[INFO] cloning repository https://github.com/noshi91/n91lib_rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/noshi91/n91lib_rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnoshi91%2Fn91lib_rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnoshi91%2Fn91lib_rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a8b82153f9e34e944daec10a382f687c372e3509
[INFO] testing noshi91/n91lib_rs against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnoshi91%2Fn91lib_rs" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/noshi91/n91lib_rs on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/noshi91/n91lib_rs
[INFO] finished tweaking git repo https://github.com/noshi91/n91lib_rs
[INFO] tweaked toml for git repo https://github.com/noshi91/n91lib_rs written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/noshi91/n91lib_rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2a625164e2d137571729df514c011c5114bd13aa51a1ccc534febb72003e2d7d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "2a625164e2d137571729df514c011c5114bd13aa51a1ccc534febb72003e2d7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2a625164e2d137571729df514c011c5114bd13aa51a1ccc534febb72003e2d7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a625164e2d137571729df514c011c5114bd13aa51a1ccc534febb72003e2d7d", kill_on_drop: false }`
[INFO] [stdout] 2a625164e2d137571729df514c011c5114bd13aa51a1ccc534febb72003e2d7d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a705532541c37187035fe9d5c2b8ff33430bb08bc131d1b3a834967362dbdf93
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a705532541c37187035fe9d5c2b8ff33430bb08bc131d1b3a834967362dbdf93", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling n91lib_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `Vec::<T>::split_off` that must be used
[INFO] [stdout]   --> src/other/polynomial.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |             self.coef.split_off(len);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: use `.truncate()` if you don't need the other half
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.40s
[INFO] running `Command { std: "docker" "inspect" "a705532541c37187035fe9d5c2b8ff33430bb08bc131d1b3a834967362dbdf93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a705532541c37187035fe9d5c2b8ff33430bb08bc131d1b3a834967362dbdf93", kill_on_drop: false }`
[INFO] [stdout] a705532541c37187035fe9d5c2b8ff33430bb08bc131d1b3a834967362dbdf93
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 57d4a301e7a1837316247b553342aa21243118151142264bbb81b14081cd53b2
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "57d4a301e7a1837316247b553342aa21243118151142264bbb81b14081cd53b2", kill_on_drop: false }`
[INFO] [stderr]    Compiling n91lib_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `Vec::<T>::split_off` that must be used
[INFO] [stdout]   --> src/other/polynomial.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |             self.coef.split_off(len);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: use `.truncate()` if you don't need the other half
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Vec::<T>::split_off` that must be used
[INFO] [stdout]   --> src/other/polynomial.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |             self.coef.split_off(len);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: use `.truncate()` if you don't need the other half
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 10.22s
[INFO] running `Command { std: "docker" "inspect" "57d4a301e7a1837316247b553342aa21243118151142264bbb81b14081cd53b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57d4a301e7a1837316247b553342aa21243118151142264bbb81b14081cd53b2", kill_on_drop: false }`
[INFO] [stdout] 57d4a301e7a1837316247b553342aa21243118151142264bbb81b14081cd53b2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 929cb4230e45981667c14bfc7d3a61faec1c09975b475005b1b47d51635ae9da
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "929cb4230e45981667c14bfc7d3a61faec1c09975b475005b1b47d51635ae9da", kill_on_drop: false }`
[INFO] [stderr] warning: unused return value of `Vec::<T>::split_off` that must be used
