[INFO] updating cached repository adjivas/japon
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/adjivas/japon
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/adjivas/japon" "work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/adjivas/japon"`
[INFO] [stderr] Cloning into 'work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/adjivas/japon'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/adjivas/japon" "work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/adjivas/japon"`
[INFO] [stderr] Cloning into 'work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/adjivas/japon'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] db4bc8aa29c19405cbd5c21dbb79f81ebe5d72bf
[INFO] sha for GitHub repo adjivas/japon: db4bc8aa29c19405cbd5c21dbb79f81ebe5d72bf
[INFO] validating manifest of adjivas/japon on toolchain master#9f06855064ed06a50c496577b21ca50f92a2e67d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of adjivas/japon on toolchain try#d3301713b54af69ca9de941a8c6b0d8287dbd6df
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing adjivas/japon
[INFO] finished frobbing adjivas/japon
[INFO] frobbed toml for adjivas/japon written to work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/adjivas/japon/Cargo.toml
[INFO] started frobbing adjivas/japon
[INFO] finished frobbing adjivas/japon
[INFO] frobbed toml for adjivas/japon written to work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/adjivas/japon/Cargo.toml
[INFO] crate adjivas/japon already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]     Updating git repository `https://github.com/tokio-rs/tokio`
[INFO] [stderr] error: failed to load source for a dependency on `tokio`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   Unable to update https://github.com/tokio-rs/tokio#27c6dfb8
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   revspec '27c6dfb85cc13f36d5dc1d36f5de03749e9cc0fe' not found; class=Reference (4); code=NotFound (-3)
[ERROR] this task or one of its parent failed!
[ERROR] command `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` failed