[INFO] cloning repository maochongxin/my_os
[INFO] running `"git" "clone" "--bare" "git://github.com/maochongxin/my_os.git" "work/cache/sources/gh/maochongxin/my_os"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/maochongxin/my_os'...
[INFO] running `"git" "clone" "work/cache/sources/gh/maochongxin/my_os" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/maochongxin/my_os"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/maochongxin/my_os'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/maochongxin/my_os" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/maochongxin/my_os"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/maochongxin/my_os'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] dec7c49822b47004deb5b69ee836124282d155a0
[INFO] sha for GitHub repo maochongxin/my_os: dec7c49822b47004deb5b69ee836124282d155a0
[INFO] validating manifest of maochongxin/my_os 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 maochongxin/my_os 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 maochongxin/my_os
[INFO] removed path dependency bbl from maochongxin/my_os
[INFO] finished frobbing maochongxin/my_os
[INFO] frobbed toml for maochongxin/my_os written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/maochongxin/my_os/Cargo.toml
[INFO] started frobbing maochongxin/my_os
[INFO] removed path dependency bbl from maochongxin/my_os
[INFO] finished frobbing maochongxin/my_os
[INFO] frobbed toml for maochongxin/my_os written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/maochongxin/my_os/Cargo.toml
[INFO] crate maochongxin/my_os 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]     Updating git repository `https://github.com/xy-plus/buddy-allocator`
[INFO] [stderr]     Updating git repository `https://github.com/xy-plus/device_tree-rs`
[INFO] [stderr]     Updating git repository `https://github.com/xy-plus/riscv`
[INFO] [stderr] error: no matching package named `bbl` found
[INFO] [stderr] location searched: registry `https://github.com/rust-lang/crates.io-index`
[INFO] [stderr] required by package `mcx_os v0.1.0 (/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/maochongxin/my_os)`
[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