[INFO] updating cached repository tesaguri/iba_kyuko_bot
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/tesaguri/iba_kyuko_bot
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/tesaguri/iba_kyuko_bot" "work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/tesaguri/iba_kyuko_bot"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/tesaguri/iba_kyuko_bot'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/tesaguri/iba_kyuko_bot" "work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/tesaguri/iba_kyuko_bot"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/tesaguri/iba_kyuko_bot'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2ae9163e20905570e56057efd164e75e2e5ef8b2
[INFO] sha for GitHub repo tesaguri/iba_kyuko_bot: 2ae9163e20905570e56057efd164e75e2e5ef8b2
[INFO] validating manifest of tesaguri/iba_kyuko_bot on toolchain master#e305df1846a6d985315917ae0c81b74af8b4e641
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of tesaguri/iba_kyuko_bot on toolchain try#99a7498759a22b5684caf798a98b7e90ad9d2443
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing tesaguri/iba_kyuko_bot
[INFO] finished frobbing tesaguri/iba_kyuko_bot
[INFO] frobbed toml for tesaguri/iba_kyuko_bot written to work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/tesaguri/iba_kyuko_bot/Cargo.toml
[INFO] started frobbing tesaguri/iba_kyuko_bot
[INFO] finished frobbing tesaguri/iba_kyuko_bot
[INFO] frobbed toml for tesaguri/iba_kyuko_bot written to work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/tesaguri/iba_kyuko_bot/Cargo.toml
[INFO] crate tesaguri/iba_kyuko_bot already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: failed to select a version for the requirement `ring = "^0.6"`
[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 `egg-mode v0.8.0`
[INFO] [stderr]     ... which is depended on by `iba_kyuko_bot v0.0.0 (/mnt/big/crater/work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/tesaguri/iba_kyuko_bot)`
[ERROR] this task or one of its parent failed!
[ERROR] command `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` failed