[INFO] fetching crate bztree 0.1.0...
[INFO] testing bztree-0.1.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate bztree 0.1.0 into /workspace/builds/worker-87/source
[INFO] validating manifest of crates.io crate bztree 0.1.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bztree 0.1.0
[INFO] finished tweaking crates.io crate bztree 0.1.0
[INFO] tweaked toml for crates.io crate bztree 0.1.0 written to /workspace/builds/worker-87/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 01934c61bce0d4774abefdfd8c6eed36c8e7afd8f7e521bae3ac0faad03180e5
[INFO] running `Command { std: "docker" "start" "-a" "01934c61bce0d4774abefdfd8c6eed36c8e7afd8f7e521bae3ac0faad03180e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "01934c61bce0d4774abefdfd8c6eed36c8e7afd8f7e521bae3ac0faad03180e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01934c61bce0d4774abefdfd8c6eed36c8e7afd8f7e521bae3ac0faad03180e5", kill_on_drop: false }`
[INFO] [stdout] 01934c61bce0d4774abefdfd8c6eed36c8e7afd8f7e521bae3ac0faad03180e5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 36b0c7fd0d444a2eee7048d6a4a035f47e5a6bae34ebe3db5d1b4ed0f2b83edb
[INFO] running `Command { std: "docker" "start" "-a" "36b0c7fd0d444a2eee7048d6a4a035f47e5a6bae34ebe3db5d1b4ed0f2b83edb", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling mwcas v0.1.0
[INFO] [stderr]    Compiling bztree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `first_kv`
[INFO] [stdout]    --> src/node.rs:477:12
[INFO] [stdout]     |
[INFO] [stdout] 477 |     pub fn first_kv<'g>(&'g self, guard: &'g Guard) -> Option<(&'g K, &'g V)>
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `peek_next`
[INFO] [stdout]     --> src/node.rs:1209:12
[INFO] [stdout]      |
[INFO] [stdout] 1209 |     pub fn peek_next(&mut self) -> Option<(&'a K, &'a V)> {
[INFO] [stdout]      |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.12s
[INFO] running `Command { std: "docker" "inspect" "36b0c7fd0d444a2eee7048d6a4a035f47e5a6bae34ebe3db5d1b4ed0f2b83edb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36b0c7fd0d444a2eee7048d6a4a035f47e5a6bae34ebe3db5d1b4ed0f2b83edb", kill_on_drop: false }`
[INFO] [stdout] 36b0c7fd0d444a2eee7048d6a4a035f47e5a6bae34ebe3db5d1b4ed0f2b83edb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 843520f8adba98ba0b7a2515591fd4e1a62da88528f0fbbade61909c7227fa2a
[INFO] running `Command { std: "docker" "start" "-a" "843520f8adba98ba0b7a2515591fd4e1a62da88528f0fbbade61909c7227fa2a", kill_on_drop: false }`
[INFO] [stderr]    Compiling fs_extra v1.2.0
[INFO] [stderr]    Compiling cc v1.0.70
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling crossbeam-deque v0.8.1
[INFO] [stdout] warning: associated function is never used: `first_kv`
[INFO] [stdout]    --> src/node.rs:477:12
[INFO] [stdout]     |
[INFO] [stdout] 477 |     pub fn first_kv<'g>(&'g self, guard: &'g Guard) -> Option<(&'g K, &'g V)>
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `peek_next`
[INFO] [stdout]     --> src/node.rs:1209:12
[INFO] [stdout]      |
[INFO] [stdout] 1209 |     pub fn peek_next(&mut self) -> Option<(&'a K, &'a V)> {
[INFO] [stdout]      |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling jemalloc-sys v0.3.2
[INFO] [stderr]    Compiling criterion v0.3.5
[INFO] [stderr]    Compiling jemallocator v0.3.2
[INFO] [stderr]    Compiling bztree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1m 06s
[INFO] running `Command { std: "docker" "inspect" "843520f8adba98ba0b7a2515591fd4e1a62da88528f0fbbade61909c7227fa2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "843520f8adba98ba0b7a2515591fd4e1a62da88528f0fbbade61909c7227fa2a", kill_on_drop: false }`
[INFO] [stdout] 843520f8adba98ba0b7a2515591fd4e1a62da88528f0fbbade61909c7227fa2a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 47aa9c8be8a4154159ad93fd44341b4e37e83bd382c2e8af62dbac67c71af311
[INFO] running `Command { std: "docker" "start" "-a" "47aa9c8be8a4154159ad93fd44341b4e37e83bd382c2e8af62dbac67c71af311", kill_on_drop: false }`
[INFO] [stderr] warning: associated function is never used: `first_kv`
[INFO] [stderr]    --> src/node.rs:477:12
[INFO] [stderr]     |
[INFO] [stderr] 477 |     pub fn first_kv<'g>(&'g self, guard: &'g Guard) -> Option<(&'g K, &'g V)>
[INFO] [stderr]     |            ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `peek_next`
[INFO] [stderr]     --> src/node.rs:1209:12
[INFO] [stderr]      |
[INFO] [stderr] 1209 |     pub fn peek_next(&mut self) -> Option<(&'a K, &'a V)> {
