[INFO] updating cached repository pepijnd/picross-solver
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/pepijnd/picross-solver
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/pepijnd/picross-solver" "work/ex/beta-1.38-1/sources/1.37.0/gh/pepijnd/picross-solver"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/pepijnd/picross-solver'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/pepijnd/picross-solver" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/pepijnd/picross-solver"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/pepijnd/picross-solver'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d300c1d9bf46ba1d544a532e78ffd00ff35ac7fa
[INFO] sha for GitHub repo pepijnd/picross-solver: d300c1d9bf46ba1d544a532e78ffd00ff35ac7fa
[INFO] validating manifest of pepijnd/picross-solver 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 pepijnd/picross-solver 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 pepijnd/picross-solver
[INFO] finished frobbing pepijnd/picross-solver
[INFO] frobbed toml for pepijnd/picross-solver written to work/ex/beta-1.38-1/sources/1.37.0/gh/pepijnd/picross-solver/Cargo.toml
[INFO] started frobbing pepijnd/picross-solver
[INFO] finished frobbing pepijnd/picross-solver
[INFO] frobbed toml for pepijnd/picross-solver written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/pepijnd/picross-solver/Cargo.toml
[INFO] crate pepijnd/picross-solver already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: failed to parse lock file at: /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/pepijnd/picross-solver/Cargo.lock
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   could not parse input as TOML
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   unexpected character found: `<` at line 4
[ERROR] this task or one of its parent failed!
[ERROR] command `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` failed