[INFO] fetching crate graphrox 1.2.0...
[INFO] testing graphrox-1.2.0 against beta-2023-04-20 for beta-1.70-1
[INFO] extracting crate graphrox 1.2.0 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate graphrox 1.2.0 on toolchain beta-2023-04-20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate graphrox 1.2.0
[INFO] finished tweaking crates.io crate graphrox 1.2.0
[INFO] tweaked toml for crates.io crate graphrox 1.2.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" __CARGO_TEST_CHANNEL_OVERRIDE_DO_NOT_USE_THIS="nightly" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6e24134257f72bee2eb7790a31bf1f8f9458aae9e43b088bf2858cd4646e4a2b
[INFO] running `Command { std: "docker" "start" "-a" "6e24134257f72bee2eb7790a31bf1f8f9458aae9e43b088bf2858cd4646e4a2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6e24134257f72bee2eb7790a31bf1f8f9458aae9e43b088bf2858cd4646e4a2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e24134257f72bee2eb7790a31bf1f8f9458aae9e43b088bf2858cd4646e4a2b", kill_on_drop: false }`
[INFO] [stdout] 6e24134257f72bee2eb7790a31bf1f8f9458aae9e43b088bf2858cd4646e4a2b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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" "RUSTDOCFLAGS=--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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 873b809405dde1740f1e5c6bac5f18463a9926f863b8e63aad62acfddbcaca4a
[INFO] running `Command { std: "docker" "start" "-a" "873b809405dde1740f1e5c6bac5f18463a9926f863b8e63aad62acfddbcaca4a", kill_on_drop: false }`
[INFO] [stderr]    Compiling graphrox v1.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.44s
[INFO] running `Command { std: "docker" "inspect" "873b809405dde1740f1e5c6bac5f18463a9926f863b8e63aad62acfddbcaca4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "873b809405dde1740f1e5c6bac5f18463a9926f863b8e63aad62acfddbcaca4a", kill_on_drop: false }`
[INFO] [stdout] 873b809405dde1740f1e5c6bac5f18463a9926f863b8e63aad62acfddbcaca4a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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" "RUSTDOCFLAGS=--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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b1b9d73ed0953dcc897ca6bba4d99b584945163a897d03fff3e62b186e6fb66f
[INFO] running `Command { std: "docker" "start" "-a" "b1b9d73ed0953dcc897ca6bba4d99b584945163a897d03fff3e62b186e6fb66f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling graphrox v1.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.51s
[INFO] running `Command { std: "docker" "inspect" "b1b9d73ed0953dcc897ca6bba4d99b584945163a897d03fff3e62b186e6fb66f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b1b9d73ed0953dcc897ca6bba4d99b584945163a897d03fff3e62b186e6fb66f", kill_on_drop: false }`
[INFO] [stdout] b1b9d73ed0953dcc897ca6bba4d99b584945163a897d03fff3e62b186e6fb66f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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" "RUSTDOCFLAGS=--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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 061fdf0ee1a6db57e4f5e1116060940b3c126d6707e9f07da25ec2e17a239905
[INFO] running `Command { std: "docker" "start" "-a" "061fdf0ee1a6db57e4f5e1116060940b3c126d6707e9f07da25ec2e17a239905", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/graphrox-dab5a75ef40bcbb1)
[INFO] [stdout] 
[INFO] [stdout] running 57 tests
[INFO] [stdout] test graph::compressed::tests::test_compressed_graph_builder_new ... ok
[INFO] [stdout] test graph::compressed::tests::test_compressed_graph_builder_add_compressed_matrix_entry ... ok
[INFO] [stdout] test graph::compressed::tests::test_compressed_graph_builder_finish ... ok
