[INFO] cloning repository https://github.com/YangchenYe323/mini-lsm-private [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/YangchenYe323/mini-lsm-private" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYangchenYe323%2Fmini-lsm-private", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYangchenYe323%2Fmini-lsm-private'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 0570694db29c37c443e78e79c3464b2f92585726 [INFO] testing YangchenYe323/mini-lsm-private against 1.77.0 for beta-1.78-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYangchenYe323%2Fmini-lsm-private" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/YangchenYe323/mini-lsm-private on toolchain 1.77.0 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.77.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] removed /workspace/builds/worker-6-tc1/source/.cargo/config.toml [INFO] removed /workspace/builds/worker-6-tc1/source/rust-toolchain.toml [INFO] started tweaking git repo https://github.com/YangchenYe323/mini-lsm-private [INFO] finished tweaking git repo https://github.com/YangchenYe323/mini-lsm-private [INFO] tweaked toml for git repo https://github.com/YangchenYe323/mini-lsm-private written to /workspace/builds/worker-6-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/YangchenYe323/mini-lsm-private already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.77.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded endian-type v0.1.2 [INFO] [stderr] Downloaded error-code v3.0.0 [INFO] [stderr] Downloaded nibble_vec v0.1.0 [INFO] [stderr] Downloaded rustyline v13.0.0 [INFO] [stderr] Downloaded clipboard-win v5.0.0 [INFO] [stderr] Downloaded proc-macro2 v1.0.76 [INFO] [stderr] Downloaded terminal_size v0.1.17 [INFO] [stderr] Downloaded console v0.15.2 [INFO] [stderr] Downloaded duct v0.13.6 [INFO] [stderr] Downloaded bytes v1.3.0 [INFO] [stderr] Downloaded pulldown-cmark v0.9.2 [INFO] [stderr] Downloaded moka v0.9.6 [INFO] [stderr] Downloaded itertools v0.12.0 [INFO] [stderr] Downloaded nix v0.27.1 [INFO] [stderr] Downloaded radix_trie v0.2.1 [INFO] [stderr] Downloaded arc-swap v1.5.1 [INFO] [stderr] Downloaded crossbeam-skiplist v0.1.0 [INFO] [stderr] Downloaded raw-cpuid v10.6.0 [INFO] [stderr] Downloaded quanta v0.10.1 [INFO] [stderr] Downloaded camino v1.1.1 [INFO] [stderr] Downloaded triomphe v0.1.8 [INFO] [stderr] Downloaded error-chain v0.12.4 [INFO] [stderr] Downloaded tagptr v0.2.0 [INFO] [stderr] Downloaded yansi v1.0.0-rc.1 [INFO] [stderr] Downloaded ouroboros v0.18.2 [INFO] [stderr] Downloaded os_pipe v1.1.2 [INFO] [stderr] Downloaded shared_child v1.0.0 [INFO] [stderr] Downloaded scheduled-thread-pool v0.2.6 [INFO] [stderr] Downloaded bytecount v0.6.3 [INFO] [stderr] Downloaded skeptic v0.13.7 [INFO] [stderr] Downloaded proc-macro2-diagnostics v0.10.1 [INFO] [stderr] Downloaded ouroboros_macro v0.18.2 [INFO] [stderr] Downloaded farmhash v1.1.5 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.77.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 158bdf50bcb94f62a2d104b6df6c57b4b41e949a2aee863b4cec81f36ee9076c [INFO] running `Command { std: "docker" "start" "-a" "158bdf50bcb94f62a2d104b6df6c57b4b41e949a2aee863b4cec81f36ee9076c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "158bdf50bcb94f62a2d104b6df6c57b4b41e949a2aee863b4cec81f36ee9076c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "158bdf50bcb94f62a2d104b6df6c57b4b41e949a2aee863b4cec81f36ee9076c", kill_on_drop: false }` [INFO] [stdout] 158bdf50bcb94f62a2d104b6df6c57b4b41e949a2aee863b4cec81f36ee9076c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.77.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 0f59106e36027fabf38a991531ac3ca4fe694be405b0d54d5576a18579a73cae [INFO] running `Command { std: "docker" "start" "-a" "0f59106e36027fabf38a991531ac3ca4fe694be405b0d54d5576a18579a73cae", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.152 [INFO] [stderr] Compiling proc-macro2 v1.0.76 [INFO] [stderr] Compiling unicode-ident v1.0.6 [INFO] [stderr] Compiling syn v1.0.107 [INFO] [stderr] Compiling crossbeam-utils v0.8.19 [INFO] [stderr] Compiling utf8parse v0.2.1 [INFO] [stderr] Compiling memoffset v0.7.1 [INFO] [stderr] Compiling heck v0.4.1 [INFO] [stderr] Compiling parking_lot_core v0.9.5 [INFO] [stderr] Compiling proc-macro2-diagnostics v0.10.1 [INFO] [stderr] Compiling anstyle-parse v0.2.3 [INFO] [stderr] Compiling crossbeam-epoch v0.9.13 [INFO] [stderr] Compiling rustix v0.38.30 [INFO] [stderr] Compiling anstyle v1.0.4 [INFO] [stderr] Compiling colorchoice v1.0.0 [INFO] [stderr] Compiling bitflags v2.4.2 [INFO] [stderr] Compiling anstyle-query v1.0.2 [INFO] [stderr] Compiling serde_derive v1.0.151 [INFO] [stderr] Compiling anstream v0.6.7 [INFO] [stderr] Compiling either v1.9.0 [INFO] [stderr] Compiling anyhow v1.0.68 [INFO] [stderr] Compiling thiserror v1.0.38 [INFO] [stderr] Compiling yansi v1.0.0-rc.1 [INFO] [stderr] Compiling quote v1.0.35 [INFO] [stderr] Compiling clap_lex v0.6.0 [INFO] [stderr] Compiling serde v1.0.151 [INFO] [stderr] Compiling unicode-width v0.1.10 [INFO] [stderr] Compiling linux-raw-sys v0.4.13 [INFO] [stderr] Compiling syn v2.0.48 [INFO] [stderr] Compiling clap_builder v4.4.17 [INFO] [stderr] Compiling raw-cpuid v10.6.0 [INFO] [stderr] Compiling itertools v0.12.0 [INFO] [stderr] Compiling nibble_vec v0.1.0 [INFO] [stderr] Compiling serde_json v1.0.91 [INFO] [stderr] Compiling getrandom v0.2.8 [INFO] [stderr] Compiling parking_lot v0.12.1 [INFO] [stderr] Compiling rand_core v0.6.4 [INFO] [stderr] Compiling crossbeam-skiplist v0.1.0 [INFO] [stderr] Compiling endian-type