[INFO] fetching crate search_trees 0.0.1...
[INFO] testing search_trees-0.0.1 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate search_trees 0.0.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate search_trees 0.0.1 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate search_trees 0.0.1
[INFO] finished tweaking crates.io crate search_trees 0.0.1
[INFO] tweaked toml for crates.io crate search_trees 0.0.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate search_trees 0.0.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b9493d5850d30680570b0fc70f23a677e4d5742c7a7484ee0bf94af5c7f2c18c
[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" "b9493d5850d30680570b0fc70f23a677e4d5742c7a7484ee0bf94af5c7f2c18c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b9493d5850d30680570b0fc70f23a677e4d5742c7a7484ee0bf94af5c7f2c18c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9493d5850d30680570b0fc70f23a677e4d5742c7a7484ee0bf94af5c7f2c18c", kill_on_drop: false }`
[INFO] [stdout] b9493d5850d30680570b0fc70f23a677e4d5742c7a7484ee0bf94af5c7f2c18c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b39f1afc7547bcfc440677be82a97707287fba0702c05fbf1ddfbd97830a28c1
[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" "b39f1afc7547bcfc440677be82a97707287fba0702c05fbf1ddfbd97830a28c1", kill_on_drop: false }`
[INFO] [stderr]    Compiling search_trees v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.62s
[INFO] running `Command { std: "docker" "inspect" "b39f1afc7547bcfc440677be82a97707287fba0702c05fbf1ddfbd97830a28c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b39f1afc7547bcfc440677be82a97707287fba0702c05fbf1ddfbd97830a28c1", kill_on_drop: false }`
[INFO] [stdout] b39f1afc7547bcfc440677be82a97707287fba0702c05fbf1ddfbd97830a28c1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3112419c8c86d9f60f70561bb68f23f8b89816410321ac4c743e8c6d574f1d53
[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" "3112419c8c86d9f60f70561bb68f23f8b89816410321ac4c743e8c6d574f1d53", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling const_fn v0.4.3
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling syn v1.0.53
[INFO] [stderr]    Compiling itoa v0.4.6
[INFO] [stderr]    Compiling serde_json v1.0.60
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling oorandom v11.1.3
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling serde_cbor v0.11.1
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling plotters v0.2.15
[INFO] [stderr]    Compiling walkdir v2.3.1
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]    Compiling regex-automata v0.1.9
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.1
[INFO] [stderr]    Compiling bstr v0.2.14
[INFO] [stderr]    Compiling crossbeam-deque v0.8.0
[INFO] [stderr]    Compiling criterion-plot v0.4.3
[INFO] [stderr]    Compiling tinytemplate v1.1.0
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]    Compiling csv v1.1.5
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling criterion v0.3.3
[INFO] [stderr]    Compiling search_trees v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1m 18s
[INFO] running `Command { std: "docker" "inspect" "3112419c8c86d9f60f70561bb68f23f8b89816410321ac4c743e8c6d574f1d53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3112419c8c86d9f60f70561bb68f23f8b89816410321ac4c743e8c6d574f1d53", kill_on_drop: false }`
[INFO] [stdout] 3112419c8c86d9f60f70561bb68f23f8b89816410321ac4c743e8c6d574f1d53
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 420fefe20180f8f99ec2eaa77823d3617fb0adfabc46c15dc659648d94c8becc
[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" "420fefe20180f8f99ec2eaa77823d3617fb0adfabc46c15dc659648d94c8becc", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/search_trees-22336a4acad4b14a
[INFO] [stdout] 
[INFO] [stdout] running 29 tests
[INFO] [stdout] test avltree::test::test_debug_delete_avl ... ok
[INFO] [stdout] test bstree::test::test_contains ... ok
[INFO] [stdout] test bstree::test::test_delete3 ... ok
[INFO] [stdout] test bstree::test::test_delete4 ... ok
[INFO] [stdout] test bstree::test::test_delete ... ok
