Rust · borrow-checker clean · From $20
Do My Rust Homework
Rust is the one language where the assignment is graded before it ever runs. The borrow checker has to approve your code first, so the deliverable is code that compiles, not just code that works. We win that fight for you: ownership, lifetimes, and clippy, clean on the first build.
Compiles -D warnings clean · Zero unwrap panics · Pay 50% after it runs
What we cover
The Rust your course actually grades
Every Rust assignment is a Cargo crate, built with cargo build and tested with cargo test, never a hand-written Makefile. The work lives in ownership and borrowing: move semantics, one owner, & shared against &mut exclusive, lifetimes, and the heap toolkit of Box, Rc, Arc, and RefCell. We write to the 2021 edition by default and pin whatever your rust-toolchain.toml demands.
Past the syntax, depth is where points live. Traits and generics with the right bound, the Iterator trait over manual indexing, exhaustive match arms on every enum, and Result with ? in place of exceptions. For the hard labs we reason about Send and Sync, choose an Arc and Mutex pairing over an RwLock over a channel on purpose, and keep any unsafe block small enough that miri can verify it.
What we do
What a typical Rust assignment looks like
Rust coursework lands in four shapes, from a 150-line single-file exercise to a multi-file crate. Send the brief and a developer who works in Rust takes the one you have.
A safe linked list, tree, or graph that satisfies the borrow checker
The too-many-lists gauntlet. We build a singly or doubly linked list with Box<T> for owned nodes, then move to Rc<RefCell<T>> once shared ownership and interior mutability make the naive &mut version impossible. This is the assignment where students learn why a linked list is basically impossible in safe Rust without Rc, RefCell, or unsafe.
A CLI tool with clap and Result / ? error handling
A grep clone, a word counter, a CSV or JSON parser, a calculator. Args parse through clap, files read with proper error propagation, and every fallible call returns through ? into an anyhow or thiserror type instead of an .unwrap() the autograder can trip. The CIS 1905 and Comprehensive Rust exercise shape.
A multithreaded or async concurrency project
A thread pool, a parallel map-reduce, or the Stanford CS 110L balancebeam load balancer. We pick Arc<Mutex<T>>, an mpsc channel, or tokio async and .await for the non-blocking I/O, health checks, and rate limiting, and the compiler proves the result is free of data races before it ever runs.
A systems project using unsafe or ptrace
The CS 110L DEET debugger, a ptrace-driven GDB-like tool that controls a child process through the nix crate, or an unsafe data structure verified clean under miri. Raw pointers stay inside the smallest possible unsafe block, and every invariant the compiler can no longer check is documented and tested.
Scoped to your course
Rust assignment help that matches your grader
We write to the conventions of the course you are in, not a generic Rust template. UPenn CIS 1905 and CIS 198 run ownership, traits, generics, and data-race-free parallelism assignment by assignment in Cargo. Google's Comprehensive Rust follows the same arc. Stanford CS 110L, Safety in Systems Programming, builds six lab weeks toward the DEET debugger and the balancebeam load balancer, and contrasts Rust against the C memory bugs from the prior course on purpose.
The grading is mechanical, so we match it. Autograders on GitHub Classroom and Gradescope build your crate and run a hidden cargo test suite against the public API. Two gates are near universal: cargo clippy -- -D warnings, where an idiomatic-style miss fails the build, and cargo fmt --check on formatting. Unsafe labs get verified with miri, performance labs grade a criterion benchmark, and submissions run through MOSS, increasingly Dolos, for plagiarism. We hand back code that clears every one of those before you submit it.
Where it goes wrong
Where Rust homework goes wrong, and the fix
Rust errors share one trait that no other language on this site does: they are caught at compile time. The borrow checker refuses the build, so there is no runtime crash to reproduce, the fix is structural. Six failures account for most stuck submissions.
use of moved value (E0382)
Passing a non-Copy value by value moves ownership, so the original binding is dead afterward. We borrow with & instead of moving, clone only when a real copy is needed, or restructure so each value has exactly one owner. In loops we iterate over &collection so the vector survives the loop.
cannot borrow as mutable (E0499 / E0502)
Holding a & and a &mut at once, or two &mut at once, to the same data. We shorten the borrow scope so the immutable reference ends before the mutable one starts, split the work into separate statements, or move to RefCell for runtime-checked interior mutability where the structure demands it.
not declared as mutable (E0596)
Mutating through a binding declared without mut. We add mut to the let, change the receiver to &mut self, or, for shared state already behind Rc, switch to Rc<RefCell<T>> so the mutation is checked at runtime instead of rejected at compile time.
does not live long enough (E0597 / E0106)
Returning or storing a reference whose referent is dropped at the end of the scope. We return an owned value, add an explicit lifetime annotation where elision fails, or extend ownership with Box or Rc so the data outlives the reference that points at it.
closure may outlive borrowed value (Send / Sync / static)
A thread captures a reference the borrow checker cannot prove lives long enough, or a non-Send type crosses a thread boundary. We move the data into the closure, wrap shared state in Arc<Mutex<T>>, or hand it off through a channel. The compiler refuses the data race at compile time, so there is nothing to reproduce, the fix is structural.
panic from .unwrap() / .expect() / index out of bounds
An Option::None or a Result::Err unwrapped, or vec[i] read past the end. We replace .unwrap() with match, if let, or the ? operator and proper Result propagation, use .get(i) for fallible indexing, and reach for checked_add when overflow has to be deliberate. Most rubrics dock any .unwrap() on a path the tests hit.
