[INFO] fetching crate rb_tree 0.3.1...
[INFO] testing rb_tree-0.3.1 against 1.49.0 for beta-1.50-1
[INFO] extracting crate rb_tree 0.3.1 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate rb_tree 0.3.1 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rb_tree 0.3.1
[INFO] finished tweaking crates.io crate rb_tree 0.3.1
[INFO] tweaked toml for crates.io crate rb_tree 0.3.1 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate rb_tree 0.3.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1cb7f21c952a876418960037f13526a150a1f4bb38fed35a76c9dab67becb02d
[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" "1cb7f21c952a876418960037f13526a150a1f4bb38fed35a76c9dab67becb02d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1cb7f21c952a876418960037f13526a150a1f4bb38fed35a76c9dab67becb02d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1cb7f21c952a876418960037f13526a150a1f4bb38fed35a76c9dab67becb02d", kill_on_drop: false }`
[INFO] [stdout] 1cb7f21c952a876418960037f13526a150a1f4bb38fed35a76c9dab67becb02d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1bfbd20dd86322307478b7804a67240eb92c1f37531b6ebf5700513dedfe5cdf
[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" "1bfbd20dd86322307478b7804a67240eb92c1f37531b6ebf5700513dedfe5cdf", kill_on_drop: false }`
[INFO] [stderr]    Compiling rb_tree v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.72s
[INFO] running `Command { std: "docker" "inspect" "1bfbd20dd86322307478b7804a67240eb92c1f37531b6ebf5700513dedfe5cdf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1bfbd20dd86322307478b7804a67240eb92c1f37531b6ebf5700513dedfe5cdf", kill_on_drop: false }`
[INFO] [stdout] 1bfbd20dd86322307478b7804a67240eb92c1f37531b6ebf5700513dedfe5cdf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 392691d4d59e3d97f34a2413223de9572e2bf0fd4bdba2ae440efadd98d743a9
[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" "392691d4d59e3d97f34a2413223de9572e2bf0fd4bdba2ae440efadd98d743a9", kill_on_drop: false }`
[INFO] [stderr]    Compiling rb_tree v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.22s
[INFO] running `Command { std: "docker" "inspect" "392691d4d59e3d97f34a2413223de9572e2bf0fd4bdba2ae440efadd98d743a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "392691d4d59e3d97f34a2413223de9572e2bf0fd4bdba2ae440efadd98d743a9", kill_on_drop: false }`
[INFO] [stdout] 392691d4d59e3d97f34a2413223de9572e2bf0fd4bdba2ae440efadd98d743a9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3925a84fc6b287e71c13657b6e8428d6ce3b244fd2020208df746750fb99c60a
[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" "3925a84fc6b287e71c13657b6e8428d6ce3b244fd2020208df746750fb99c60a", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rb_tree-7a2de545ba1c2fe3
[INFO] [stdout] 
[INFO] [stdout] running 34 tests
[INFO] [stdout] test rbtree_tests::test_add_existing ... ok
[INFO] [stdout] test rbtree_tests::test_black_leaf_removal ... ok
[INFO] [stdout] test rbtree_tests::test_difference ... ok
[INFO] [stdout] test rbtree_tests::test_insertion_case1_left ... ok
[INFO] [stdout] test rbtree_tests::test_insertion_case1_right ... ok
[INFO] [stdout] test rbtree_tests::test_insertion_case2_left ... ok
[INFO] [stdout] test rbtree_tests::test_get ... ok
[INFO] [stdout] test rbtree_tests::test_gets_correct_descendant ... ok
[INFO] [stdout] test rbtree_tests::test_intersection ... ok
[INFO] [stdout] test rbtree_tests::test_insertion_case2_right ... ok
[INFO] [stdout] test rbtree_tests::test_contains_and_is_empty ... ok
[INFO] [stdout] test rbtree_tests::test_insertion_case3_at_root ... ok
