bad chain spec parsing

[xlc]

using master ba8f89b

$ cargo run --bin polkadot-parachain -- --tmp --chain parachains/chain-specs/statemint.json
⚡ Found 3 strongly connected components which includes at least one cycle each
cycle(001) ∈ α: ApprovalVoting ~~{"DisputeCoordinatorMessage"}~~> DisputeCoordinator ~~{"ApprovalVotingMessage"}~~>  *
cycle(002) ∈ β: CandidateBacking ~~{"ProvisionerMessage"}~~> Provisioner ~~{"CandidateBackingMessage"}~~>  *
cycle(003) ∈ γ: NetworkBridgeRx ~~{"GossipSupportMessage"}~~> GossipSupport ~~{"NetworkBridgeRxMessage"}~~>  *
    Finished dev [unoptimized + debuginfo] target(s) in 0.63s
warning: the following packages contain code that will be rejected by a future version of Rust: fs_extra v1.2.0
note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
     Running `target/debug/polkadot-parachain --tmp --chain parachains/chain-specs/statemint.json`
Error: Input("Error parsing spec file: unknown protocol string:  at line 31 column 3")

$ cargo run --bin polkadot-parachain -- --tmp --chain statemint                            
⚡ Found 3 strongly connected components which includes at least one cycle each
cycle(001) ∈ α: ApprovalVoting ~~{"DisputeCoordinatorMessage"}~~> DisputeCoordinator ~~{"ApprovalVotingMessage"}~~>  *
cycle(002) ∈ β: CandidateBacking ~~{"ProvisionerMessage"}~~> Provisioner ~~{"CandidateBackingMessage"}~~>  *
cycle(003) ∈ γ: NetworkBridgeRx ~~{"GossipSupportMessage"}~~> GossipSupport ~~{"NetworkBridgeRxMessage"}~~>  *
    Finished dev [unoptimized + debuginfo] target(s) in 0.62s
warning: the following packages contain code that will be rejected by a future version of Rust: fs_extra v1.2.0
note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
     Running `target/debug/polkadot-parachain --tmp --chain statemint`
Error: Input("Error parsing spec file: unknown protocol string:  at line 31 column 3")

tried on 0.9.42 branch and that's working