CI failures for darwin

[cryptonemo]

Description

I've been seeing this intermittently in proofs CI and it should be resolved.

     Running `/Users/distiller/crate/target/release/deps/storage_proofs_porep-3eae6b0d3e017065 --nocapture`

running 14 tests
test stacked::vanilla::challenges::test::test_calculate_fixed_challenges ... ok
thread 'stacked::vanilla::cores::tests::test_cores' panicked at 'attempt to calculate the remainder with a divisor of zero', storage-proofs-porep/src/stacked/vanilla/cores.rs:149:19
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
test stacked::vanilla::cores::tests::test_cores ... FAILED
thread 'stacked::vanilla::create_label::multi::tests::test_create_labels' panicked at 'poisoned lock: "PoisonError { inner: .. }"', storage-proofs-porep/src/stacked/vanilla/cores.rs:126:32
test stacked::vanilla::create_label::multi::tests::test_create_labels ... FAILED
test stacked::vanilla::cache::tests::test_read_full_range ... ok
[storage-proofs-porep/src/stacked/vanilla/graph.rs:552] &porep_id = [
    3,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
]
[storage-proofs-porep/src/stacked/vanilla/graph.rs:552] &nodes = 1073741824
[storage-proofs-porep/src/stacked/vanilla/graph.rs:552] &expect_pathological = true
test stacked::vanilla::cache::tests::test_read_partial_range ... ok
test stacked::vanilla::graph::tests::test_high_parent_bits ... ok
[storage-proofs-porep/src/stacked/vanilla/graph.rs:552] &porep_id = [
    4,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
]
[storage-proofs-porep/src/stacked/vanilla/graph.rs:552] &nodes = 2147483648
[storage-proofs-porep/src/stacked/vanilla/graph.rs:552] &expect_pathological = true
test stacked::vanilla::graph::tests::test_shuffle ... ok
[storage-proofs-porep/src/stacked/vanilla/graph.rs:552] &porep_id = [
    8,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
]
[storage-proofs-porep/src/stacked/vanilla/graph.rs:552] &nodes = 1073741824
[storage-proofs-porep/src/stacked/vanilla/graph.rs:552] &expect_pathological = false
[storage-proofs-porep/src/stacked/vanilla/graph.rs:552] &porep_id = [
    9,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
]
[storage-proofs-porep/src/stacked/vanilla/graph.rs:552] &nodes = 2147483648
[storage-proofs-porep/src/stacked/vanilla/graph.rs:552] &expect_pathological = false
test stacked::vanilla::graph::tests::test_graph_distribution_pathology ... ok
test stacked::circuit::hash::tests::test_hash2_circuit ... ok
test stacked::vanilla::challenges::test::challenge_partition_equivalence ... ok
test stacked::vanilla::graph::tests::test_exp_parent_histogram ... ok
test stacked::circuit::hash::tests::test_hash_single_column_circuit ... ok
test stacked::vanilla::challenges::test::challenge_derivation ... ok
test stacked::circuit::create_label::tests::test_create_label ... ok

failures:

failures:
    stacked::vanilla::cores::tests::test_cores
    stacked::vanilla::create_label::multi::tests::test_create_labels

test result: FAILED. 12 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 5.70s

error: test failed, to rerun pass '-p storage-proofs-porep --lib'

Exited with code exit status 101

CircleCI received exit code 101

Acceptance criteria

CI tests always pass.

Risks + pitfalls

This may be a real bug, but most likely just related to the CI darwin resources.

Where to begin

The provided log.

[cryptonemo]

Resolved with #1454