[INFO] [stdout] test rbtree_tests::test_insertion_case3_not_root ... ok
[INFO] [stdout] test rbtree_tests::test_peek_back ... ok
[INFO] [stdout] test rbtree_tests::test_peek ... ok
[INFO] [stdout] test rbtree_tests::test_ordered ... ok
[INFO] [stdout] test rbtree_tests::test_complex_insertion ... ok
[INFO] [stdout] test rbtree_tests::test_removal_empty ... ok
[INFO] [stdout] test rbtree_tests::test_pop ... ok
[INFO] [stdout] test rbtree_tests::test_removal_simple_case ... ok
[INFO] [stdout] test rbtree_tests::test_removal_case2_outer ... ok
[INFO] [stdout] test rbtree_tests::test_remove_root ... ok
[INFO] [stdout] test rbtree_tests::test_pop_back ... ok
[INFO] [stdout] test rbtree_tests::test_remove_only_value ... ok
[INFO] [stdout] test rbtree_tests::test_remove_accumulative_changes ... ok
[INFO] [stdout] test rbtree_tests::test_removeal_case4 ... ok
[INFO] [stdout] test rbtree_tests::test_removal_notfound ... ok
[INFO] [stdout] test rbtree_tests::test_removal_no_double_black ... ok
[INFO] [stdout] test rbtree_tests::test_union ... ok
[INFO] [stdout] test rbtree_tests::test_removal_case2_inner ... ok
[INFO] [stdout] test rbtree_tests::test_print ... ok
[INFO] [stdout] test rbtree_tests::test_insertion_transfer_children ... ok
[INFO] [stdout] test rbtree_tests::test_symmetric_difference ... ok
[INFO] [stdout] test rbtree_tests::test_removal_case3_red_parent ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 34 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rb_tree
[INFO] [stdout] 
[INFO] [stdout] running 64 tests
[INFO] [stdout] test src/rbmap.rs - rbmap::RBMap<K, V>::is_empty (line 196) ... ok
[INFO] [stdout] test src/rbmap.rs - rbmap::RBMap<K, V>::get (line 87) ... ok
[INFO] [stdout] test src/rbmap.rs - rbmap::RBMap<K, V>::get_pair (line 109) ... ok
[INFO] [stdout] test src/rbmap.rs - rbmap::RBMap<K, V>::len (line 211) ... ok
[INFO] [stdout] test src/rbmap.rs - rbmap::RBMap<K, V>::get_pair_mut (line 132) ... ok
[INFO] [stdout] test src/rbmap.rs - rbmap::RBMap<K, V>::clear (line 26) ... ok
[INFO] [stdout] test src/rbmap.rs - rbmap::RBMap<K, V>::get_mut (line 154) ... ok
[INFO] [stdout] test src/rbmap.rs - rbmap::RBMap<K, V>::contains_key (line 44) ... ok
[INFO] [stdout] test src/rbmap.rs - rbmap::RBMap<K, V>::insert (line 176) ... ok
[INFO] [stdout] test src/rbmap.rs - rbmap::RBMap<K, V>::entry (line 422) ... ok
[INFO] [stdout] test src/rbmap.rs - rbmap::RBMap<K, V>::drain (line 65) ... ok
[INFO] [stdout] test src/rbmap.rs - rbmap::RBMap<K, V>::keys (line 398) ... ok
[INFO] [stdout] test src/rbmap.rs - rbmap::RBMap<K, V>::iter (line 298) ... ok
[INFO] [stdout] test src/rbmap.rs - rbmap::RBMap<K, V>::iter_mut (line 323) ... ok
[INFO] [stdout] test src/rbmap.rs - rbmap::RBMap<K, V>::remove_entry (line 252) ... ok
[INFO] [stdout] test src/rbmap.rs - rbmap::RBMap<K, V>::new (line 11) ... ok
[INFO] [stdout] test src/rbqueue.rs - rbqueue::RBQueue<T, P>::clear (line 117) ... ok
[INFO] [stdout] test src/rbmap.rs - rbmap::RBMap<K, V>::retain (line 272) ... ok
[INFO] [stdout] test src/rbmap.rs - rbmap::RBMap<K, V>::remove (line 231) ... ok
[INFO] [stdout] test src/rbqueue.rs - rbqueue::RBQueue<T, P>::contains (line 262) ... ok
[INFO] [stdout] test src/rbqueue.rs - rbqueue::RBQueue<T, P>::get (line 277) ... ok
[INFO] [stdout] test src/rbmap.rs - rbmap::RBMap<K, V>::values (line 348) ... ok
[INFO] [stdout] test src/rbqueue.rs - rbqueue::RBQueue<T, P>::len (line 182) ... ok
[INFO] [stdout] test src/rbqueue.rs - rbqueue::RBQueue<T, P>::drain (line 135) ... ok
[INFO] [stdout] test src/rbmap.rs - rbmap::RBMap<K, V>::values_mut (line 373) ... ok
