[INFO] updating cached repository treetertot/sorting-playground
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/treetertot/sorting-playground
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/treetertot/sorting-playground" "work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/treetertot/sorting-playground"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/treetertot/sorting-playground'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/treetertot/sorting-playground" "work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/treetertot/sorting-playground"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/treetertot/sorting-playground'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 09594fb9f481d12f18fd7414f13a84dcfa6ab8c4
[INFO] sha for GitHub repo treetertot/sorting-playground: 09594fb9f481d12f18fd7414f13a84dcfa6ab8c4
[INFO] validating manifest of treetertot/sorting-playground 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 treetertot/sorting-playground 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 treetertot/sorting-playground
[INFO] finished frobbing treetertot/sorting-playground
[INFO] frobbed toml for treetertot/sorting-playground written to work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/treetertot/sorting-playground/Cargo.toml
[INFO] started frobbing treetertot/sorting-playground
[INFO] finished frobbing treetertot/sorting-playground
[INFO] frobbed toml for treetertot/sorting-playground written to work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/treetertot/sorting-playground/Cargo.toml
[INFO] crate treetertot/sorting-playground 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 treetertot/sorting-playground against master#c43d03a19f326f4a323569328cc501e86eb6d22e for pr-63565
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63565/worker-5/master#c43d03a19f326f4a323569328cc501e86eb6d22e:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/treetertot/sorting-playground:/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] ae9aa3e84a937dcabf1e25fadb2e1512c3e8e85e19abfaaa3abffc6be22da755
[INFO] running `"docker" "start" "-a" "ae9aa3e84a937dcabf1e25fadb2e1512c3e8e85e19abfaaa3abffc6be22da755"`
[INFO] [stderr]     Checking getrandom v0.1.6
[INFO] [stderr]     Checking mergesort v0.1.0 (https://github.com/treetertot/Joshsort.git#a3ff0ee8)
[INFO] [stderr]     Checking rand_core v0.5.0
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.0
[INFO] [stderr]     Checking sorting v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `multi_sort`
[INFO] [stderr]  --> src/main.rs:1:18
[INFO] [stderr]   |
[INFO] [stderr] 1 | use mergesort::{ multi_sort, sort };
[INFO] [stderr]   |                  ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `multi_sort`
[INFO] [stderr]  --> src/main.rs:1:18
[INFO] [stderr]   |
[INFO] [stderr] 1 | use mergesort::{ multi_sort, sort };
[INFO] [stderr]   |                  ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.31s
[INFO] running `"docker" "inspect" "ae9aa3e84a937dcabf1e25fadb2e1512c3e8e85e19abfaaa3abffc6be22da755"`
[INFO] running `"docker" "rm" "-f" "ae9aa3e84a937dcabf1e25fadb2e1512c3e8e85e19abfaaa3abffc6be22da755"`
[INFO] [stdout] ae9aa3e84a937dcabf1e25fadb2e1512c3e8e85e19abfaaa3abffc6be22da755