[INFO] fetching crate pathbuster 0.5.5...
[INFO] building pathbuster-0.5.5 against master#44f415c1d617ebc7b931a243b7b321ef8a6ca47c for pr-142134-abi-ast-error
[INFO] extracting crate pathbuster 0.5.5 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate pathbuster 0.5.5 on toolchain 44f415c1d617ebc7b931a243b7b321ef8a6ca47c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pathbuster 0.5.5
[INFO] finished tweaking crates.io crate pathbuster 0.5.5
[INFO] tweaked toml for crates.io crate pathbuster 0.5.5 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate pathbuster 0.5.5 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" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: no matching package named `differ` found
[INFO] [stderr] location searched: crates.io index
[INFO] [stderr] required by package `pathbuster v0.5.5 (/workspace/builds/worker-6-tc1/source)`


command failed: exit status: 101

    Updating crates.io index
error: no matching package named `differ` found
location searched: crates.io index
required by package `pathbuster v0.5.5 (/workspace/builds/worker-6-tc1/source)`