[INFO] cloning repository cmyr/rust-buffer-bench
[INFO] running `"git" "clone" "--bare" "git://github.com/cmyr/rust-buffer-bench.git" "work/cache/sources/gh/cmyr/rust-buffer-bench"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/cmyr/rust-buffer-bench'...
[INFO] running `"git" "clone" "work/cache/sources/gh/cmyr/rust-buffer-bench" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/cmyr/rust-buffer-bench"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/cmyr/rust-buffer-bench'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/cmyr/rust-buffer-bench" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/cmyr/rust-buffer-bench"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/cmyr/rust-buffer-bench'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 662828129e0944ba9946bdab62c3683ddfe06275
[INFO] sha for GitHub repo cmyr/rust-buffer-bench: 662828129e0944ba9946bdab62c3683ddfe06275
[INFO] validating manifest of cmyr/rust-buffer-bench on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of cmyr/rust-buffer-bench on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing cmyr/rust-buffer-bench
[INFO] removed path dependency xi_rope_master from cmyr/rust-buffer-bench
[INFO] removed path dependency xi_rope_rc from cmyr/rust-buffer-bench
[INFO] finished frobbing cmyr/rust-buffer-bench
[INFO] frobbed toml for cmyr/rust-buffer-bench written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/cmyr/rust-buffer-bench/Cargo.toml
[INFO] started frobbing cmyr/rust-buffer-bench
[INFO] removed path dependency xi_rope_master from cmyr/rust-buffer-bench
[INFO] removed path dependency xi_rope_rc from cmyr/rust-buffer-bench
[INFO] finished frobbing cmyr/rust-buffer-bench
[INFO] frobbed toml for cmyr/rust-buffer-bench written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/cmyr/rust-buffer-bench/Cargo.toml
[INFO] crate cmyr/rust-buffer-bench already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: no matching package named `xi_rope_master` found
[INFO] [stderr] location searched: registry `https://github.com/rust-lang/crates.io-index`
[INFO] [stderr] required by package `buffer-bench v0.1.0 (/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/cmyr/rust-buffer-bench)`
[ERROR] this task or one of its parent failed!
[ERROR] command `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` failed