Negative coverage: borrow_check_expr_has_ty / block / premise prove_assignable(env, assumptions, state, ty_expr, ty) => state
Premise at line 333. Observed failure causes: failed_judgment.
block| Line | Coverage | Source |
|---|---|---|
| 332 | 19 | (borrow_check_expr(env, assumptions, state, expr, places_live_on_exit) => (ty_expr, state)) |
| 333 | 4 | (prove_assignable(env, assumptions, state, ty_expr, ty) => state) |
| ──────── ("block") | ||
| 335 | 57 | (borrow_check_expr_has_ty(env, assumptions, state, expr, ty, places_live_on_exit) => state) |
4 tests failed proving this premise:
Source location: tests/borrowck.rs:2881
fn foo<'a, 'b>(a: &'a u32) -> &'b u32 {
let r: &'b u32 = identity::<&'b u32>(a);
return r;
}Failed proof tree
check_all_crates failedmod.rs:41rule "check all prefixes"mod.rs:53check_crate failedmod.rs:60rule "check crate"mod.rs:73check_crate_item failedmod.rs:163rule "free fn"mod.rs:191check_free_fn failedfns.rs:14rule "check free fn"fns.rs:24check_fn failedfns.rs:31rule "check fn"fns.rs:55check_fn_body failedfns.rs:62rule "expr fn body"fns.rs:90borrow_check failednll.rs:126rule "borrow_check"nll.rs:137borrow_check_block failednll.rs:144rule "basic block"nll.rs:159borrow_check_statement failednll.rs:176rule "let"nll.rs:193borrow_check_expr_has_ty failednll.rs:319rule "block"nll.rs:332borrow_check_expr failednll.rs:340rule "call"nll.rs:411borrow_check_expr_has_ty failednll.rs:319rule "block"nll.rs:333prove_assignable failednll.rs:937rule "subtype"nll.rs:955verify_universal_outlives failedoutlives.rs:8rule "verify_universal_outlives"outlives.rs:20only_assumed_outlives failedoutlives.rs:27rule "universal lifetime"outlives.rs:49can_outlive failedoutlives.rs:56rule "universal target"outlives.rs:81prove failedoutlives.rs:81ruleoutlives.rs:81prove_wc_list failedprove_wc_list.rs:11rule "some"prove_wc_list.rs:29prove_wc failedprove_wc.rs:23rule "outlives"prove_wc.rs:154prove_outlives failedprove_outlives.rs:8
rule "block"nll.rs:333prove_assignable failednll.rs:937rule "subtype"nll.rs:955verify_universal_outlives failedoutlives.rs:8rule "verify_universal_outlives"outlives.rs:20only_assumed_outlives failedoutlives.rs:27rule "universal lifetime"outlives.rs:49can_outlive failedoutlives.rs:56rule "universal target"outlives.rs:81prove failedoutlives.rs:81ruleoutlives.rs:81prove_wc_list failedprove_wc_list.rs:11rule "some"prove_wc_list.rs:29prove_wc failedprove_wc.rs:23rule "outlives"prove_wc.rs:154prove_outlives failedprove_outlives.rs:8
Source location: tests/mir_typeck.rs:300
fn bar(v1: ()) -> () {
let v0: () = foo(v1);
return v0;
}Failed proof tree
check_all_crates failedmod.rs:41rule "check all prefixes"mod.rs:53check_crate failedmod.rs:60rule "check crate"mod.rs:73check_crate_item failedmod.rs:163rule "free fn"mod.rs:191check_free_fn failedfns.rs:14rule "check free fn"fns.rs:24check_fn failedfns.rs:31rule "check fn"fns.rs:55check_fn_body failedfns.rs:62rule "expr fn body"fns.rs:90borrow_check failednll.rs:126rule "borrow_check"nll.rs:137borrow_check_block failednll.rs:144rule "basic block"nll.rs:159borrow_check_statement failednll.rs:176rule "let"nll.rs:193borrow_check_expr_has_ty failednll.rs:319rule "block"nll.rs:332borrow_check_expr failednll.rs:340rule "call"nll.rs:411borrow_check_expr_has_ty failednll.rs:319rule "block"nll.rs:333prove_assignable failednll.rs:937rule "subtype"nll.rs:955prove failedfunction.rs:250rulefunction.rs:250prove_wc_list failedprove_wc_list.rs:11rule "some"prove_wc_list.rs:29prove_wc failedprove_wc.rs:23rule "subtype"prove_wc.rs:133prove_sub failedprove_sub.rs:13rule "normalize-l"prove_sub.rs:28prove_normalize failedprove_normalize.rs:19
