[INFO] updating cached repository emilk/drop-merge-sort
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/emilk/drop-merge-sort
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/emilk/drop-merge-sort" "work/ex/beta-1.38-1/sources/1.37.0/gh/emilk/drop-merge-sort"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/emilk/drop-merge-sort'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/emilk/drop-merge-sort" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/emilk/drop-merge-sort"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/emilk/drop-merge-sort'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f5805104710c40b2a083e57f7530dcaad3f3857c
[INFO] sha for GitHub repo emilk/drop-merge-sort: f5805104710c40b2a083e57f7530dcaad3f3857c
[INFO] validating manifest of emilk/drop-merge-sort on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of emilk/drop-merge-sort on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing emilk/drop-merge-sort
[INFO] finished frobbing emilk/drop-merge-sort
[INFO] frobbed toml for emilk/drop-merge-sort written to work/ex/beta-1.38-1/sources/1.37.0/gh/emilk/drop-merge-sort/Cargo.toml
[INFO] started frobbing emilk/drop-merge-sort
[INFO] finished frobbing emilk/drop-merge-sort
[INFO] frobbed toml for emilk/drop-merge-sort written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/emilk/drop-merge-sort/Cargo.toml
[INFO] crate emilk/drop-merge-sort already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing emilk/drop-merge-sort against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/emilk/drop-merge-sort:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 01dd1f99d8474ea7b0e32967a7cb897b7194a47af91027282637d999e55284da
[INFO] running `"docker" "start" "-a" "01dd1f99d8474ea7b0e32967a7cb897b7194a47af91027282637d999e55284da"`
[INFO] [stderr]    Compiling dmsort v1.0.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.46s
[INFO] running `"docker" "inspect" "01dd1f99d8474ea7b0e32967a7cb897b7194a47af91027282637d999e55284da"`
[INFO] running `"docker" "rm" "-f" "01dd1f99d8474ea7b0e32967a7cb897b7194a47af91027282637d999e55284da"`
[INFO] [stdout] 01dd1f99d8474ea7b0e32967a7cb897b7194a47af91027282637d999e55284da
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/emilk/drop-merge-sort:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] b0fb7d1afdfd4927e2f87758fdec1907a88b104f74f8c75def36ad64f83bc8d5
[INFO] running `"docker" "start" "-a" "b0fb7d1afdfd4927e2f87758fdec1907a88b104f74f8c75def36ad64f83bc8d5"`
[INFO] [stderr]    Compiling odds v0.2.25
[INFO] [stderr]    Compiling gnuplot v0.0.22
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]    Compiling pbr v1.0.0
[INFO] [stderr]    Compiling nodrop v0.1.9
[INFO] [stderr]    Compiling quickersort v2.2.0
[INFO] [stderr]    Compiling dmsort v1.0.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.68s
[INFO] running `"docker" "inspect" "b0fb7d1afdfd4927e2f87758fdec1907a88b104f74f8c75def36ad64f83bc8d5"`
[INFO] running `"docker" "rm" "-f" "b0fb7d1afdfd4927e2f87758fdec1907a88b104f74f8c75def36ad64f83bc8d5"`
[INFO] [stdout] b0fb7d1afdfd4927e2f87758fdec1907a88b104f74f8c75def36ad64f83bc8d5
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/emilk/drop-merge-sort:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 2d479ce4a9e9e8202d41f49c55032d09c13ea2f60fafdbe5e0305b37f5a6d6b2
[INFO] running `"docker" "start" "-a" "2d479ce4a9e9e8202d41f49c55032d09c13ea2f60fafdbe5e0305b37f5a6d6b2"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/benchmark-cb90bba3aa4459d7
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test benchmarks ... ignored
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/tests-f730a273af0fbc8a
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test simple_tests ... ok
[INFO] [stdout] test test_unwind ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests dmsort
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test src/dmsort.rs - dmsort::sort (line 374) ... ok
[INFO] [stdout] test src/dmsort.rs - dmsort::sort_by_key (line 360) ... ok
[INFO] [stdout] test src/dmsort.rs - dmsort::sort_by (line 347) ... ok
[INFO] [stdout] test src/lib.rs -  (line 18) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "2d479ce4a9e9e8202d41f49c55032d09c13ea2f60fafdbe5e0305b37f5a6d6b2"`
[INFO] running `"docker" "rm" "-f" "2d479ce4a9e9e8202d41f49c55032d09c13ea2f60fafdbe5e0305b37f5a6d6b2"`
[INFO] [stdout] 2d479ce4a9e9e8202d41f49c55032d09c13ea2f60fafdbe5e0305b37f5a6d6b2