panicked at 'called `Option::unwrap() during tests

[quentinlesceller]

Rigs with CUDA installed and NVIDIA GPUs so I guess cargo test --all should pass.
However seems like there an unwrap on a None value and mine_cuckaroo_cuda_29/mine_cuckatoo_lean_cuda_19 tests never stop. Not sure if the first is related to the second.

quentin@quentin-rig:~/grin-miner$ cargo test --all
    Finished dev [unoptimized + debuginfo] target(s) in 0.11s
     Running target/debug/deps/cuckoo_miner-9a5e3b31612b198e

running 2 tests
test miner::consensus::tests::proof_difficulty ... ok
test miner::consensus::tests::proof_hash ... ok

test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out

     Running target/debug/deps/miner-6f2e3bc6a6612052

running 11 tests
test mine_cuckaroo_mean_cpu_compat_19 ... ignored
test mine_cuckatoo_lean_compat_cpu_31 ... ignored
thread '<unnamed>' panicked at 'called `Option::unwrap()` on a `None` value', src/libcore/option.rs:345:21
stack backtrace:
   0:     0x556fdbd4ef93 - std::sys::unix::backtrace::tracing::imp::unwind_backtrace::h50ebfb8734a81144
                               at src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:39
   1:     0x556fdbd4a8ab - std::sys_common::backtrace::_print::hc7fdae4fb6b58d2d
                               at src/libstd/sys_common/backtrace.rs:71
   2:     0x556fdbd4dcd6 - std::panicking::default_hook::{{closure}}::hc55d0892611a29ff
                               at src/libstd/sys_common/backtrace.rs:59
                               at src/libstd/panicking.rs:197
   3:     0x556fdbd4da69 - std::panicking::default_hook::h3c8a3df5d3469668
                               at src/libstd/panicking.rs:211
   4:     0x556fdbd4e3df - std::panicking::rust_panic_with_hook::h24c9a1c35b1f49cc
                               at src/libstd/panicking.rs:474
   5:     0x556fdbd4df61 - std::panicking::continue_panic_fmt::h8ed9632bdd4b9299
                               at src/libstd/panicking.rs:381
   6:     0x556fdbd4de45 - rust_begin_unwind
                               at src/libstd/panicking.rs:308
   7:     0x556fdbd63b8c - core::panicking::panic_fmt::h0d6d5c8b201e3246
                               at src/libcore/panicking.rs:85
   8:     0x556fdbd63acb - core::panicking::panic::h5137ce59069236b2
                               at src/libcore/panicking.rs:49
   9:     0x556fdbbfb6ff - core::option::Option<T>::unwrap::hb54de68d212c5c4e
                               at /rustc/3c235d5600393dfe6c36eeed34042efad8d4f26e/src/libcore/macros.rs:12
  10:     0x556fdbbe3226 - cuckoo_miner::miner::miner::CuckooMiner::solver_thread::he1507456e1d5642e
                               at cuckoo-miner/src/miner/miner.rs:95
  11:     0x556fdbbfbd40 - cuckoo_miner::miner::miner::CuckooMiner::start_solvers::{{closure}}::h188e28cb2ac3d0bb
                               at cuckoo-miner/src/miner/miner.rs:226
  12:     0x556fdbbfd5b4 - std::sys_common::backtrace::__rust_begin_short_backtrace::h7737ceae7328ff2b
                               at /rustc/3c235d5600393dfe6c36eeed34042efad8d4f26e/src/libstd/sys_common/backtrace.rs:136
  13:     0x556fdbbe8733 - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::h86c1fc240dc884cb
                               at /rustc/3c235d5600393dfe6c36eeed34042efad8d4f26e/src/libstd/thread/mod.rs:470
  14:     0x556fdbbf74e3 - <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::he9fab614b15935de
                               at /rustc/3c235d5600393dfe6c36eeed34042efad8d4f26e/src/libstd/panic.rs:309
  15:     0x556fdbbff18f - std::panicking::try::do_call::he7067a733177cdcb
                               at /rustc/3c235d5600393dfe6c36eeed34042efad8d4f26e/src/libstd/panicking.rs:293
  16:     0x556fdbd51469 - __rust_maybe_catch_panic
                               at src/libpanic_unwind/lib.rs:87
  17:     0x556fdbbfef45 - std::panicking::try::h06b46f4a301dc1c2
                               at /rustc/3c235d5600393dfe6c36eeed34042efad8d4f26e/src/libstd/panicking.rs:272
  18:     0x556fdbbf7525 - std::panic::catch_unwind::h7c61aa97e8b4a9f2
                               at /rustc/3c235d5600393dfe6c36eeed34042efad8d4f26e/src/libstd/panic.rs:388
  19:     0x556fdbbe84c5 - std::thread::Builder::spawn_unchecked::{{closure}}::h61fcee6fade9a71b
                               at /rustc/3c235d5600393dfe6c36eeed34042efad8d4f26e/src/libstd/thread/mod.rs:469
  20:     0x556fdbbc4e43 - core::ops::function::FnOnce::call_once{{vtable.shim}}::hbdfc3648374f0644
                               at /rustc/3c235d5600393dfe6c36eeed34042efad8d4f26e/src/libcore/ops/function.rs:231
  21:     0x556fdbd4188e - <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once::h4cac16ae2114a837
                               at /rustc/3c235d5600393dfe6c36eeed34042efad8d4f26e/src/liballoc/boxed.rs:702
  22:     0x556fdbd50b0f - std::sys::unix::thread::Thread::new::thread_start::h2adc1b80820f790e
                               at /rustc/3c235d5600393dfe6c36eeed34042efad8d4f26e/src/liballoc/boxed.rs:702
                               at src/libstd/sys_common/thread.rs:14
                               at src/libstd/sys/unix/thread.rs:80
  23:     0x7f08647b26da - start_thread
  24:     0x7f08642c388e - __clone
  25:                0x0 - <unknown>
test mine_cuckatoo_lean_compat_cpu_19 ... ok
test mine_cuckatoo_lean_cuda_31 ... ignored
test mine_cuckatoo_mean_compat_cpu_31 ... ignored
test mine_cuckaroo_mean_cpu_compat_29 ... ok
test mine_cuckatoo_mean_cpu_compat_19 ... ok
test mine_cuckatoo_mean_cuda_31 ... ignored
test mine_cuckatoo_mean_cuda_19 ... ok
test mine_cuckaroo_cuda_29 ... test mine_cuckaroo_cuda_29 has been running for over 60 seconds
test mine_cuckatoo_lean_cuda_19 ... test mine_cuckatoo_lean_cuda_19 has been running for over 60 seconds