[INFO] [stdout] test graph::compressed::tests::test_compressed_graph_compression_level ... ok
[INFO] [stdout] test graph::compressed::tests::test_compressed_graph_decompress ... ok
[INFO] [stdout] test graph::compressed::tests::test_compressed_graph_does_edge_exist ... ok
[INFO] [stdout] test graph::compressed::tests::test_compressed_graph_edge_count ... ok
[INFO] [stdout] test graph::compressed::tests::test_compressed_graph_is_undirected ... ok
[INFO] [stdout] test graph::compressed::tests::test_compressed_graph_matrix_string ... ok
[INFO] [stdout] test graph::compressed::tests::test_compressed_graph_to_from_bytes ... ok
[INFO] [stdout] test graph::compressed::tests::test_compressed_graph_vertex_count ... ok
[INFO] [stdout] test graph::standard::tests::test_get_vertex_in_degree ... ok
[INFO] [stdout] test graph::standard::tests::test_find_avg_pool_matrix ... ok
[INFO] [stdout] test graph::standard::tests::test_approximate ... ok
[INFO] [stdout] test graph::standard::tests::test_get_vertex_in_edges ... ok
[INFO] [stdout] test graph::standard::tests::test_get_vertex_out_edges ... ok
[INFO] [stdout] test graph::standard::tests::test_standard_graph_add_edge ... ok
[INFO] [stdout] test graph::standard::tests::test_get_vertex_out_degree ... ok
[INFO] [stdout] test graph::standard::tests::test_standard_graph_add_vertex ... ok
[INFO] [stdout] test graph::standard::tests::test_standard_graph_delete_edge ... ok
[INFO] [stdout] test graph::standard::tests::test_standard_graph_directed_from ... ok
[INFO] [stdout] test graph::compressed::tests::test_compressed_graph_get_compressed_matrix_entry ... ok
[INFO] [stdout] test graph::standard::tests::test_standard_graph_does_edge_exist ... ok
[INFO] [stdout] test graph::standard::tests::test_standard_graph_edge_count ... ok
[INFO] [stdout] test graph::standard::tests::test_standard_graph_is_undirected ... ok
[INFO] [stdout] test graph::standard::tests::test_standard_graph_matrix_string ... ok
[INFO] [stdout] test graph::compressed::tests::test_find_hamming_weight ... ok
[INFO] [stdout] test graph::standard::tests::test_standard_graph_to_from_bytes ... ok
[INFO] [stdout] test graph::standard::tests::test_standard_graph_undirected_from ... ok
[INFO] [stdout] test graph::standard::tests::test_standard_graph_new ... ok
[INFO] [stdout] test graph::standard::tests::test_standard_graph_ref_iterator ... ok
[INFO] [stdout] test graph::standard::tests::test_standard_graph_vertex_count ... ok
[INFO] [stdout] test graph::standard::tests::test_standard_graph_undirected_from_unchecked ... ok
[INFO] [stdout] test matrix::csr_adjacency_matrix::tests::test_adjacency_matrix_ref_iterator ... ok
[INFO] [stdout] test matrix::csr_adjacency_matrix::tests::test_adjacency_matrix_to_string ... ok
[INFO] [stdout] test matrix::csr_adjacency_matrix::tests::test_get_entry ... ok
[INFO] [stdout] test matrix::csr_adjacency_matrix::tests::test_get_entry_count ... ok
[INFO] [stdout] test matrix::csr_adjacency_matrix::tests::test_get_sparse_row_vector ... ok
[INFO] [stdout] test matrix::csr_adjacency_matrix::tests::test_get_sparse_col_vector ... ok
[INFO] [stdout] test matrix::csr_adjacency_matrix::tests::test_new_matrix ... ok
[INFO] [stdout] test matrix::csr_adjacency_matrix::tests::test_row_nonzero_entry_count ... ok
[INFO] [stdout] test matrix::csr_adjacency_matrix::tests::test_get_dimension ... ok
[INFO] [stdout] test matrix::csr_adjacency_matrix::tests::test_zero_entry ... ok
[INFO] [stdout] test matrix::csr_adjacency_matrix::tests::test_col_nonzero_entry_count ... ok
[INFO] [stdout] test matrix::csr_adjacency_matrix::tests::test_set_entry ... ok