v0.1.2 [INFO] [stderr] Compiling moka v0.9.6 [INFO] [stderr] Compiling rand_chacha v0.3.1 [INFO] [stderr] Compiling radix_trie v0.2.1 [INFO] [stderr] Compiling scheduled-thread-pool v0.2.6 [INFO] [stderr] Compiling quanta v0.10.1 [INFO] [stderr] Compiling uuid v1.2.2 [INFO] [stderr] Compiling num_cpus v1.15.0 [INFO] [stderr] Compiling fd-lock v4.0.2 [INFO] [stderr] Compiling nix v0.27.1 [INFO] [stderr] Compiling crossbeam-channel v0.5.11 [INFO] [stderr] Compiling home v0.5.9 [INFO] [stderr] Compiling static_assertions v1.1.0 [INFO] [stderr] Compiling ryu v1.0.12 [INFO] [stderr] Compiling minimal-lexical v0.2.1 [INFO] [stderr] Compiling thiserror-impl v1.0.38 [INFO] [stderr] Compiling tagptr v0.2.0 [INFO] [stderr] Compiling unicode-segmentation v1.10.1 [INFO] [stderr] Compiling triomphe v0.1.8 [INFO] [stderr] Compiling itoa v1.0.5 [INFO] [stderr] Compiling aliasable v0.1.3 [INFO] [stderr] Compiling nom v7.1.3 [INFO] [stderr] Compiling rand v0.8.5 [INFO] [stderr] Compiling arc-swap v1.5.1 [INFO] [stderr] Compiling farmhash v1.1.5 [INFO] [stderr] Compiling bytes v1.3.0 [INFO] [stderr] Compiling crc32fast v1.3.2 [INFO] [stderr] Compiling clap_derive v4.4.7 [INFO] [stderr] Compiling ouroboros_macro v0.18.2 [INFO] [stderr] Compiling rustyline v13.0.0 [INFO] [stderr] Compiling os_pipe v1.1.2 [INFO] [stderr] Compiling shared_child v1.0.0 [INFO] [stderr] Compiling terminal_size v0.1.17 [INFO] [stderr] Compiling console v0.15.2 [INFO] [stderr] Compiling duct v0.13.6 [INFO] [stderr] Compiling ouroboros v0.18.2 [INFO] [stderr] Compiling clap v4.4.17 [INFO] [stderr] Compiling mini-lsm-xtask v0.2.0 (/opt/rustwide/workdir/xtask) [INFO] [stderr] Compiling mini-lsm-starter v0.2.0 (/opt/rustwide/workdir/mini-lsm-starter) [INFO] [stderr] Compiling mini-lsm v0.2.0 (/opt/rustwide/workdir/mini-lsm) [INFO] [stderr] Compiling mini-lsm-mvcc v0.2.0 (/opt/rustwide/workdir/mini-lsm-mvcc) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 37.55s [INFO] running `Command { std: "docker" "inspect" "0f59106e36027fabf38a991531ac3ca4fe694be405b0d54d5576a18579a73cae", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0f59106e36027fabf38a991531ac3ca4fe694be405b0d54d5576a18579a73cae", kill_on_drop: false }` [INFO] [stdout] 0f59106e36027fabf38a991531ac3ca4fe694be405b0d54d5576a18579a73cae [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.77.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] e2fcbce90fc5061b4f177334f8d1a4379b357e812bf2041544e3c137efae22d8 [INFO] running `Command { std: "docker" "start" "-a" "e2fcbce90fc5061b4f177334f8d1a4379b357e812bf2041544e3c137efae22d8", kill_on_drop: false }` [INFO] [stderr] Compiling remove_dir_all v0.5.3 [INFO] [stderr] Compiling fastrand v1.8.0 [INFO] [stderr] Compiling mini-lsm-xtask v0.2.0 (/opt/rustwide/workdir/xtask) [INFO] [stderr] Compiling tempfile v3.3.0 [INFO] [stderr] Compiling mini-lsm-starter v0.2.0 (/opt/rustwide/workdir/mini-lsm-starter) [INFO] [stderr] Compiling mini-lsm-mvcc v0.2.0 (/opt/rustwide/workdir/mini-lsm-mvcc) [INFO] [stderr] Compiling mini-lsm v0.2.0 (/opt/rustwide/workdir/mini-lsm) [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 12.05s [INFO] running `Command { std: "docker" "inspect" "e2fcbce90fc5061b4f177334f8d1a4379b357e812bf2041544e3c137efae22d8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e2fcbce90fc5061b4f177334f8d1a4379b357e812bf2041544e3c137efae22d8", kill_on_drop: false }` [INFO] [stdout] e2fcbce90fc5061b4f177334f8d1a4379b357e812bf2041544e3c137efae22d8 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.77.0" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 443ec1952cb5b564dd006bdc47e67d19b9d0404dfaff0072850d1e7152d3f47f [INFO] running `Command { std: "docker" "start" "-a" "443ec1952cb5b564dd006bdc47e67d19b9d0404dfaff0072850d1e7152d3f47f", kill_on_drop: false }` [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.15s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/mini_lsm-fb196f78e73f12d3) [INFO] [stdout] [INFO] [stdout] running 56 tests [INFO] [stdout] test tests::week1_day1::test_task1_memtable_overwrite ... ok [INFO] [stdout] test tests::week1_day1::test_task1_memtable_get ... ok [INFO] [stdout] test tests::week1_day2::test_task1_empty_memtable_iter ... ok [INFO] [stdout] test tests::week1_day2::test_task1_memtable_iter ... ok [INFO] [stdout] test tests::week1_day2::test_task2_merge_2 ... ok [INFO] [stdout] test tests::week1_day2::test_task2_merge_empty ... ok [INFO] [stdout] test tests::week1_day2::test_task2_merge_1 ... ok [INFO] [stdout] test tests::week1_day2::test_task2_merge_error ... ok [INFO] [stdout] test tests::week1_day3::test_block_build_all ... ok [INFO] [stdout] test tests::week1_day1::test_task2_storage_integration ... ok [INFO] [stdout] test tests::week1_day2::test_task3_fused_iterator ... ok [INFO] [stdout] test tests::week1_day3::test_block_build_full ... ok [INFO] [stdout] test tests::week1_day3::test_block_build_large_1 ... ok [INFO] [stdout] test tests::week1_day3::test_block_build_large_2 ... ok [INFO] [stdout] test tests::week1_day3::test_block_build_single_key ... ok [INFO] [stdout] test tests::week1_day3::test_block_decode ... ok [INFO] [stdout] test tests::week1_day3::test_block_encode ... ok [INFO] [stdout] test tests::week1_day1::test_task4_storage_integration ... ok [INFO] [stdout] test tests::week1_day3::test_block_seek_key ... ok [INFO] [stdout] test tests::week1_day3::test_block_iterator ... ok [INFO] [stdout] test tests::week1_day2::test_task4_integration ... ok [INFO] [stdout] test tests::week1_day4::test_sst_build_single_key ... ok [INFO] [stdout] test tests::week1_day4::test_sst_build_all ... ok [INFO] [stdout] test tests::week1_day4::test_sst_build_two_blocks ... ok [INFO] [stdout] test tests::week1_day4::test_sst_decode ... ok [INFO] [stdout] test tests::week1_day5::test_task1_merge_2 ... ok [INFO] [stdout] test tests::week1_day5::test_task1_merge_5 ... ok [INFO] [stdout] test tests::week1_day5::test_task1_merge_4 ... ok [INFO] [stdout] test tests::week1_day5::test_task1_merge_3 ... ok [INFO] [stdout] test tests::week1_day5::test_task1_merge_1 ... ok [INFO] [stdout] test tests::week1_day4::test_sst_iterator ... ok [INFO] [stdout] test tests::week1_day1::test_task3_storage_integration ... ok [INFO] [stdout] test tests::week1_day4::test_sst_seek_key ... ok [INFO] [stdout] test tests::week1_day7::test_task1_bloom_filter ... ok [INFO] [stdout] test tests::week1_day1::test_task3_freeze_on_capacity ... ok [INFO] [stdout] test tests::week1_day7::test_task3_block_key_compression ... ok [INFO] [stdout] test tests::week1_day5::test_task2_storage_scan ... ok [INFO] [stdout] test tests::week1_day7::test_task2_sst_decode ... ok [INFO] [stdout] test tests::week1_day5::test_task3_storage_get ... ok [INFO] [stdout] test tests::week1_day6::test_task1_storage_get ... ok [INFO] [stdout] test tests::week1_day6::test_task1_storage_scan ... ok [INFO] [stdout] test tests::week2_day1::test_task2_concat_iterator ... ok [INFO] [stdout] test tests::week2_day1::test_task3_integration ... ok [INFO] [stdout] test tests::week2_day1::test_task1_full_compaction ... ok [INFO] [stdout] test tests::week1_day6::test_task3_sst_filter ... ok [INFO] [stdout] test tests::week1_day6::test_task2_auto_flush ... ok [INFO] [stdout] test tests::week2_day5::test_integration_simple ... ok [INFO] [stdout] test tests::week2_day5::test_integration_leveled ... ok [INFO] [stdout] test tests::week2_day5::test_integration_tiered ... ok [INFO] [stdout] test tests::week2_day6::test_integration_leveled ... ok [INFO] [stdout] test tests::week2_day6::test_integration_simple ... ok [INFO] [stdout] test tests::week2_day6::test_integration_tiered ... ok [INFO] [stdout] test tests::week2_day5::test_multiple_compacted_ssts_leveled ... ok [INFO] [stdout] test tests::week2_day3::test_integration ... ok [INFO] [stdout] test tests::week2_day2::test_integration ... ok [INFO] [stdout] test tests::week2_day4::test_integration ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 56 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 13.96s [INFO] [stdout] [INFO] [stderr] Running unittests src/bin/compaction-simulator.rs (/opt/rustwide/target/debug/deps/compaction_simulator_ref-6ecfaaf8939ebf2b) [INFO] [stderr] Running unittests src/bin/mini-lsm-cli.rs (/opt/rustwide/target/debug/deps/mini_lsm_cli_ref-79425bc38ae5a490) [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] [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] [stderr] Running unittests src/bin/wrapper.rs (/opt/rustwide/target/debug/deps/mini_lsm_wrapper_ref-a830eeecd70ded9b) [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] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/mini_lsm_mvcc-e73c6c2f5fbb5876) [INFO] [stdout] [INFO] [stdout] running 72 tests [INFO] [stdout] test tests::week1_day1::test_task1_memtable_get ... ok [INFO] [stdout] test tests::week1_day2::test_task1_memtable_iter ... ok [INFO] [stdout] test tests::week1_day2::test_task1_empty_memtable_iter ... ok [INFO] [stdout] test tests::week1_day2::test_task2_merge_1 ... ok [INFO] [stdout] test tests::week1_day2::test_task2_merge_2 ... ok [INFO] [stdout] test tests::week1_day1::test_task1_memtable_overwrite ... ok [INFO] [stdout] test tests::week1_day2::test_task2_merge_error ... ok [INFO] [stdout] test tests::week1_day2::test_task2_merge_empty ... ok [INFO] [stdout] test tests::week1_day2::test_task3_fused_iterator ... ok [INFO] [stdout] test tests::week1_day3::test_block_build_full ... ok [INFO] [stdout] test tests::week1_day3::test_block_build_large_1 ... ok [INFO] [stdout] test tests::week1_day3::test_block_build_single_key ... ok [INFO] [stdout] test tests::week1_day3::test_block_build_all ... ok [INFO] [stdout] test tests::week1_day3::test_block_build_large_2 ... ok [INFO] [stdout] test tests::week1_day3::test_block_decode ... ok [INFO] [stdout] test tests::week1_day3::test_block_iterator ... ok [INFO] [stdout] test tests::week1_day3::test_block_encode ... ok [INFO] [stdout] test tests::week1_day1::test_task2_storage_integration ... ok [INFO] [stdout] test tests::week1_day3::test_block_seek_key ... ok [INFO] [stdout] test tests::week1_day1::test_task4_storage_integration ... ok [INFO] [stdout] test tests::week1_day4::test_sst_build_single_key ... ok [INFO] [stdout] test tests::week1_day4::test_sst_build_two_blocks ... ok [INFO] [stdout] test tests::week1_day1::test_task3_storage_integration ... ok [INFO] [stdout] test tests::week1_day4::test_sst_build_all ... ok [INFO] [stdout] test tests::week1_day4::test_sst_decode ... ok [INFO] [stdout] test tests::week1_day5::test_task1_merge_1 ... ok [INFO] [stdout] test tests::week1_day5::test_task1_merge_2 ... ok [INFO] [stdout] test tests::week1_day2::test_task4_integration ... ok [INFO] [stdout] test tests::week1_day5::test_task1_merge_3 ... ok [INFO] [stdout] test tests::week1_day5::test_task1_merge_4 ... ok [INFO] [stdout] test tests::week1_day4::test_sst_seek_key ... ok [INFO] [stdout] test tests::week1_day5::test_task1_merge_5 ... ok [INFO] [stdout] test tests::week1_day4::test_sst_iterator ... ok [INFO] [stdout] test tests::week1_day7::test_task1_bloom_filter ... ok [INFO] [stdout] test tests::week1_day7::test_task2_sst_decode ... ok [INFO] [stdout] test tests::week1_day5::test_task2_storage_scan ... ok [INFO] [stdout] test tests::week1_day5::test_task3_storage_get ... ok [INFO] [stdout] test tests::week1_day7::test_task3_block_key_compression ... ok [INFO] [stdout] test tests::week1_day6::test_task1_storage_get ... ok [INFO] [stdout] test tests::week1_day6::test_task1_storage_scan ... ok [INFO] [stdout] test tests::week2_day1::test_task2_concat_iterator ... ok [INFO] [stdout] test tests::week1_day1::test_task3_freeze_on_capacity ... ok [INFO] [stdout] test tests::week2_day1::test_task1_full_compaction ... ok [INFO] [stdout] test tests::week2_day1::test_task3_integration ... ok [INFO] [stdout] test tests::week1_day6::test_task3_sst_filter ... ok [INFO] [stdout] test tests::week2_day5::test_integration_leveled ... ok [INFO] [stdout] test tests::week2_day5::test_integration_simple ... ok [INFO] [stdout] test tests::week2_day5::test_integration_tiered ... ok [INFO] [stdout] test tests::week1_day6::test_task2_auto_flush ... ok [INFO] [stdout] test tests::week2_day6::test_integration_leveled ... ok [INFO] [stdout] test tests::week3_day1::test_sst_build_multi_version_simple ... ok [INFO] [stdout] test tests::week3_day1::test_sst_build_multi_version_hard ... ok [INFO] [stdout] test tests::week3_day3::test_task2_lsm_iterator_mvcc ... ok [INFO] [stdout] test tests::week3_day3::test_task2_memtable_mvcc ... ok [INFO] [stdout] test tests::week2_day6::test_integration_tiered ... ok [INFO] [stdout] test tests::week3_day3::test_task3_sst_ts ... ok [INFO] [stdout] test tests::week3_day4::test_task1_watermark ... ok [INFO] [stdout] test tests::week3_day4::test_task2_snapshot_watermark ... ok [INFO] [stdout] test tests::week3_day5::test_txn_integration ... ok [INFO] [stdout] test tests::week3_day6::test_serializable_1 ... ok [INFO] [stdout] test tests::week2_day6::test_integration_simple ... ok [INFO] [stdout] test tests::week3_day6::test_serializable_2 ... ok [INFO] [stdout] test tests::week3_day6::test_serializable_4_scan ... ok [INFO] [stdout] test tests::week3_day4::test_task3_mvcc_compaction ... ok [INFO] [stdout] test tests::week3_day6::test_serializable_5_read_only ... ok [INFO] [stdout] test tests::week3_day6::test_serializable_3_ts_range ... ok [INFO] [stdout] test tests::week3_day7::test_task3_mvcc_compaction ... ok [INFO] [stdout] test tests::week2_day5::test_multiple_compacted_ssts_leveled ... ok [INFO] [stdout] test tests::week2_day3::test_integration ... ok [INFO] [stdout] test tests::week2_day2::test_integration ... ok [INFO] [stdout] test tests::week2_day4::test_integration ... ok [INFO] [stdout] test tests::week3_day2::test_task3_compaction_integration ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 72 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 14.40s [INFO] [stdout] [INFO] [stderr] Running unittests src/bin/compaction-simulator.rs (/opt/rustwide/target/debug/deps/compaction_simulator_mvcc_ref-46b5454ce2b82cab) [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stderr] Running unittests src/bin/mini-lsm-cli.rs (/opt/rustwide/target/debug/deps/mini_lsm_cli_mvcc_ref-8310278ff65eac52) [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] [stderr] Running unittests src/bin/wrapper.rs (/opt/rustwide/target/debug/deps/mini_lsm_wrapper_mvcc_ref-67cb365de6e65200) [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] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/mini_lsm_starter-a2d502bcb1891b63) [INFO] [stdout] [INFO] [stdout] running 56 tests [INFO] [stdout] test tests::week1_day1::test_task1_memtable_overwrite ... ok [INFO] [stdout] test tests::week1_day1::test_task1_memtable_get ... ok [INFO] [stdout] test tests::week1_day2::test_task2_merge_2 ... ok [INFO] [stdout] test tests::week1_day2::test_task2_merge_empty ... ok [INFO] [stdout] test tests::week1_day2::test_task2_merge_error ... ok [INFO] [stdout] test tests::week1_day2::test_task3_fused_iterator ... ok [INFO] [stdout] test tests::week1_day2::test_task2_merge_1 ... ok [INFO] [stdout] test tests::week1_day2::test_task1_memtable_iter ... ok [INFO] [stdout] test tests::week1_day2::test_task1_empty_memtable_iter ... ok [INFO] [stdout] test tests::week1_day3::test_block_build_all ... ok [INFO] [stdout] test tests::week1_day3::test_block_build_full ... ok [INFO] [stdout] test tests::week1_day3::test_block_build_single_key ... ok [INFO] [stdout] test tests::week1_day3::test_block_decode ... ok [INFO] [stdout] test tests::week1_day3::test_block_build_large_1 ... ok [INFO] [stdout] test tests::week1_day3::test_block_build_large_2 ... ok [INFO] [stdout] test tests::week1_day3::test_block_encode ... ok [INFO] [stdout] test tests::week1_day3::test_block_iterator ... ok [INFO] [stdout] test tests::week1_day3::test_block_seek_key ... ok [INFO] [stdout] test tests::week1_day1::test_task2_storage_integration ... ok [INFO] [stdout] test tests::week1_day1::test_task3_storage_integration ... ok [INFO] [stdout] test tests::week1_day1::test_task4_storage_integration ... ok [INFO] [stdout] test tests::week1_day4::test_sst_decode ... ok [INFO] [stdout] test tests::week1_day2::test_task4_integration ... ok [INFO] [stdout] test tests::week1_day5::test_task1_merge_2 ... ok [INFO] [stdout] test tests::week1_day5::test_task1_merge_1 ... ok [INFO] [stdout] test tests::week1_day5::test_task1_merge_3 ... ok [INFO] [stdout] test tests::week1_day5::test_task1_merge_4 ... ok [INFO] [stdout] test tests::week1_day5::test_task1_merge_5 ... ok [INFO] [stdout] test tests::week1_day4::test_sst_build_two_blocks ... ok [INFO] [stdout] test tests::week1_day4::test_sst_build_all ... ok [INFO] [stdout] test tests::week1_day4::test_sst_iterator ... ok [INFO] [stdout] test tests::week1_day4::test_sst_build_single_key ... ok [INFO] [stdout] test tests::week1_day1::test_task3_freeze_on_capacity ... ok [INFO] [stdout] test tests::week1_day7::test_task1_bloom_filter ... ok [INFO] [stdout] test tests::week1_day4::test_sst_seek_key ... ok [INFO] [stdout] test tests::week1_day5::test_task3_storage_get ... ok [INFO] [stdout] test tests::week1_day5::test_task2_storage_scan ... ok [INFO] [stdout] test tests::week1_day7::test_task3_block_key_compression ... ok [INFO] [stdout] test tests::week1_day7::test_task2_sst_decode ... ok [INFO] [stdout] test tests::week1_day6::test_task1_storage_get ... ok [INFO] [stdout] test tests::week1_day6::test_task1_storage_scan ... ok [INFO] [stdout] test tests::week2_day1::test_task2_concat_iterator ... ok [INFO] [stdout] test tests::week2_day1::test_task1_full_compaction ... ok [INFO] [stdout] test tests::week2_day1::test_task3_integration ... ok [INFO] [stdout] test tests::week1_day6::test_task3_sst_filter ... ok [INFO] [stdout] test tests::week2_day5::test_integration_simple ... ok [INFO] [stdout] test tests::week2_day5::test_integration_tiered ... ok [INFO] [stdout] test tests::week2_day5::test_integration_leveled ... ok [INFO] [stdout] test tests::week2_day6::test_integration_leveled ... ok [INFO] [stdout] test tests::week2_day6::test_integration_simple ... ok [INFO] [stdout] test tests::week1_day6::test_task2_auto_flush ... ok [INFO] [stdout] test tests::week2_day6::test_integration_tiered ... ok [INFO] [stdout] test tests::week2_day5::test_multiple_compacted_ssts_leveled ... ok [INFO] [stdout] test tests::week2_day3::test_integration ... ok [INFO] [stdout] test tests::week2_day4::test_integration ... ok [INFO] [stdout] test tests::week2_day2::test_integration ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 56 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 10.83s [INFO] [stdout] [INFO] [stderr] Running unittests src/bin/compaction-simulator.rs (/opt/rustwide/target/debug/deps/compaction_simulator-9c54e50ee1d6ef64) [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] [stderr] Running unittests src/bin/mini-lsm-cli.rs (/opt/rustwide/target/debug/deps/mini_lsm_cli-88aecee25849ab1f) [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] [stderr] Running unittests src/bin/wrapper.rs (/opt/rustwide/target/debug/deps/wrapper-59f3757450582308) [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] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/mini_lsm_xtask-39d963b91af4f488) [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] [stderr] Doc-tests mini-lsm [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] [stderr] Doc-tests mini-lsm-mvcc [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] [stderr] Doc-tests mini-lsm-starter [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" "443ec1952cb5b564dd006bdc47e67d19b9d0404dfaff0072850d1e7152d3f47f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "443ec1952cb5b564dd006bdc47e67d19b9d0404dfaff0072850d1e7152d3f47f", kill_on_drop: false }` [INFO] [stdout] 443ec1952cb5b564dd006bdc47e67d19b9d0404dfaff0072850d1e7152d3f47f [INFO] testing YangchenYe323/mini-lsm-private against beta-2024-03-24 for beta-1.78-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYangchenYe323%2Fmini-lsm-private" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/YangchenYe323/mini-lsm-private on toolchain beta-2024-03-24 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-03-24" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] removed /workspace/builds/worker-6-tc2/source/.cargo/config.toml [INFO] removed /workspace/builds/worker-6-tc2/source/rust-toolchain.toml [INFO] started tweaking git repo https://github.com/YangchenYe323/mini-lsm-private [INFO] finished tweaking git repo https://github.com/YangchenYe323/mini-lsm-private [INFO] tweaked toml for git repo https://github.com/YangchenYe323/mini-lsm-private written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/YangchenYe323/mini-lsm-private already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-03-24" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-03-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 95dd29fa010d3104c859f4c0e29e9f251a737cb0d13697157c4471cb7c62a30c [INFO] running `Command { std: "docker" "start" "-a" "95dd29fa010d3104c859f4c0e29e9f251a737cb0d13697157c4471cb7c62a30c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "95dd29fa010d3104c859f4c0e29e9f251a737cb0d13697157c4471cb7c62a30c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "95dd29fa010d3104c859f4c0e29e9f251a737cb0d13697157c4471cb7c62a30c", kill_on_drop: false }` [INFO] [stdout] 95dd29fa010d3104c859f4c0e29e9f251a737cb0d13697157c4471cb7c62a30c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-03-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] eb9205525e4c99a761114dcf1e5d01ef996f280995f0ed4769db6e38e023cc31 [INFO] running `Command { std: "docker" "start" "-a" "eb9205525e4c99a761114dcf1e5d01ef996f280995f0ed4769db6e38e023cc31", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.152 [INFO] [stderr] Compiling proc-macro2 v1.0.76 [INFO] [stderr] Compiling unicode-ident v1.0.6 [INFO] [stderr] Compiling syn v1.0.107 [INFO] [stderr] Compiling crossbeam-utils v0.8.19 [INFO] [stderr] Compiling utf8parse v0.2.1 [INFO] [stderr] Compiling memoffset v0.7.1 [INFO] [stderr] Compiling heck v0.4.1 [INFO] [stderr] Compiling parking_lot_core v0.9.5 [INFO] [stderr] Compiling anstyle-parse v0.2.3 [INFO] [stderr] Compiling proc-macro2-diagnostics