[INFO] updating cached repository cjm00/dedup
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/cjm00/dedup
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/cjm00/dedup" "work/ex/pr-61753/sources/master#8e948df707ea8a3c88c65bf2ffdcb2f1cf5491be/gh/cjm00/dedup"`
[INFO] [stderr] Cloning into 'work/ex/pr-61753/sources/master#8e948df707ea8a3c88c65bf2ffdcb2f1cf5491be/gh/cjm00/dedup'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/cjm00/dedup" "work/ex/pr-61753/sources/try#af22dfc7f56a5057c6b6120a65c74e7b6c1530af/gh/cjm00/dedup"`
[INFO] [stderr] Cloning into 'work/ex/pr-61753/sources/try#af22dfc7f56a5057c6b6120a65c74e7b6c1530af/gh/cjm00/dedup'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4cf1228cb85a2f62253dce045e4c68621b4052b2
[INFO] sha for GitHub repo cjm00/dedup: 4cf1228cb85a2f62253dce045e4c68621b4052b2
[INFO] validating manifest of cjm00/dedup on toolchain master#8e948df707ea8a3c88c65bf2ffdcb2f1cf5491be
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8e948df707ea8a3c88c65bf2ffdcb2f1cf5491be-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of cjm00/dedup on toolchain try#af22dfc7f56a5057c6b6120a65c74e7b6c1530af
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+af22dfc7f56a5057c6b6120a65c74e7b6c1530af-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing cjm00/dedup
[INFO] removed workspace from cjm00/dedup
[INFO] removed path dependency fastchr from cjm00/dedup
[INFO] finished frobbing cjm00/dedup
[INFO] frobbed toml for cjm00/dedup written to work/ex/pr-61753/sources/master#8e948df707ea8a3c88c65bf2ffdcb2f1cf5491be/gh/cjm00/dedup/Cargo.toml
[INFO] started frobbing cjm00/dedup
[INFO] removed workspace from cjm00/dedup
[INFO] removed path dependency fastchr from cjm00/dedup
[INFO] finished frobbing cjm00/dedup
[INFO] frobbed toml for cjm00/dedup written to work/ex/pr-61753/sources/try#af22dfc7f56a5057c6b6120a65c74e7b6c1530af/gh/cjm00/dedup/Cargo.toml
[INFO] crate cjm00/dedup already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8e948df707ea8a3c88c65bf2ffdcb2f1cf5491be-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: failed to select a version for the requirement `fastchr = "^0.4"`
[INFO] [stderr]   candidate versions found which didn't match: 0.3.0, 0.2.0, 0.1.0
[INFO] [stderr]   location searched: crates.io index
[INFO] [stderr] required by package `dedup v0.2.0 (/mnt/big/crater/work/ex/pr-61753/sources/master#8e948df707ea8a3c88c65bf2ffdcb2f1cf5491be/gh/cjm00/dedup)`
[ERROR] this task or one of its parent failed!
[ERROR] command `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8e948df707ea8a3c88c65bf2ffdcb2f1cf5491be-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` failed