[INFO] fetching crate believer 0.2.1...
[INFO] testing believer-0.2.1 against try#d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2 for pr-86479
[INFO] extracting crate believer 0.2.1 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate believer 0.2.1 on toolchain d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate believer 0.2.1
[INFO] finished tweaking crates.io crate believer 0.2.1
[INFO] tweaked toml for crates.io crate believer 0.2.1 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate believer 0.2.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded crossbeam-utils v0.6.6
[INFO] [stderr]   Downloaded crossbeam-queue v0.1.2
[INFO] [stderr]   Downloaded rayon v1.2.0
[INFO] [stderr]   Downloaded num-complex v0.2.3
[INFO] [stderr]   Downloaded crossbeam-deque v0.7.1
[INFO] [stderr]   Downloaded autocfg v0.1.5
[INFO] [stderr]   Downloaded num-iter v0.1.39
[INFO] [stderr]   Downloaded wasi v0.5.0
[INFO] [stderr]   Downloaded getrandom v0.1.9
[INFO] [stderr]   Downloaded hermit-abi v0.1.3
[INFO] [stderr]   Downloaded itertools v0.8.1
[INFO] [stderr]   Downloaded crossbeam-epoch v0.7.2
[INFO] [stderr]   Downloaded num_cpus v1.11.1
[INFO] [stderr]   Downloaded num-bigint v0.2.2
[INFO] [stderr]   Downloaded rand v0.7.0
[INFO] [stderr]   Downloaded either v1.5.3
[INFO] [stderr]   Downloaded num-rational v0.2.2
[INFO] [stderr]   Downloaded lazy_static v1.3.0
[INFO] [stderr]   Downloaded num v0.2.0
[INFO] [stderr]   Downloaded rand_core v0.5.0
[INFO] [stderr]   Downloaded memoffset v0.5.1
[INFO] [stderr]   Downloaded rayon-core v1.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fffe4ec74b7c753b33a7330db2ed0beccc07276ee199ed897832c30cc75cd305
[INFO] running `Command { std: "docker" "start" "-a" "fffe4ec74b7c753b33a7330db2ed0beccc07276ee199ed897832c30cc75cd305", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fffe4ec74b7c753b33a7330db2ed0beccc07276ee199ed897832c30cc75cd305", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fffe4ec74b7c753b33a7330db2ed0beccc07276ee199ed897832c30cc75cd305", kill_on_drop: false }`
[INFO] [stdout] fffe4ec74b7c753b33a7330db2ed0beccc07276ee199ed897832c30cc75cd305
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=forbid" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9b9f5cc6bf2399aa25da78acee699c9370beeea987a6c161be0cc5883bce8df5
[INFO] running `Command { std: "docker" "start" "-a" "9b9f5cc6bf2399aa25da78acee699c9370beeea987a6c161be0cc5883bce8df5", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.5
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling lazy_static v1.3.0
[INFO] [stderr]    Compiling arrayvec v0.4.11
[INFO] [stderr]    Compiling getrandom v0.1.9
[INFO] [stderr]    Compiling nodrop v0.1.13
[INFO] [stderr]    Compiling num-bigint v0.2.2
[INFO] [stderr]    Compiling ppv-lite86 v0.2.5
[INFO] [stderr]    Compiling rayon-core v1.6.0
[INFO] [stderr]    Compiling itertools v0.8.1
[INFO] [stderr]    Compiling crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling c2-chacha v0.2.2
[INFO] [stderr]    Compiling crossbeam-queue v0.1.2
[INFO] [stderr]    Compiling memoffset v0.5.1
[INFO] [stderr]    Compiling num_cpus v1.11.1
[INFO] [stderr]    Compiling rand_core v0.5.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.7.2
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling crossbeam-deque v0.7.1
[INFO] [stderr]    Compiling rand v0.7.0
[INFO] [stderr]    Compiling rayon v1.2.0
[INFO] [stderr]    Compiling num v0.2.0
[INFO] [stderr]    Compiling believer v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.69s
[INFO] running `Command { std: "docker" "inspect" "9b9f5cc6bf2399aa25da78acee699c9370beeea987a6c161be0cc5883bce8df5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b9f5cc6bf2399aa25da78acee699c9370beeea987a6c161be0cc5883bce8df5", kill_on_drop: false }`
