cli: Update examples to use new `fail` decorator

radicle-cli-test/src/lib.rs

@@ -8,9 +8,6 @@ use snapbox::cmd::{Command, OutputAssert};
 use snapbox::{Assert, Substitutions};
 use thiserror::Error;
 
-/// Error lines in the CLI are prefixed with this string.
-const ERROR_PREFIX: &str = "✗";
-
 #[derive(Error, Debug)]
 pub enum Error {
     #[error("parsing failed")]
@@ -160,9 +157,6 @@ impl TestFormula {
                         },
                     });
                 } else if let Some(a) = test.assertions.last_mut() {
-                    if line.starts_with(ERROR_PREFIX) {
-                        a.exit = ExitStatus::Failure;
-                    }
                     a.expected.push_str(line.as_str());
                     a.expected.push('\n');
                 } else {

radicle-cli/examples/rad-clone-unknown.md

@@ -1,6 +1,6 @@
 Trying to clone a repository that is not in our routing table returns an error:
 
-```
+``` (fail)
 $ rad clone rad:zVNuptPuk5XauitpCWSNVCXGGfXW
 ✓ Tracking relationship established for rad:zVNuptPuk5XauitpCWSNVCXGGfXW
 ✗ Clone failed: no seeds found for rad:zVNuptPuk5XauitpCWSNVCXGGfXW

radicle-cli/examples/rad-id-rebase.md

@@ -237,7 +237,7 @@ Note that a warning was emitted:
 
 If we attempt to commit this revision, the command will fail:
 
-```
+``` (fail)
 $ rad id commit 3f6ae4f8645c8b0cbcd35ea924df7b13aca52774 --no-confirm
 ! Warning: Revision is out of date
 ! Warning: d96f425412c9f8ad5d9a9a05c9831d0728e2338d =/= 475cdfbc8662853dd132ec564e4f5eb0f152dd7f

radicle-cli/examples/rad-inspect-noauth.md

@@ -1,6 +1,6 @@
 The `rad inspect` command can be run without being authenticated with radicle:
 
-```
+``` (fail)
 $ rad self
 ✗ Self failed: Could not load radicle profile
 ✗ Hint: To setup your radicle profile, run `rad auth`.

radicle-cli/examples/rad-rm.md

@@ -23,7 +23,7 @@ $ rad ls
 
 Attempting to remove a repository that doesn't exist gives us an error message:
 
-```
+``` (fail)
 $ rad rm rad:z2Jk1mNqyX7AjT4K83jJW9vQoHn4f
 ✗ Remove failed: repository rad:z2Jk1mNqyX7AjT4K83jJW9vQoHn4f was not found
 ```

radicle-cli/examples/rad-sync.md

@@ -18,7 +18,7 @@ $ rad sync
 If we try to sync again after the nodes have synced, we will get a timeout
 after one second, since the nodes will not emit any message:
 
-```
+``` (fail)
 $ rad sync --timeout 1
 ✗ Syncing with 2 node(s)..
 ! Seed z6Mkt67GdsW7715MEfRuP4pSZxJRJh6kj6Y48WRqVv4N1tRk timed out..