browserslist: BrowserslistError: Unknown version 0 of and_chr

Steps to reproduce

1. browserslist@1.5.2 postcss@5.2.11 webpack@2.2.0
2. browserslist config in the package.json

...
"browserslist": [
    "> 1% in RU",
    "last 2 versions"
]
...

1. postcss.config.js is simple

module.exports = {
    plugins: [
        require('postcss-import')(),
        require('autoprefixer')()
    ]
};

1. NODE_ENV=production webpack --hide-modules --bail throws

ERROR in ./styles/index.css
Module build failed: ModuleBuildError: Module build failed: BrowserslistError: Unknown version 0 of and_chr
    at error (~/{path_to_project}/node_modules/browserslist/index.js:29:11)
    at Function.select (~/{path_to_project}/node_modules/browserslist/index.js:555:21)
    at ~/{path_to_project}/node_modules/browserslist/index.js:180:41
    at Array.forEach (native)
    at browserslist (~/{path_to_project}/node_modules/browserslist/index.js:169:13)
    at isSupported (~/{path_to_project}/node_modules/caniuse-api/dist/index.js:75:10)
    at ~/{path_to_project}/node_modules/postcss-merge-rules/dist/lib/ensureCompatibility.js:87:66
...

PS

• NODE_ENV != production -> ok
• not use “> 1% in RU” -> ok
• use “> 1% in US” -> not ok