Running Example 07 fails for me.

[GanbaruTobi]

Hi,

the only change i did is using a local model:

configure(
        LM::builder()
            .base_url("http://localhost:11434/v1".to_string())
            .model("llama3.2".to_string())
            .temperature(0.0)
            .build()
            .await?,
        ChatAdapter,
    );

The prediction is also correct, but trying to read the history fails with:

prediction: "Paris"

thread 'main' panicked at /home/gbaru/DSRs/crates/dspy-rs/src/core/lm/mod.rs:657:14:
called `Option::unwrap()` on a `None` value
stack backtrace:
   0: __rustc::rust_begin_unwind
             at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:697:5
   1: core::panicking::panic_fmt
             at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panicking.rs:75:14
   2: core::panicking::panic
             at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panicking.rs:145:5
   3: core::option::unwrap_failed
             at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/option.rs:2130:5
   4: core::option::Option<T>::unwrap
             at /home/gbaru/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/option.rs:1009:21
   5: dspy_rs::core::lm::LM::inspect_history::{{closure}}::{{closure}}
             at ./src/core/lm/mod.rs:657:14
   6: dspy_rs::core::lm::LM::inspect_history::{{closure}}
             at ./src/core/lm/mod.rs:648:5
   7: _07_inspect_history::main::{{closure}}
             at ./examples/07-inspect-history.rs:45:47
   8: <core::pin::Pin<P> as core::future::future::Future>::poll
             at /home/gbaru/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/future/future.rs:133:9
   9: tokio::runtime::park::CachedParkThread::block_on::{{closure}}
             at /home/gbaru/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.49.0/src/runtime/park.rs:284:71
  10: tokio::task::coop::with_budget
             at /home/gbaru/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.49.0/src/task/coop/mod.rs:167:5
  11: tokio::task::coop::budget
             at /home/gbaru/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.49.0/src/task/coop/mod.rs:133:5
  12: tokio::runtime::park::CachedParkThread::block_on
             at /home/gbaru/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.49.0/src/runtime/park.rs:284:31
  13: tokio::runtime::context::blocking::BlockingRegionGuard::block_on
             at /home/gbaru/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.49.0/src/runtime/context/blocking.rs:66:14
  14: tokio::runtime::scheduler::multi_thread::MultiThread::block_on::{{closure}}
             at /home/gbaru/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.49.0/src/runtime/scheduler/multi_thread/mod.rs:89:22
  15: tokio::runtime::context::runtime::enter_runtime
             at /home/gbaru/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.49.0/src/runtime/context/runtime.rs:65:16
  16: tokio::runtime::scheduler::multi_thread::MultiThread::block_on
             at /home/gbaru/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.49.0/src/runtime/scheduler/multi_thread/mod.rs:88:9
  17: tokio::runtime::runtime::Runtime::block_on_inner
             at /home/gbaru/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.49.0/src/runtime/runtime.rs:370:50
  18: tokio::runtime::runtime::Runtime::block_on
             at /home/gbaru/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.49.0/src/runtime/runtime.rs:340:18
  19: _07_inspect_history::main
             at ./examples/07-inspect-history.rs:48:7
  20: core::ops::function::FnOnce::call_once
             at /home/gbaru/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/ops/function.rs:253:5