[INFO] cloning repository polyfractal/quicksilver
[INFO] running `"git" "clone" "--bare" "git://github.com/polyfractal/quicksilver.git" "work/cache/sources/gh/polyfractal/quicksilver"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/polyfractal/quicksilver'...
[INFO] running `"git" "clone" "work/cache/sources/gh/polyfractal/quicksilver" "work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/polyfractal/quicksilver"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/polyfractal/quicksilver'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/polyfractal/quicksilver" "work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/polyfractal/quicksilver"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/polyfractal/quicksilver'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1120a58dd8d70d974c3d5ba9863649d9c5e1bdfd
[INFO] sha for GitHub repo polyfractal/quicksilver: 1120a58dd8d70d974c3d5ba9863649d9c5e1bdfd
[INFO] validating manifest of polyfractal/quicksilver on toolchain master#c0086b9e8972fef9fd4af24bae20d45021ed06c6
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[ERROR] this task or one of its parent failed!
[ERROR] overridden task result to build-fail:broken
[ERROR] caused by: invalid syntax in polyfractal/quicksilver's Cargo.toml
[ERROR] caused by: command `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "read-manifest" "--manifest-path" "Cargo.toml"` failed
[ERROR]