Add exercise lints

fix typo

Cargo.toml

@@ -69,6 +69,18 @@ panic = "abort"
 [package.metadata.release]
 pre-release-hook = ["./release-hook.sh"]
 
+[workspace.lints.rust]
+unsafe_code = "forbid"
+unstable_features = "forbid"
+
+[workspace.lints.clippy]
+empty_loop = "forbid"
+infinite_loop = "deny"
+mem_forget = "deny"
+dbg_macro = "warn"
+todo = "warn"
 # TODO: Remove after the following fix is released: https://github.com/rust-lang/rust-clippy/pull/13102
-[lints.clippy]
 needless_option_as_deref = "allow"
+
+[lints]
+workspace = true

dev/Cargo.toml

@@ -201,3 +201,19 @@ panic = "abort"
 
 [profile.dev]
 panic = "abort"
+
+[lints.rust]
+# You shouldn't write unsafe code in Rustlings
+unsafe_code = "forbid"
+# You don't need unstable features in Rustlings and shouldn't rely on them while learning Rust
+unstable_features = "forbid"
+
+[lints.clippy]
+# You forgot a `todo!()`
+todo = "forbid"
+# This can only happen by mistake in Rustlings
+empty_loop = "forbid"
+# No infinite loops are needed in Rustlings
+infinite_loop = "deny"
+# You shouldn't leak memory while still learning Rust
+mem_forget = "deny"

rustlings-macros/Cargo.toml

@@ -19,3 +19,6 @@ proc-macro = true
 quote = "1.0.36"
 serde.workspace = true
 toml_edit.workspace = true
+
+[lints]
+workspace = true

solutions/11_hashmaps/hashmaps3.rs

@@ -35,7 +35,7 @@ fn build_scores_table(results: &str) -> HashMap<&str, TeamScores> {
         team_1.goals_scored += team_1_score;
         team_1.goals_conceded += team_2_score;
 
-        // Similarely for the second team.
+        // Similarly for the second team.
         let team_2 = scores
             .entry(team_2_name)
             .or_insert_with(TeamScores::default);