Add hello-world example for Rust 1.94.1

examples/helloworld-rust1.94.1/Dockerfile

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+FROM rust:1.94.1-bookworm AS build
+
+WORKDIR /src
+
+COPY ./helloworld.rs /src/helloworld.rs
+
+RUN set -xe; \
+    rustc -o /helloworld /src/helloworld.rs
+
+FROM scratch
+
+COPY --from=build /helloworld /helloworld
+COPY --from=build /lib/x86_64-linux-gnu/libc.so.6 /lib/x86_64-linux-gnu/
+COPY --from=build /lib/x86_64-linux-gnu/libgcc_s.so.1 /lib/x86_64-linux-gnu/
+COPY --from=build /lib64/ld-linux-x86-64.so.2 /lib64/

examples/helloworld-rust1.94.1/Kraftfile

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+spec: v0.6
+
+name: helloworld-rust1.75
+
+runtime: base:latest
+
+rootfs: ./Dockerfile
+
+cmd: ["/helloworld"]

examples/helloworld-rust1.94.1/README.md

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+# Rust "Hello, World!"
+
+This directory contains a [Rust](https://www.rust-lang.org/) "Hello, World!" example running on Unikraft.
+
+## Set Up
+
+To run this example, [install Unikraft's companion command-line toolchain `kraft`](https://unikraft.org/docs/cli), clone this repository and `cd` into this directory.
+
+## Run and Use
+
+Use `kraft` to run the image and start a Unikraft instance:
+
+```bash
+kraft run --rm --plat qemu --arch x86_64 .
+```
+
+If the `--plat` argument is left out, it defaults to `qemu`.
+If the `--arch` argument is left out, it defaults to your system's CPU architecture.
+
+You should see a "Bye, world, from rust 🦀!" message.
+
+## Inspect and Close
+
+To list information about the Unikraft instance, use:
+
+```bash
+kraft ps
+```
+
+```text
+NAME            KERNEL                          ARGS         CREATED        STATUS   MEM  PORTS  PLAT
+juicy_goblin  oci://unikraft.org/base:latest  /helloworld  9 seconds ago  running  64M         qemu/x86_64
+```
+
+The instance name is `juicy_goblin`.
+To close the Unikraft instance, close the `kraft` process (e.g., via `Ctrl+c`) or run:
+
+```bash
+kraft rm juicy_goblin
+```
+
+Note that depending on how you modify this example your instance **may** need more memory to run.
+To do so, use the `kraft run`'s `-M` flag, for example:
+
+```bash
+kraft run --rm --plat qemu --arch x86_64 -M 512M .
+```
+
+## `kraft` and `sudo`
+
+Mixing invocations of `kraft` and `sudo` can lead to unexpected behavior.
+Read more about how to start `kraft` without `sudo` at [https://unikraft.org/sudoless](https://unikraft.org/sudoless).
+
+## Learn More
+
+- [How to run unikernels locally](https://unikraft.org/docs/cli/running)
+- [Building `Dockerfile` Images with `BuildKit`](https://unikraft.org/guides/building-dockerfile-images-with-buildkit)

examples/helloworld-rust1.94.1/helloworld.rs

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+fn main() {
+    println!("Bye, world, from rust 🦀!");
+}