Test T_and_Local_Bar_T
Source location: tests/coherence_overlap.rs:278
#[test]
fn T_and_Local_Bar_T() {
FormalityTest::new(crates![crate core {
trait Foo { }
trait Bar<U> { }
impl<T> Foo for T { }
impl<T> Foo for T where LocalType: Bar<T> { }
struct LocalType { }
}])
.err(expect_test::expect![[r#"
the rule "check_coherence" at (coherence.rs) failed because
impls may overlap:
impl <ty> Foo for ^ty0_0 { }
impl <ty> Foo for ^ty0_0 where LocalType : Bar <^ty0_0> { }"#]])
}
Rules proved (0)
This test records no positive coverage.
Premises failed (3)
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_coherence | check_coherence | for_all(impl_a in current_crate_impls) (for_all(… (line 17, blamed at line 19) | not counted by the judgment view |
| check_all_crates | check all prefixes | for_all(i in 0..crates.len()) (let program = cra… (line 51, blamed at line 53) | not counted by the judgment view |
| check_crate | check crate | check_coherence(program, c) => () (line 74) | 12 tests |
Proof trees
Failed proof tree
check_all_crates failedmod.rs:41args
rule "check all prefixes"mod.rs:53check_crate failedmod.rs:60args
rule "check crate"mod.rs:74check_coherence failedcoherence.rs:8args
rule "check_coherence"coherence.rs:19 (failed: inapplicable)