[INFO] [stdout] test matrix::csr_square_matrix::tests::test_get_entry ... ok
[INFO] [stdout] test matrix::csr_square_matrix::tests::test_get_dimension ... ok
[INFO] [stdout] test matrix::csr_square_matrix::tests::test_get_entry_count ... ok
[INFO] [stdout] test matrix::csr_square_matrix::tests::test_increment_entry ... ok
[INFO] [stdout] test matrix::csr_square_matrix::tests::test_matrix_to_string ... ok
[INFO] [stdout] test matrix::csr_square_matrix::tests::test_zero_entry ... ok
[INFO] [stdout] test matrix::csr_square_matrix::tests::test_set_entry ... ok
[INFO] [stdout] test matrix::csr_square_matrix::tests::test_matrix_to_string_with_precision ... ok
[INFO] [stdout] test matrix::csr_square_matrix::tests::test_new_matrix ... ok
[INFO] [stdout] test util::tests::test_as_byte_slice ... ok
[INFO] [stdout] test matrix::csr_square_matrix::tests::test_matrix_ref_iterator ... ok
[INFO] [stdout] test graph::standard::tests::test_standard_graph_compress ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 57 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests graphrox
[INFO] [stdout] 
[INFO] [stdout] running 56 tests
[INFO] [stdout] test src/graph/mod.rs - graph::graph_traits::GraphRepresentation::is_undirected (line 14) ... ok
[INFO] [stdout] test src/graph/standard.rs - graph::standard::StandardGraph (line 33) ... ok
[INFO] [stdout] test src/graph/compressed.rs - graph::compressed::CompressedGraph::compression_level (line 128) ... ok
[INFO] [stdout] test src/graph/mod.rs - graph::graph_traits::GraphRepresentation::edge_count (line 43) ... ok
[INFO] [stdout] test src/graph/compressed.rs - graph::compressed::CompressedGraph::decompress (line 76) ... ok
[INFO] [stdout] test src/graph/mod.rs - graph::graph_traits::GraphRepresentation::vertex_count (line 30) ... ok
[INFO] [stdout] test src/graph/compressed.rs - graph::compressed::CompressedGraph (line 48) ... ok
[INFO] [stdout] test src/graph/compressed.rs - graph::compressed::CompressedGraphBuilder::finish (line 557) ... ok
[INFO] [stdout] test src/graph/compressed.rs - graph::compressed::CompressedGraphBuilder::add_compressed_matrix_entry (line 499) ... ok
[INFO] [stdout] test src/graph/mod.rs - graph::graph_traits::GraphRepresentation::matrix_string (line 55) ... ok
[INFO] [stdout] test src/graph/standard.rs - graph::standard::StandardGraph::add_edge (line 246) ... ok
[INFO] [stdout] test src/graph/mod.rs - graph::graph_traits::GraphRepresentation::does_edge_exist (line 69) ... ok
[INFO] [stdout] test src/graph/compressed.rs - graph::compressed::CompressedGraphBuilder::new (line 434) ... ok
[INFO] [stdout] test src/graph/compressed.rs - graph::compressed::CompressedGraph::get_compressed_matrix_entry (line 148) ... ok
[INFO] [stdout] test src/graph/compressed.rs - graph::compressed::CompressedGraphBuilder (line 402) ... ok
[INFO] [stdout] test src/graph/mod.rs - graph::graph_traits::GraphRepresentation::to_bytes (line 82) ... ok
[INFO] [stdout] test src/graph/standard.rs - graph::standard::StandardGraph::add_vertex (line 204) ... ok
[INFO] [stdout] test src/graph/standard.rs - graph::standard::StandardGraph::approximate (line 521) ... ok
[INFO] [stdout] test src/graph/standard.rs - graph::standard::StandardGraph::compress (line 614) ... ok
[INFO] [stdout] test src/graph/standard.rs - graph::standard::StandardGraph::delete_edge (line 271) ... ok
[INFO] [stdout] test src/graph/standard.rs - graph::standard::StandardGraph::directed_from (line 101) ... ok
[INFO] [stdout] test src/graph/standard.rs - graph::standard::StandardGraph::find_avg_pool_matrix (line 416) ... ok
[INFO] [stdout] test src/graph/standard.rs - graph::standard::StandardGraph::get_vertex_in_degree (line 370) ... ok
