[INFO] updating cached repository im-kulikov/rust-webecho
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/im-kulikov/rust-webecho
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/im-kulikov/rust-webecho" "work/ex/beta-1.38-1/sources/1.37.0/gh/im-kulikov/rust-webecho"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/im-kulikov/rust-webecho'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/im-kulikov/rust-webecho" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/im-kulikov/rust-webecho"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/im-kulikov/rust-webecho'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7fc43e2c6f7ac0ccbe13af40c3fa258e796a35c6
[INFO] sha for GitHub repo im-kulikov/rust-webecho: 7fc43e2c6f7ac0ccbe13af40c3fa258e796a35c6
[INFO] validating manifest of im-kulikov/rust-webecho on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of im-kulikov/rust-webecho on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing im-kulikov/rust-webecho
[INFO] finished frobbing im-kulikov/rust-webecho
[INFO] frobbed toml for im-kulikov/rust-webecho written to work/ex/beta-1.38-1/sources/1.37.0/gh/im-kulikov/rust-webecho/Cargo.toml
[INFO] started frobbing im-kulikov/rust-webecho
[INFO] finished frobbing im-kulikov/rust-webecho
[INFO] frobbed toml for im-kulikov/rust-webecho written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/im-kulikov/rust-webecho/Cargo.toml
[INFO] crate im-kulikov/rust-webecho already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: failed to load source for a dependency on `iron`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   Unable to update registry `https://github.com/rust-lang/crates.io-index`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to update replaced source registry `https://github.com/rust-lang/crates.io-index`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to read root of directory source: /home/rust/src/vendor
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   No such file or directory (os error 2)
[ERROR] this task or one of its parent failed!
[ERROR] command `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` failed