Error message displayed when i 'wasm-pack build'

i am so sorry,i really dont know about rust,can you give specific detailed solution about https://github.com/paritytech/stateless-blockchain

thank you very much! i really dont know how to write,actually i just want to run this code and then see the effect.if you can help me solve this problem i will be very thank you!!please!!

or you can tell me what specific code information should be added to the Cargo.toml. thank you very much!

another error displayed when i execute ‘cargo update’

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