[INFO] cloning repository treetertot/sorting-playground
[INFO] running `"git" "clone" "--bare" "git://github.com/treetertot/sorting-playground.git" "work/cache/sources/gh/treetertot/sorting-playground"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/treetertot/sorting-playground'...
[INFO] running `"git" "clone" "work/cache/sources/gh/treetertot/sorting-playground" "work/ex/beta-1.37-6/sources/1.36.0/gh/treetertot/sorting-playground"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/treetertot/sorting-playground'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/treetertot/sorting-playground" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/treetertot/sorting-playground"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/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 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of treetertot/sorting-playground on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "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/beta-1.37-6/sources/1.36.0/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/beta-1.37-6/sources/beta-2019-07-23/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" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Updating git repository `https://github.com/treetertot/Joshsort.git`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing treetertot/sorting-playground against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/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=warn" "-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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 745f7d8dadcb5be6c852becf2f331057666954c8a7eac82587aea7f57e0970b1
[INFO] running `"docker" "start" "-a" "745f7d8dadcb5be6c852becf2f331057666954c8a7eac82587aea7f57e0970b1"`
[INFO] [stderr]    Compiling mergesort v0.1.0 (https://github.com/treetertot/Joshsort.git#a3ff0ee8)
[INFO] [stderr]    Compiling 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]     Finished dev [unoptimized + debuginfo] target(s) in 0.88s
[INFO] running `"docker" "inspect" "745f7d8dadcb5be6c852becf2f331057666954c8a7eac82587aea7f57e0970b1"`
[INFO] running `"docker" "rm" "-f" "745f7d8dadcb5be6c852becf2f331057666954c8a7eac82587aea7f57e0970b1"`
[INFO] [stdout] 745f7d8dadcb5be6c852becf2f331057666954c8a7eac82587aea7f57e0970b1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/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=warn" "-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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 236ad3f9c4828254a6fb59caa95a5a853b65ac024112533e7464295febca1ddf
[INFO] running `"docker" "start" "-a" "236ad3f9c4828254a6fb59caa95a5a853b65ac024112533e7464295febca1ddf"`
[INFO] [stderr]    Compiling 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]     Finished dev [unoptimized + debuginfo] target(s) in 0.46s
[INFO] running `"docker" "inspect" "236ad3f9c4828254a6fb59caa95a5a853b65ac024112533e7464295febca1ddf"`
[INFO] running `"docker" "rm" "-f" "236ad3f9c4828254a6fb59caa95a5a853b65ac024112533e7464295febca1ddf"`
[INFO] [stdout] 236ad3f9c4828254a6fb59caa95a5a853b65ac024112533e7464295febca1ddf
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/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=warn" "-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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 281ca656ab031f058364b7fda87256709a4d69866df7232fffd42cdbeef480af
[INFO] running `"docker" "start" "-a" "281ca656ab031f058364b7fda87256709a4d69866df7232fffd42cdbeef480af"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/sorting-3c0570ec9747163c
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "281ca656ab031f058364b7fda87256709a4d69866df7232fffd42cdbeef480af"`
[INFO] running `"docker" "rm" "-f" "281ca656ab031f058364b7fda87256709a4d69866df7232fffd42cdbeef480af"`
[INFO] [stdout] 281ca656ab031f058364b7fda87256709a4d69866df7232fffd42cdbeef480af