[INFO] crate tendermint 0.1.4 is already in cache
[INFO] extracting crate tendermint 0.1.4 into work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/tendermint/0.1.4
[INFO] extracting crate tendermint 0.1.4 into work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/tendermint/0.1.4
[INFO] validating manifest of tendermint-0.1.4 on toolchain master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of tendermint-0.1.4 on toolchain try#7fea0229842e79db1159ea58ad9a653b288efee9
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing tendermint-0.1.4
[INFO] finished frobbing tendermint-0.1.4
[INFO] frobbed toml for tendermint-0.1.4 written to work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/tendermint/0.1.4/Cargo.toml
[INFO] started frobbing tendermint-0.1.4
[INFO] finished frobbing tendermint-0.1.4
[INFO] frobbed toml for tendermint-0.1.4 written to work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/tendermint/0.1.4/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr] error: failed to select a version for the requirement `subtle = "^0.7"`
[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 `curve25519-dalek v0.19.1`
[INFO] [stderr]     ... which is depended on by `x25519-dalek v0.3.0`
[INFO] [stderr]     ... which is depended on by `tendermint v0.1.4 (/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/tendermint/0.1.4)`
[ERROR] this task or one of its parent failed!
[ERROR] command `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` failed