[INFO] fetching crate rb_tree 0.4.1...
[INFO] testing rb_tree-0.4.1 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate rb_tree 0.4.1 into /workspace/builds/worker-49/source
[INFO] validating manifest of crates.io crate rb_tree 0.4.1 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rb_tree 0.4.1
[INFO] finished tweaking crates.io crate rb_tree 0.4.1
[INFO] tweaked toml for crates.io crate rb_tree 0.4.1 written to /workspace/builds/worker-49/source/Cargo.toml
[INFO] crate crates.io crate rb_tree 0.4.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/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" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 33ad11c0e05d36243f6742caa03de65357e1626d9f03882ae55c90b189124d0e
[INFO] running `Command { std: "docker" "start" "-a" "33ad11c0e05d36243f6742caa03de65357e1626d9f03882ae55c90b189124d0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "33ad11c0e05d36243f6742caa03de65357e1626d9f03882ae55c90b189124d0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "33ad11c0e05d36243f6742caa03de65357e1626d9f03882ae55c90b189124d0e", kill_on_drop: false }`
[INFO] [stdout] 33ad11c0e05d36243f6742caa03de65357e1626d9f03882ae55c90b189124d0e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/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" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c7fe889d42facfc2aa18b5a9530a8212f0d6712933b10cb980ac8a5588dd5ec6
[INFO] running `Command { std: "docker" "start" "-a" "c7fe889d42facfc2aa18b5a9530a8212f0d6712933b10cb980ac8a5588dd5ec6", kill_on_drop: false }`
[INFO] [stderr]    Compiling rb_tree v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `Command { std: "docker" "inspect" "c7fe889d42facfc2aa18b5a9530a8212f0d6712933b10cb980ac8a5588dd5ec6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7fe889d42facfc2aa18b5a9530a8212f0d6712933b10cb980ac8a5588dd5ec6", kill_on_drop: false }`
[INFO] [stdout] c7fe889d42facfc2aa18b5a9530a8212f0d6712933b10cb980ac8a5588dd5ec6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/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" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a2570120271646ae76c2b6b957cd357272d0cdfa53626e670d61c3ef4398083a
[INFO] running `Command { std: "docker" "start" "-a" "a2570120271646ae76c2b6b957cd357272d0cdfa53626e670d61c3ef4398083a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling plotters-backend v0.3.0
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling crossbeam-utils v0.8.4
[INFO] [stderr]    Compiling memoffset v0.6.3
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling regex-automata v0.1.9
[INFO] [stderr]    Compiling plotters-svg v0.3.0
[INFO] [stderr]    Compiling plotters v0.3.0
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling rand_core v0.6.2
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.4
[INFO] [stderr]    Compiling crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling semver-parser v0.10.2
[INFO] [stderr]    Compiling rand v0.8.3
[INFO] [stderr]    Compiling crossbeam-deque v0.8.0
[INFO] [stderr]    Compiling semver v0.11.0
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling rustc_version v0.3.3
[INFO] [stderr]    Compiling cast v0.2.6
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling criterion-plot v0.4.3
[INFO] [stderr]    Compiling bstr v0.2.16
[INFO] [stderr]    Compiling serde_cbor v0.11.1
[INFO] [stderr]    Compiling csv v1.1.6
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling criterion v0.3.4
[INFO] [stderr]    Compiling rb_tree v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 17.64s
[INFO] running `Command { std: "docker" "inspect" "a2570120271646ae76c2b6b957cd357272d0cdfa53626e670d61c3ef4398083a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2570120271646ae76c2b6b957cd357272d0cdfa53626e670d61c3ef4398083a", kill_on_drop: false }`
[INFO] [stdout] a2570120271646ae76c2b6b957cd357272d0cdfa53626e670d61c3ef4398083a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/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" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f229609126ad0be49c4d17106c4662434581f66c5362a5ef26d8a6f9ea2bbb89