[INFO] [stdout] test src/graph/standard.rs - graph::standard::StandardGraph::get_vertex_in_edges (line 310) ... ok
[INFO] [stdout] test src/graph/standard.rs - graph::standard::StandardGraph::undirected_from_unchecked (line 168) ... ok
[INFO] [stdout] test src/graph/standard.rs - graph::standard::StandardGraph::get_vertex_out_edges (line 337) ... ok
[INFO] [stdout] test src/graph/standard.rs - graph::standard::StandardGraph::get_vertex_out_degree (line 392) ... ok
[INFO] [stdout] test src/graph/standard.rs - graph::standard::StandardGraph::new_directed (line 82) ... ok
[INFO] [stdout] test src/graph/standard.rs - graph::standard::StandardGraphIter (line 881) ... ok
[INFO] [stdout] test src/graph/standard.rs - graph::standard::StandardGraph::undirected_from (line 128) ... ok
[INFO] [stdout] test src/graph/standard.rs - graph::standard::StandardGraph::new_undirected (line 62) ... ok
[INFO] [stdout] test src/matrix/csr_adjacency_matrix.rs - matrix::csr_adjacency_matrix::CsrAdjacencyMatrix::new (line 42) ... ok
[INFO] [stdout] test src/matrix/csr_adjacency_matrix.rs - matrix::csr_adjacency_matrix::CsrAdjacencyMatrix::get_sparse_col_vector (line 59) ... ok
[INFO] [stdout] test src/matrix/csr_adjacency_matrix.rs - matrix::csr_adjacency_matrix::CsrAdjacencyMatrix::get_sparse_row_vector (line 98) ... ok
[INFO] [stdout] test src/lib.rs - (line 93) ... ok
[INFO] [stdout] test src/matrix/csr_adjacency_matrix.rs - matrix::csr_adjacency_matrix::CsrAdjacencyMatrix (line 14) ... ok
[INFO] [stdout] test src/lib.rs - (line 50) ... ok
[INFO] [stdout] test src/matrix/csr_adjacency_matrix.rs - matrix::csr_adjacency_matrix::CsrAdjacencyMatrix::col_nonzero_entry_count (line 131) ... ok
[INFO] [stdout] test src/lib.rs - (line 182) ... ok
[INFO] [stdout] test src/matrix/csr_square_matrix.rs - matrix::csr_square_matrix::CsrSquareMatrix (line 16) ... ok
[INFO] [stdout] test src/lib.rs - (line 208) ... FAILED
[INFO] [stdout] test src/matrix/csr_adjacency_matrix.rs - matrix::csr_adjacency_matrix::CsrAdjacencyMatrix::to_string (line 238) ... ok
[INFO] [stdout] test src/lib.rs - (line 14) ... ok
[INFO] [stdout] test src/lib.rs - (line 146) ... ok
[INFO] [stdout] test src/matrix/csr_adjacency_matrix.rs - matrix::csr_adjacency_matrix::CsrAdjacencyMatrix::row_nonzero_entry_count (line 162) ... ok
[INFO] [stdout] test src/matrix/csr_square_matrix.rs - matrix::csr_square_matrix::CsrSquareMatrix<T>::new (line 44) ... ok
[INFO] [stdout] test src/matrix/csr_adjacency_matrix.rs - matrix::csr_adjacency_matrix::CsrAdjacencyMatrixIter (line 360) ... ok
[INFO] [stdout] test src/matrix/mod.rs - matrix::MatrixRepresentation::dimension (line 21) ... ok
[INFO] [stdout] test src/matrix/csr_square_matrix.rs - matrix::csr_square_matrix::CsrSquareMatrixIter (line 420) ... ok
[INFO] [stdout] test src/matrix/mod.rs - matrix::MatrixRepresentation::entry_count (line 40) ... ok
[INFO] [stdout] test src/matrix/mod.rs - matrix::MatrixRepresentation::get_entry (line 57) ... ok
[INFO] [stdout] test src/matrix/csr_square_matrix.rs - matrix::csr_square_matrix::CsrSquareMatrix<T>::increment_entry (line 61) ... ok
[INFO] [stdout] test src/matrix/mod.rs - matrix::MatrixRepresentation::set_entry (line 74) ... ok
[INFO] [stdout] test src/matrix/csr_square_matrix.rs - matrix::csr_square_matrix::CsrSquareMatrix<T>::to_string_with_precision (line 105) ... ok
[INFO] [stdout] test src/matrix/mod.rs - matrix::MatrixRepresentation::zero_entry (line 92) ... ok
[INFO] [stdout] test src/matrix/csr_square_matrix.rs - matrix::csr_square_matrix::CsrSquareMatrix<T>::to_string (line 361) ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 208) stdout ----
[INFO] [stdout] Test executable failed (exit status: 101).
