Pin idna_adapter to fix MSRV

Author: tnull

ci/ci-tests.sh

@@ -73,6 +73,10 @@ cargo test -p lightning-block-sync --verbose --color always --features rpc-clien
 cargo check -p lightning-block-sync --verbose --color always --features rpc-client,rest-client,tokio
 
 if [[ "$HOST_PLATFORM" != *windows* ]]; then
+	# url 2.5.3 switched to idna 1.0.3 and ICU4X, which requires rustc 1.67 or newer.
+	# Here we opt to keep using unicode-rs by pinning idna_adapter as described here: https://docs.rs/crate/idna_adapter/1.2.0
+	[ "$RUSTC_MINOR_VERSION" -lt 67 ] && cargo update -p idna_adapter --precise "1.1.0" --verbose
+
 	echo -e "\n\nChecking Transaction Sync Clients with features."
 	cargo check -p lightning-transaction-sync --verbose --color always --features esplora-blocking
 	cargo check -p lightning-transaction-sync --verbose --color always --features esplora-async