[INFO] updating cached repository https://github.com/jelford/project_euler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b7cdcc12bd242142680e4b73c43fdb1605404b77
[INFO] testing jelford/project_euler against beta-2020-07-24 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjelford%2Fproject_euler" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jelford/project_euler on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jelford/project_euler
[INFO] finished tweaking git repo https://github.com/jelford/project_euler
[INFO] tweaked toml for git repo https://github.com/jelford/project_euler written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/jelford/project_euler already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 98140f841ffe305a8edccf36722df813ea3896cfe875899b9527d24a0e282a82
[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" "98140f841ffe305a8edccf36722df813ea3896cfe875899b9527d24a0e282a82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "98140f841ffe305a8edccf36722df813ea3896cfe875899b9527d24a0e282a82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98140f841ffe305a8edccf36722df813ea3896cfe875899b9527d24a0e282a82", kill_on_drop: false }`
[INFO] [stdout] 98140f841ffe305a8edccf36722df813ea3896cfe875899b9527d24a0e282a82
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 948fb7a860f247a3040978a775cc3c9cef5aa884aef2b7276b565c90ed578069
[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" "948fb7a860f247a3040978a775cc3c9cef5aa884aef2b7276b565c90ed578069", kill_on_drop: false }`
[INFO] [stderr]    Compiling project_euler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/palindromes.rs:66:13
[INFO] [stdout]    |
[INFO] [stdout] 66 |             mem::replace(&mut self.current_digits, updated);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.69s
[INFO] running `Command { std: "docker" "inspect" "948fb7a860f247a3040978a775cc3c9cef5aa884aef2b7276b565c90ed578069", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "948fb7a860f247a3040978a775cc3c9cef5aa884aef2b7276b565c90ed578069", kill_on_drop: false }`
[INFO] [stdout] 948fb7a860f247a3040978a775cc3c9cef5aa884aef2b7276b565c90ed578069
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3543177d42b5f4a0bd17bf10bd897668d55ba2c70dea6c58beaf4dd747ea7d24
[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" "3543177d42b5f4a0bd17bf10bd897668d55ba2c70dea6c58beaf4dd747ea7d24", kill_on_drop: false }`
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/palindromes.rs:66:13
[INFO] [stdout]    |
[INFO] [stdout] 66 |             mem::replace(&mut self.current_digits, updated);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling project_euler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/palindromes.rs:66:13
[INFO] [stdout]    |
[INFO] [stdout] 66 |             mem::replace(&mut self.current_digits, updated);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.62s
[INFO] running `Command { std: "docker" "inspect" "3543177d42b5f4a0bd17bf10bd897668d55ba2c70dea6c58beaf4dd747ea7d24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3543177d42b5f4a0bd17bf10bd897668d55ba2c70dea6c58beaf4dd747ea7d24", kill_on_drop: false }`
[INFO] [stdout] 3543177d42b5f4a0bd17bf10bd897668d55ba2c70dea6c58beaf4dd747ea7d24
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 49ef60a34a20c038371cf2bac9b9ac8dccb383d58cb783114de1db0e5214a8cf
[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" "49ef60a34a20c038371cf2bac9b9ac8dccb383d58cb783114de1db0e5214a8cf", kill_on_drop: false }`
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]   --> src/palindromes.rs:66:13
[INFO] [stderr]    |
[INFO] [stderr] 66 |             mem::replace(&mut self.current_digits, updated);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]   --> src/palindromes.rs:66:13
[INFO] [stderr]    |
[INFO] [stderr] 66 |             mem::replace(&mut self.current_digits, updated);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: if you don't need the old value, you can just assign the new value directly
[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/project_euler-b8c2db0878b95add
[INFO] [stdout] running 61 tests
[INFO] [stdout] test factorization::tests::factors_includes_non_prime_factors ... ok
[INFO] [stdout] test bitset::tests::powerset_of_4_numbers_has_16_elements ... ok
[INFO] [stdout] test factorization::tests::factors_yields_at_least_all_prime_factors ... ok
[INFO] [stdout] test factorization::tests::has_3_digit_factors_correctly_identifies_some_negative_cases ... ok
[INFO] [stdout] test factorization::tests::hpf_of_1_is_1 ... ok
[INFO] [stdout] test factorization::tests::hpf_returns_primes ... ok
[INFO] [stdout] test factorization::tests::prime_factors_can_be_repeated ... ok
[INFO] [stdout] test fib::tests::fibcalc_yields_fib_series ... ok
[INFO] [stdout] test fizzbuzz::tests::is_product_of_3_or_5_false_for_multiples_of_neither ... ok
[INFO] [stdout] test palindromes::tests::all_1_digit_numbers_are_palindromes ... ok
[INFO] [stdout] test factorization::tests::prime_factors_can_be_found_for_small_numbers_with_only_two_factors ... ok
[INFO] [stdout] test palindromes::tests::can_generate_3_digit_palindromes ... ok
[INFO] [stdout] test palindromes::tests::covers_all_length_3_palindromes ... ok
