[INFO] crate constellation-server 1.3.8 is already in cache
[INFO] extracting crate constellation-server 1.3.8 into work/ex/pr-57745/sources/master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039/reg/constellation-server/1.3.8
[INFO] extracting crate constellation-server 1.3.8 into work/ex/pr-57745/sources/try#29640c57b5f92febba0e40c50cb863c9a7ede51d/reg/constellation-server/1.3.8
[INFO] validating manifest of constellation-server-1.3.8 on toolchain master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+f613dc138b4012cf3d2eb40718fbcc7cf0a34039-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of constellation-server-1.3.8 on toolchain try#29640c57b5f92febba0e40c50cb863c9a7ede51d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+29640c57b5f92febba0e40c50cb863c9a7ede51d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing constellation-server-1.3.8
[INFO] finished frobbing constellation-server-1.3.8
[INFO] frobbed toml for constellation-server-1.3.8 written to work/ex/pr-57745/sources/master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039/reg/constellation-server/1.3.8/Cargo.toml
[INFO] started frobbing constellation-server-1.3.8
[INFO] finished frobbing constellation-server-1.3.8
[INFO] frobbed toml for constellation-server-1.3.8 written to work/ex/pr-57745/sources/try#29640c57b5f92febba0e40c50cb863c9a7ede51d/reg/constellation-server/1.3.8/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+f613dc138b4012cf3d2eb40718fbcc7cf0a34039-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr] error: failed to select a version for the requirement `ring = "^0.11.0"`
[INFO] [stderr]   candidate versions found which didn't match: 0.14.2, 0.14.1, 0.14.0, ...
[INFO] [stderr]   location searched: crates.io index
[INFO] [stderr] required by package `cookie v0.9.1`
[INFO] [stderr]     ... which is depended on by `rocket v0.3.0`
[INFO] [stderr]     ... which is depended on by `constellation-server v1.3.8 (/mnt/big/crater/work/ex/pr-57745/sources/master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039/reg/constellation-server/1.3.8)`
[ERROR] this task or one of its parent failed!
[ERROR] command `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+f613dc138b4012cf3d2eb40718fbcc7cf0a34039-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` failed