[INFO] updating cached repository george-aprozeanu/alibi
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/george-aprozeanu/alibi
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/george-aprozeanu/alibi" "work/ex/pr-57617/sources/master#e2f221c75932de7a29845c8d6f1f73536ad00c41/gh/george-aprozeanu/alibi"`
[INFO] [stderr] Cloning into 'work/ex/pr-57617/sources/master#e2f221c75932de7a29845c8d6f1f73536ad00c41/gh/george-aprozeanu/alibi'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/george-aprozeanu/alibi" "work/ex/pr-57617/sources/try#0bfb90d213a93e466b33d078a5b535a2a6f9c5ff/gh/george-aprozeanu/alibi"`
[INFO] [stderr] Cloning into 'work/ex/pr-57617/sources/try#0bfb90d213a93e466b33d078a5b535a2a6f9c5ff/gh/george-aprozeanu/alibi'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a50aa838ffb46f345e920b9591a3db9969d13bf2
[INFO] sha for GitHub repo george-aprozeanu/alibi: a50aa838ffb46f345e920b9591a3db9969d13bf2
[INFO] validating manifest of george-aprozeanu/alibi 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 george-aprozeanu/alibi 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 george-aprozeanu/alibi
[INFO] removed path dependency semver from george-aprozeanu/alibi
[INFO] finished frobbing george-aprozeanu/alibi
[INFO] frobbed toml for george-aprozeanu/alibi written to work/ex/pr-57617/sources/master#e2f221c75932de7a29845c8d6f1f73536ad00c41/gh/george-aprozeanu/alibi/Cargo.toml
[INFO] started frobbing george-aprozeanu/alibi
[INFO] removed path dependency semver from george-aprozeanu/alibi
[INFO] finished frobbing george-aprozeanu/alibi
[INFO] frobbed toml for george-aprozeanu/alibi written to work/ex/pr-57617/sources/try#0bfb90d213a93e466b33d078a5b535a2a6f9c5ff/gh/george-aprozeanu/alibi/Cargo.toml
[INFO] crate george-aprozeanu/alibi 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 `semver = "^0.10.0"`
[INFO] [stderr]   candidate versions found which didn't match: 0.9.0, 0.8.0, 0.7.0, ...
[INFO] [stderr]   location searched: crates.io index
[INFO] [stderr] required by package `alibi v0.1.0 (/mnt/big/crater/work/ex/pr-57617/sources/master#e2f221c75932de7a29845c8d6f1f73536ad00c41/gh/george-aprozeanu/alibi)`
[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