[INFO] cloning repository https://github.com/jbarthelmess/practice_collections
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jbarthelmess/practice_collections" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjbarthelmess%2Fpractice_collections", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjbarthelmess%2Fpractice_collections'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1eaa7be0ef06c5642c5ab359566795fb056d2bbd
[INFO] testing jbarthelmess/practice_collections against master#1871252fc8bb672d40787e67404e6eaae7059369 for pr-125151
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjbarthelmess%2Fpractice_collections" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jbarthelmess/practice_collections on toolchain 1871252fc8bb672d40787e67404e6eaae7059369
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jbarthelmess/practice_collections
[INFO] finished tweaking git repo https://github.com/jbarthelmess/practice_collections
[INFO] tweaked toml for git repo https://github.com/jbarthelmess/practice_collections written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/jbarthelmess/practice_collections 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" "+1871252fc8bb672d40787e67404e6eaae7059369" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f7a8a046c8f328d434a759c913771e6d6a6d129af85446771b5919e9e21297ef
[INFO] running `Command { std: "docker" "start" "-a" "f7a8a046c8f328d434a759c913771e6d6a6d129af85446771b5919e9e21297ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f7a8a046c8f328d434a759c913771e6d6a6d129af85446771b5919e9e21297ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7a8a046c8f328d434a759c913771e6d6a6d129af85446771b5919e9e21297ef", kill_on_drop: false }`
[INFO] [stdout] f7a8a046c8f328d434a759c913771e6d6a6d129af85446771b5919e9e21297ef
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 60fac3505322ba963e4edb575d7d87350df229966a4b81f6c55edecbfff2717a
[INFO] running `Command { std: "docker" "start" "-a" "60fac3505322ba963e4edb575d7d87350df229966a4b81f6c55edecbfff2717a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling getrandom v0.2.7
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling practice_collections v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `id` is never read
[INFO] [stdout]   --> src/graph.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Node<T> {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] 11 |     id: T
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.60s
[INFO] running `Command { std: "docker" "inspect" "60fac3505322ba963e4edb575d7d87350df229966a4b81f6c55edecbfff2717a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60fac3505322ba963e4edb575d7d87350df229966a4b81f6c55edecbfff2717a", kill_on_drop: false }`
[INFO] [stdout] 60fac3505322ba963e4edb575d7d87350df229966a4b81f6c55edecbfff2717a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d7b1aa8eca6a44d0e9b00c03028001cc25ae5defeaffd9224c999c6f85f41903
[INFO] running `Command { std: "docker" "start" "-a" "d7b1aa8eca6a44d0e9b00c03028001cc25ae5defeaffd9224c999c6f85f41903", kill_on_drop: false }`
[INFO] [stderr]    Compiling practice_collections v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `id` is never read
[INFO] [stdout]   --> src/graph.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Node<T> {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] 11 |     id: T
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `id` is never read
[INFO] [stdout]   --> src/graph.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Node<T> {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] 11 |     id: T
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.61s
[INFO] running `Command { std: "docker" "inspect" "d7b1aa8eca6a44d0e9b00c03028001cc25ae5defeaffd9224c999c6f85f41903", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7b1aa8eca6a44d0e9b00c03028001cc25ae5defeaffd9224c999c6f85f41903", kill_on_drop: false }`
[INFO] [stdout] d7b1aa8eca6a44d0e9b00c03028001cc25ae5defeaffd9224c999c6f85f41903
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a77fb0193673e4266336f4848bdcf2527fbb2f11898d081bfbad3d381701c5c0