rule "normalize-r"prove_sub.rs:35prove_normalize failedprove_normalize.rs:19
rule "block"nll.rs:333prove_assignable failednll.rs:937rule "subtype"nll.rs:955prove failedfunction.rs:250rulefunction.rs:250prove_wc_list failedprove_wc_list.rs:11rule "some"prove_wc_list.rs:29prove_wc failedprove_wc.rs:23rule "subtype"prove_wc.rs:133prove_sub failedprove_sub.rs:13rule "normalize-l"prove_sub.rs:28prove_normalize failedprove_normalize.rs:19
rule "normalize-r"prove_sub.rs:35prove_normalize failedprove_normalize.rs:19
Source location: tests/mir_typeck.rs:360
fn bar(v1: u32) -> u32 {
let v0: u32 = identity::<bool>(v1);
return v0;
}Failed proof tree
check_all_crates failedmod.rs:41rule "check all prefixes"mod.rs:53check_crate failedmod.rs:60rule "check crate"mod.rs:73check_crate_item failedmod.rs:163rule "free fn"mod.rs:191check_free_fn failedfns.rs:14rule "check free fn"fns.rs:24check_fn failedfns.rs:31rule "check fn"fns.rs:55check_fn_body failedfns.rs:62rule "expr fn body"fns.rs:90borrow_check failednll.rs:126rule "borrow_check"nll.rs:137borrow_check_block failednll.rs:144rule "basic block"nll.rs:159borrow_check_statement failednll.rs:176rule "let"nll.rs:193borrow_check_expr_has_ty failednll.rs:319rule "block"nll.rs:332borrow_check_expr failednll.rs:340rule "call"nll.rs:411borrow_check_expr_has_ty failednll.rs:319rule "block"nll.rs:333prove_assignable failednll.rs:937rule "subtype"nll.rs:955prove failedfunction.rs:250rulefunction.rs:250prove_wc_list failedprove_wc_list.rs:11rule "some"prove_wc_list.rs:29prove_wc failedprove_wc.rs:23rule "subtype"prove_wc.rs:133prove_sub failedprove_sub.rs:13rule "normalize-l"prove_sub.rs:28prove_normalize failedprove_normalize.rs:19
rule "normalize-r"prove_sub.rs:35prove_normalize failedprove_normalize.rs:19
rule "block"nll.rs:333prove_assignable failednll.rs:937rule "subtype"nll.rs:955prove failedfunction.rs:250rulefunction.rs:250prove_wc_list failedprove_wc_list.rs:11rule "some"prove_wc_list.rs:29prove_wc failedprove_wc.rs:23rule "subtype"prove_wc.rs:133prove_sub failedprove_sub.rs:13rule "normalize-l"prove_sub.rs:28prove_normalize failedprove_normalize.rs:19
rule "normalize-r"prove_sub.rs:35prove_normalize failedprove_normalize.rs:19
Source location: tests/mir_typeck.rs:630
fn foo (v1: u32) -> u32 {
let v2: Dummy = Dummy { value: false };
return v1;
}Failed proof tree
check_all_crates failedmod.rs:41rule "check all prefixes"mod.rs:53check_crate failedmod.rs:60rule "check crate"mod.rs:73check_crate_item failedmod.rs:163rule "free fn"mod.rs:191check_free_fn failedfns.rs:14rule "check free fn"fns.rs:24check_fn failedfns.rs:31rule "check fn"fns.rs:55check_fn_body failedfns.rs:62rule "expr fn body"fns.rs:90borrow_check failednll.rs:126rule "borrow_check"nll.rs:137borrow_check_block failednll.rs:144rule "basic block"nll.rs:159borrow_check_statement failednll.rs:176rule "let"nll.rs:193borrow_check_expr_has_ty failednll.rs:319rule "block"nll.rs:332borrow_check_expr failednll.rs:340rule "struct"nll.rs:524borrow_check_expr_has_ty failednll.rs:319rule "block"nll.rs:333prove_assignable failednll.rs:937rule "subtype"nll.rs:955prove failedfunction.rs:250rulefunction.rs:250prove_wc_list failedprove_wc_list.rs:11rule "some"prove_wc_list.rs:29prove_wc failedprove_wc.rs:23rule "subtype"prove_wc.rs:133prove_sub failedprove_sub.rs:13rule "normalize-l"prove_sub.rs:28prove_normalize failedprove_normalize.rs:19
rule "normalize-r"prove_sub.rs:35prove_normalize failedprove_normalize.rs:19