Download gnu and MUSL
# wget https://static.rust-lang.org/dist/rust-1.43.1-x86_64-unknown-linux-gnu.tar.gz
# wget https://static.rust-lang.org/dist/rust-1.43.1-x86_64-unknown-linux-musl.tar.gz
Setup
# tar -xvf rust-1.43.1-x86_64-unknown-linux-musl.tar.gz
# tar -xvf rust-1.43.1-x86_64-unknown-linux-gnu.tar.gz
# cd rust-1.43.1-x86_64-unknown-linux-musl && sudo ./install.sh
# cd rust-1.43.1-x86_64-unknown-linux-gnu && sudo ./install.sh
Compile Firecracker
# cd firecracker
...
error occurred: Failed to find tool. Is `musl-gcc` installed?
...
Install musl-gcc
# sudo apt-get install -y musl-tools
Reference