[INFO] cloning repository https://github.com/samarties/leetcode-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/samarties/leetcode-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsamarties%2Fleetcode-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsamarties%2Fleetcode-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b34046a18798738f42075071aea6c0b3db1bc13c
[INFO] testing samarties/leetcode-rust against beta-2021-01-01 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsamarties%2Fleetcode-rust" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/samarties/leetcode-rust on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/samarties/leetcode-rust
[INFO] finished tweaking git repo https://github.com/samarties/leetcode-rust
[INFO] tweaked toml for git repo https://github.com/samarties/leetcode-rust written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/samarties/leetcode-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fc2c71f013143859bc7c59e921ea22fc47da74c8f67e230363374f0826a76177
[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" "fc2c71f013143859bc7c59e921ea22fc47da74c8f67e230363374f0826a76177", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fc2c71f013143859bc7c59e921ea22fc47da74c8f67e230363374f0826a76177", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc2c71f013143859bc7c59e921ea22fc47da74c8f67e230363374f0826a76177", kill_on_drop: false }`
[INFO] [stdout] fc2c71f013143859bc7c59e921ea22fc47da74c8f67e230363374f0826a76177
[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=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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ffab4e89fd6edb001a0d293badc3277fdb8d7596d94ace3946680f959670fce5
[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" "ffab4e89fd6edb001a0d293badc3277fdb8d7596d94ace3946680f959670fce5", kill_on_drop: false }`
[INFO] [stderr]    Compiling playground v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.68s
[INFO] running `Command { std: "docker" "inspect" "ffab4e89fd6edb001a0d293badc3277fdb8d7596d94ace3946680f959670fce5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ffab4e89fd6edb001a0d293badc3277fdb8d7596d94ace3946680f959670fce5", kill_on_drop: false }`
[INFO] [stdout] ffab4e89fd6edb001a0d293badc3277fdb8d7596d94ace3946680f959670fce5
[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=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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0274b3287b9886111aa4dd24034454c4725ed79721d254bd2091fccea23797b2
[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" "0274b3287b9886111aa4dd24034454c4725ed79721d254bd2091fccea23797b2", kill_on_drop: false }`
[INFO] [stderr]    Compiling playground v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.28s
[INFO] running `Command { std: "docker" "inspect" "0274b3287b9886111aa4dd24034454c4725ed79721d254bd2091fccea23797b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0274b3287b9886111aa4dd24034454c4725ed79721d254bd2091fccea23797b2", kill_on_drop: false }`
[INFO] [stdout] 0274b3287b9886111aa4dd24034454c4725ed79721d254bd2091fccea23797b2
[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=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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 731428fd077de42424cbca7123c329c7af3bb94aea867c1a84f7c55cff569c6e
[INFO] running `Command { std: "docker" "start" "-a" "731428fd077de42424cbca7123c329c7af3bb94aea867c1a84f7c55cff569c6e", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/playground-d722aa1e28f7ea1c
[INFO] [stdout] 
[INFO] [stdout] running 76 tests
[INFO] [stdout] test n0015_3_sum::tests::test_empty ... ok
[INFO] [stdout] test n0015_3_sum::tests::test_three_zeros ... ok
[INFO] [stdout] test n0015_3_sum::tests::test_zero ... ok
[INFO] [stdout] test n0016_3_sum_closest::tests::test_doubles ... ok
[INFO] [stdout] test n0016_3_sum_closest::tests::test_negative_target_not_reached ... ok
[INFO] [stdout] test n0016_3_sum_closest::tests::test_negative_target_reached ... ok
[INFO] [stdout] test n0016_3_sum_closest::tests::test_repeated_numbers ... ok
[INFO] [stdout] test n0016_3_sum_closest::tests::test_target_not_reached ... ok
[INFO] [stdout] test n0017_letter_combinations_of_a_phone_number::tests::test_one_digit ... ok
[INFO] [stdout] test n0017_letter_combinations_of_a_phone_number::tests::test_same_digits ... ok
[INFO] [stdout] test n0018_4_sum::tests::test_match ... ok
[INFO] [stdout] test n0018_4_sum::tests::test_repeated_numbers ... ok
[INFO] [stdout] test n0018_4_sum::tests::test_no_matches ... ok
[INFO] [stdout] test n0015_3_sum::tests::test_reuse_nums ... ok
[INFO] [stdout] test n0018_4_sum::tests::test_too_few_nums ... ok
[INFO] [stdout] test n0019_remove_nth_node_from_end_of_list::tests::remove_first ... ok
[INFO] [stdout] test n0016_3_sum_closest::tests::test_target_reached ... ok
[INFO] [stdout] test n0015_3_sum::tests::test_no_triplets ... ok
[INFO] [stdout] test n0015_3_sum::tests::test_no_duplicates ... ok
[INFO] [stdout] test n0015_3_sum::tests::test_two_nums ... ok
