[INFO] crate nanocurrency-types 0.3.15 is already in cache
[INFO] extracting crate nanocurrency-types 0.3.15 into work/ex/pr-57617/sources/master#e2f221c75932de7a29845c8d6f1f73536ad00c41/reg/nanocurrency-types/0.3.15
[INFO] extracting crate nanocurrency-types 0.3.15 into work/ex/pr-57617/sources/try#0bfb90d213a93e466b33d078a5b535a2a6f9c5ff/reg/nanocurrency-types/0.3.15
[INFO] validating manifest of nanocurrency-types-0.3.15 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 nanocurrency-types-0.3.15 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 nanocurrency-types-0.3.15
[INFO] finished frobbing nanocurrency-types-0.3.15
[INFO] frobbed toml for nanocurrency-types-0.3.15 written to work/ex/pr-57617/sources/master#e2f221c75932de7a29845c8d6f1f73536ad00c41/reg/nanocurrency-types/0.3.15/Cargo.toml
[INFO] started frobbing nanocurrency-types-0.3.15
[INFO] finished frobbing nanocurrency-types-0.3.15
[INFO] frobbed toml for nanocurrency-types-0.3.15 written to work/ex/pr-57617/sources/try#0bfb90d213a93e466b33d078a5b535a2a6f9c5ff/reg/nanocurrency-types/0.3.15/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e2f221c75932de7a29845c8d6f1f73536ad00c41-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr] error: failed to select a version for the requirement `curve25519-dalek = "^0.14"`
[INFO] [stderr]   candidate versions found which didn't match: 1.0.1, 0.21.0, 0.20.0, ...
[INFO] [stderr]   location searched: crates.io index
[INFO] [stderr] required by package `ed25519-dalek v0.6.0`
[INFO] [stderr]     ... which is depended on by `nanocurrency-types v0.3.15 (/mnt/big/crater/work/ex/pr-57617/sources/master#e2f221c75932de7a29845c8d6f1f73536ad00c41/reg/nanocurrency-types/0.3.15)`
[ERROR] this task or one of its parent failed!
[ERROR] command `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e2f221c75932de7a29845c8d6f1f73536ad00c41-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` failed