[INFO] updating cached repository PlasmaPower/railroad
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/PlasmaPower/railroad
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/PlasmaPower/railroad" "work/ex/pr-57483/sources/master#2bde39b8edce6463e1c37f8a8082a875e7b536b1/gh/PlasmaPower/railroad"`
[INFO] [stderr] Cloning into 'work/ex/pr-57483/sources/master#2bde39b8edce6463e1c37f8a8082a875e7b536b1/gh/PlasmaPower/railroad'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/PlasmaPower/railroad" "work/ex/pr-57483/sources/try#0d8b5d1f16bab9e975695518ff8705bdab9fe94c/gh/PlasmaPower/railroad"`
[INFO] [stderr] Cloning into 'work/ex/pr-57483/sources/try#0d8b5d1f16bab9e975695518ff8705bdab9fe94c/gh/PlasmaPower/railroad'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] dff716a2230b04092c46a967f5a278f0c41c3303
[INFO] sha for GitHub repo PlasmaPower/railroad: dff716a2230b04092c46a967f5a278f0c41c3303
[INFO] validating manifest of PlasmaPower/railroad on toolchain master#2bde39b8edce6463e1c37f8a8082a875e7b536b1
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+2bde39b8edce6463e1c37f8a8082a875e7b536b1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of PlasmaPower/railroad on toolchain try#0d8b5d1f16bab9e975695518ff8705bdab9fe94c
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0d8b5d1f16bab9e975695518ff8705bdab9fe94c-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing PlasmaPower/railroad
[INFO] removed workspace from PlasmaPower/railroad
[INFO] removed path dependency nanocurrency-peering from PlasmaPower/railroad
[INFO] removed path dependency nanocurrency-protocol from PlasmaPower/railroad
[INFO] removed path dependency nanocurrency-types from PlasmaPower/railroad
[INFO] finished frobbing PlasmaPower/railroad
[INFO] frobbed toml for PlasmaPower/railroad written to work/ex/pr-57483/sources/master#2bde39b8edce6463e1c37f8a8082a875e7b536b1/gh/PlasmaPower/railroad/Cargo.toml
[INFO] started frobbing PlasmaPower/railroad
[INFO] removed workspace from PlasmaPower/railroad
[INFO] removed path dependency nanocurrency-peering from PlasmaPower/railroad
[INFO] removed path dependency nanocurrency-protocol from PlasmaPower/railroad
[INFO] removed path dependency nanocurrency-types from PlasmaPower/railroad
[INFO] finished frobbing PlasmaPower/railroad
[INFO] frobbed toml for PlasmaPower/railroad written to work/ex/pr-57483/sources/try#0d8b5d1f16bab9e975695518ff8705bdab9fe94c/gh/PlasmaPower/railroad/Cargo.toml
[INFO] crate PlasmaPower/railroad has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+2bde39b8edce6463e1c37f8a8082a875e7b536b1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Updating crates.io index
[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 `railroad v0.1.0 (/mnt/big/crater/work/ex/pr-57483/sources/master#2bde39b8edce6463e1c37f8a8082a875e7b536b1/gh/PlasmaPower/railroad)`
[ERROR] this task or one of its parent failed!
[ERROR] command `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+2bde39b8edce6463e1c37f8a8082a875e7b536b1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` failed