DefId(0:3 ~ thir_tree[8f1d]::main):
Thir {
    arms: [],
    blocks: [
        Block {
            targeted_by_break: false,
            region_scope: Node(1),
            opt_destruction_scope: None,
            span: $DIR/thir-tree.rs:4:15: 4:17 (#0),
            stmts: [],
            expr: None,
            safety_mode: Safe,
        },
    ],
    exprs: [
        Expr {
            ty: (),
            temp_lifetime: Some(
                Node(2),
            ),
            span: $DIR/thir-tree.rs:4:15: 4:17 (#0),
            kind: Block {
                block: b0,
            },
        },
        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[8f1d]::main).2),
                ),
                value: e0,
            },
        },
        Expr {
            ty: (),
            temp_lifetime: Some(
                Node(2),
            ),
            span: $DIR/thir-tree.rs:4:15: 4:17 (#0),
            kind: Scope {
                region_scope: Destruction(2),
                lint_level: Inherited,
                value: e1,
            },
        },
    ],
    stmts: [],
    params: [],
}