[INFO] [stdout] 9b9f5cc6bf2399aa25da78acee699c9370beeea987a6c161be0cc5883bce8df5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=forbid" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c5e31fcbe3f58b75363f9259931f0df815a0eda1d5cfc6cc704bd4c637bb3397
[INFO] running `Command { std: "docker" "start" "-a" "c5e31fcbe3f58b75363f9259931f0df815a0eda1d5cfc6cc704bd4c637bb3397", kill_on_drop: false }`
[INFO] [stderr]    Compiling believer v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.79s
[INFO] running `Command { std: "docker" "inspect" "c5e31fcbe3f58b75363f9259931f0df815a0eda1d5cfc6cc704bd4c637bb3397", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5e31fcbe3f58b75363f9259931f0df815a0eda1d5cfc6cc704bd4c637bb3397", kill_on_drop: false }`
[INFO] [stdout] c5e31fcbe3f58b75363f9259931f0df815a0eda1d5cfc6cc704bd4c637bb3397
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=forbid" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e1bf06df2c991c84b751527969bab01d7f8f4ada2d651b22c730a02de82e2a99
[INFO] running `Command { std: "docker" "start" "-a" "e1bf06df2c991c84b751527969bab01d7f8f4ada2d651b22c730a02de82e2a99", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/believer-d05a2855f01cfdac)
[INFO] [stdout] 
[INFO] [stdout] running 50 tests
[INFO] [stdout] test generators::random_checks::adjacency::test::with_one_full_check_and_one_level_of_recursions_every_bit_has_all_adjacent_bits ... ok
[INFO] [stdout] test decoders::erasure::test::hamming_code ... ok
[INFO] [stdout] test channel::test::binary_symmetric_channel ... ok
[INFO] [stdout] test generators::random_checks::generator::test::a_generator_does_not_create_cycle_of_length_two_four_and_six_if_minimal_girth_is_eight ... ok
[INFO] [stdout] test generators::random_checks::generator::test::a_generator_does_not_generate_checks_of_degree_less_than_minimal_check_degree ... ok
[INFO] [stdout] test decoders::erasure::test::repetition_code ... ok
[INFO] [stdout] test generators::hierarchical_codes::test::generate_single_check_code ... ok
[INFO] [stdout] test generators::random_checks::generator::test::a_generator_does_not_include_the_same_bit_twice_in_a_check ... ok
[INFO] [stdout] test generators::hierarchical_codes::test::default_constructor_generate_empty_code ... ok
[INFO] [stdout] test generators::hierarchical_codes::test::generate_single_layer_code ... ok
[INFO] [stdout] test generators::random_checks::adjacency::test::with_few_checks_and_two_level_of_recursions_every_bit_has_some_adjacent_bits ... ok
[INFO] [stdout] test generators::random_checks::adjacency::test::without_check_every_bit_is_adjacent_only_to_itself ... ok
[INFO] [stdout] test generators::random_checks::generator::test::a_generator_can_generate_check_according_to_a_bit_distribution ... ok
[INFO] [stdout] test generators::random_checks::generator::test::a_generator_does_not_create_cycle_of_length_two_and_four_if_minimal_girth_is_six ... ok
[INFO] [stdout] test generators::random_checks::adjacency::test::without_recursion_every_bit_is_adjancent_only_to_itself ... ok
[INFO] [stdout] test parity_check_matrix::concatener::test::diagonal_concat_with_empty_matrix ... ok
[INFO] [stdout] test parity_check_matrix::edges_iter::test::edges_iterator ... ok
[INFO] [stdout] test parity_check_matrix::ranker::test::rank_for_a_given_matrix_is_accurate ... ok
[INFO] [stdout] test parity_check_matrix::test::checks_are_sorted_on_construction ... ok
[INFO] [stdout] test parity_check_matrix::test::syndrome ... ok
[INFO] [stdout] test parity_check_matrix::transposer::test::transposition_of_empty_matrix ... ok
[INFO] [stdout] test generators::random_checks::generator::test::an_empty_generator_does_not_generate_checks ... ok
[INFO] [stdout] test parity_check_matrix::checks_iter::test::checks_iterator ... ok
[INFO] [stdout] test generators::random_checks::generator::test::a_generator_does_not_exceed_bit_maximal_degree ... ok
[INFO] [stdout] test parity_check_matrix::concatener::test::diagonal_concat_from_empty_matrix ... ok
