[INFO] cloning repository seanchen1991/rust_echo
[INFO] running `"git" "clone" "--bare" "git://github.com/seanchen1991/rust_echo.git" "work/cache/sources/gh/seanchen1991/rust_echo"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/seanchen1991/rust_echo'...
[INFO] running `"git" "clone" "work/cache/sources/gh/seanchen1991/rust_echo" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/seanchen1991/rust_echo"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/seanchen1991/rust_echo'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/seanchen1991/rust_echo" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/seanchen1991/rust_echo"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/seanchen1991/rust_echo'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 52041058ef9c4de0ef749cb2b0dae82f5e5d7a39
[INFO] sha for GitHub repo seanchen1991/rust_echo: 52041058ef9c4de0ef749cb2b0dae82f5e5d7a39
[INFO] validating manifest of seanchen1991/rust_echo 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 seanchen1991/rust_echo 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 seanchen1991/rust_echo
[INFO] finished frobbing seanchen1991/rust_echo
[INFO] frobbed toml for seanchen1991/rust_echo written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/seanchen1991/rust_echo/Cargo.toml
[INFO] started frobbing seanchen1991/rust_echo
[INFO] finished frobbing seanchen1991/rust_echo
[INFO] frobbed toml for seanchen1991/rust_echo written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/seanchen1991/rust_echo/Cargo.toml
[INFO] crate seanchen1991/rust_echo 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 git repository `https://github.com/alexcrichton/futures-rs`
[INFO] [stderr] error: no matching package named `futures` found
[INFO] [stderr] location searched: https://github.com/alexcrichton/futures-rs
[INFO] [stderr] required by package `rust_echo v0.1.0 (/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/seanchen1991/rust_echo)`
[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