[INFO] fetching crate slicetools 0.3.0...
[INFO] testing slicetools-0.3.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate slicetools 0.3.0 into /workspace/builds/worker-33/source
[INFO] validating manifest of crates.io crate slicetools 0.3.0 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate slicetools 0.3.0
[INFO] finished tweaking crates.io crate slicetools 0.3.0
[INFO] tweaked toml for crates.io crate slicetools 0.3.0 written to /workspace/builds/worker-33/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ad6ef62fa2ebf1462214e059d502464070935f4fd39c11b9e09b37a6611e69c6
[INFO] running `Command { std: "docker" "start" "-a" "ad6ef62fa2ebf1462214e059d502464070935f4fd39c11b9e09b37a6611e69c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ad6ef62fa2ebf1462214e059d502464070935f4fd39c11b9e09b37a6611e69c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad6ef62fa2ebf1462214e059d502464070935f4fd39c11b9e09b37a6611e69c6", kill_on_drop: false }`
[INFO] [stdout] ad6ef62fa2ebf1462214e059d502464070935f4fd39c11b9e09b37a6611e69c6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6b9b868cc5c947a379c2a10ce40d1bae114ad4e0070e750795163d49250e279c
[INFO] running `Command { std: "docker" "start" "-a" "6b9b868cc5c947a379c2a10ce40d1bae114ad4e0070e750795163d49250e279c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling slicetools v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.93s
[INFO] running `Command { std: "docker" "inspect" "6b9b868cc5c947a379c2a10ce40d1bae114ad4e0070e750795163d49250e279c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b9b868cc5c947a379c2a10ce40d1bae114ad4e0070e750795163d49250e279c", kill_on_drop: false }`
[INFO] [stdout] 6b9b868cc5c947a379c2a10ce40d1bae114ad4e0070e750795163d49250e279c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f2a2b2a7963913dfd6ac267be98da2a803177a7bd677ecb42d37ae7bdd2a488c
[INFO] running `Command { std: "docker" "start" "-a" "f2a2b2a7963913dfd6ac267be98da2a803177a7bd677ecb42d37ae7bdd2a488c", kill_on_drop: false }`
[INFO] [stderr]    Compiling slicetools v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `Command { std: "docker" "inspect" "f2a2b2a7963913dfd6ac267be98da2a803177a7bd677ecb42d37ae7bdd2a488c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2a2b2a7963913dfd6ac267be98da2a803177a7bd677ecb42d37ae7bdd2a488c", kill_on_drop: false }`
[INFO] [stdout] f2a2b2a7963913dfd6ac267be98da2a803177a7bd677ecb42d37ae7bdd2a488c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8a7b087de3134b3bd7c7141d7a85bfc397318c7d80decbac29e31f7c91ca2fb2
[INFO] running `Command { std: "docker" "start" "-a" "8a7b087de3134b3bd7c7141d7a85bfc397318c7d80decbac29e31f7c91ca2fb2", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/slicetools-640050a90644f228)
[INFO] [stdout] 
[INFO] [stdout] running 16 tests
[INFO] [stdout] test cartesian_product_mut::tests::slices_when_at_least_one_is_empty ... ok
[INFO] [stdout] test cartesian_product_mut::tests::slices_when_one_have_only_1_item ... ok
[INFO] [stdout] test cartesian_product_mut::tests::slices_with_1_item_each ... ok
[INFO] [stdout] test cartesian_product_mut::tests::slices_with_multiple_items ... ok
[INFO] [stdout] test group_mut::tests::slice_with_0_item ... ok
[INFO] [stdout] test group_mut::tests::slice_with_1_item ... ok
[INFO] [stdout] test group_mut::tests::slice_with_one_item_type ... ok
[INFO] [stdout] test group_mut::tests::slice_with_unique_items ... ok
[INFO] [stdout] test group_mut::tests::slice_with_various_groups ... ok
[INFO] [stdout] test group_mut::tests::version_with_closure_condition ... ok
[INFO] [stdout] test group_mut::tests::version_with_closure_key ... ok
[INFO] [stdout] test pairs_mut::tests::empty_slice ... ok
[INFO] [stdout] test pairs_mut::tests::simple_algorith ... ok
[INFO] [stdout] test pairs_mut::tests::slice_with_1_item ... ok
[INFO] [stdout] test pairs_mut::tests::slice_with_2_items ... ok
[INFO] [stdout] test pairs_mut::tests::slice_with_3_items ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 16 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests slicetools
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test src/lib.rs - SliceTools::pairs_mut (line 100) ... ok
[INFO] [stdout] test src/lib.rs - (line 10) ... ok
[INFO] [stdout] test src/lib.rs - (line 28) ... ok
[INFO] [stdout] test src/lib.rs - SliceTools::group_by_mut (line 178) ... ok
[INFO] [stdout] test src/lib.rs - SliceTools::group_mut (line 126) ... ok
[INFO] [stdout] test src/lib.rs - SliceTools::group_by_key_mut (line 152) ... ok
[INFO] [stdout] test src/lib.rs - SliceTools::cartesian_product_mut (line 75) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.32s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "8a7b087de3134b3bd7c7141d7a85bfc397318c7d80decbac29e31f7c91ca2fb2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a7b087de3134b3bd7c7141d7a85bfc397318c7d80decbac29e31f7c91ca2fb2", kill_on_drop: false }`
[INFO] [stdout] 8a7b087de3134b3bd7c7141d7a85bfc397318c7d80decbac29e31f7c91ca2fb2