[INFO] updating cached repository chippers/gitsplode
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/chippers/gitsplode
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/chippers/gitsplode" "work/ex/beta-1.38-1/sources/1.37.0/gh/chippers/gitsplode"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/chippers/gitsplode'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/chippers/gitsplode" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/chippers/gitsplode"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/chippers/gitsplode'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0532a427d84c2d2ae7330526949a95b1cb942f93
[INFO] sha for GitHub repo chippers/gitsplode: 0532a427d84c2d2ae7330526949a95b1cb942f93
[INFO] validating manifest of chippers/gitsplode 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 chippers/gitsplode 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 chippers/gitsplode
[INFO] finished frobbing chippers/gitsplode
[INFO] frobbed toml for chippers/gitsplode written to work/ex/beta-1.38-1/sources/1.37.0/gh/chippers/gitsplode/Cargo.toml
[INFO] started frobbing chippers/gitsplode
[INFO] finished frobbing chippers/gitsplode
[INFO] frobbed toml for chippers/gitsplode written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/chippers/gitsplode/Cargo.toml
[INFO] crate chippers/gitsplode 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 `byte_trie`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   Unable to update /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/chippers/byte_trie
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to read `/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/chippers/byte_trie/Cargo.toml`
[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