[INFO] [stdout] test bstree::test::test_count_leaves ... ok
[INFO] [stdout] test bstree::test::test_delete2 ... ok
[INFO] [stdout] test rbtree::test::insert ... ok
[INFO] [stdout] test avltree::test::test_basic_avl ... ok
[INFO] [stdout] test rbtree::test::insert_and_search ... ok
[INFO] [stdout] test rbtree::test::insert_delete ... ok
[INFO] [stdout] test bstree::test::test_min ... ok
[INFO] [stdout] test bstree::test::test_demo ... ok
[INFO] [stdout] test bstree::test::test_height ... ok
[INFO] [stdout] test bstree::test::test_is_empty ... ok
[INFO] [stdout] test bstree::test::test_len ... ok
[INFO] [stdout] test bstree::test::test_max ... ok
[INFO] [stdout] test rbtree::test::rotations ... ok
[INFO] [stdout] test rbtree::test::max ... ok
[INFO] [stdout] test rbtree::test::tree_traversal ... ok
[INFO] [stdout] test bstree::test::insert_delete_random ... ok
[INFO] [stdout] test rbtree::test::insert_delete_inorder ... ok
[INFO] [stdout] test rbtree::test::insert_delete_random ... ok
[INFO] [stdout] test rbtree::test::insert_delete_reverse_inorder ... ok
[INFO] [stdout] test bstree::test::insert_delete_inorder ... ok
[INFO] [stdout] test bstree::test::insert_delete_reverse_inorder ... ok
[INFO] [stdout] test avltree::test::insert_delete_reverse_inorder_avl ... ok
[INFO] [stdout] test avltree::test::insert_delete_inorder_avl ... ok
[INFO] [stdout] test avltree::test::insert_delete_random_avl ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 29 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 4.56s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/search_trees-c659eb176ea5911d
[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 search_trees
[INFO] [stdout] 
[INFO] [stdout] running 25 tests
[INFO] [stdout] test src/bstree.rs - bstree (line 5) ... ok
[INFO] [stdout] test src/avltree.rs - avltree (line 5) ... ok
[INFO] [stdout] test src/base.rs - base (line 5) ... ok
[INFO] [stdout] test src/base.rs - base::QueryableTree::max (line 244) ... ok
[INFO] [stdout] test src/avltree.rs - avltree::AVLTree<T>::insert (line 293) ... ok
[INFO] [stdout] test src/base.rs - base::QueryableTree::min (line 220) ... ok
[INFO] [stdout] test src/avltree.rs - avltree::AVLTree<T>::new (line 280) ... ok
[INFO] [stdout] test src/base.rs - base::QueryableTree::len (line 288) ... ok
[INFO] [stdout] test src/base.rs - base::QueryableTree::contains (line 268) ... ok
[INFO] [stdout] test src/base.rs - base::QueryableTree::print_inorder (line 174) ... ok
[INFO] [stdout] test src/base.rs - base::QueryableTree::is_empty (line 200) ... ok
[INFO] [stdout] test src/avltree.rs - avltree::AVLTree<T>::delete (line 310) ... ok
[INFO] [stdout] test src/base.rs - base::QueryableTree::count_leaves (line 126) ... ok
[INFO] [stdout] test src/base.rs - base::QueryableTree::height (line 154) ... ok
[INFO] [stdout] test src/bstree.rs - bstree::BinarySearchTree<T>::delete (line 169) ... ok
[INFO] [stdout] test src/bstree.rs - bstree::BinarySearchTree<T>::insert (line 148) ... ok
[INFO] [stdout] test src/bstree.rs - bstree::BinarySearchTree<T>::new (line 135) ... ok
[INFO] [stdout] test src/rbtree.rs - rbtree (line 5) ... ok
[INFO] [stdout] test src/prelude.rs - prelude (line 7) ... ok
[INFO] [stdout] test src/lib.rs - (line 13) ... ok
[INFO] [stdout] test src/rbtree.rs - rbtree::RedBlackTree<T>::new (line 718) ... ok
[INFO] [stdout] test src/lib.rs - (line 53) ... ok
[INFO] [stdout] test src/rbtree.rs - rbtree::RedBlackTree<T>::insert (line 752) ... ok
[INFO] [stdout] test src/rbtree.rs - rbtree::RedBlackTree<T>::delete (line 780) ... ok
[INFO] [stdout] test src/lib.rs - (line 33) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 25 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 5.63s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "420fefe20180f8f99ec2eaa77823d3617fb0adfabc46c15dc659648d94c8becc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "420fefe20180f8f99ec2eaa77823d3617fb0adfabc46c15dc659648d94c8becc", kill_on_drop: false }`
[INFO] [stdout] 420fefe20180f8f99ec2eaa77823d3617fb0adfabc46c15dc659648d94c8becc