[INFO] cloning repository futile/grow
[INFO] running `"git" "clone" "--bare" "git://github.com/futile/grow.git" "work/cache/sources/gh/futile/grow"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/futile/grow'...
[INFO] running `"git" "clone" "work/cache/sources/gh/futile/grow" "work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/futile/grow"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/futile/grow'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/futile/grow" "work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/futile/grow"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/futile/grow'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2b814064ff300c2d31d1c7716384ba3fe1378b14
[INFO] sha for GitHub repo futile/grow: 2b814064ff300c2d31d1c7716384ba3fe1378b14
[INFO] validating manifest of futile/grow on toolchain master#c0086b9e8972fef9fd4af24bae20d45021ed06c6
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of futile/grow on toolchain try#290ac7b29f41ff9fa5232f9a1116ea71a3501063
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing futile/grow
[INFO] finished frobbing futile/grow
[INFO] frobbed toml for futile/grow written to work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/futile/grow/Cargo.toml
[INFO] started frobbing futile/grow
[INFO] finished frobbing futile/grow
[INFO] frobbed toml for futile/grow written to work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/futile/grow/Cargo.toml
[INFO] crate futile/grow has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: failed to load source for a dependency on `gl_generator`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   Unable to update http://github.com/bjz/gl-rs#31f3ef8b
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to update submodule `src/khronos_api/api`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   object not found - no match for id (26330994c92f93330adef22cf0562a2700256689); class=Odb (9); code=NotFound (-3)
[ERROR] this task or one of its parent failed!
[ERROR] command `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` failed