[INFO] [stdout] 
[INFO] [stdout] stderr:
[INFO] [stdout] thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }', src/lib.rs:16:42
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x558d1edc8c8a - std::backtrace_rs::backtrace::libunwind::trace::h2f05d0192276a8f6
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
[INFO] [stdout]    1:     0x558d1edc8c8a - std::backtrace_rs::backtrace::trace_unsynchronized::hedc23dff7a1af150
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x558d1edc8c8a - std::sys_common::backtrace::_print_fmt::h17541ef7592f3ce2
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/sys_common/backtrace.rs:65:5
[INFO] [stdout]    3:     0x558d1edc8c8a - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h20f75df5ab0c0792
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stdout]    4:     0x558d1ede333f - core::fmt::write::h78109e6f466b3af6
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/core/src/fmt/mod.rs:1254:17
[INFO] [stdout]    5:     0x558d1edc6ad5 - std::io::Write::write_fmt::hc59e1b02dd273c8a
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/io/mod.rs:1698:15
[INFO] [stdout]    6:     0x558d1edc8a55 - std::sys_common::backtrace::_print::h8dac57a9f8fbf9a5
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    7:     0x558d1edc8a55 - std::sys_common::backtrace::print::hf9ecbf41d1aa712f
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    8:     0x558d1edc9fde - std::panicking::default_hook::{{closure}}::h04c07acfc84ca028
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/panicking.rs:269:22
[INFO] [stdout]    9:     0x558d1edc9d85 - std::panicking::default_hook::h01f6bb23e1eceb2c
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/panicking.rs:288:9
[INFO] [stdout]   10:     0x558d1edca53e - std::panicking::rust_panic_with_hook::h2bb3722bbaf2f6df
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/panicking.rs:691:13
[INFO] [stdout]   11:     0x558d1edca439 - std::panicking::begin_panic_handler::{{closure}}::h91bc7f36a4be011b
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/panicking.rs:582:13
[INFO] [stdout]   12:     0x558d1edc90f6 - std::sys_common::backtrace::__rust_end_short_backtrace::h8b3d3717114f9e59
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/sys_common/backtrace.rs:150:18
[INFO] [stdout]   13:     0x558d1edca192 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/panicking.rs:578:5
[INFO] [stdout]   14:     0x558d1ed95013 - core::panicking::panic_fmt::hfd368e3fbdabea26
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/core/src/panicking.rs:67:14
[INFO] [stdout]   15:     0x558d1ed954f3 - core::result::unwrap_failed::he54eb4b2f125b26f
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/core/src/result.rs:1687:5
[INFO] [stdout]   16:     0x558d1ed95a4b - core::result::Result<T,E>::unwrap::h1d7b4d074c46c0a0
[INFO] [stdout]   17:     0x558d1ed95f41 - rust_out::main::_doctest_main_src_lib_rs_208_0::h3d16a55f5c62f7b2
[INFO] [stdout]   18:     0x558d1ed95df6 - rust_out::main::h2731449a68dfa004
[INFO] [stdout]   19:     0x558d1ed959b3 - core::ops::function::FnOnce::call_once::hd1715aa1b26fc35c
[INFO] [stdout]   20:     0x558d1ed95706 - std::sys_common::backtrace::__rust_begin_short_backtrace::h8d2b4d09ce515535
[INFO] [stdout]   21:     0x558d1ed95919 - std::rt::lang_start::{{closure}}::hc9a918c63b0dc835
[INFO] [stdout]   22:     0x558d1edc465e - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h2eb19b8ce4148df4
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/core/src/ops/function.rs:287:13
[INFO] [stdout]   23:     0x558d1edc465e - std::panicking::try::do_call::h2e900feff5d504c5
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/panicking.rs:485:40
[INFO] [stdout]   24:     0x558d1edc465e - std::panicking::try::h8854836cb85aa9f2
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/panicking.rs:449:19
[INFO] [stdout]   25:     0x558d1edc465e - std::panic::catch_unwind::h706025dd4c48f64b
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/panic.rs:140:14
[INFO] [stdout]   26:     0x558d1edc465e - std::rt::lang_start_internal::{{closure}}::h7be5b97f4a07a91a
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/rt.rs:148:48
[INFO] [stdout]   27:     0x558d1edc465e - std::panicking::try::do_call::h59847e9d0a176965
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/panicking.rs:485:40
[INFO] [stdout]   28:     0x558d1edc465e - std::panicking::try::h399a918ba8522823
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/panicking.rs:449:19
[INFO] [stdout]   29:     0x558d1edc465e - std::panic::catch_unwind::hca7ca6c55b2a2e26
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/panic.rs:140:14
[INFO] [stdout]   30:     0x558d1edc465e - std::rt::lang_start_internal::h2c807a81560459eb
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/rt.rs:148:20
[INFO] [stdout]   31:     0x558d1ed958f7 - std::rt::lang_start::hc4bd3329ce767e23
[INFO] [stdout]   32:     0x558d1ed964f5 - main
[INFO] [stdout]   33:     0x7f83c4bedd90 - <unknown>
[INFO] [stdout]   34:     0x7f83c4bede40 - __libc_start_main
[INFO] [stdout]   35:     0x558d1ed95635 - _start
[INFO] [stdout]   36:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 208)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 55 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 3.18s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "061fdf0ee1a6db57e4f5e1116060940b3c126d6707e9f07da25ec2e17a239905", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "061fdf0ee1a6db57e4f5e1116060940b3c126d6707e9f07da25ec2e17a239905", kill_on_drop: false }`
[INFO] [stdout] 061fdf0ee1a6db57e4f5e1116060940b3c126d6707e9f07da25ec2e17a239905
