DefId(0:3 ~ thir_tree[7aaa]::main):
params: [
]
body:
    Expr {
        ty: ()
        temp_lifetime: Some(Node(2))
        span: $DIR/thir-tree.rs:4:15: 4:17 (#0)
        kind: 
            Scope {
                region_scope: Node(2)
                lint_level: Explicit(HirId(DefId(0:3 ~ thir_tree[7aaa]::main).2))
                value:
                    Expr {
                        ty: ()
                        temp_lifetime: Some(Node(2))
                        span: $DIR/thir-tree.rs:4:15: 4:17 (#0)
                        kind: 
                            Block {
                                targeted_by_break: false
                                span: $DIR/thir-tree.rs:4:15: 4:17 (#0)
                                region_scope: Node(1)
                                safety_mode: Safe
                                stmts: []
                                expr: []
                            }
                    }
            }
    }