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Are you cross compiling these from Ubuntu as described at https://disconnected.systems/blog/rust-powered-rover/ ?
Essentially:
sudo apt install -y build-essential gcc-arm-linux-gnueabihf libc6-armhf-cross libc6-dev-armhf-cross
curl https://sh.rustup.rs -sSf | sh -s -- -y --default-toolchain=stable
source $HOME/.cargo/env
tee $HOME/.cargo/config <<'EOF'
[target.arm-unknown-linux-gnueabihf]
linker = "arm-linux-gnueabihf-gcc"
EOF
rustup default stable
rustup target add arm-unknown-linux-gnueabihfThen cargo build --release --target arm-unknown-linux-gnueabihf?
Using those instructions, even hello world segfaults for me when compiled from Ubuntu for Pi Zero (though the same binary runs fine on armv7 like RPi3).
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