[INFO] crate monotone-cli 0.4.0 is already in cache
[INFO] extracting crate monotone-cli 0.4.0 into work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/reg/monotone-cli/0.4.0
[INFO] extracting crate monotone-cli 0.4.0 into work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/reg/monotone-cli/0.4.0
[INFO] validating manifest of monotone-cli-0.4.0 on toolchain master#c43d03a19f326f4a323569328cc501e86eb6d22e
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of monotone-cli-0.4.0 on toolchain try#75eff020d0923c035c2fe220db4a0465cd847048
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing monotone-cli-0.4.0
[INFO] removed path dependency monotone from monotone-cli-0.4.0
[INFO] finished frobbing monotone-cli-0.4.0
[INFO] frobbed toml for monotone-cli-0.4.0 written to work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/reg/monotone-cli/0.4.0/Cargo.toml
[INFO] started frobbing monotone-cli-0.4.0
[INFO] removed path dependency monotone from monotone-cli-0.4.0
[INFO] finished frobbing monotone-cli-0.4.0
[INFO] frobbed toml for monotone-cli-0.4.0 written to work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/reg/monotone-cli/0.4.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr] error: failed to select a version for the requirement `ring = "^0.6"`
[INFO] [stderr]   candidate versions found which didn't match: 0.16.9, 0.16.7, 0.16.6, ...
[INFO] [stderr]   location searched: crates.io index
[INFO] [stderr] required by package `rusoto v0.23.0`
[INFO] [stderr]     ... which is depended on by `monotone-cli v0.4.0 (/mnt/big/crater/work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/reg/monotone-cli/0.4.0)`
[ERROR] this task or one of its parent failed!
[ERROR] overridden task result to broken:yanked
[ERROR] caused by: crate monotone-cli-0.4.0 depends on yanked crates
[ERROR]