Read the error
How to read Rust compiler errors on Windows
# Get full error output:
PS> cargo build 2>&1
# Or get more detail:
PS> RUST_BACKTRACE=1 cargo build
# Explain a specific error code:
PS> rustc --explain E0308
Common causes
= ...
Why Rust is not compiling on Windows
Crate uses Unix-only APIs (fork, libc, nix)
The crate does not support Windows
Check crate docs for Windows support; look for a windows feature flagbuild.rs fails: cc not found
build script needs a C compiler
Install MSVC Build Tools or set CC environment variablePath with spaces causes build script failure
Windows paths with spaces break some build scripts
Move project to a path without spaces, e.g. C:\Projects\myapptype annotations needed — cannot infer type
Rust type inference failure, not Windows-specific
Add explicit type annotation: let x: Veccannot find function in this scope
Import missing or feature flag not enabled
Add use statement or enable the required crate featureCheck crate Windows support
Check if a crate supports Windows
# Check crate metadata for Windows support:
PS> cargo metadata --format-version 1 | python -c "import sys,json; d=json.load(sys.stdin)"
# Or check crates.io page — look for cfg(windows) in source
# Or look at CI matrix in the crate's GitHub Actions
FAQ
Not compiling questions
A crate compiles on Linux but not on Windows
The crate may use Unix-specific dependencies (libc, nix, mio with Unix backend). Check the crate's Cargo.toml for [target.'cfg(unix)'.dependencies] sections. Look for a windows or wasm feature flag that selects a different backend. If none exists, look for a Windows-compatible alternative crate.
Rust error E0425 — cannot find value in this scope
This usually means a missing use import. Check: (1) the item is in scope with the correct use path, (2) the crate feature that exposes this item is enabled in Cargo.toml, (3) you are on the correct Rust edition (2021 has a different prelude).