[INFO] cloning repository klardotsh/souls
[INFO] running `"git" "clone" "--bare" "git://github.com/klardotsh/souls.git" "work/cache/sources/gh/klardotsh/souls"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/klardotsh/souls'...
[INFO] running `"git" "clone" "work/cache/sources/gh/klardotsh/souls" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/klardotsh/souls"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/klardotsh/souls'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/klardotsh/souls" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/klardotsh/souls"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/klardotsh/souls'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7778c262175d1dba5a2a979bd8ab36e66c7fb8de
[INFO] sha for GitHub repo klardotsh/souls: 7778c262175d1dba5a2a979bd8ab36e66c7fb8de
[INFO] validating manifest of klardotsh/souls on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of klardotsh/souls on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing klardotsh/souls
[INFO] finished frobbing klardotsh/souls
[INFO] frobbed toml for klardotsh/souls written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/klardotsh/souls/Cargo.toml
[INFO] started frobbing klardotsh/souls
[INFO] finished frobbing klardotsh/souls
[INFO] frobbed toml for klardotsh/souls written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/klardotsh/souls/Cargo.toml
[INFO] crate klardotsh/souls already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: failed to select a version for `toml`.
[INFO] [stderr]     ... required by package `souls v0.1.0 (/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/klardotsh/souls)`
[INFO] [stderr] versions that meet the requirements `= 0.3.1` are: 0.3.1
[INFO] [stderr] 
[INFO] [stderr] the package `souls` depends on `toml`, with features: `serde` but `toml` does not have these features.
[INFO] [stderr]  It has a required dependency with that name, but only optional dependencies can be used as features.
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `toml` which could resolve this conflict
[ERROR] this task or one of its parent failed!
[ERROR] command `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` failed