[INFO] updating cached repository majecty/codechain-agent-hub
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/majecty/codechain-agent-hub
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/majecty/codechain-agent-hub" "work/ex/beta-1.38-1/sources/1.37.0/gh/majecty/codechain-agent-hub"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/majecty/codechain-agent-hub'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/majecty/codechain-agent-hub" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/majecty/codechain-agent-hub"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/majecty/codechain-agent-hub'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 420a9e05c3afce87fc23be5c81eaf00a3858232e
[INFO] sha for GitHub repo majecty/codechain-agent-hub: 420a9e05c3afce87fc23be5c81eaf00a3858232e
[INFO] validating manifest of majecty/codechain-agent-hub 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 majecty/codechain-agent-hub 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 majecty/codechain-agent-hub
[INFO] finished frobbing majecty/codechain-agent-hub
[INFO] frobbed toml for majecty/codechain-agent-hub written to work/ex/beta-1.38-1/sources/1.37.0/gh/majecty/codechain-agent-hub/Cargo.toml
[INFO] started frobbing majecty/codechain-agent-hub
[INFO] finished frobbing majecty/codechain-agent-hub
[INFO] frobbed toml for majecty/codechain-agent-hub written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/majecty/codechain-agent-hub/Cargo.toml
[INFO] crate majecty/codechain-agent-hub 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]     Updating git repository `https://github.com/CodeChain-io/codechain.git`
[INFO] [stderr] error: failed to load source for a dependency on `codechain-rpc`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   Unable to update https://github.com/CodeChain-io/codechain.git?rev=7cd80ce55f25513e1b4b60f2e148eb9641c3ee51#7cd80ce5
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   revspec '7cd80ce55f25513e1b4b60f2e148eb9641c3ee51' 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" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` failed