How help with Rust homework works
Send the crate or the brief, whatever you have. A named developer reads the spec, fixes the move or borrow conflict, and rebuilds until cargo build is green and clippy is silent. You get the borrow-checker-clean code, a short note on each ownership choice, and the run commands. One stuck E0382 costs a fraction of a whole crate, so a single error is the smallest job we take.
// before: error[E0499]: cannot borrow `*head` as mutable more than
// once at a time --> src/list.rs:42:9 ... build refused, 0/100
//
// after: cargo build Compiling list v0.1.0 ... Finished in 0.41s
// cargo test test result: ok. 14 passed; 0 failed
// cargo clippy -- -D warnings no warnings
//
// fix: swapped the naive &mut node for Rc<RefCell<Node>>, so two owners
// share the node and mutation is checked at runtime, not refused.
//
// "I could finally explain why it was Rc<RefCell<T>> in my viva."
// - systems programming student, 2026How it works
Four steps, one fixed price
Send the crate or the brief
Upload the assignment PDF, the rubric, your edition and channel from rust-toolchain.toml, and the deadline. One short form, no account.
Get a fixed quote
A Rust developer reads the spec and sends one price. No hourly meter, no rush fee on a tight deadline.
Pay half, watch it build
Approve the quote and pay 50% to start. You can message your developer while the crate comes together.
Pay the rest after it runs
Run cargo build and cargo test on your machine. Pay the other 50% only once it is green. 7 days of free revisions either way.
Pricing
One fixed price per Rust assignment, from $20
Priced by complexity, not by a meter. A single borrow error sits at the bottom of the range, a multi-file balancebeam-style crate at the top. You see the full number before you pay anything.
Rust homework help
Get help with your Rust assignment
Straight answers on the borrow checker, the edition match, the clippy gate, and the 50/50 terms. Turnaround is 48 to 72 hours on a standard crate, and we quote a delivery time before you pay.
Will it compile, does it pass the borrow checker? +
Yes. Delivery builds clean with cargo build and satisfies ownership, borrowing, and lifetimes. You pay the second half only after cargo build and cargo test run clean on your machine, so you never pay for code that the checker rejects.
Can you fix a use of moved value or cannot borrow as mutable error in code I already wrote? +
Yes. We diagnose the move or borrow conflict (E0382, E0499, E0502), shorten the borrow scope or switch to & or Rc<RefCell<T>>, and rebuild clean. A single compile error is the cheapest tier, well under the price of a whole crate.
Will it pass cargo clippy and cargo fmt and the autograder warning gate? +
Yes. Code ships cargo clippy -- -D warnings clean and cargo fmt --check clean, because most Gradescope rubrics fail the build on any warning, not just on a wrong answer.
Which edition do you write to, 2018, 2021, or 2024? +
Whatever your Cargo.toml and rust-toolchain.toml specify. Tell us the edition and the channel and we pin them so the crate builds identically to the grader. The default is 2021 if you do not say.
Can you implement my linked list or tree without unsafe? +
Yes. We use Box<T> for owned nodes and Rc<RefCell<T>> for shared and mutable ones. If the spec requires unsafe, we deliver it verified clean under miri so the undefined-behavior interpreter signs off on it.
Can you do the concurrency project, threads, Arc<Mutex>, or tokio async? +
Yes. Thread pools, mpsc channels, Arc<Mutex<T>>, or async and .await on tokio, including balancebeam-style load balancers. Every version is free of data races, which the compiler proves before the code runs.
Will you remove the .unwrap()s and use proper Result and ? error handling? +
Yes. We replace .unwrap() and .expect() with match, if let, and the ? operator, and we model errors with anyhow or thiserror so the happy path never panics.
Can I explain the ownership choices in my viva? +
Yes. Each delivery includes a short sheet that answers why this is Rc<RefCell<T>> and not &mut, why a given lifetime annotation is needed, and two or three questions a TA is likely to ask.
Related languages
Choosing between the borrow checker and manual memory?
Rust is the memory-safe-without-a-garbage-collector neighbor. C++ lets you build and then leak or segfault, where Valgrind grades the runtime. C is the lower-level systems language CS 110L contrasts Rust against directly. Go keeps safe concurrency but ships a garbage collector and goroutines instead of Send and Sync.
Hand the borrow checker to us
Send the crate or the brief now. The first reply is free, you pin your edition, and you pay nothing until you approve the price.