Lock deps of RTIM

Author: tesuji

setup-toolchain.sh

@@ -8,6 +8,7 @@ if ! command -v rustup-toolchain-install-master > /dev/null; then
     --git https://github.com/kennytm/rustup-toolchain-install-master \
     --rev ffed76e7075b0d5c404ef23ebb7bcc402c9f57ea \
     --bin rustup-toolchain-install-master \
+    --locked \
     --debug
 fi