[INFO] fetching crate believer 0.2.1...
[INFO] testing believer-0.2.1 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate believer 0.2.1 into /workspace/builds/worker-16/source
[INFO] validating manifest of crates.io crate believer 0.2.1 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 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-16/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" "+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-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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] 92dfc232cf3f0b292180660191bc514c9fb72cd0e167da6161df4800a4af1b04
[INFO] running `Command { std: "docker" "start" "-a" "92dfc232cf3f0b292180660191bc514c9fb72cd0e167da6161df4800a4af1b04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "92dfc232cf3f0b292180660191bc514c9fb72cd0e167da6161df4800a4af1b04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92dfc232cf3f0b292180660191bc514c9fb72cd0e167da6161df4800a4af1b04", kill_on_drop: false }`
[INFO] [stdout] 92dfc232cf3f0b292180660191bc514c9fb72cd0e167da6161df4800a4af1b04
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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] a282110e3a87b0bddb5c35fd4da5796420864a94e624ce18e2d5ce1af5ee3595
[INFO] running `Command { std: "docker" "start" "-a" "a282110e3a87b0bddb5c35fd4da5796420864a94e624ce18e2d5ce1af5ee3595", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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 semver-parser v0.7.0
[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 itertools v0.8.1
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling c2-chacha v0.2.2
[INFO] [stderr]    Compiling num_cpus v1.11.1
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling crossbeam-queue v0.1.2
[INFO] [stderr]    Compiling rand_core v0.5.0
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling memoffset v0.5.1
[INFO] [stderr]    Compiling rand v0.7.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.7.2
[INFO] [stderr]    Compiling crossbeam-deque v0.7.1
[INFO] [stderr]    Compiling num v0.2.0
[INFO] [stderr]    Compiling rayon v1.2.0
[INFO] [stderr]    Compiling believer v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 44.29s
[INFO] running `Command { std: "docker" "inspect" "a282110e3a87b0bddb5c35fd4da5796420864a94e624ce18e2d5ce1af5ee3595", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a282110e3a87b0bddb5c35fd4da5796420864a94e624ce18e2d5ce1af5ee3595", kill_on_drop: false }`
[INFO] [stdout] a282110e3a87b0bddb5c35fd4da5796420864a94e624ce18e2d5ce1af5ee3595
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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] f0042494eb9b4382b4d18b42131727782c288211bfac4f99e2509d65433b4c55
[INFO] running `Command { std: "docker" "start" "-a" "f0042494eb9b4382b4d18b42131727782c288211bfac4f99e2509d65433b4c55", kill_on_drop: false }`
[INFO] [stderr]    Compiling believer v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.00s
[INFO] running `Command { std: "docker" "inspect" "f0042494eb9b4382b4d18b42131727782c288211bfac4f99e2509d65433b4c55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0042494eb9b4382b4d18b42131727782c288211bfac4f99e2509d65433b4c55", kill_on_drop: false }`
[INFO] [stdout] f0042494eb9b4382b4d18b42131727782c288211bfac4f99e2509d65433b4c55
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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] 57e5f3a194b3058467e43f046a24fe1d682c1f63fe0c6519f91fb3444341b31d
[INFO] running `Command { std: "docker" "start" "-a" "57e5f3a194b3058467e43f046a24fe1d682c1f63fe0c6519f91fb3444341b31d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.48s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/believer-e7f18005cc8659a3)
[INFO] [stdout] 
[INFO] [stdout] running 50 tests
[INFO] [stdout] test decoders::erasure::test::repetition_code ... ok
[INFO] [stdout] test channel::test::binary_symmetric_channel ... 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::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_check_code ... 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::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_recursion_every_bit_is_adjancent_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::hierarchical_codes::test::generate_single_layer_code ... 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_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_include_the_same_bit_twice_in_a_check ... 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_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 parity_check_matrix::check::test::bitwise_sum ... 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::dot_product ... ok
[INFO] [stdout] test parity_check_matrix::checks_iter::test::checks_iterator_for_empty_matrix ... 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::diagonal_concat_from_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_left_matrix ... ok
[INFO] [stdout] test parity_check_matrix::concatener::test::horizontal_concat_with_equal_length_matrices ... 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::ranker::test::rank_for_a_given_matrix_is_accurate ... 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_the_repetition_code_is_one_less_than_the_number_of_bits ... ok
[INFO] [stdout] test parity_check_matrix::edges_iter::test::edges_iterator ... 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_empty_matrix ... ok
[INFO] [stdout] test parity_check_matrix::transposer::test::tranposition_with_some_empty_tranposed_checks ... ok
[INFO] [stdout] test parity_check_matrix::test::empty_checks_are_removed_on_construction ... ok
[INFO] [stdout] test parity_check_matrix::test::checks_are_sorted_on_construction ... ok
[INFO] [stdout] test parity_check_matrix::transposer::test::transposition_of_empty_matrix ... ok
[INFO] [stdout] test parity_check_matrix::test::syndrome ... ok
[INFO] [stdout] test parity_check_matrix::transposer::test::transposition_of_general_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::there_are_at_least_n_failures_and_n_erasures ... ok
[INFO] [stdout] test decoders::n_events_simulator::test::reproductibility_for_repetition_code ... ok
[INFO] [stdout] test decoders::n_events_simulator::test::reproductibility_for_hamming_code ... ok
[INFO] [stdout] test decoders::n_iterations_simulator::test::reproductibility_for_repetition_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::there_is_n_iterations ... ok
[INFO] [stdout] test generators::best_code_finder::test::reproductibility_for_finding_best_ldpc_code_simulating_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 1.12s
[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 (line 15) ... FAILED
[INFO] [stdout] test src/generators/best_code_finder.rs - generators::best_code_finder::BestCodeFinderUsingErasure::find_best_code_simulating_n_events (line 199) ... FAILED
[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_events_with_rng (line 166) ... 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-05b78ccf432f62a4.rlib --extern itertools=/opt/rustwide/target/debug/deps/libitertools-e9557b84b7e5527e.rlib --extern num=/opt/rustwide/target/debug/deps/libnum-14c58d834269d434.rlib --extern rand=/opt/rustwide/target/debug/deps/librand-c478897b5ccd8f19.rlib --extern rand_chacha=/opt/rustwide/target/debug/deps/librand_chacha-b2c58d1e6b4f58b6.rlib --extern rayon=/opt/rustwide/target/debug/deps/librayon-045dfc26b962e58c.rlib -C embed-bitcode=no --error-format human` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "57e5f3a194b3058467e43f046a24fe1d682c1f63fe0c6519f91fb3444341b31d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57e5f3a194b3058467e43f046a24fe1d682c1f63fe0c6519f91fb3444341b31d", kill_on_drop: false }`
[INFO] [stdout] 57e5f3a194b3058467e43f046a24fe1d682c1f63fe0c6519f91fb3444341b31d