[INFO] updating cached repository tbk1988/ramseyrecursion
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/tbk1988/ramseyrecursion
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/tbk1988/ramseyrecursion" "work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/tbk1988/ramseyrecursion"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/tbk1988/ramseyrecursion'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/tbk1988/ramseyrecursion" "work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/tbk1988/ramseyrecursion"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/tbk1988/ramseyrecursion'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9df0cd2304ad7fc6035f9a4e00b24aef163f2b22
[INFO] sha for GitHub repo tbk1988/ramseyrecursion: 9df0cd2304ad7fc6035f9a4e00b24aef163f2b22
[INFO] validating manifest of tbk1988/ramseyrecursion on toolchain master#c43d03a19f326f4a323569328cc501e86eb6d22e
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of tbk1988/ramseyrecursion on toolchain try#75eff020d0923c035c2fe220db4a0465cd847048
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing tbk1988/ramseyrecursion
[INFO] finished frobbing tbk1988/ramseyrecursion
[INFO] frobbed toml for tbk1988/ramseyrecursion written to work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/tbk1988/ramseyrecursion/Cargo.toml
[INFO] started frobbing tbk1988/ramseyrecursion
[INFO] finished frobbing tbk1988/ramseyrecursion
[INFO] frobbed toml for tbk1988/ramseyrecursion written to work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/tbk1988/ramseyrecursion/Cargo.toml
[INFO] crate tbk1988/ramseyrecursion already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking tbk1988/ramseyrecursion against master#c43d03a19f326f4a323569328cc501e86eb6d22e for pr-63565
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63565/worker-3/master#c43d03a19f326f4a323569328cc501e86eb6d22e:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/tbk1988/ramseyrecursion:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 48919c8adad26ff135f0abb9e5f84c5a26452f0ff99d693a17011ef820cdb4c8
[INFO] running `"docker" "start" "-a" "48919c8adad26ff135f0abb9e5f84c5a26452f0ff99d693a17011ef820cdb4c8"`
[INFO] [stderr]     Checking num-bigint v0.2.2
[INFO] [stderr]     Checking ramsey_numbers v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.53s
[INFO] running `"docker" "inspect" "48919c8adad26ff135f0abb9e5f84c5a26452f0ff99d693a17011ef820cdb4c8"`
[INFO] running `"docker" "rm" "-f" "48919c8adad26ff135f0abb9e5f84c5a26452f0ff99d693a17011ef820cdb4c8"`
[INFO] [stdout] 48919c8adad26ff135f0abb9e5f84c5a26452f0ff99d693a17011ef820cdb4c8