[INFO] fetching crate unwalk-gz 0.2.0-beta1...
[INFO] extracting crate unwalk-gz 0.2.0-beta1 into work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/reg/unwalk-gz/0.2.0-beta1
[INFO] extracting crate unwalk-gz 0.2.0-beta1 into work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/reg/unwalk-gz/0.2.0-beta1
[INFO] validating manifest of unwalk-gz-0.2.0-beta1 on toolchain master#c0086b9e8972fef9fd4af24bae20d45021ed06c6
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of unwalk-gz-0.2.0-beta1 on toolchain try#290ac7b29f41ff9fa5232f9a1116ea71a3501063
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing unwalk-gz-0.2.0-beta1
[INFO] finished frobbing unwalk-gz-0.2.0-beta1
[INFO] frobbed toml for unwalk-gz-0.2.0-beta1 written to work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/reg/unwalk-gz/0.2.0-beta1/Cargo.toml
[INFO] started frobbing unwalk-gz-0.2.0-beta1
[INFO] finished frobbing unwalk-gz-0.2.0-beta1
[INFO] frobbed toml for unwalk-gz-0.2.0-beta1 written to work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/reg/unwalk-gz/0.2.0-beta1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr] error: failed to select a version for the requirement `tempfile = "= 3.0.0"`
[INFO] [stderr]   candidate versions found which didn't match: 3.0.7, 3.0.6, 3.0.5, ...
[INFO] [stderr]   location searched: crates.io index
[INFO] [stderr] required by package `unwalk-gz v0.2.0-beta1 (/mnt/big/crater/work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/reg/unwalk-gz/0.2.0-beta1)`
[ERROR] this task or one of its parent failed!
[ERROR] command `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` failed