.com/rust-lang/cargo/issues/10948 for more information about the `--workspace` flag.
 
 "#]])
         .with_stdout_data(str![[r#""#]])
         .run();
 
-    p.cargo("publish --no-verify --dry-run --workspace")
+    p.cargo("publish --no-verify --dry-run --package a --package b")
         .replace_crates_io(registry.index_url())
         .with_status(101)
         .with_stderr_data(str![[r#"
-[ERROR] the `--workspace` flag is unstable, and only available on the nightly channel of Cargo, but this is the `stable` channel
+[ERROR] the `--package (multiple occurrences)` flag is unstable, and only available on the nightly channel of Cargo, but this is the `stable` channel
 See https://doc.rust-lang.org/book/appendix-07-nightly-rust.html for more information about Rust release channels.
-See https://github.com/rust-lang/cargo/issues/10948 for more information about the `--workspace` flag.
+See https://github.com/rust-lang/cargo/issues/10948 for more information about the `--package (multiple occurrences)` flag.
 
 "#]])
         .with_stdout_data(str![[r#""#]])