X-Git-Url: https://git.lizzy.rs/?a=blobdiff_plain;f=src%2Fbootstrap%2Fcheck.rs;h=229851238f1d0817064a6b0bd283b0c93e2f5d5f;hb=40c1410ce48d06ce8ee4efe1ce8c7b933259d849;hp=5c085bedf0eef31917d486b437e4c45816e980cd;hpb=95a992a68694d8bf3959bd2c0ac27ce9e9208b59;p=rust.git

diff --git a/src/bootstrap/check.rs b/src/bootstrap/check.rs
index 5c085bedf0e..229851238f1 100644
--- a/src/bootstrap/check.rs
+++ b/src/bootstrap/check.rs
@@ -456,6 +456,8 @@ fn stamp(
 // behavior, treat it as in-tree so that any new warnings in clippy will be
 // rejected.
 tool_check_step!(Clippy, "src/tools/clippy", SourceType::InTree);
+// Miri on the other hand is treated as out of tree, since InTree also causes it to
+// be run as part of `check`, which can fail on platforms which libffi-sys has no support for.
 tool_check_step!(Miri, "src/tools/miri", SourceType::Submodule);
 tool_check_step!(Rls, "src/tools/rls", SourceType::InTree);
 tool_check_step!(Rustfmt, "src/tools/rustfmt", SourceType::InTree);