[INFO] updating cached repository https://github.com/rust-lang-ja/rust-by-example-ja
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] [stderr] From https://github.com/rust-lang-ja/rust-by-example-ja
[INFO] [stderr]    dbe74cb..394e177  2018-edition -> 2018-edition
[INFO] [stderr]    6807a20..9f4ec26  custom_css   -> custom_css
[INFO] [stderr]    e2b18c7..d93e359  master       -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d93e3591e85774e9d7bf32b8d1306b8a3b77a90c
[ERROR] this task or one of its parent failed!
[ERROR] overridden task result to broken:cargo-toml
[ERROR] caused by: missing Cargo.toml
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.