[INFO] fetching crate believer 0.2.1...
[INFO] testing believer-0.2.1 against 1.55.0 for beta-1.56-1
[INFO] extracting crate believer 0.2.1 into /workspace/builds/worker-49/source
[INFO] validating manifest of crates.io crate believer 0.2.1 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-49/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" "+1.55.0" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded crossbeam-utils v0.6.6
[INFO] [stderr]   Downloaded lazy_static v1.3.0
[INFO] [stderr]   Downloaded rayon-core v1.6.0
[INFO] [stderr]   Downloaded itertools v0.8.1
[INFO] [stderr]   Downloaded autocfg v0.1.5
[INFO] [stderr]   Downloaded rand v0.7.0
[INFO] [stderr]   Downloaded num-iter v0.1.39
[INFO] [stderr]   Downloaded crossbeam-epoch v0.7.2
[INFO] [stderr]   Downloaded num-complex v0.2.3
[INFO] [stderr]   Downloaded rand_core v0.5.0
[INFO] [stderr]   Downloaded num-bigint v0.2.2
[INFO] [stderr]   Downloaded hermit-abi v0.1.3
[INFO] [stderr]   Downloaded num v0.2.0
[INFO] [stderr]   Downloaded crossbeam-queue v0.1.2
[INFO] [stderr]   Downloaded either v1.5.3
[INFO] [stderr]   Downloaded wasi v0.5.0
[INFO] [stderr]   Downloaded memoffset v0.5.1
[INFO] [stderr]   Downloaded num-rational v0.2.2
[INFO] [stderr]   Downloaded rayon v1.2.0
[INFO] [stderr]   Downloaded getrandom v0.1.9
[INFO] [stderr]   Downloaded crossbeam-deque v0.7.1
[INFO] [stderr]   Downloaded num_cpus v1.11.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/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" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 637f082d491cde2dfe8db0efcb6f0ddb42459f680103e13b8a46546bbb283ef7
[INFO] running `Command { std: "docker" "start" "-a" "637f082d491cde2dfe8db0efcb6f0ddb42459f680103e13b8a46546bbb283ef7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "637f082d491cde2dfe8db0efcb6f0ddb42459f680103e13b8a46546bbb283ef7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "637f082d491cde2dfe8db0efcb6f0ddb42459f680103e13b8a46546bbb283ef7", kill_on_drop: false }`
[INFO] [stdout] 637f082d491cde2dfe8db0efcb6f0ddb42459f680103e13b8a46546bbb283ef7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/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" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 69c38414e2a2117ce51cd2f026177fafddae03a067238103c7794bbb82dcbf20
[INFO] running `Command { std: "docker" "start" "-a" "69c38414e2a2117ce51cd2f026177fafddae03a067238103c7794bbb82dcbf20", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.5
[INFO] [stderr]    Compiling cfg-if v0.1.9
[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 scopeguard v1.0.0
[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 either v1.5.3
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling itertools v0.8.1
[INFO] [stderr]    Compiling c2-chacha v0.2.2
[INFO] [stderr]    Compiling memoffset v0.5.1
[INFO] [stderr]    Compiling crossbeam-queue v0.1.2
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling num_cpus v1.11.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.7.2
[INFO] [stderr]    Compiling rand_core v0.5.0
[INFO] [stderr]    Compiling crossbeam-deque v0.7.1
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[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 38.13s
[INFO] running `Command { std: "docker" "inspect" "69c38414e2a2117ce51cd2f026177fafddae03a067238103c7794bbb82dcbf20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69c38414e2a2117ce51cd2f026177fafddae03a067238103c7794bbb82dcbf20", kill_on_drop: false }`
[INFO] [stdout] 69c38414e2a2117ce51cd2f026177fafddae03a067238103c7794bbb82dcbf20
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/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" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5ad6e9d20c9f689e501cd2daa1d1593b36b8e91eb799a2abd21cb6f8a73dc5a6
[INFO] running `Command { std: "docker" "start" "-a" "5ad6e9d20c9f689e501cd2daa1d1593b36b8e91eb799a2abd21cb6f8a73dc5a6", kill_on_drop: false }`
[INFO] [stderr]    Compiling believer v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.61s
[INFO] running `Command { std: "docker" "inspect" "5ad6e9d20c9f689e501cd2daa1d1593b36b8e91eb799a2abd21cb6f8a73dc5a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ad6e9d20c9f689e501cd2daa1d1593b36b8e91eb799a2abd21cb6f8a73dc5a6", kill_on_drop: false }`
[INFO] [stdout] 5ad6e9d20c9f689e501cd2daa1d1593b36b8e91eb799a2abd21cb6f8a73dc5a6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/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" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] eba98df874caa31ccbb2b967c38efdbe1076529781b4ad4e3305f639fae5d151
[INFO] running `Command { std: "docker" "start" "-a" "eba98df874caa31ccbb2b967c38efdbe1076529781b4ad4e3305f639fae5d151", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.50s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/believer-3197433c5b97cfdf)
[INFO] [stdout] 
[INFO] [stdout] running 50 tests
[INFO] [stdout] test channel::test::binary_symmetric_channel ... ok
[INFO] [stdout] test decoders::erasure::test::repetition_code ... ok
[INFO] [stdout] test decoders::erasure::test::hamming_code ... ok
[INFO] [stdout] test generators::hierarchical_codes::test::default_constructor_generate_empty_code ... ok
