[INFO] cloning repository https://github.com/chw683/chw-bifrost
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/chw683/chw-bifrost" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchw683%2Fchw-bifrost", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchw683%2Fchw-bifrost'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f414e44657f182e9c78152aab6b37f328bbbc05a
[INFO] checking chw683/chw-bifrost against master#8f359beca4e58bc3ae795a666301a8f47023044c for pr-121557
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchw683%2Fchw-bifrost" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/chw683/chw-bifrost on toolchain 8f359beca4e58bc3ae795a666301a8f47023044c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8f359beca4e58bc3ae795a666301a8f47023044c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/chw683/chw-bifrost
[INFO] finished tweaking git repo https://github.com/chw683/chw-bifrost
[INFO] tweaked toml for git repo https://github.com/chw683/chw-bifrost written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/chw683/chw-bifrost already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8f359beca4e58bc3ae795a666301a8f47023044c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Updating git repository `https://github.com/paritytech/cumulus`
[INFO] [stderr]     Updating git repository `https://github.com/paritytech/polkadot`
[INFO] [stderr]     Updating git repository `https://github.com/bifrost-finance/rust-eos`
[INFO] [stderr]     Updating git repository `https://github.com/xlc/lite-json`
[INFO] [stderr]     Updating git repository `https://github.com/encointer/substrate-fixed`
[INFO] [stderr]     Updating git repository `https://github.com/paritytech/substrate.git`
[INFO] [stderr] error: failed to select a version for the requirement `sp-blockchain = "*"` (locked to 2.0.0)
[INFO] [stderr] candidate versions found which didn't match: 4.0.0-dev
[INFO] [stderr] location searched: Git repository https://github.com/paritytech/substrate.git?branch=master
[INFO] [stderr] required by package `cumulus-collator v0.1.0 (https://github.com/paritytech/cumulus?branch=master#ea10fa82)`
[INFO] [stderr]     ... which satisfies git dependency `cumulus-collator` (locked to 0.1.0) of package `node-cli v0.6.0 (/workspace/builds/worker-4-tc1/source/bin/node/cli)`
[INFO] [stderr] if you are looking for the prerelease package it needs to be specified explicitly
[INFO] [stderr]     sp-blockchain = { version = "4.0.0-dev" }
[ERROR] this task or one of its parent failed!
[ERROR] command failed: exit status: 101
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.