+grep '^max_level_' Cargo.toml | awk '{ print $1 }'| while read -r FEATURE; do
+ cargo check --verbose --color always --features "$FEATURE"
+done
+popd
+
+echo -e "\n\nTesting no-std flags in various combinations"
+for DIR in lightning lightning-invoice lightning-rapid-gossip-sync; do
+ [ "$RUSTC_MINOR_VERSION" -gt 50 ] && cargo test -p $DIR --verbose --color always --no-default-features --features no-std
+ # check if there is a conflict between no-std and the default std feature
+ [ "$RUSTC_MINOR_VERSION" -gt 50 ] && cargo test -p $DIR --verbose --color always --features no-std
+done
+for DIR in lightning lightning-invoice lightning-rapid-gossip-sync; do
+ # check if there is a conflict between no-std and the c_bindings cfg
+ [ "$RUSTC_MINOR_VERSION" -gt 50 ] && RUSTFLAGS="--cfg=c_bindings" cargo test -p $DIR --verbose --color always --no-default-features --features=no-std
+done
+RUSTFLAGS="--cfg=c_bindings" cargo test --verbose --color always
+
+# Note that outbound_commitment_test only runs in this mode because of hardcoded signature values
+pushd lightning
+cargo test --verbose --color always --no-default-features --features=std,_test_vectors
+popd
+# This one only works for lightning-invoice
+pushd lightning-invoice
+# check that compile with no-std and serde works in lightning-invoice
+cargo test --verbose --color always --no-default-features --features no-std --features serde
+popd
+
+echo -e "\n\nTesting no-std build on a downstream no-std crate"
+# check no-std compatibility across dependencies
+pushd no-std-check
+if [[ $RUSTC_MINOR_VERSION -gt 67 ]]; then
+ # lightning-transaction-sync's MSRV is 1.67
+ cargo check --verbose --color always --features lightning-transaction-sync
+else
+ # The memchr crate switched to an MSRV of 1.60 starting with v2.6.0
+ # This is currently only a release dependency via core2, which we intend to work with
+ # rust-bitcoin to remove soon.
+ [ "$RUSTC_MINOR_VERSION" -lt 60 ] && cargo update -p memchr --precise "2.5.0" --verbose
+ cargo check --verbose --color always
+fi
+[ "$CI_MINIMIZE_DISK_USAGE" != "" ] && cargo clean
+popd
+
+# Test that we can build downstream code with only the "release pins".
+pushd msrv-no-dev-deps-check
+PIN_RELEASE_DEPS
+cargo check
+[ "$CI_MINIMIZE_DISK_USAGE" != "" ] && cargo clean
+popd
+
+if [ -f "$(which arm-none-eabi-gcc)" ]; then
+ pushd no-std-check
+ cargo build --target=thumbv7m-none-eabi
+ [ "$CI_MINIMIZE_DISK_USAGE" != "" ] && cargo clean
+ popd
+fi
+