[INFO] [stdout] test src/rbqueue.rs - rbqueue::RBQueue<T, P>::is_empty (line 200) ... ok
[INFO] [stdout] test src/rbqueue.rs - rbqueue::RBQueue<T, P>::insert (line 220) ... ok
[INFO] [stdout] test src/rbqueue.rs - rbqueue::RBQueue<T, P>::iter (line 422) ... ok
[INFO] [stdout] test src/rbqueue.rs - rbqueue::RBQueue<T, P>::peek (line 366) ... ok
[INFO] [stdout] test src/rbqueue.rs - rbqueue::RBQueue<T, P>::peek_back (line 406) ... ok
[INFO] [stdout] test src/rbqueue.rs - rbqueue::RBQueue<T, P>::new (line 81) ... ok
[INFO] [stdout] test src/rbqueue.rs - rbqueue::RBQueue<T, P>::pop (line 343) ... ok
[INFO] [stdout] test src/rbqueue.rs - rbqueue::RBQueue<T, P>::pop_back (line 383) ... ok
[INFO] [stdout] test src/rbqueue.rs - rbqueue::RBQueue<T, P>::ordered (line 163) ... ok
[INFO] [stdout] test src/rbqueue.rs - rbqueue::RBQueue<T, P>::remove (line 319) ... ok
[INFO] [stdout] test src/rbqueue.rs - rbqueue::RBQueue<T, P>::take (line 296) ... ok
[INFO] [stdout] test src/rbtree.rs - rbtree::RBTree<T>::contains (line 197) ... ok
[INFO] [stdout] test src/rbtree.rs - rbtree::RBTree<T>::clear (line 56) ... ok
[INFO] [stdout] test src/rbqueue.rs - rbqueue::RBQueue<T, P>::retain (line 441) ... ok
[INFO] [stdout] test src/rbqueue.rs - rbqueue::RBQueue<T, P>::replace (line 242) ... ok
[INFO] [stdout] test src/rbqueue.rs - rbqueue_c_new (line 21) ... ok
[INFO] [stdout] test src/rbtree.rs - rbtree::RBTree<T>::get (line 212) ... ok
[INFO] [stdout] test src/rbtree.rs - rbtree::RBTree<T>::is_empty (line 135) ... ok
[INFO] [stdout] test src/rbtree.rs - rbtree::RBTree<T>::drain (line 74) ... ok
[INFO] [stdout] test src/rbtree.rs - rbtree::RBTree<T>::insert (line 155) ... ok
[INFO] [stdout] test src/rbtree.rs - rbtree::RBTree<T>::difference (line 384) ... ok
[INFO] [stdout] test src/rbtree.rs - rbtree::RBTree<T>::intersection (line 453) ... ok
[INFO] [stdout] test src/rbtree.rs - rbtree::RBTree<T>::new (line 39) ... ok
[INFO] [stdout] test src/rbtree.rs - rbtree::RBTree<T>::is_superset (line 552) ... ok
[INFO] [stdout] test src/rbtree.rs - rbtree::RBTree<T>::is_subset (line 532) ... ok
[INFO] [stdout] test src/rbtree.rs - rbtree::RBTree<T>::is_disjoint (line 513) ... ok
[INFO] [stdout] test src/rbtree.rs - rbtree::RBTree<T>::iter (line 361) ... ok
[INFO] [stdout] test src/rbtree.rs - rbtree::RBTree<T>::len (line 117) ... ok
[INFO] [stdout] test src/rbtree.rs - rbtree::RBTree<T>::pop_back (line 322) ... ok
[INFO] [stdout] test src/rbtree.rs - rbtree::RBTree<T>::peek_back (line 345) ... ok
[INFO] [stdout] test src/rbtree.rs - rbtree::RBTree<T>::peek (line 305) ... ok
[INFO] [stdout] test src/rbtree.rs - rbtree::RBTree<T>::pop (line 282) ... ok
[INFO] [stdout] test src/rbtree.rs - rbtree::RBTree<T>::ordered (line 98) ... ok
[INFO] [stdout] test src/rbtree.rs - rbtree::RBTree<T>::remove (line 258) ... ok
[INFO] [stdout] test src/rbtree.rs - rbtree::RBTree<T>::take (line 235) ... ok
[INFO] [stdout] test src/rbtree.rs - rbtree::RBTree<T>::replace (line 177) ... ok
[INFO] [stdout] test src/rbtree.rs - rbtree::RBTree<T>::retain (line 571) ... ok
[INFO] [stdout] test src/rbtree.rs - rbtree::RBTree<T>::symmetric_difference (line 419) ... ok
[INFO] [stdout] test src/rbtree.rs - rbtree::RBTree<T>::union (line 483) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 64 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "3925a84fc6b287e71c13657b6e8428d6ce3b244fd2020208df746750fb99c60a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3925a84fc6b287e71c13657b6e8428d6ce3b244fd2020208df746750fb99c60a", kill_on_drop: false }`
[INFO] [stdout] 3925a84fc6b287e71c13657b6e8428d6ce3b244fd2020208df746750fb99c60a