Use clap's conflict support and keep some command tests

src/bin/cargo/commands/install.rs

@@ -85,10 +85,13 @@ pub fn cli() -> Command {
         )
         .arg_features()
         .arg_parallel()
-        .arg(flag(
-            "debug",
-            "Build in debug mode (with the 'dev' profile) instead of release mode",
-        ))
+        .arg(
+            flag(
+                "debug",
+                "Build in debug mode (with the 'dev' profile) instead of release mode",
+            )
+            .conflicts_with("profile"),
+        )
         .arg_redundant_default_mode("release", "install", "debug")
         .arg_profile("Install artifacts with the specified profile")
         .arg_target_triple("Build for the target triple")

src/cargo/util/command_prelude.rs

@@ -131,7 +131,12 @@ pub trait CommandExt: Sized {
     ) -> Self {
         let msg = format!("`--{default_mode}` is the default for `cargo {command}`; instead `--{supported_mode}` is supported");
         let value_parser = UnknownArgumentValueParser::suggest(msg);
-        self._arg(flag(default_mode, "").value_parser(value_parser).hide(true))
+        self._arg(
+            flag(default_mode, "")
+                .conflicts_with("profile")
+                .value_parser(value_parser)
+                .hide(true),
+        )
     }
 
     fn arg_targets_all(
@@ -226,6 +231,7 @@ pub trait CommandExt: Sized {
         self._arg(
             flag("release", release)
                 .short('r')
+                .conflicts_with("profile")
                 .help_heading(heading::COMPILATION_OPTIONS),
         )
     }
@@ -563,24 +569,13 @@ Run `{cmd}` to see possible targets."
     ) -> CargoResult<InternedString> {
         let specified_profile = self._value_of("profile");
 
-        let err_message = |flag: &str| {
-            format!(
-                "\
-the `--{flag}` flag can not be specified with the `--profile` flag
-Please remove one of the flags."
-            )
-        };
-
         // Check for allowed legacy names.
         // This is an early exit, since it allows combination with `--release`.
         match (specified_profile, profile_checking) {
             // `cargo rustc` has legacy handling of these names
             (Some(name @ ("dev" | "test" | "bench" | "check")), ProfileChecking::LegacyRustc)
             // `cargo fix` and `cargo check` has legacy handling of this profile name
             | (Some(name @ "test"), ProfileChecking::LegacyTestOnly) => {
-                if self.maybe_flag("release") {
-                    bail!(err_message("release"));
-                }
                 return Ok(InternedString::new(name));
             }
             _ => {}
@@ -593,9 +588,7 @@ Please remove one of the flags."
         ) {
             (false, false, None) => default,
             (true, _, None) => "release",
-            (true, _, Some(_)) => bail!(err_message("release")),
             (_, true, None) => "dev",
-            (_, true, Some(_)) => bail!(err_message("debug")),
             // `doc` is separate from all the other reservations because
             // [profile.doc] was historically allowed, but is deprecated and
             // has no effect. To avoid potentially breaking projects, it is a

tests/testsuite/check.rs

@@ -289,20 +289,26 @@ fn rustc_check() {
 
     // Verify compatible usage of --profile with --release, issue #7488
     foo.cargo("rustc --profile check --release -- --emit=metadata")
-        .with_status(101)
+        .with_status(1)
         .with_stderr(
             "\
-error: the `--release` flag can not be specified with the `--profile` flag
-Please remove one of the flags.",
+[ERROR] the argument '--profile <PROFILE-NAME>' cannot be used with '--release'
+
+Usage: cargo[EXE] rustc --profile <PROFILE-NAME> [ARGS]...
+
+For more information, try '--help'.",
         )
         .run();
 
     foo.cargo("rustc --profile test --release -- --emit=metadata")
-        .with_status(101)
+        .with_status(1)
         .with_stderr(
             "\
-error: the `--release` flag can not be specified with the `--profile` flag
-Please remove one of the flags.",
+[ERROR] the argument '--profile <PROFILE-NAME>' cannot be used with '--release'
+
+Usage: cargo[EXE] rustc --profile <PROFILE-NAME> [ARGS]...
+
+For more information, try '--help'.",
         )
         .run();
 }

tests/testsuite/profile_custom.rs

@@ -380,85 +380,38 @@ fn conflicting_usage() {
         .build();
 
     p.cargo("build --profile=dev --release")
-        .with_status(101)
+        .with_status(1)
         .with_stderr(
             "\
-error: the `--release` flag can not be specified with the `--profile` flag
-Please remove one of the flags.",
-        )
-        .run();
+[ERROR] the argument '--profile <PROFILE-NAME>' cannot be used with '--release'
 
-    p.cargo("install --profile=release --debug")
-        .with_status(101)
-        .with_stderr(
-            "\
-error: the `--debug` flag can not be specified with the `--profile` flag
-Please remove one of the flags.",
-        )
-        .run();
+Usage: cargo[EXE] build --profile <PROFILE-NAME>
 
-    p.cargo("rustc --profile=dev --release")
-        .with_status(101)
-        .with_stderr(
-            "\
-error: the `--release` flag can not be specified with the `--profile` flag
-Please remove one of the flags.
-",
+For more information, try '--help'.",
         )
         .run();
 
-    p.cargo("check --profile=dev --release")
-        .with_status(101)
+    p.cargo("install --profile=release --debug")
+        .with_status(1)
         .with_stderr(
             "\
-error: the `--release` flag can not be specified with the `--profile` flag
-Please remove one of the flags.",
-        )
-        .run();
+[ERROR] the argument '--profile <PROFILE-NAME>' cannot be used with '--debug'
 
-    p.cargo("check --profile=test --release")
-        .with_status(101)
-        .with_stderr(
-            "\
-error: the `--release` flag can not be specified with the `--profile` flag
-Please remove one of the flags.",
-        )
-        .run();
+Usage: cargo[EXE] install --profile <PROFILE-NAME> [CRATE[@<VER>]]...
 
-    // This is OK since the two are the same.
-    p.cargo("rustc --profile=release --release")
-        .with_status(101)
-        .with_stderr(
-            "\
-error: the `--release` flag can not be specified with the `--profile` flag
-Please remove one of the flags.",
+For more information, try '--help'.",
         )
         .run();
 
-    p.cargo("build --profile=release --release")
-        .with_status(101)
+    p.cargo("check --profile=dev --release")
+        .with_status(1)
         .with_stderr(
             "\
-error: the `--release` flag can not be specified with the `--profile` flag
-Please remove one of the flags.",
-        )
-        .run();
+[ERROR] the argument '--profile <PROFILE-NAME>' cannot be used with '--release'
 
-    p.cargo("install --path . --profile=dev --debug")
-        .with_status(101)
-        .with_stderr(
-            "\
-error: the `--debug` flag can not be specified with the `--profile` flag
-Please remove one of the flags.",
-        )
-        .run();
+Usage: cargo[EXE] check --profile <PROFILE-NAME>
 
-    p.cargo("install --path . --profile=release --debug")
-        .with_status(101)
-        .with_stderr(
-            "\
-error: the `--debug` flag can not be specified with the `--profile` flag
-Please remove one of the flags.",
+For more information, try '--help'.",
         )
         .run();
 }