[INFO] updating cached repository erikjohnston/mxfedtestbot
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/erikjohnston/mxfedtestbot
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/erikjohnston/mxfedtestbot" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/erikjohnston/mxfedtestbot"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/erikjohnston/mxfedtestbot'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/erikjohnston/mxfedtestbot" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/erikjohnston/mxfedtestbot"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/erikjohnston/mxfedtestbot'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 91cb08df6db1c7c27bf3b8afd6bfb8592c3fca5b
[INFO] sha for GitHub repo erikjohnston/mxfedtestbot: 91cb08df6db1c7c27bf3b8afd6bfb8592c3fca5b
[INFO] validating manifest of erikjohnston/mxfedtestbot on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of erikjohnston/mxfedtestbot on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing erikjohnston/mxfedtestbot
[INFO] finished frobbing erikjohnston/mxfedtestbot
[INFO] frobbed toml for erikjohnston/mxfedtestbot written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/erikjohnston/mxfedtestbot/Cargo.toml
[INFO] started frobbing erikjohnston/mxfedtestbot
[INFO] finished frobbing erikjohnston/mxfedtestbot
[INFO] frobbed toml for erikjohnston/mxfedtestbot written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/erikjohnston/mxfedtestbot/Cargo.toml
[INFO] crate erikjohnston/mxfedtestbot already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/erikjohnston/mxfedtestbot/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Updating git repository `https://github.com/erikjohnston/mxfedtest.git`
[INFO] [stderr] error: failed to select a version for `toml`.
[INFO] [stderr]     ... required by package `mxfedtest v0.1.0 (https://github.com/erikjohnston/mxfedtest.git#c1f7f259)`
[INFO] [stderr]     ... which is depended on by `fedtestbot v0.1.0 (/mnt/big/crater/work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/erikjohnston/mxfedtestbot)`
[INFO] [stderr] versions that meet the requirements `^0.4.0` are: 0.4.10, 0.4.9, 0.4.8, 0.4.7, 0.4.6, 0.4.5, 0.4.4, 0.4.3, 0.4.2, 0.4.1, 0.4.0
[INFO] [stderr] 
[INFO] [stderr] the package `mxfedtest` 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/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` failed