[INFO] [stdout] test generators::hierarchical_codes::test::generate_single_check_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::hierarchical_codes::test::generate_single_layer_code ... ok
[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 generators::random_checks::adjacency::test::without_check_every_bit_is_adjacent_only_to_itself ... ok
[INFO] [stdout] test generators::random_checks::adjacency::test::without_recursion_every_bit_is_adjancent_only_to_itself ... ok
[INFO] [stdout] test generators::random_checks::generator::test::a_generator_does_not_exceed_bit_maximal_degree ... 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::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 generators::random_checks::generator::test::an_empty_generator_does_not_generate_checks ... ok
[INFO] [stdout] test generators::random_checks::generator::test::a_generator_can_generate_check_according_to_a_bit_distribution ... ok
[INFO] [stdout] test parity_check_matrix::check::test::dot_product ... 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::checks_iter::test::checks_iterator ... ok
[INFO] [stdout] test parity_check_matrix::check::test::bitwise_sum ... ok
[INFO] [stdout] test parity_check_matrix::concatener::test::diagonal_concat ... ok
[INFO] [stdout] test parity_check_matrix::concatener::test::diagonal_concat_with_empty_matrix ... ok
[INFO] [stdout] test parity_check_matrix::concatener::test::horizontal_concat_from_empty_matrix ... 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_empty_matrix ... ok
[INFO] [stdout] test parity_check_matrix::concatener::test::diagonal_concat_from_empty_matrix ... ok
[INFO] [stdout] test parity_check_matrix::checks_iter::test::checks_iterator_for_empty_matrix ... ok
[INFO] [stdout] test parity_check_matrix::concatener::test::horizontal_concat_with_equal_length_matrices ... 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 parity_check_matrix::ranker::test::rank_for_a_full_rank_matrix_is_the_number_of_checks ... ok
[INFO] [stdout] test parity_check_matrix::edges_iter::test::edges_iterator ... ok
[INFO] [stdout] test parity_check_matrix::ranker::test::rank_for_empty_matrix_is_zero ... ok
[INFO] [stdout] test parity_check_matrix::ranker::test::rank_for_a_given_matrix_is_accurate ... 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 parity_check_matrix::test::checks_are_sorted_on_construction ... ok
[INFO] [stdout] test parity_check_matrix::transposer::test::tranposition_with_some_empty_tranposed_checks ... ok
[INFO] [stdout] test parity_check_matrix::test::syndrome ... ok
[INFO] [stdout] test parity_check_matrix::test::empty_checks_are_removed_on_construction ... ok
[INFO] [stdout] test parity_check_matrix::transposer::test::transposition_of_general_matrix ... ok
[INFO] [stdout] test parity_check_matrix::transposer::test::transposition_of_empty_matrix ... ok
[INFO] [stdout] test parity_check_matrix::test::panics_on_construction_if_checks_are_out_of_bound - should panic ... ok
[INFO] [stdout] test decoders::n_events_simulator::test::reproductibility_for_repetition_code ... ok
[INFO] [stdout] test decoders::n_events_simulator::test::there_are_at_least_n_failures_and_n_erasures ... ok
[INFO] [stdout] test generators::best_code_finder::test::reproductibility_for_finding_best_ldpc_code_simulating_n_iterations ... ok
[INFO] [stdout] test decoders::n_events_simulator::test::reproductibility_for_hamming_code ... ok
[INFO] [stdout] test generators::best_code_finder::test::reproductibility_for_finding_best_ldpc_code_simulating_n_events ... 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_iterations_simulator::test::reproductibility_for_hamming_code ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 50 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.64s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests believer
[INFO] [stdout] 
[INFO] [stdout] running 48 tests
[INFO] [stdout] test src/generators/best_code_finder.rs - generators::best_code_finder::BestCodeFinderUsingErasure::find_best_code_simulating_n_iterations (line 139) ... FAILED
[INFO] [stdout] test src/generators/best_code_finder.rs - generators::best_code_finder::BestCodeFinderUsingErasure::find_best_code_simulating_n_iterations_with_rng (line 107) ... FAILED
[INFO] [stdout] test src/generators/best_code_finder.rs - generators::best_code_finder::BestCodeFinderUsingErasure (line 15) ... FAILED
[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-3a4f9e233cd14dd3.rlib --extern itertools=/opt/rustwide/target/debug/deps/libitertools-47b38ef8e7f15df5.rlib --extern num=/opt/rustwide/target/debug/deps/libnum-4794a15fc34d0449.rlib --extern rand=/opt/rustwide/target/debug/deps/librand-c81f397e967c751f.rlib --extern rand_chacha=/opt/rustwide/target/debug/deps/librand_chacha-89ccd30b5b2087e0.rlib --extern rayon=/opt/rustwide/target/debug/deps/librayon-2e6c4ef78a357464.rlib -C embed-bitcode=no --error-format human` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "eba98df874caa31ccbb2b967c38efdbe1076529781b4ad4e3305f639fae5d151", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eba98df874caa31ccbb2b967c38efdbe1076529781b4ad4e3305f639fae5d151", kill_on_drop: false }`
[INFO] [stdout] eba98df874caa31ccbb2b967c38efdbe1076529781b4ad4e3305f639fae5d151