Tock 2.1.1 uses a Rust toolchain that is too old to understand libtock-rs' current Cargo.toml. This causes cargo commands in the Tock submodule to fail. This PR updates the Tock submodule to latest master, giving it a recent toolchain. This fixes make clean and likely other build commands.
This also gives access to the license checker, which we may want to use in libtock-rs.
Tock 2.1.1 uses a Rust toolchain that is too old to understand
libtock-rs' currentCargo.toml. This causescargocommands in the Tock submodule to fail. This PR updates the Tock submodule to latestmaster, giving it a recent toolchain. This fixesmake cleanand likely other build commands.This also gives access to the license checker, which we may want to use in
libtock-rs.