[INFO] updating cached repository sleepymurph/dmv
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/sleepymurph/dmv
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/sleepymurph/dmv" "work/ex/beta-1.38-1/sources/1.37.0/gh/sleepymurph/dmv"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/sleepymurph/dmv'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/sleepymurph/dmv" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sleepymurph/dmv"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sleepymurph/dmv'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] fc268a0ae2fdb8681acf577bbff07cee1b8ca2f0
[INFO] sha for GitHub repo sleepymurph/dmv: fc268a0ae2fdb8681acf577bbff07cee1b8ca2f0
[INFO] validating manifest of sleepymurph/dmv 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 sleepymurph/dmv 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 sleepymurph/dmv
[INFO] removed path dependency disk_backed from sleepymurph/dmv
[INFO] removed path dependency human_readable from sleepymurph/dmv
[INFO] removed path dependency wrapper_struct from sleepymurph/dmv
[INFO] removed path dependency testutil from sleepymurph/dmv
[INFO] finished frobbing sleepymurph/dmv
[INFO] frobbed toml for sleepymurph/dmv written to work/ex/beta-1.38-1/sources/1.37.0/gh/sleepymurph/dmv/Cargo.toml
[INFO] started frobbing sleepymurph/dmv
[INFO] removed path dependency disk_backed from sleepymurph/dmv
[INFO] removed path dependency human_readable from sleepymurph/dmv
[INFO] removed path dependency wrapper_struct from sleepymurph/dmv
[INFO] removed path dependency testutil from sleepymurph/dmv
[INFO] finished frobbing sleepymurph/dmv
[INFO] frobbed toml for sleepymurph/dmv written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sleepymurph/dmv/Cargo.toml
[INFO] crate sleepymurph/dmv 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 crates.io index
[INFO] [stderr] error: no matching package named `disk_backed` found
[INFO] [stderr] location searched: registry `https://github.com/rust-lang/crates.io-index`
[INFO] [stderr] required by package `dmv v0.1.0 (/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/sleepymurph/dmv)`
[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