[INFO] cloning repository kimond/oxybar
[INFO] running `"git" "clone" "--bare" "git://github.com/kimond/oxybar.git" "work/cache/sources/gh/kimond/oxybar"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/kimond/oxybar'...
[INFO] running `"git" "clone" "work/cache/sources/gh/kimond/oxybar" "work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/kimond/oxybar"`
[INFO] [stderr] Cloning into 'work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/kimond/oxybar'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/kimond/oxybar" "work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/kimond/oxybar"`
[INFO] [stderr] Cloning into 'work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/kimond/oxybar'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 67e7ff63c20954616e754305ad765d18d45df8cc
[INFO] sha for GitHub repo kimond/oxybar: 67e7ff63c20954616e754305ad765d18d45df8cc
[INFO] validating manifest of kimond/oxybar on toolchain master#9f06855064ed06a50c496577b21ca50f92a2e67d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of kimond/oxybar on toolchain try#d3301713b54af69ca9de941a8c6b0d8287dbd6df
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing kimond/oxybar
[INFO] finished frobbing kimond/oxybar
[INFO] frobbed toml for kimond/oxybar written to work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/kimond/oxybar/Cargo.toml
[INFO] started frobbing kimond/oxybar
[INFO] finished frobbing kimond/oxybar
[INFO] frobbed toml for kimond/oxybar written to work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/kimond/oxybar/Cargo.toml
[INFO] crate kimond/oxybar already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr] error: checksum for `xcb-util v0.2.0` changed between lock files
[INFO] [stderr] 
[INFO] [stderr] this could be indicative of a few possible errors:
[INFO] [stderr] 
[INFO] [stderr]     * the lock file is corrupt
[INFO] [stderr]     * a replacement source in use (e.g., a mirror) returned a different checksum
[INFO] [stderr]     * the source itself may be corrupt in one way or another
[INFO] [stderr] 
[INFO] [stderr] unable to verify that `xcb-util v0.2.0` is the same as when the lockfile was generated
[INFO] [stderr] 
[ERROR] this task or one of its parent failed!
[ERROR] command `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` failed