[INFO] crate keybob 0.3.1 is already in cache
[INFO] extracting crate keybob 0.3.1 into work/ex/pr-58592/sources/master#f66e4697ae286985ddefc53c3a047614568458bb/reg/keybob/0.3.1
[INFO] extracting crate keybob 0.3.1 into work/ex/pr-58592/sources/try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a/reg/keybob/0.3.1
[INFO] validating manifest of keybob-0.3.1 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 keybob-0.3.1 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 keybob-0.3.1
[INFO] finished frobbing keybob-0.3.1
[INFO] frobbed toml for keybob-0.3.1 written to work/ex/pr-58592/sources/master#f66e4697ae286985ddefc53c3a047614568458bb/reg/keybob/0.3.1/Cargo.toml
[INFO] started frobbing keybob-0.3.1
[INFO] finished frobbing keybob-0.3.1
[INFO] frobbed toml for keybob-0.3.1 written to work/ex/pr-58592/sources/try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a/reg/keybob/0.3.1/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 `subtle = "^0.3"`
[INFO] [stderr]   candidate versions found which didn't match: 2.0.0, 1.0.0
[INFO] [stderr]   location searched: crates.io index
[INFO] [stderr] required by package `miscreant v0.4.0-beta1`
[INFO] [stderr]     ... which is depended on by `keybob v0.3.1 (/mnt/big/crater/work/ex/pr-58592/sources/master#f66e4697ae286985ddefc53c3a047614568458bb/reg/keybob/0.3.1)`
[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