[INFO] updating cached repository brson/coingrab
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/brson/coingrab
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/brson/coingrab" "work/ex/pr-57617/sources/master#e2f221c75932de7a29845c8d6f1f73536ad00c41/gh/brson/coingrab"`
[INFO] [stderr] Cloning into 'work/ex/pr-57617/sources/master#e2f221c75932de7a29845c8d6f1f73536ad00c41/gh/brson/coingrab'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/brson/coingrab" "work/ex/pr-57617/sources/try#0bfb90d213a93e466b33d078a5b535a2a6f9c5ff/gh/brson/coingrab"`
[INFO] [stderr] Cloning into 'work/ex/pr-57617/sources/try#0bfb90d213a93e466b33d078a5b535a2a6f9c5ff/gh/brson/coingrab'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6eda42ac5f3acb155a33c92f2594ed83cd9e9384
[INFO] sha for GitHub repo brson/coingrab: 6eda42ac5f3acb155a33c92f2594ed83cd9e9384
[INFO] validating manifest of brson/coingrab on toolchain master#e2f221c75932de7a29845c8d6f1f73536ad00c41
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e2f221c75932de7a29845c8d6f1f73536ad00c41-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of brson/coingrab on toolchain try#0bfb90d213a93e466b33d078a5b535a2a6f9c5ff
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0bfb90d213a93e466b33d078a5b535a2a6f9c5ff-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing brson/coingrab
[INFO] removed path dependency fancy_flocks from brson/coingrab
[INFO] finished frobbing brson/coingrab
[INFO] frobbed toml for brson/coingrab written to work/ex/pr-57617/sources/master#e2f221c75932de7a29845c8d6f1f73536ad00c41/gh/brson/coingrab/Cargo.toml
[INFO] started frobbing brson/coingrab
[INFO] removed path dependency fancy_flocks from brson/coingrab
[INFO] finished frobbing brson/coingrab
[INFO] frobbed toml for brson/coingrab written to work/ex/pr-57617/sources/try#0bfb90d213a93e466b33d078a5b535a2a6f9c5ff/gh/brson/coingrab/Cargo.toml
[INFO] crate brson/coingrab has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e2f221c75932de7a29845c8d6f1f73536ad00c41-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: failed to select a version for the requirement `chrono = "^0.3.1"`
[INFO] [stderr]   candidate versions found which didn't match: 0.4.6, 0.4.5, 0.4.4, ...
[INFO] [stderr]   location searched: crates.io index
[INFO] [stderr] required by package `coingrab v0.1.0 (/mnt/big/crater/work/ex/pr-57617/sources/master#e2f221c75932de7a29845c8d6f1f73536ad00c41/gh/brson/coingrab)`
[ERROR] this task or one of its parent failed!
[ERROR] command `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e2f221c75932de7a29845c8d6f1f73536ad00c41-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` failed