v0.10.1 [INFO] [stderr] Compiling crossbeam-epoch v0.9.13 [INFO] [stderr] Compiling anstyle v1.0.4 [INFO] [stderr] Compiling bitflags v2.4.2 [INFO] [stderr] Compiling anstyle-query v1.0.2 [INFO] [stderr] Compiling colorchoice v1.0.0 [INFO] [stderr] Compiling rustix v0.38.30 [INFO] [stderr] Compiling serde_derive v1.0.151 [INFO] [stderr] Compiling anstream v0.6.7 [INFO] [stderr] Compiling yansi v1.0.0-rc.1 [INFO] [stderr] Compiling unicode-width v0.1.10 [INFO] [stderr] Compiling quote v1.0.35 [INFO] [stderr] Compiling anyhow v1.0.68 [INFO] [stderr] Compiling thiserror v1.0.38 [INFO] [stderr] Compiling syn v2.0.48 [INFO] [stderr] Compiling clap_lex v0.6.0 [INFO] [stderr] Compiling linux-raw-sys v0.4.13 [INFO] [stderr] Compiling serde v1.0.151 [INFO] [stderr] Compiling either v1.9.0 [INFO] [stderr] Compiling clap_builder v4.4.17 [INFO] [stderr] Compiling itertools v0.12.0 [INFO] [stderr] Compiling raw-cpuid v10.6.0 [INFO] [stderr] Compiling getrandom v0.2.8 [INFO] [stderr] Compiling rand_core v0.6.4 [INFO] [stderr] Compiling parking_lot v0.12.1 [INFO] [stderr] Compiling nibble_vec v0.1.0 [INFO] [stderr] Compiling serde_json v1.0.91 [INFO] [stderr] Compiling crossbeam-skiplist v0.1.0 [INFO] [stderr] Compiling moka v0.9.6 [INFO] [stderr] Compiling endian-type v0.1.2 [INFO] [stderr] Compiling rand_chacha v0.3.1 [INFO] [stderr] Compiling radix_trie v0.2.1 [INFO] [stderr] Compiling fd-lock v4.0.2 [INFO] [stderr] Compiling scheduled-thread-pool v0.2.6 [INFO] [stderr] Compiling quanta v0.10.1 [INFO] [stderr] Compiling uuid v1.2.2 [INFO] [stderr] Compiling nix v0.27.1 [INFO] [stderr] Compiling num_cpus v1.15.0 [INFO] [stderr] Compiling crossbeam-channel v0.5.11 [INFO] [stderr] Compiling triomphe v0.1.8 [INFO] [stderr] Compiling thiserror-impl v1.0.38 [INFO] [stderr] Compiling unicode-segmentation v1.10.1 [INFO] [stderr] Compiling aliasable v0.1.3 [INFO] [stderr] Compiling ryu v1.0.12 [INFO] [stderr] Compiling home v0.5.9 [INFO] [stderr] Compiling tagptr v0.2.0 [INFO] [stderr] Compiling itoa v1.0.5 [INFO] [stderr] Compiling static_assertions v1.1.0 [INFO] [stderr] Compiling minimal-lexical v0.2.1 [INFO] [stderr] Compiling rand v0.8.5 [INFO] [stderr] Compiling nom v7.1.3 [INFO] [stderr] Compiling bytes v1.3.0 [INFO] [stderr] Compiling clap_derive v4.4.7 [INFO] [stderr] Compiling ouroboros_macro v0.18.2 [INFO] [stderr] Compiling rustyline v13.0.0 [INFO] [stderr] Compiling arc-swap v1.5.1 [INFO] [stderr] Compiling farmhash v1.1.5 [INFO] [stderr] Compiling crc32fast v1.3.2 [INFO] [stderr] Compiling shared_child v1.0.0 [INFO] [stderr] Compiling terminal_size v0.1.17 [INFO] [stderr] Compiling os_pipe v1.1.2 [INFO] [stderr] Compiling console v0.15.2 [INFO] [stderr] Compiling duct v0.13.6 [INFO] [stderr] Compiling ouroboros v0.18.2 [INFO] [stderr] Compiling clap v4.4.17 [INFO] [stderr] Compiling mini-lsm-xtask v0.2.0 (/opt/rustwide/workdir/xtask) [INFO] [stderr] Compiling mini-lsm-mvcc v0.2.0 (/opt/rustwide/workdir/mini-lsm-mvcc) [INFO] [stderr] Compiling mini-lsm-starter v0.2.0 (/opt/rustwide/workdir/mini-lsm-starter) [INFO] [stderr] Compiling mini-lsm v0.2.0 (/opt/rustwide/workdir/mini-lsm) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 30.49s [INFO] running `Command { std: "docker" "inspect" "eb9205525e4c99a761114dcf1e5d01ef996f280995f0ed4769db6e38e023cc31", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "eb9205525e4c99a761114dcf1e5d01ef996f280995f0ed4769db6e38e023cc31", kill_on_drop: false }` [INFO] [stdout] eb9205525e4c99a761114dcf1e5d01ef996f280995f0ed4769db6e38e023cc31 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-03-24" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] fed64f6a54de7efea959ce65e4976b1246224c30a7e48049cd55c2a9d6728aec [INFO] running `Command { std: "docker" "start" "-a" "fed64f6a54de7efea959ce65e4976b1246224c30a7e48049cd55c2a9d6728aec", kill_on_drop: false }` [INFO] [stderr] Compiling fastrand v1.8.0 [INFO] [stderr] Compiling remove_dir_all v0.5.3 [INFO] [stderr] Compiling mini-lsm-xtask v0.2.0 (/opt/rustwide/workdir/xtask) [INFO] [stderr] Compiling tempfile v3.3.0 [INFO] [stderr] Compiling mini-lsm-starter v0.2.0 (/opt/rustwide/workdir/mini-lsm-starter) [INFO] [stderr] Compiling mini-lsm-mvcc v0.2.0 (/opt/rustwide/workdir/mini-lsm-mvcc) [INFO] [stderr] Compiling mini-lsm v0.2.0 (/opt/rustwide/workdir/mini-lsm) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 10.63s [INFO] running `Command { std: "docker" "inspect" "fed64f6a54de7efea959ce65e4976b1246224c30a7e48049cd55c2a9d6728aec", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "fed64f6a54de7efea959ce65e4976b1246224c30a7e48049cd55c2a9d6728aec", kill_on_drop: false }` [INFO] [stdout] fed64f6a54de7efea959ce65e4976b1246224c30a7e48049cd55c2a9d6728aec [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-03-24" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] c9091d9e6e6164259fe223c676bf8241354e886731c889d81a6768e2a4eb61a2 [INFO] running `Command { std: "docker" "start" "-a" "c9091d9e6e6164259fe223c676bf8241354e886731c889d81a6768e2a4eb61a2", kill_on_drop: false }` [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.12s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/mini_lsm-2231aa89ad76cb33) [INFO] [stdout] [INFO] [stdout] running 56 tests [INFO] [stderr] thread 'tests::week1_day1::test_task1_memtable_get' panicked at library/core/src/panicking.rs:156:5: [INFO] [stderr] unsafe precondition(s) violated: slice::get_unchecked requires that the index is within the slice [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x5563d56bff32 - std::backtrace_rs::backtrace::libunwind::trace::hf591c4fa475b521b [INFO] [stderr] at /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/std/src/../../backtrace/src/backtrace/libunwind.rs:105:5 [INFO] [stderr] 1: 0x5563d56bff32 - std::backtrace_rs::backtrace::trace_unsynchronized::hce0fc3788d7159a9 [INFO] [stderr] at /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stderr] 2: 0x5563d56bff32 - std::sys_common::backtrace::_print_fmt::he2d1cbe468040257 [INFO] [stderr] at /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/std/src/sys_common/backtrace.rs:68:5 [INFO] [stderr] 3: 0x5563d56bff32 - ::fmt::h2c24b8bf09043006 [INFO] [stderr] at /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/std/src/sys_common/backtrace.rs:44:22 [INFO] [stderr] 4: 0x5563d56e8f0c - core::fmt::rt::Argument::fmt::h982f45771e9ecd8b [INFO] [stderr] at /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/core/src/fmt/rt.rs:142:9 [INFO] [stderr] 5: 0x5563d56e8f0c - core::fmt::write::h08d521d188b46bd0 [INFO] [stderr] at /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/core/src/fmt/mod.rs:1153:17 [INFO] [stderr] 6: 0x5563d56bd5cf - std::io::Write::write_fmt::h30d389991f37d75e [INFO] [stderr] at /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/std/src/io/mod.rs:1843:15 [INFO] [stderr] 7: 0x5563d56bfd04 - std::sys_common::backtrace::_print::h3e781da3859a0efa [INFO] [stderr] at /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/std/src/sys_common/backtrace.rs:47:5 [INFO] [stderr] 8: 0x5563d56bfd04 - std::sys_common::backtrace::print::he5e9ec6ac18663c5 [INFO] [stderr] at /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/std/src/sys_common/backtrace.rs:34:9 [INFO] [stderr] 9: 0x5563d56c19cb - std::panicking::default_hook::{{closure}}::hb05b3618b96e9a16 [INFO] [stderr] 10: 0x5563d56c1723 - std::panicking::default_hook::ha92ce0e319b86adc [INFO] [stderr] at /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/std/src/panicking.rs:292:9 [INFO] [stderr] 11: 0x5563d5645957 - as core::ops::function::Fn>::call::hfad4e8cd66d28d6f [INFO] [stderr] at /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/alloc/src/boxed.rs:2034:9 [INFO] [stderr] 12: 0x5563d5645957 - test::test_main::{{closure}}::hb316c81ad0052246 [INFO] [stderr] at /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/test/src/lib.rs:138:21 [INFO] [stderr] 13: 0x5563d56c2000 - as core::ops::function::Fn>::call::h48f57e8ba0ebe10d [INFO] [stderr] at /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/alloc/src/boxed.rs:2034:9 [INFO] [stderr] 14: 0x5563d56c2000 - std::panicking::rust_panic_with_hook::h0843a0c6d846e961 [INFO] [stderr] at /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/std/src/panicking.rs:783:13 [INFO] [stderr] 15: 0x5563d56c1d09 - std::panicking::begin_panic_handler::{{closure}}::h089f044d920e4ed4 [INFO] [stderr] at /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/std/src/panicking.rs:649:13 [INFO] [stderr] 16: 0x5563d56c0406 - std::sys_common::backtrace::__rust_end_short_backtrace::h17a752ec00eb4307 [INFO] [stderr] at /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/std/src/sys_common/backtrace.rs:171:18 [INFO] [stderr] 17: 0x5563d56c1a74 - rust_begin_unwind [INFO] [stderr] at /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/std/src/panicking.rs:645:5 [INFO] [stderr] 18: 0x5563d5435efa - core::panicking::panic_nounwind_fmt::runtime::h762a01e9781b3200 [INFO] [stderr] at /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/core/src/panicking.rs:110:18 [INFO] [stderr] 19: 0x5563d5435efa - core::panicking::panic_nounwind_fmt::hc6c08c4591994c18 [INFO] [stderr] at /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/core/src/panicking.rs:123:9 [INFO] [stderr] 20: 0x5563d5435fa9 - core::panicking::panic_nounwind::h375e432f93a2f928 [INFO] [stderr] at /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/core/src/panicking.rs:156:5 [INFO] [stderr] 21: 0x5563d557c5f8 - >::get_unchecked::precondition_check::h6cd2b61073897533 [INFO] [stderr] at /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/core/src/intrinsics.rs:2799:21 [INFO] [stderr] 22: 0x5563d557c4c3 - >::get_unchecked::haa2962677bba7bd0 [INFO] [stderr] at /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/core/src/slice/index.rs:233:9 [INFO] [stderr] 23: 0x5563d55342a8 - core::slice::::get_unchecked::hdc0fe333199d115d [INFO] [stderr] at /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/core/src/slice/mod.rs:686:20 [INFO] [stderr] 24: 0x5563d550d86d - as core::ops::index::Index>::index::h7e696ce0f105d18f [INFO] [stderr] at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/crossbeam-skiplist-0.1.0/src/base.rs:39:18 [INFO] [stderr] 25: 0x5563d5511def - crossbeam_skiplist::base::SkipList::search_position::hfb7cdb77468c2f36 [INFO] [stderr] at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/crossbeam-skiplist-0.1.0/src/base.rs:781:33 [INFO] [stderr] 26: 0x5563d5510e29 - crossbeam_skiplist::base::SkipList::insert_internal::h408aae7e5055f7c9 [INFO] [stderr] at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/crossbeam-skiplist-0.1.0/src/base.rs:871:26 [INFO] [stderr] 27: 0x5563d551268e - crossbeam_skiplist::base::SkipList::insert::hd72a7906765e3a16 [INFO] [stderr] at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/crossbeam-skiplist-0.1.0/src/base.rs:1085:9 [INFO] [stderr] 28: 0x5563d54af003 - crossbeam_skiplist::map::SkipMap::insert::ha3e9c6fab14d9307 [INFO] [stderr] at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/crossbeam-skiplist-0.1.0/src/map.rs:375:20 [INFO] [stderr] 29: 0x5563d5552acf - mini_lsm::mem_table::MemTable::put::h040369b5e51abc26 [INFO] [stderr] at /opt/rustwide/workdir/mini-lsm/src/mem_table.rs:96:9 [INFO] [stderr] 30: 0x5563d5552821 - mini_lsm::mem_table::MemTable::for_testing_put_slice::h8dd8889110bac0ce [INFO] [stderr] at /opt/rustwide/workdir/mini-lsm/src/mem_table.rs:70:9 [INFO] [stderr] 31: 0x5563d55b91e6 - mini_lsm::tests::week1_day1::test_task1_memtable_get::hd04ea721ea2495d7 [INFO] [stderr] at /opt/rustwide/workdir/mini-lsm/src/tests/week1_day1.rs:13:5 [INFO] [stderr] 32: 0x5563d55b9187 - mini_lsm::tests::week1_day1::test_task1_memtable_get::{{closure}}::hd9294ae345d000f8 [INFO] [stderr] at /opt/rustwide/workdir/mini-lsm/src/tests/week1_day1.rs:11:29 [INFO] [stderr] 33: 0x5563d549b516 - core::ops::function::FnOnce::call_once::h4debd5962a91e47e [INFO] [stderr] at /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/core/src/ops/function.rs:250:5 [INFO] [stderr] 34: 0x5563d564a51f - core::ops::function::FnOnce::call_once::h0e9f6b735acda624 [INFO] [stderr] at /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/core/src/ops/function.rs:250:5 [INFO] [stderr] 35: 0x5563d564a51f - test::__rust_begin_short_backtrace::h65f11a900e8cf65e [INFO] [stderr] at /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/test/src/lib.rs:621:18 [INFO] [stderr] 36: 0x5563d5649c13 - test::run_test_in_process::{{closure}}::h5e2816892ad7ac9a [INFO] [stderr] at /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/test/src/lib.rs:644:60 [INFO] [stderr] 37: 0x5563d5649c13 - as core::ops::function::FnOnce<()>>::call_once::h1b9c320c72d4c6ce [INFO] [stderr] at /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stderr] 38: 0x5563d5649c13 - std::panicking::try::do_call::hd0b24b52271709c2 [INFO] [stderr] at /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/std/src/panicking.rs:552:40 [INFO] [stderr] 39: 0x5563d5649c13 - std::panicking::try::h56d1181c9703484e [INFO] [stderr] at /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/std/src/panicking.rs:516:19 [INFO] [stderr] 40: 0x5563d5649c13 - std::panic::catch_unwind::h8bd23f3ab29003f2 [INFO] [stderr] at /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/std/src/panic.rs:146:14 [INFO] [stderr] 41: 0x5563d5649c13 - test::run_test_in_process::h506184887cedf4a3 [INFO] [stderr] at /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/test/src/lib.rs:644:27 [INFO] [stderr] 42: 0x5563d5649c13 - test::run_test::{{closure}}::h1877fa24be24f03e [INFO] [stderr] at /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/test/src/lib.rs:567:43 [INFO] [stderr] 43: 0x5563d5612813 - test::run_test::{{closure}}::hd863e669253739ef [INFO] [stderr] at /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/test/src/lib.rs:595:41 [INFO] [stderr] 44: 0x5563d5612813 - std::sys_common::backtrace::__rust_begin_short_backtrace::h7f4ddddf8d11340f [INFO] [stderr] at /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/std/src/sys_common/backtrace.rs:155:18 [INFO] [stderr] 45: 0x5563d561737f - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h4a8b28c9e99c5cc2 [INFO] [stderr] at /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/std/src/thread/mod.rs:528:17 [INFO] [stderr] 46: 0x5563d561737f - as core::ops::function::FnOnce<()>>::call_once::h82f1b5c530f72a07 [INFO] [stderr] at /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stderr] 47: 0x5563d561737f - std::panicking::try::do_call::h0064fe0f14317599 [INFO] [stderr] at /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/std/src/panicking.rs:552:40 [INFO] [stderr] 48: 0x5563d561737f - std::panicking::try::h1cc6a2a343001459 [INFO] [stderr] at /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/std/src/panicking.rs:516:19 [INFO] [stderr] 49: 0x5563d561737f - std::panic::catch_unwind::h90be06afab17593a [INFO] [stderr] at /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/std/src/panic.rs:146:14 [INFO] [stderr] 50: 0x5563d561737f - std::thread::Builder::spawn_unchecked_::{{closure}}::h80bc2ad0bec94635 [INFO] [stderr] at /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/std/src/thread/mod.rs:527:30 [INFO] [stderr] 51: 0x5563d561737f - core::ops::function::FnOnce::call_once{{vtable.shim}}::h27e1017014ef0506 [INFO] [stderr] at /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/core/src/ops/function.rs:250:5 [INFO] [stderr] 52: 0x5563d56c6fb5 - as core::ops::function::FnOnce>::call_once::hdbdd1f187b9b9080 [INFO] [stderr] at /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/alloc/src/boxed.rs:2020:9 [INFO] [stderr] 53: 0x5563d56c6fb5 - as core::ops::function::FnOnce>::call_once::hc7ee8cb78037b4ec [INFO] [stderr] at /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/alloc/src/boxed.rs:2020:9 [INFO] [stderr] 54: 0x5563d56c6fb5 - std::sys::pal::unix::thread::Thread::new::thread_start::haedac03260309a72 [INFO] [stderr] at /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/std/src/sys/pal/unix/thread.rs:108:17 [INFO] [stderr] 55: 0x7f03b1e18ac3 - [INFO] [stderr] 56: 0x7f03b1ea9bf4 - __clone [INFO] [stderr] 57: 0x0 - [INFO] [stderr] thread caused non-unwinding panic. aborting. [INFO] [stderr] error: test failed, to rerun pass `-p mini-lsm --lib` [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `/opt/rustwide/target/debug/deps/mini_lsm-2231aa89ad76cb33` (signal: 6, SIGABRT: process abort signal) [INFO] running `Command { std: "docker" "inspect" "c9091d9e6e6164259fe223c676bf8241354e886731c889d81a6768e2a4eb61a2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c9091d9e6e6164259fe223c676bf8241354e886731c889d81a6768e2a4eb61a2", kill_on_drop: false }` [INFO] [stdout] c9091d9e6e6164259fe223c676bf8241354e886731c889d81a6768e2a4eb61a2