[INFO] crate rusoto 0.24.1 is already in cache [INFO] extracting crate rusoto 0.24.1 into work/ex/pr-58592/sources/master#f66e4697ae286985ddefc53c3a047614568458bb/reg/rusoto/0.24.1 [INFO] extracting crate rusoto 0.24.1 into work/ex/pr-58592/sources/try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a/reg/rusoto/0.24.1 [INFO] validating manifest of rusoto-0.24.1 on toolchain master#f66e4697ae286985ddefc53c3a047614568458bb [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+f66e4697ae286985ddefc53c3a047614568458bb-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of rusoto-0.24.1 on toolchain try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c3b22200e6f5b70eb1f99ae6944d989ae17a458a-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing rusoto-0.24.1 [INFO] finished frobbing rusoto-0.24.1 [INFO] frobbed toml for rusoto-0.24.1 written to work/ex/pr-58592/sources/master#f66e4697ae286985ddefc53c3a047614568458bb/reg/rusoto/0.24.1/Cargo.toml [INFO] started frobbing rusoto-0.24.1 [INFO] finished frobbing rusoto-0.24.1 [INFO] frobbed toml for rusoto-0.24.1 written to work/ex/pr-58592/sources/try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a/reg/rusoto/0.24.1/Cargo.toml [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+f66e4697ae286985ddefc53c3a047614568458bb-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] [stderr] error: failed to select a version for the requirement `ring = "^0.12"` [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 `rusoto v0.24.1 (/mnt/big/crater/work/ex/pr-58592/sources/master#f66e4697ae286985ddefc53c3a047614568458bb/reg/rusoto/0.24.1)` [ERROR] this task or one of its parent failed! [ERROR] command `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+f66e4697ae286985ddefc53c3a047614568458bb-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` failed