[INFO] updating cached repository Byron/termbook
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Byron/termbook
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Byron/termbook" "work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/Byron/termbook"`
[INFO] [stderr] Cloning into 'work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/Byron/termbook'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Byron/termbook" "work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/Byron/termbook"`
[INFO] [stderr] Cloning into 'work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/Byron/termbook'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8a10156883ca0889fe888b4ea04f2cafdb6dc9c0
[INFO] sha for GitHub repo Byron/termbook: 8a10156883ca0889fe888b4ea04f2cafdb6dc9c0
[INFO] validating manifest of Byron/termbook on toolchain master#5f9c0448dde167128d668da4555879f64e56af1d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Byron/termbook on toolchain try#8ec8125bea94852768b56958f05da47666c21ab0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Byron/termbook
[INFO] removed workspace from Byron/termbook
[INFO] removed path dependency termbook from Byron/termbook
[INFO] finished frobbing Byron/termbook
[INFO] frobbed toml for Byron/termbook written to work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/Byron/termbook/Cargo.toml
[INFO] started frobbing Byron/termbook
[INFO] removed workspace from Byron/termbook
[INFO] removed path dependency termbook from Byron/termbook
[INFO] finished frobbing Byron/termbook
[INFO] frobbed toml for Byron/termbook written to work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/Byron/termbook/Cargo.toml
[INFO] crate Byron/termbook already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: failed to select a version for the requirement `termbook = "^1.4.2"`
[INFO] [stderr]   candidate versions found which didn't match: 1.4.1, 1.4.0, 1.3.0, ...
[INFO] [stderr]   location searched: crates.io index
[INFO] [stderr] required by package `termbook-cli v1.4.0 (/mnt/big/crater/work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/Byron/termbook)`
[ERROR] this task or one of its parent failed!
[ERROR] command `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` failed