[INFO] cloning repository TomLingham/multistagger
[INFO] running `"git" "clone" "--bare" "git://github.com/TomLingham/multistagger.git" "work/cache/sources/gh/TomLingham/multistagger"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/TomLingham/multistagger'...
[INFO] running `"git" "clone" "work/cache/sources/gh/TomLingham/multistagger" "work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/TomLingham/multistagger"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/TomLingham/multistagger'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/TomLingham/multistagger" "work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/TomLingham/multistagger"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/TomLingham/multistagger'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 21c63e57522cd09a171e0293e008ea05a3a3ff1a
[INFO] sha for GitHub repo TomLingham/multistagger: 21c63e57522cd09a171e0293e008ea05a3a3ff1a
[INFO] validating manifest of TomLingham/multistagger on toolchain master#c0086b9e8972fef9fd4af24bae20d45021ed06c6
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of TomLingham/multistagger on toolchain try#290ac7b29f41ff9fa5232f9a1116ea71a3501063
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing TomLingham/multistagger
[INFO] removed path dependency rocker from TomLingham/multistagger
[INFO] finished frobbing TomLingham/multistagger
[INFO] frobbed toml for TomLingham/multistagger written to work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/TomLingham/multistagger/Cargo.toml
[INFO] started frobbing TomLingham/multistagger
[INFO] removed path dependency rocker from TomLingham/multistagger
[INFO] finished frobbing TomLingham/multistagger
[INFO] frobbed toml for TomLingham/multistagger written to work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/TomLingham/multistagger/Cargo.toml
[INFO] crate TomLingham/multistagger has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: no matching package named `rocker` found
[INFO] [stderr] location searched: registry `https://github.com/rust-lang/crates.io-index`
[INFO] [stderr] required by package `multistagger v0.1.0 (/mnt/big/crater/work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/TomLingham/multistagger)`
[ERROR] this task or one of its parent failed!
[ERROR] command `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` failed