[INFO] updating cached repository mimblewimble/grin-wallet
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mimblewimble/grin-wallet
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mimblewimble/grin-wallet" "work/ex/beta-1.38-1/sources/1.37.0/gh/mimblewimble/grin-wallet"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/mimblewimble/grin-wallet'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mimblewimble/grin-wallet" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mimblewimble/grin-wallet"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mimblewimble/grin-wallet'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c7a00478aa86e723d67deec8d4e20ed77e2703c7
[INFO] sha for GitHub repo mimblewimble/grin-wallet: c7a00478aa86e723d67deec8d4e20ed77e2703c7
[INFO] validating manifest of mimblewimble/grin-wallet 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 mimblewimble/grin-wallet 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 mimblewimble/grin-wallet
[INFO] removed workspace from mimblewimble/grin-wallet
[INFO] removed path dependency grin_wallet_api from mimblewimble/grin-wallet
[INFO] removed path dependency grin_wallet_config from mimblewimble/grin-wallet
[INFO] removed path dependency grin_wallet_controller from mimblewimble/grin-wallet
[INFO] removed path dependency grin_wallet_impls from mimblewimble/grin-wallet
[INFO] removed path dependency grin_wallet_libwallet from mimblewimble/grin-wallet
[INFO] removed path dependency grin_wallet_util from mimblewimble/grin-wallet
[INFO] finished frobbing mimblewimble/grin-wallet
[INFO] frobbed toml for mimblewimble/grin-wallet written to work/ex/beta-1.38-1/sources/1.37.0/gh/mimblewimble/grin-wallet/Cargo.toml
[INFO] started frobbing mimblewimble/grin-wallet
[INFO] removed workspace from mimblewimble/grin-wallet
[INFO] removed path dependency grin_wallet_api from mimblewimble/grin-wallet
[INFO] removed path dependency grin_wallet_config from mimblewimble/grin-wallet
[INFO] removed path dependency grin_wallet_controller from mimblewimble/grin-wallet
[INFO] removed path dependency grin_wallet_impls from mimblewimble/grin-wallet
[INFO] removed path dependency grin_wallet_libwallet from mimblewimble/grin-wallet
[INFO] removed path dependency grin_wallet_util from mimblewimble/grin-wallet
[INFO] finished frobbing mimblewimble/grin-wallet
[INFO] frobbed toml for mimblewimble/grin-wallet written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mimblewimble/grin-wallet/Cargo.toml
[INFO] crate mimblewimble/grin-wallet 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: failed to select a version for the requirement `grin_wallet_api = "^1.1.1-beta.1"`
[INFO] [stderr]   candidate versions found which didn't match: 2.0.0, 1.1.0
[INFO] [stderr]   location searched: crates.io index
[INFO] [stderr] required by package `grin_wallet v1.1.1-beta.1 (/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/mimblewimble/grin-wallet)`
[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