[INFO] crate grammar-tech-macro 0.1.1 is already in cache
[INFO] extracting crate grammar-tech-macro 0.1.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/grammar-tech-macro/0.1.1
[INFO] extracting crate grammar-tech-macro 0.1.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/grammar-tech-macro/0.1.1
[INFO] validating manifest of grammar-tech-macro-0.1.1 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of grammar-tech-macro-0.1.1 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing grammar-tech-macro-0.1.1
[INFO] finished frobbing grammar-tech-macro-0.1.1
[INFO] frobbed toml for grammar-tech-macro-0.1.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/grammar-tech-macro/0.1.1/Cargo.toml
[INFO] started frobbing grammar-tech-macro-0.1.1
[INFO] finished frobbing grammar-tech-macro-0.1.1
[INFO] frobbed toml for grammar-tech-macro-0.1.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/grammar-tech-macro/0.1.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] error: no matching package named `grammar-tech` found
[INFO] [stderr] location searched: registry `https://github.com/rust-lang/crates.io-index`
[INFO] [stderr] required by package `grammar-tech-macro v0.1.1 (/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/grammar-tech-macro/0.1.1)`
[ERROR] this task or one of its parent failed!
[ERROR] command `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` failed