[INFO] [stderr]      |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `bztree` (lib) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/bztree-88b9aaa6b594eb29)
[INFO] [stdout] 
[INFO] [stdout] running 48 tests
[INFO] [stdout] test node::tests::iter ... ok
[INFO] [stdout] test node::tests::iter_on_empty_sorted_space ... ok
[INFO] [stdout] test node::tests::iter_on_empty_unsorted_space ... ok
[INFO] [stdout] test node::tests::iter_reverted ... ok
[INFO] [stdout] test node::tests::max ... ok
[INFO] [stdout] test node::tests::metadata_tests::create_visible_metadata ... ok
[INFO] [stdout] test node::tests::metadata_tests::create_deleted_metadata ... ok
[INFO] [stdout] test node::tests::insert_existing_key ... ok
[INFO] [stdout] test node::tests::metadata_tests::create_reserved_metadata ... ok
[INFO] [stdout] test node::tests::min ... ok
[INFO] [stdout] test node::tests::peek_next ... ok
[INFO] [stdout] test node::tests::delete_keys ... ok
[INFO] [stdout] test node::tests::peek_next_back ... ok
[INFO] [stdout] test node::tests::range ... ok
[INFO] [stdout] test node::tests::scan_on_unsorted_node ... ok
[INFO] [stdout] test node::tests::scan_on_sorted_node ... ok
[INFO] [stdout] test node::tests::split_empty_node ... ok
[INFO] [stdout] test status_word::tests::create_empty_status_word ... ok
[INFO] [stdout] test status_word::tests::reserve_entry ... ok
[INFO] [stdout] test status_word::tests::make_frozen ... ok
[INFO] [stdout] test tests::delete ... ok
[INFO] [stdout] test tests::insert ... ok
[INFO] [stdout] test tests::mixed_scan_on_root_node ... ok
[INFO] [stdout] test status_word::tests::create_filled_status_word ... ok
[INFO] [stdout] test tests::forward_scan ... ok
[INFO] [stdout] test tests::mixed_scan ... ok
[INFO] [stdout] test tests::last ... ok
[INFO] [stdout] test tests::first ... ok
[INFO] [stdout] test tests::test_iter ... ok
[INFO] [stdout] test tests::reversed_scan ... ok
[INFO] [stdout] test tests::upsert ... ok
[INFO] [stdout] test tests::test_iter_on_root_node ... ok
[INFO] [stdout] test tests::test_rev_iter_on_root_node ... ok
[INFO] [stdout] test tests::scan_after_delete ... ok
[INFO] [stdout] test node::tests::delete_non_existing_keys ... ok
[INFO] [stdout] test tests::reversed_scan_with_deletes ... ok
[INFO] [stdout] test node::tests::insert_and_search ... ok
[INFO] [stdout] test tests::scan_outside_of_existing_key_range ... ok
[INFO] [stdout] test node::tests::merge_nodes ... ok
[INFO] [stdout] test node::tests::upsert_and_search ... ok
[INFO] [stdout] test node::tests::update_key ... ok
[INFO] [stdout] test node::tests::try_merge_when_no_space_left ... ok
[INFO] [stdout] test node::tests::split_node ... ok
[INFO] [stdout] test node::tests::compact_node ... ok
[INFO] [stdout] test tests::conditional_insert ... ok
[INFO] [stdout] test tests::pop_last ... ok
[INFO] [stdout] test tests::conditional_remove ... ok
[INFO] [stdout] test tests::pop_first ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 48 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.12s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests bztree
[INFO] [stdout] 
[INFO] [stdout] running 12 tests
[INFO] [stdout] test src/lib.rs - BzTree<K, V>::insert (line 129) ... ok
[INFO] [stdout] test src/lib.rs - BzTree<K, V>::last (line 359) ... ok
[INFO] [stdout] test src/lib.rs - BzTree<K, V>::iter (line 316) ... ok
[INFO] [stdout] test src/lib.rs - BzTree<K, V>::upsert (line 175) ... ok
[INFO] [stdout] test src/lib.rs - BzTree<K, V>::get (line 259) ... ok
[INFO] [stdout] test src/lib.rs - BzTree<K, V>::first (line 339) ... ok
[INFO] [stdout] test src/lib.rs - BzTree<K, V>::range (line 284) ... ok
[INFO] [stdout] test src/lib.rs - BzTree<K, V>::delete (line 222) ... ok
[INFO] [stdout] test src/lib.rs - BzTree<K, V>::compute (line 454) ... ok
[INFO] [stdout] test src/lib.rs - (line 9) ... ok
[INFO] [stdout] test src/lib.rs - BzTree<K, V>::pop_first (line 379) ... ok
[INFO] [stdout] test src/lib.rs - BzTree<K, V>::pop_last (line 412) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 12 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.70s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "47aa9c8be8a4154159ad93fd44341b4e37e83bd382c2e8af62dbac67c71af311", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47aa9c8be8a4154159ad93fd44341b4e37e83bd382c2e8af62dbac67c71af311", kill_on_drop: false }`
[INFO] [stdout] 47aa9c8be8a4154159ad93fd44341b4e37e83bd382c2e8af62dbac67c71af311