[INFO] [stdout] test palindromes::tests::covers_all_length_5_palindromes ... ok
[INFO] [stdout] test factorization::tests::has_3_digit_factors_correctly_identifies_some_positive_cases ... ok
[INFO] [stdout] test factorization::tests::hpf_finds_two_as_a_factor ... ok
[INFO] [stdout] test factorization::tests::hpf_finds_three_as_a_factor ... ok
[INFO] [stdout] test palindromes::tests::num_from_digits_is_zero_for_empty_digits ... ok
[INFO] [stdout] test palindromes::tests::num_from_digits_works_with_decimals ... ok
[INFO] [stdout] test factorization::tests::hpf_finds_factors_of_large_numbers ... ok
[INFO] [stdout] test palindromes::tests::limit_gives_midpoint_of_vector ... ok
[INFO] [stdout] test fizzbuzz::tests::is_product_of_3_or_5_true_for_multiples_of_five ... ok
[INFO] [stdout] test palindromes::tests::mirror_is_a_noop_for_vec_of_1_lenght ... ok
[INFO] [stdout] test palindromes::tests::step_goes_from_reducing_middle_to_reducing_outside_when_middle_exhausted ... ok
[INFO] [stdout] test bitset::tests::powerset_of_three_numbers_yields_eight_sets ... ok
[INFO] [stdout] test palindromes::tests::palindroms_are_generated_in_descending_order ... ok
[INFO] [stdout] test fizzbuzz::tests::is_product_of_3_or_5_true_for_multiples_of_three ... ok
[INFO] [stdout] test factorization::tests::prime_factors_of_some_primes_are_just_themselves ... ok
[INFO] [stdout] test palindromes::tests::mirror_dupes_elements_with_offset_in_array ... ok
[INFO] [stdout] test factorization::tests::factors_do_not_repeat ... ok
[INFO] [stdout] test bitset::tests::powerset_of_one_element_vector_yields_it_and_an_empty ... ok
[INFO] [stdout] test primes::tests::prime_bag::equality::equality_between_non_primes ... ok
[INFO] [stdout] test primes::tests::prime_bag::mulitplication::multiply_two_prime_bags_combines_factors ... ok
[INFO] [stdout] test palindromes::tests::step_says_its_done_when_reaches_lowest_point ... ok
[INFO] [stdout] test primes::tests::prime_bag::equality::equality_between_primes ... ok
[INFO] [stdout] test palindromes::tests::mirror_is_a_noop_for_mid_point ... ok
[INFO] [stdout] test primes::tests::prime_bag::lowest_common_multiple::lcm_of_prime_bags_with_same_factor_different_number_of_times_takes_the_max ... ok
[INFO] [stdout] test primes::tests::prime_bag::lowest_common_multiple::merging_overlapping_prime_bags_dedups_where_possible ... ok
[INFO] [stdout] test primes::tests::prime_bag::division::division_subtracts_factors ... ok
[INFO] [stdout] test primes::tests::stream_of_primes::stream_of_primes_finished_at_its_upper_bound ... ok
[INFO] [stdout] test primes::tests::prime_bag::lowest_common_multiple::merging_disjoint_prime_bags_leaves_us_with_both_sets_of_primes_merged ... ok
[INFO] [stdout] test palindromes::tests::all_multiples_of_11_are_2_digit_palindromes ... ok
[INFO] [stdout] test primes::tests::stream_of_primes::stream_of_primes_yields_some_primes ... ok
[INFO] [stdout] test pythagorian_triplets::test::some_non_examples_of_pythagorian_triplets ... ok
[INFO] [stdout] test palindromes::tests::mirror_duplicates_first_element_for_vec_len_2 ... ok
[INFO] [stdout] test primes::tests::prime_bag::ordering::ordering_between_numbers_same_number_of_factors ... ok
[INFO] [stdout] test pythagorian_triplets::test::some_pythagorian_triplets ... ok
[INFO] [stdout] test series::tests::sum_of_i_is_correct_for_some_mid_size_numbers ... ok
[INFO] [stdout] test series::tests::sum_of_squares_base_cases ... ok
[INFO] [stdout] test primes::tests::prime_bag::ordering::ordering_with_large_numb ... ok
[INFO] [stdout] test primes::tests::stream_of_primes::stream_of_primes_yields_primes_including_max ... ok
[INFO] [stdout] test palindromes::tests::step_reduces_both_numbers_if_two_digits ... ok
[INFO] [stdout] test palindromes::tests::step_on_single_digit_decrements ... ok
[INFO] [stdout] test palindromes::tests::step_reduces_less_significant_digits_first ... ok
[INFO] [stdout] test primes::tests::prime_bag::equality::equality_between_different_expressions_of_same_number ... ok
[INFO] [stdout] test primes::tests::prime_bag::ordering::ordering_between_numbers_repeated_factors ... ok
[INFO] [stdout] test series::tests::sum_of_i_base_cases ... ok
[INFO] [stdout] test series::tests::sum_of_squares_is_correct_for_some_mid_sized_numbers ... ok
[INFO] [stdout] test pythagorian_triplets::test::all_returned_pythagpoints_are_pythagorian_triplets ... ok
[INFO] [stdout] test factorization::tests::prime_factor_of_large_prime_can_be_found_as_itself ... ok
[INFO] [stdout] test primes::tests::stream_of_primes::streame_of_primes_remains_accurrate_for_large_numbers ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 61 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/project_euler-24ee3b19ef2d4e97
[INFO] [stderr]    Doc-tests project_euler
[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] [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" "49ef60a34a20c038371cf2bac9b9ac8dccb383d58cb783114de1db0e5214a8cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49ef60a34a20c038371cf2bac9b9ac8dccb383d58cb783114de1db0e5214a8cf", kill_on_drop: false }`
[INFO] [stdout] 49ef60a34a20c038371cf2bac9b9ac8dccb383d58cb783114de1db0e5214a8cf