[INFO] updating cached repository chklauser/beachhead-companion
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/chklauser/beachhead-companion
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/chklauser/beachhead-companion" "work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/chklauser/beachhead-companion"`
[INFO] [stderr] Cloning into 'work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/chklauser/beachhead-companion'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/chklauser/beachhead-companion" "work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/chklauser/beachhead-companion"`
[INFO] [stderr] Cloning into 'work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/chklauser/beachhead-companion'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ece14ef968c10d64d89a40da94ece7aed972c9bb
[INFO] sha for GitHub repo chklauser/beachhead-companion: ece14ef968c10d64d89a40da94ece7aed972c9bb
[INFO] validating manifest of chklauser/beachhead-companion 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 chklauser/beachhead-companion 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 chklauser/beachhead-companion
[INFO] finished frobbing chklauser/beachhead-companion
[INFO] frobbed toml for chklauser/beachhead-companion written to work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/chklauser/beachhead-companion/Cargo.toml
[INFO] started frobbing chklauser/beachhead-companion
[INFO] finished frobbing chklauser/beachhead-companion
[INFO] frobbed toml for chklauser/beachhead-companion written to work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/chklauser/beachhead-companion/Cargo.toml
[INFO] crate chklauser/beachhead-companion 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] error: failed to select a version for `url`.
[INFO] [stderr]     ... required by package `beachhead-companion v0.1.0 (/mnt/big/crater/work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/chklauser/beachhead-companion)`
[INFO] [stderr] versions that meet the requirements `= 0.5.9` are: 0.5.9
[INFO] [stderr] 
[INFO] [stderr] the package `beachhead-companion` depends on `url`, with features: `rustc-serialize` but `url` 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 `url` which could resolve this conflict
[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