[INFO] [stdout] test n0015_3_sum::tests::test_sort ... ok
[INFO] [stdout] test n0017_letter_combinations_of_a_phone_number::tests::test_three_digits ... ok
[INFO] [stdout] test n0017_letter_combinations_of_a_phone_number::tests::test_two_digits ... ok
[INFO] [stdout] test n0019_remove_nth_node_from_end_of_list::tests::remove_last ... ok
[INFO] [stdout] test n0019_remove_nth_node_from_end_of_list::tests::remove_zero ... ok
[INFO] [stdout] test n0019_remove_nth_node_from_end_of_list::tests::single_node ... ok
[INFO] [stdout] test n0020_valid_parantheses::tests::valid_empty ... ok
[INFO] [stdout] test n0020_valid_parantheses::tests::valid_square ... ok
[INFO] [stdout] test n0020_valid_parantheses::tests::valid_list ... ok
[INFO] [stdout] test n0019_remove_nth_node_from_end_of_list::tests::remove_penultimate ... ok
[INFO] [stdout] test n0019_remove_nth_node_from_end_of_list::tests::remove_second ... ok
[INFO] [stdout] test n0020_valid_parantheses::tests::valid_round ... ok
[INFO] [stdout] test n0021_merge_two_sorted_lists::tests::both_empty ... ok
[INFO] [stdout] test n0020_valid_parantheses::tests::invalid_nested ... ok
[INFO] [stdout] test n0020_valid_parantheses::tests::invalid_never_closed ... ok
[INFO] [stdout] test n0020_valid_parantheses::tests::invalid_backwards ... ok
[INFO] [stdout] test n0020_valid_parantheses::tests::valid_curly ... ok
[INFO] [stdout] test n0020_valid_parantheses::tests::valid_nested_list ... ok
[INFO] [stdout] test n0020_valid_parantheses::tests::valid_repeated_nested ... ok
[INFO] [stdout] test n0020_valid_parantheses::tests::valid_nested_pair ... ok
[INFO] [stdout] test n0021_merge_two_sorted_lists::tests::lists_of_different_lengths ... ok
[INFO] [stdout] test n0021_merge_two_sorted_lists::tests::lists_of_equal_length ... ok
[INFO] [stdout] test n0021_merge_two_sorted_lists::tests::not_initially_sorted ... ok
[INFO] [stdout] test n0021_merge_two_sorted_lists::tests::right_list_only ... ok
[INFO] [stdout] test n0022_generate_parantheses::tests::one ... ok
[INFO] [stdout] test n0022_generate_parantheses::tests::two ... ok
[INFO] [stdout] test n0022_generate_parantheses::tests::zero ... ok
[INFO] [stdout] test n0023_merge_k_sorted_lists::tests::no_lists ... ok
[INFO] [stdout] test n0024_swap_nodes_in_pairs::tests::empty ... ok
[INFO] [stdout] test n0024_swap_nodes_in_pairs::tests::odd_pairs ... ok
[INFO] [stdout] test n0024_swap_nodes_in_pairs::tests::one_pair ... ok
[INFO] [stdout] test n0025_reverse_nodes_in_k_group::tests::when_exact ... ok
[INFO] [stdout] test n0021_merge_two_sorted_lists::tests::left_list_only ... ok
[INFO] [stdout] test n0024_swap_nodes_in_pairs::tests::single_node ... ok
[INFO] [stdout] test n0024_swap_nodes_in_pairs::tests::three_pairs ... ok
[INFO] [stdout] test n0024_swap_nodes_in_pairs::tests::two_pairs ... ok
[INFO] [stdout] test n0020_valid_parantheses::tests::invalid_pair ... ok
[INFO] [stdout] test n0026_remove_duplicates_from_sorted_array::tests::example2 ... ok
[INFO] [stdout] test n0025_reverse_nodes_in_k_group::tests::when_one_group ... ok
[INFO] [stdout] test n0026_remove_duplicates_from_sorted_array::tests::example1 ... ok
[INFO] [stdout] test n0026_remove_duplicates_from_sorted_array::tests::all_unique ... ok
[INFO] [stdout] test n0025_reverse_nodes_in_k_group::tests::when_short ... ok
[INFO] [stdout] test n0025_reverse_nodes_in_k_group::tests::when_empty ... ok
[INFO] [stdout] test n0025_reverse_nodes_in_k_group::tests::when_three_group ... ok
[INFO] [stdout] test n0023_merge_k_sorted_lists::tests::two_list ... ok
[INFO] [stdout] test n0025_reverse_nodes_in_k_group::tests::when_two_group ... ok
[INFO] [stdout] test n0022_generate_parantheses::tests::three ... ok
[INFO] [stdout] test n0021_merge_two_sorted_lists::tests::longer_not_initially_sorted ... ok
[INFO] [stdout] test n0026_remove_duplicates_from_sorted_array::tests::empty ... ok
[INFO] [stdout] test n0023_merge_k_sorted_lists::tests::three_lists ... ok
[INFO] [stdout] test n0023_merge_k_sorted_lists::tests::one_list ... ok
[INFO] [stdout] test n0026_remove_duplicates_from_sorted_array::tests::four_repeat ... ok
[INFO] [stdout] test n0026_remove_duplicates_from_sorted_array::tests::negative_nums ... ok
[INFO] [stdout] test n0026_remove_duplicates_from_sorted_array::tests::one_num ... ok
[INFO] [stdout] test n0026_remove_duplicates_from_sorted_array::tests::three_repeat ... ok
[INFO] [stdout] test n0026_remove_duplicates_from_sorted_array::tests::two_repeat ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 76 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/playground-ba6b19aff279c8a8
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests playground
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "731428fd077de42424cbca7123c329c7af3bb94aea867c1a84f7c55cff569c6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "731428fd077de42424cbca7123c329c7af3bb94aea867c1a84f7c55cff569c6e", kill_on_drop: false }`
[INFO] [stdout] 731428fd077de42424cbca7123c329c7af3bb94aea867c1a84f7c55cff569c6e