[INFO] crate rusoto 0.24.1 is already in cache
[INFO] extracting crate rusoto 0.24.1 into work/ex/clippy-test-run/sources/stable/reg/rusoto/0.24.1
[INFO] extracting crate rusoto 0.24.1 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/rusoto/0.24.1
[INFO] validating manifest of rusoto-0.24.1 on toolchain stable
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of rusoto-0.24.1 on toolchain stable+rustflags=-Dclippy::into_iter_on_array
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "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/clippy-test-run/sources/stable/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/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/rusoto/0.24.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "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: 0.14.3, 0.14.2, 0.14.1, ...
[INFO] [stderr]   location searched: crates.io index
[INFO] [stderr] required by package `rusoto v0.24.1 (/mnt/big/crater/work/ex/clippy-test-run/sources/stable/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" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` failed