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-rw-r--r--src/bootstrap/src/core/build_steps/toolstate.rs4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/bootstrap/src/core/build_steps/toolstate.rs b/src/bootstrap/src/core/build_steps/toolstate.rs
index deb782cad0c..6065aa1414f 100644
--- a/src/bootstrap/src/core/build_steps/toolstate.rs
+++ b/src/bootstrap/src/core/build_steps/toolstate.rs
@@ -1,3 +1,7 @@
+//! Toolstate checks to keep tools building
+//!
+//! Reachable via `./x.py test` but mostly relevant for CI, since it isn't run locally by default.
+
 use crate::core::builder::{Builder, RunConfig, ShouldRun, Step};
 use crate::utils::helpers::t;
 use serde_derive::{Deserialize, Serialize};