Only try to build `lightning-transaction-sync` if we meet its MSRV

This should fix CI

diff --git a/ci/ci-tests.sh b/ci/ci-tests.sh
index 89e3a32190548ea9976bf8a30e1b1483c4d1a45f..7a16b749200de77219c7268eb79fe793fe0d1bfb 100755 (executable)
--- a/ci/ci-tests.sh
+++ b/ci/ci-tests.sh
@@ -77,7 +77,12 @@ popd
 echo -e "\n\nTesting no-std build on a downstream no-std crate"
 # check no-std compatibility across dependencies
 pushd no-std-check
-cargo check --verbose --color always --features lightning-transaction-sync
+if [[ $RUSTC_MINOR_VERSION -gt 67 ]]; then
+       # lightning-transaction-sync's MSRV is 1.67
+       cargo check --verbose --color always --features lightning-transaction-sync
+else
+       cargo check --verbose --color always
+fi
 popd
 
 # Test that we can build downstream code with only the "release pins".