Rust Xtensa Toolchain v1.84.0.0 for ESP32, ESP32-S2, ESP32-S3.
Installation: https://docs.esp-rs.org/book/installation/riscv-and-xtensa.html
espup install --toolchain-version
source ~/export-esp.sh
Note: For the ESP32-C2, ESP32-C3, ESP32-C6, or ESP32-H2, you can use the Rust nightly, stable, or esp channels.