# rustc version rustc 1.16.0-nightly (a52da95ce 2017-01-20)# docs.rs version cratesfyi 0.3.1 (35080d4 2017-01-24)# build log Updating registry `https://github.com/rust-lang/crates.io-index` Downloading serde_json v0.9.2 thread 'main' panicked at 'cyclic package dependency: package `cargo_metadata v0.1.1` depends on itself', src/bin/cratesfyi.rs:137 note: Run with `RUST_BACKTRACE=1` for a backtrace.