Negative coverage: prove_eq / rigid / premise prove(decls, env, assumptions, Wcs::all_eq(a_parameters, b_parameters)) => c
Premise at line 47. Observed failure causes: failed_judgment.
rigid| Line | Coverage | Source |
|---|---|---|
| 44 | N/A | (let RigidTy { name: a_name, parameters: a_parameters } = a) |
| 45 | N/A | (let RigidTy { name: b_name, parameters: b_parameters } = b) |
| 46 | ✗ | (if a_name == b_name) |
| 47 | 1 | (prove(decls, env, assumptions, Wcs::all_eq(a_parameters, b_parameters)) => c) |
| ──────── ("rigid") | ||
| 49 | 136 | (prove_eq(decls, env, assumptions, TyData::RigidTy(a), TyData::RigidTy(b)) => c) |
1 test failed proving this premise:
Source location: tests/drop.rs:154
#[test]
fn drop_impl_concrete_type_param() {
FormalityTest::new(crates![
crate Foo {
struct MyStruct<T> {
value: T,
}
impl Drop for MyStruct<u32> {}
}
])
.err(expect_test::expect![[r#"
crates/formality-rust/src/prove/prove_via.rs:8:1: no applicable rules for prove_via { goal: MyStruct<!ty_0> = MyStruct<u32>, via: Drop(MyStruct<!ty_0>), assumptions: {Drop(MyStruct<!ty_0>)}, env: Env { variables: [!ty_0], bias: Soundness, pending: [], allow_pending_outlives: false } }
crates/formality-rust/src/prove/prove_normalize.rs:56:1: no applicable rules for prove_normalize_via { goal: MyStruct<!ty_0>, via: Drop(MyStruct<!ty_0>), assumptions: {Drop(MyStruct<!ty_0>)}, env: Env { variables: [!ty_0], bias: Soundness, pending: [], allow_pending_outlives: false } }
crates/formality-rust/src/prove/prove_via.rs:8:1: no applicable rules for prove_via { goal: !ty_0 = u32, via: Drop(MyStruct<!ty_0>), assumptions: {Drop(MyStruct<!ty_0>)}, env: Env { variables: [!ty_0], bias: Soundness, pending: [], allow_pending_outlives: false } }
crates/formality-rust/src/prove/prove_normalize.rs:56:1: no applicable rules for prove_normalize_via { goal: !ty_0, via: Drop(MyStruct<!ty_0>), assumptions: {Drop(MyStruct<!ty_0>)}, env: Env { variables: [!ty_0], bias: Soundness, pending: [], allow_pending_outlives: false } }
crates/formality-rust/src/prove/prove_normalize.rs:56:1: no applicable rules for prove_normalize_via { goal: u32, via: Drop(MyStruct<!ty_0>), assumptions: {Drop(MyStruct<!ty_0>)}, env: Env { variables: [!ty_0], bias: Soundness, pending: [], allow_pending_outlives: false } }
crates/formality-rust/src/prove/prove_normalize.rs:56:1: no applicable rules for prove_normalize_via { goal: MyStruct<u32>, via: Drop(MyStruct<!ty_0>), assumptions: {Drop(MyStruct<!ty_0>)}, env: Env { variables: [!ty_0], bias: Soundness, pending: [], allow_pending_outlives: false } }
crates/formality-rust/src/prove/prove_via.rs:8:1: no applicable rules for prove_via { goal: u32 = !ty_0, via: Drop(MyStruct<!ty_0>), assumptions: {Drop(MyStruct<!ty_0>)}, env: Env { variables: [!ty_0], bias: Soundness, pending: [], allow_pending_outlives: false } }
crates/formality-rust/src/prove/prove_normalize.rs:56:1: no applicable rules for prove_normalize_via { goal: u32, via: Drop(MyStruct<!ty_0>), assumptions: {Drop(MyStruct<!ty_0>)}, env: Env { variables: [!ty_0], bias: Soundness, pending: [], allow_pending_outlives: false } }
crates/formality-rust/src/prove/prove_normalize.rs:56:1: no applicable rules for prove_normalize_via { goal: !ty_0, via: Drop(MyStruct<!ty_0>), assumptions: {Drop(MyStruct<!ty_0>)}, env: Env { variables: [!ty_0], bias: Soundness, pending: [], allow_pending_outlives: false } }
the rule "trait implied bound" at (prove_wc.rs) failed because
expression evaluated to an empty collection: `decls.trait_invariants()`"#]])
}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:73check_crate_item failedmod.rs:178rule "trait impl"mod.rs:194check_drop_impl_always_applicable failedimpls.rs:301rule "Drop impl is always applicable"impls.rs:331prove failedfunction.rs:250args
rulefunction.rs:250prove_wc_list failedprove_wc_list.rs:8args
rule "some"prove_wc_list.rs:26prove_wc failedprove_wc.rs:21args
rule "positive impl"prove_wc.rs:79prove failedprove_wc.rs:79args
ruleprove_wc.rs:79prove_wc_list failedprove_wc_list.rs:8args
rule "some"prove_wc_list.rs:26prove_wc failedprove_wc.rs:21args
rule "eq"prove_wc.rs:125prove_eq failedprove_eq.rs:23args
rule "rigid"prove_eq.rs:47prove failedprove_eq.rs:47args
ruleprove_eq.rs:47prove_wc_list failedprove_wc_list.rs:8args
rule "some"prove_wc_list.rs:26prove_wc failedprove_wc.rs:21args
rule "assumption - relation"prove_wc.rs:54prove_via failedprove_via.rs:8args
rule "eq"prove_wc.rs:125prove_eq failedprove_eq.rs:23args
rule "normalize-l"prove_eq.rs:68prove_normalize failedprove_normalize.rs:20args
rule "normalize-via-assumption"prove_normalize.rs:34prove_normalize_via failedprove_normalize.rs:56args
rule "symmetric"prove_eq.rs:38prove_eq failedprove_eq.rs:23args
rule "normalize-l"prove_eq.rs:68prove_normalize failedprove_normalize.rs:20args
rule "normalize-via-assumption"prove_normalize.rs:34prove_normalize_via failedprove_normalize.rs:56args
rule "symmetric"prove_eq.rs:38prove_eq failedprove_eq.rs:23args
rule "rigid"prove_eq.rs:47prove failedprove_eq.rs:47args
ruleprove_eq.rs:47prove_wc_list failedprove_wc_list.rs:8args
rule "some"prove_wc_list.rs:26prove_wc failedprove_wc.rs:21args
rule "assumption - relation"prove_wc.rs:54prove_via failedprove_via.rs:8args
rule "eq"prove_wc.rs:125prove_eq failedprove_eq.rs:23args
rule "normalize-l"prove_eq.rs:68prove_normalize failedprove_normalize.rs:20args
rule "normalize-via-assumption"prove_normalize.rs:34prove_normalize_via failedprove_normalize.rs:56args
rule "symmetric"prove_eq.rs:38prove_eq failedprove_eq.rs:23args
rule "normalize-l"prove_eq.rs:68prove_normalize failedprove_normalize.rs:20args
rule "normalize-via-assumption"prove_normalize.rs:34prove_normalize_via failedprove_normalize.rs:56args