[INFO] [stdout] test parity_check_matrix::check::test::bitwise_sum ... ok
[INFO] [stdout] test parity_check_matrix::check::test::dot_product ... ok
[INFO] [stdout] test parity_check_matrix::ranker::test::rank_for_the_repetition_code_is_one_less_than_the_number_of_bits ... ok
[INFO] [stdout] test decoders::n_events_simulator::test::reproductibility_for_hamming_code ... ok
[INFO] [stdout] test parity_check_matrix::ranker::test::rank_for_empty_matrix_is_zero ... ok
[INFO] [stdout] test parity_check_matrix::checks_iter::test::checks_iterator_for_empty_matrix ... ok
[INFO] [stdout] test decoders::n_events_simulator::test::there_are_at_least_n_failures_and_n_erasures ... ok
[INFO] [stdout] test generators::random_checks::generator::test::non_full_check_can_be_set_to_be_allowed ... ok
[INFO] [stdout] test parity_check_matrix::concatener::test::horizontal_concat_with_empty_matrix ... ok
[INFO] [stdout] test parity_check_matrix::concatener::test::diagonal_concat ... ok
[INFO] [stdout] test parity_check_matrix::test::empty_checks_are_removed_on_construction ... ok
[INFO] [stdout] test parity_check_matrix::ranker::test::rank_for_a_full_rank_matrix_is_the_number_of_checks ... ok
[INFO] [stdout] test parity_check_matrix::concatener::test::horizontal_concat_with_smaller_right_matrix ... ok
[INFO] [stdout] test parity_check_matrix::concatener::test::horizontal_concat_with_smaller_left_matrix ... ok
[INFO] [stdout] test parity_check_matrix::concatener::test::horizontal_concat_with_equal_length_matrices ... ok
[INFO] [stdout] test parity_check_matrix::transposer::test::tranposition_with_some_empty_tranposed_checks ... ok
[INFO] [stdout] test parity_check_matrix::concatener::test::horizontal_concat_from_empty_matrix ... ok
[INFO] [stdout] test parity_check_matrix::transposer::test::transposition_of_general_matrix ... ok
[INFO] [stdout] test decoders::n_iterations_simulator::test::reproductibility_for_repetition_code ... ok
[INFO] [stdout] test decoders::n_iterations_simulator::test::there_is_n_iterations ... ok
[INFO] [stdout] test decoders::n_events_simulator::test::reproductibility_for_repetition_code ... ok
[INFO] [stdout] test decoders::n_iterations_simulator::test::reproductibility_for_hamming_code ... ok
[INFO] [stdout] test generators::best_code_finder::test::reproductibility_for_finding_best_ldpc_code_simulating_n_iterations ... ok
[INFO] [stdout] test parity_check_matrix::test::panics_on_construction_if_checks_are_out_of_bound - should panic ... ok
[INFO] [stdout] test generators::best_code_finder::test::reproductibility_for_finding_best_ldpc_code_simulating_n_events ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 50 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.66s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests believer
[INFO] [stdout] 
[INFO] [stdout] running 48 tests
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name believer --test /opt/rustwide/workdir/src/lib.rs -L dependency=/opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern believer=/opt/rustwide/target/debug/deps/libbeliever-3bd1a435a45a1893.rlib --extern itertools=/opt/rustwide/target/debug/deps/libitertools-8ff78c6a1ea242c7.rlib --extern num=/opt/rustwide/target/debug/deps/libnum-0bed3ff1298a8c8d.rlib --extern rand=/opt/rustwide/target/debug/deps/librand-b7c32290e18070a5.rlib --extern rand_chacha=/opt/rustwide/target/debug/deps/librand_chacha-9e4afac1a2654604.rlib --extern rayon=/opt/rustwide/target/debug/deps/librayon-c6a994e39576f808.rlib -C embed-bitcode=no --error-format human` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "e1bf06df2c991c84b751527969bab01d7f8f4ada2d651b22c730a02de82e2a99", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1bf06df2c991c84b751527969bab01d7f8f4ada2d651b22c730a02de82e2a99", kill_on_drop: false }`
[INFO] [stdout] e1bf06df2c991c84b751527969bab01d7f8f4ada2d651b22c730a02de82e2a99