[INFO] running `Command { std: "docker" "start" "-a" "f229609126ad0be49c4d17106c4662434581f66c5362a5ef26d8a6f9ea2bbb89", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rb_tree-663c677064c81837)
[INFO] [stdout] 
[INFO] [stdout] running 39 tests
[INFO] [stdout] test rbtree_tests::test_complex_insertion ... ok
[INFO] [stdout] test rbtree_tests::test_add_existing ... ok
[INFO] [stdout] test rbtree_tests::test_complicated_example ... ok
[INFO] [stdout] test rbtree_tests::test_difference ... ok
[INFO] [stdout] test rbtree_tests::test_contains_and_is_empty ... ok
[INFO] [stdout] test rbtree_tests::test_black_leaf_removal ... ok
[INFO] [stdout] test rbtree_tests::test_extend ... ok
[INFO] [stdout] test rbtree_tests::test_get ... ok
[INFO] [stdout] test rbtree_tests::test_insertion_case1_left ... ok
[INFO] [stdout] test rbtree_tests::test_gets_correct_descendant ... 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_insertion_case2_right ... 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_insertion_transfer_children ... ok
[INFO] [stdout] test rbtree_tests::test_intersection ... ok
[INFO] [stdout] test rbtree_tests::test_iterator ... ok
[INFO] [stdout] test rbtree_tests::test_ordered ... ok
[INFO] [stdout] test rbtree_tests::test_peek ... ok
[INFO] [stdout] test rbtree_tests::test_peek_back ... ok
[INFO] [stdout] test rbtree_tests::test_pop ... ok
[INFO] [stdout] test rbtree_tests::test_pop_back ... ok
[INFO] [stdout] test rbtree_tests::test_print ... ok
[INFO] [stdout] test rbtree_tests::test_removal_case2_inner ... ok
[INFO] [stdout] test rbtree_tests::test_removal_case3_red_parent ... ok
[INFO] [stdout] test rbtree_tests::test_removal_empty ... ok
[INFO] [stdout] test rbtree_tests::test_removal_case2_outer ... ok
[INFO] [stdout] test rbtree_tests::test_removal_no_double_black ... ok
[INFO] [stdout] test rbtree_tests::test_removal_notfound ... ok
[INFO] [stdout] test rbtree_tests::test_removal_simple_case ... ok
[INFO] [stdout] test rbtree_tests::test_remove_accumulative_changes ... ok
[INFO] [stdout] test rbtree_tests::test_remove_immediate_right_double_black ... ok
[INFO] [stdout] test rbtree_tests::test_remove_only_value ... ok
[INFO] [stdout] test rbtree_tests::test_remove_root ... ok
[INFO] [stdout] test rbtree_tests::test_removeal_case4 ... ok
[INFO] [stdout] test rbtree_tests::test_symmetric_difference ... ok
[INFO] [stdout] test rbtree_tests::test_union ... ok
[INFO] [stdout] test stress_test::test_complex_tree_use ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 39 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 4.45s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rb_tree
[INFO] [stdout] 
[INFO] [stdout] running 86 tests
[INFO] [stdout] test src/rbmap.rs - rbmap::RBMap<K, V>::iter_mut (line 528) ... FAILED
[INFO] [stdout] test src/rbmap.rs - rbmap::RBMap<K, V>::values (line 553) ... FAILED
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name rb_tree --test /opt/rustwide/workdir/src/lib.rs -L dependency=/opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern criterion=/opt/rustwide/target/debug/deps/libcriterion-5cc9b5a841c95a2a.rlib --extern fnv=/opt/rustwide/target/debug/deps/libfnv-bb690c336855f248.rlib --extern rand=/opt/rustwide/target/debug/deps/librand-0f16c70446434957.rlib --extern rand_chacha=/opt/rustwide/target/debug/deps/librand_chacha-a7a68bbdef1e24cb.rlib --extern rb_tree=/opt/rustwide/target/debug/deps/librb_tree-c8abfbee15db5802.rlib -C embed-bitcode=no --cfg 'feature="default"' --cfg 'feature="map"' --cfg 'feature="queue"' --cfg 'feature="set"' --error-format human` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "f229609126ad0be49c4d17106c4662434581f66c5362a5ef26d8a6f9ea2bbb89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f229609126ad0be49c4d17106c4662434581f66c5362a5ef26d8a6f9ea2bbb89", kill_on_drop: false }`
[INFO] [stdout] f229609126ad0be49c4d17106c4662434581f66c5362a5ef26d8a6f9ea2bbb89