[INFO] cloning repository Happy-Ferret/synapse
[INFO] running `"git" "clone" "--bare" "git://github.com/Happy-Ferret/synapse.git" "work/cache/sources/gh/Happy-Ferret/synapse"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/Happy-Ferret/synapse'...
[INFO] running `"git" "clone" "work/cache/sources/gh/Happy-Ferret/synapse" "work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/Happy-Ferret/synapse"`
[INFO] [stderr] Cloning into 'work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/Happy-Ferret/synapse'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Happy-Ferret/synapse" "work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/Happy-Ferret/synapse"`
[INFO] [stderr] Cloning into 'work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/Happy-Ferret/synapse'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ac92bb424c3d7d99905f4c0988c924001b688080
[INFO] sha for GitHub repo Happy-Ferret/synapse: ac92bb424c3d7d99905f4c0988c924001b688080
[INFO] validating manifest of Happy-Ferret/synapse 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 Happy-Ferret/synapse 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 Happy-Ferret/synapse
[INFO] removed workspace from Happy-Ferret/synapse
[INFO] removed path dependency rpc from Happy-Ferret/synapse
[INFO] finished frobbing Happy-Ferret/synapse
[INFO] frobbed toml for Happy-Ferret/synapse written to work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/Happy-Ferret/synapse/Cargo.toml
[INFO] started frobbing Happy-Ferret/synapse
[INFO] removed workspace from Happy-Ferret/synapse
[INFO] removed path dependency rpc from Happy-Ferret/synapse
[INFO] finished frobbing Happy-Ferret/synapse
[INFO] frobbed toml for Happy-Ferret/synapse written to work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/Happy-Ferret/synapse/Cargo.toml
[INFO] crate Happy-Ferret/synapse 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]     Updating crates.io index
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/Happy-Ferret/synapse/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" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Updating git repository `https://github.com/rust-num/num`
[INFO] [stderr] error: failed to select a version for the requirement `ring = "^0.11"`
[INFO] [stderr]   candidate versions found which didn't match: 0.14.6, 0.14.5, 0.14.4, ...
[INFO] [stderr]   location searched: crates.io index
[INFO] [stderr] required by package `synapse v0.1.0 (/mnt/big/crater/work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/Happy-Ferret/synapse)`
[ERROR] this task or one of its parent failed!
[ERROR] overridden task result to broken:yanked
[ERROR] caused by: crate Happy-Ferret/synapse depends on yanked crates
[ERROR]