[INFO] updating cached repository Jasper-Bekkers/ash-library-integration-test
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Jasper-Bekkers/ash-library-integration-test
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Jasper-Bekkers/ash-library-integration-test" "work/ex/beta-1.38-1/sources/1.37.0/gh/Jasper-Bekkers/ash-library-integration-test"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Jasper-Bekkers/ash-library-integration-test'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Jasper-Bekkers/ash-library-integration-test" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Jasper-Bekkers/ash-library-integration-test"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Jasper-Bekkers/ash-library-integration-test'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f3f291ba24257a01a1e91daeca45eb3d51c4fbca
[INFO] sha for GitHub repo Jasper-Bekkers/ash-library-integration-test: f3f291ba24257a01a1e91daeca45eb3d51c4fbca
[INFO] validating manifest of Jasper-Bekkers/ash-library-integration-test on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Jasper-Bekkers/ash-library-integration-test on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Jasper-Bekkers/ash-library-integration-test
[INFO] finished frobbing Jasper-Bekkers/ash-library-integration-test
[INFO] frobbed toml for Jasper-Bekkers/ash-library-integration-test written to work/ex/beta-1.38-1/sources/1.37.0/gh/Jasper-Bekkers/ash-library-integration-test/Cargo.toml
[INFO] started frobbing Jasper-Bekkers/ash-library-integration-test
[INFO] finished frobbing Jasper-Bekkers/ash-library-integration-test
[INFO] frobbed toml for Jasper-Bekkers/ash-library-integration-test written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Jasper-Bekkers/ash-library-integration-test/Cargo.toml
[INFO] crate Jasper-Bekkers/ash-library-integration-test already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Updating git repository `https://github.com/Jasper-Bekkers/ash.git`
[INFO] [stderr] error: failed to load source for a dependency on `ash`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   Unable to update https://github.com/Jasper-Bekkers/ash.git#7f33d0a1
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   revspec '7f33d0a10feb7fa611f5f2d3038bd8dd6e04ff2f' not found; class=Reference (4); code=NotFound (-3)
[ERROR] this task or one of its parent failed!
[ERROR] command `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` failed