[We patched `copyto!`](https://github.com/kul-forbes/StructuredOptimization.jl/commit/8f60110b337dbe6823218ab70230cbdee61280dd#diff-fc2490a424cdd3cd55e7649235e65169R38) should be removed when [RecursiveArrayTools issue is fixed](https://github.com/JuliaDiffEq/RecursiveArrayTools.jl/issues/68).