The actions dtolnay/rust-toolchain@d1031067263f94b142dd6c0ce24c5eb9d02d52a0, swatinem/rust-cache@6323deb102c322ba6fcbdcafc7e3dddab59af2b6, and taiki-e/install-action@a2a5f6e99e1a31540baa0468acfa302cff0f359f are not allowed in hyperpolymath/echidna because all actions must be from a repository owned by hyperpolymath, created by GitHub, or verified in the GitHub Marketplace. All actions must also be pinned to a full-length commit SHA.