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Diffstat (limited to 'crates/project-model/src/toolchain_info/rustc_cfg.rs')
-rw-r--r--crates/project-model/src/toolchain_info/rustc_cfg.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/crates/project-model/src/toolchain_info/rustc_cfg.rs b/crates/project-model/src/toolchain_info/rustc_cfg.rs
index afcc812079..4bf9b59e7d 100644
--- a/crates/project-model/src/toolchain_info/rustc_cfg.rs
+++ b/crates/project-model/src/toolchain_info/rustc_cfg.rs
@@ -66,7 +66,7 @@ fn rustc_print_cfg(
QueryConfig::Cargo(sysroot, cargo_toml) => {
let mut cmd = sysroot.tool(Tool::Cargo, cargo_toml.parent());
cmd.envs(extra_env);
- cmd.args(["rustc"]).args(RUSTC_ARGS);
+ cmd.args(["rustc", "-Z", "unstable-options"]).args(RUSTC_ARGS);
if let Some(target) = target {
cmd.args(["--target", target]);
}