• Ferroxyl indicator is a solution containing potassium hexacyanoferrate(III) and phenolphthalein. It turns blue in the presence of Fe2+ ions, and pink in the presence of hydroxide ions. It can be used to detect metal oxidation, and is often used to detect rusting in various situations. (c) Wikipedia

• simple script to scan full gentoo tree for all rust ebuilds with cargo audit and report vulnerable crates

it's a bit ugly right now, but it is planned to improve it to generate json reports too.