What are the problems that are mitigated by not allowing nested function declarations in Go?

What are the problems that are mitigated by not allowing nested function declarations in Go?

function go declaration

go

Go: Declare both a new variable and overwrite a variable from a higher scope, how?

go scope declaration

go

"variable declared and not used" compilation error

variables go compiler-errors declaration

go

GO explicit array initialization

arrays go initialization variable-assignment declaration

go

Go function definition in another package

function go declaration

go

Difference between "variable declaration" and "short variable declaration" at local scope in Go

go variable-assignment declaration

go