[INFO] updating cached repository silica-rs/silica-demo
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/silica-rs/silica-demo
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/silica-rs/silica-demo" "work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/silica-rs/silica-demo"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/silica-rs/silica-demo'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/silica-rs/silica-demo" "work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/silica-rs/silica-demo"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/silica-rs/silica-demo'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] bf9b3e6dd03fce7f860f97281a53d0e9d7578fda
[INFO] sha for GitHub repo silica-rs/silica-demo: bf9b3e6dd03fce7f860f97281a53d0e9d7578fda
[INFO] validating manifest of silica-rs/silica-demo on toolchain master#0f88167f89fffe321590c5148f21b7d51d44388d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of silica-rs/silica-demo on toolchain try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing silica-rs/silica-demo
[INFO] removed path dependency silica from silica-rs/silica-demo
[INFO] removed path dependency silica-arduino-mega2560 from silica-rs/silica-demo
[INFO] removed path dependency silica-arduino-uno from silica-rs/silica-demo
[INFO] removed path dependency silica-olimex-p207 from silica-rs/silica-demo
[INFO] finished frobbing silica-rs/silica-demo
[INFO] frobbed toml for silica-rs/silica-demo written to work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/silica-rs/silica-demo/Cargo.toml
[INFO] started frobbing silica-rs/silica-demo
[INFO] removed path dependency silica from silica-rs/silica-demo
[INFO] removed path dependency silica-arduino-mega2560 from silica-rs/silica-demo
[INFO] removed path dependency silica-arduino-uno from silica-rs/silica-demo
[INFO] removed path dependency silica-olimex-p207 from silica-rs/silica-demo
[INFO] finished frobbing silica-rs/silica-demo
[INFO] frobbed toml for silica-rs/silica-demo written to work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/silica-rs/silica-demo/Cargo.toml
[INFO] crate silica-rs/silica-demo already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: no matching package named `silica-arduino-mega2560` found
[INFO] [stderr] location searched: registry `https://github.com/rust-lang/crates.io-index`
[INFO] [stderr] required by package `silica-demo v0.0.1 (/mnt/big/crater/work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/silica-rs/silica-demo)`
[ERROR] this task or one of its parent failed!
[ERROR] command `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` failed