Test u32_not_u32_impls
Source location: tests/coherence_overlap.rs:218
#[test]
fn u32_not_u32_impls() {
FormalityTest::new(crates![crate core {
trait Foo {}
impl Foo for u32 {}
impl !Foo for u32 {}
}]).err(expect_test::expect![[r#"
failed at (proven_set.rs) because
found an unconditionally true solution Constraints { env: Env { variables: [], bias: Completeness, pending: [], allow_pending_outlives: false }, known_true: true, substitution: {} }"#]])
}Rules proved (0)
This test records no positive coverage.
Premises failed (4)
The last column links to the premise’s page when the judgment view counts this failure against that premise. It does not when the premise is read as infallible, or when the failure was blamed inside a multi-line premise that carries no record on its own first line.
| Judgment | Rule | Premise | All tests of this premise |
|---|---|---|---|
| check_trait_impl | check_trait_impl | scope(enter_universally(Env::default(), binder) … (line 23, blamed at line 28) | not counted by the judgment view |
| check_all_crates | check all prefixes | for_all(i in 0..crates.len()) (let program = cra… (line 52, blamed at line 54) | not counted by the judgment view |
| check_crate | check crate | for_all(item in &c.items) (check_crate_item(prog… (line 73, blamed at line 74) | not counted by the judgment view |
| check_crate_item | trait impl | check_trait_impl(program, v, crate_id) => () (line 194) | 16 tests |
Proof trees
Failed proof tree
check_all_crates failedmod.rs:42args
rule "check all prefixes"mod.rs:54check_crate failedmod.rs:61args
rule "check crate"mod.rs:74check_crate_item failedmod.rs:179args
rule "trait impl"mod.rs:194check_trait_impl failedimpls.rs:14args
rule "check_trait_impl"impls.rs:28negation_via_failure failednegation.rs:41ruleproven_set.rs:59 (failed: inapplicable)