[INFO] [stderr]   --> src/other/polynomial.rs:26:13
[INFO] [stderr]    |
[INFO] [stderr] 26 |             self.coef.split_off(len);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: use `.truncate()` if you don't need the other half
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `Vec::<T>::split_off` that must be used
[INFO] [stderr]   --> src/other/polynomial.rs:26:13
[INFO] [stderr]    |
[INFO] [stderr] 26 |             self.coef.split_off(len);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: use `.truncate()` if you don't need the other half
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/n91lib_rs-edc53effaa18be5a
[INFO] [stdout] running 37 tests
[INFO] [stdout] test algorithm::determinant::test_determinant ... ok
[INFO] [stdout] test algorithm::hafnian::test_hafnian ... ok
[INFO] [stdout] test algorithm::division_free_determinant::test_division_free_determinant ... ok
[INFO] [stdout] test algorithm::pow::test_pow ... ok
[INFO] [stdout] test algorithm::subset_convolution::test_subset_convolution ... ok
[INFO] [stdout] test algorithm::number_theoretic_transform::test_number_theoretic_transform ... ok
[INFO] [stdout] test data_structure::conchon_filliatre_persistent_union_find::test_conchon_filliatre_persistent_union_find ... ok
[INFO] [stdout] test data_structure::interval_heap::interval_heap_test ... ok
[INFO] [stdout] test data_structure::fenwick_tree::test_fenwick_tree ... ok
[INFO] [stdout] test data_structure::radix_heap::test_radix_heap ... ok
[INFO] [stdout] test data_structure::randomized_meldable_heap::randomized_meldable_heap_test ... ok
[INFO] [stdout] test algorithm::permutation_tree::test_permutation_tree ... ok
[INFO] [stdout] test data_structure::bit_vector::test_bit_vector ... ok
[INFO] [stdout] test data_structure::range_minimum_query::test_range_minimum_query ... ok
[INFO] [stdout] test algorithm::givens_rotation::test_givens_rotation ... ok
[INFO] [stdout] test data_structure::skew_heap::skew_heap_test ... ok
[INFO] [stdout] test data_structure::sparse_table::test_sparse_table ... ok
[INFO] [stdout] test algorithm::maximum_k_subarray::test_maximum_k_subarray ... ok
[INFO] [stdout] test data_structure::range_linear_add_min::test_range_linear_add_min ... ok
[INFO] [stdout] test data_structure::rerooting_persistent_array::test_rerooting_persistent_array ... ok
[INFO] [stdout] test other::linked_list::test_linked_list ... ok
[INFO] [stdout] test other::gf2m::test_gf2m ... ok
[INFO] [stdout] test algorithm::extreme_vertex_sets::test_extreme_vertex_sets ... ok
[INFO] [stdout] test algorithm::smawk::test_smawk ... ok
[INFO] [stdout] test other::integer_sqrt::test_integer_sqrt ... ok
[INFO] [stdout] test algorithm::quick_select::test_quick_select ... ok
[INFO] [stdout] test data_structure::wavelet_matrix::test_wavelet_matrix ... ok
[INFO] [stdout] test algorithm::wildcard_matching::test_wildcard_matching ... ok
[INFO] [stdout] test data_structure::range_add_sum_2d::test_range_add_sum_2d ... ok
[INFO] [stdout] test other::mod_inv::test_mod_inv_binary_gcd ... ok
[INFO] [stdout] test algorithm::max_min_convolution::test_max_min_convolution ... ok
[INFO] [stdout] test algorithm::karger_stein::test_karger_stein ... ok
[INFO] [stdout] test data_structure::level_ancestor::test_level_ancestor ... ok
[INFO] [stdout] test data_structure::array_mapped_trie_map::test_array_mapped_trie_map ... ok
[INFO] [stdout] test data_structure::avl_tree::test_avl_tree ... ok
[INFO] [stdout] test algorithm::shortest_even_length_cycle::test_shortest_even_length_cycle ... ok
[INFO] [stderr]    Doc-tests n91lib_rs
[INFO] [stdout] test algorithm::bipartite_hamiltonian_cycle::test_bipartite_hamiltonian_cycle ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 37 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[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 `Command { std: "docker" "inspect" "929cb4230e45981667c14bfc7d3a61faec1c09975b475005b1b47d51635ae9da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "929cb4230e45981667c14bfc7d3a61faec1c09975b475005b1b47d51635ae9da", kill_on_drop: false }`
[INFO] [stdout] 929cb4230e45981667c14bfc7d3a61faec1c09975b475005b1b47d51635ae9da