[INFO] crate burst-pool 0.5.1 is already in cache
[INFO] extracting crate burst-pool 0.5.1 into work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/reg/burst-pool/0.5.1
[INFO] extracting crate burst-pool 0.5.1 into work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/reg/burst-pool/0.5.1
[INFO] validating manifest of burst-pool-0.5.1 on toolchain master#452087b4bf18cece2d52d7cd8c9147195e5404bf
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of burst-pool-0.5.1 on toolchain try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing burst-pool-0.5.1
[INFO] finished frobbing burst-pool-0.5.1
[INFO] frobbed toml for burst-pool-0.5.1 written to work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/reg/burst-pool/0.5.1/Cargo.toml
[INFO] started frobbing burst-pool-0.5.1
[INFO] finished frobbing burst-pool-0.5.1
[INFO] frobbed toml for burst-pool-0.5.1 written to work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/reg/burst-pool/0.5.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr] error: failed to select a version for the requirement `spmc = "^0.2.2"`
[INFO] [stderr]   candidate versions found which didn't match: 0.3.0
[INFO] [stderr]   location searched: crates.io index
[INFO] [stderr] required by package `burst-pool v0.5.1 (/mnt/big/crater/work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/reg/burst-pool/0.5.1)`
[ERROR] this task or one of its parent failed!
[ERROR] overridden task result to broken:yanked
[ERROR] caused by: crate burst-pool-0.5.1 depends on yanked crates
[ERROR]