[INFO] running `Command { std: "docker" "start" "-a" "a77fb0193673e4266336f4848bdcf2527fbb2f11898d081bfbad3d381701c5c0", kill_on_drop: false }`
[INFO] [stderr] warning: field `id` is never read
[INFO] [stderr]   --> src/graph.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub struct Node<T> {
[INFO] [stderr]    |            ---- field in this struct
[INFO] [stderr] 11 |     id: T
[INFO] [stderr]    |     ^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `practice_collections` (lib) generated 1 warning
[INFO] [stderr] warning: `practice_collections` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/practice_collections-dd7af96267df3ba4)
[INFO] [stdout] 
[INFO] [stdout] running 59 tests
[INFO] [stdout] test avl_tree::tests::add_tests::left_rotation_left_heavy_right_child ... ok
[INFO] [stdout] test avl_tree::tests::add_tests::left_rotation_left_heavy_right_child_no_right_child ... ok
[INFO] [stdout] test avl_tree::tests::add_tests::left_rotation_right_heavy_right_child ... ok
[INFO] [stdout] test avl_tree::tests::add_tests::left_rotation_right_heavy_right_child_no_left_child ... ok
[INFO] [stdout] test avl_tree::tests::add_tests::node_add_duplicate ... ok
[INFO] [stdout] test avl_tree::tests::add_tests::node_add_left ... ok
[INFO] [stdout] test avl_tree::tests::add_tests::node_add_right ... ok
[INFO] [stdout] test avl_tree::tests::add_tests::right_rotation_left_heavy_left_child ... ok
[INFO] [stdout] test avl_tree::tests::add_tests::right_rotation_left_heavy_left_child_no_right_child ... ok
[INFO] [stdout] test avl_tree::tests::add_tests::right_rotation_right_heavy_left_child ... ok
[INFO] [stdout] test avl_tree::tests::add_tests::right_rotation_right_heavy_left_child_no_left_child ... ok
[INFO] [stdout] test avl_tree::tests::add_tests::simple_left_rotation ... ok
[INFO] [stdout] test avl_tree::tests::add_tests::simple_right_rotation ... ok
[INFO] [stdout] test avl_tree::tests::iterator_tests::empty_tree_iterator ... ok
[INFO] [stdout] test avl_tree::tests::iterator_tests::initial_iterator_tests ... ok
[INFO] [stdout] test avl_tree::tests::remove_tests::bigger_tree_test_remove_from_left_half ... ok
[INFO] [stdout] test avl_tree::tests::remove_tests::remove_left_child_right_heavy ... ok
[INFO] [stdout] test avl_tree::tests::remove_tests::bigger_tree_test_remove_from_right_half ... ok
[INFO] [stdout] test avl_tree::tests::remove_tests::remove_left_child_right_heavy_no_neighbor ... ok
[INFO] [stdout] test avl_tree::tests::remove_tests::remove_left ... ok
[INFO] [stdout] test avl_tree::tests::remove_tests::remove_right_child_left_heavy_opposite_neighbor ... ok
[INFO] [stdout] test avl_tree::tests::remove_tests::remove_left_child_right_heavy_opposite_neighbor ... ok
[INFO] [stdout] test avl_tree::tests::remove_tests::remove_root_with_left_child ... ok
[INFO] [stdout] test avl_tree::tests::remove_tests::remove_root_with_right_child ... ok
[INFO] [stdout] test avl_tree::tests::remove_tests::remove_right ... ok
[INFO] [stdout] test avl_tree::tests::remove_tests::remove_root_with_two_children_left_heavy ... ok
[INFO] [stdout] test avl_tree::tests::search_for_item_in_tree ... ok
[INFO] [stdout] test avl_tree::tests::search_for_item_not_in_tree ... ok
[INFO] [stdout] test avl_tree::tests::tree_tests::add_to_empty_tree ... ok
[INFO] [stdout] test avl_tree::tests::tree_tests::add_to_tree_failure ... ok
[INFO] [stdout] test avl_tree::tests::remove_tests::remove_root ... ok
[INFO] [stdout] test avl_tree::tests::tree_tests::remove_from_empty_tree ... ok
[INFO] [stdout] test avl_tree::tests::remove_tests::remove_right_child_left_heavy_no_neighbor ... ok
[INFO] [stdout] test avl_tree::tests::remove_tests::remove_right_child_left_heavy ... ok
[INFO] [stdout] test avl_tree::tests::remove_tests::remove_root_with_two_children ... ok
[INFO] [stdout] test avl_tree::tests::tree_tests::remove_from_tree_failure ... ok
[INFO] [stdout] test avl_tree::tests::tree_tests::remove_from_tree_success ... ok
[INFO] [stdout] test avl_tree::tests::tree_tests::search_in_empty_tree ... ok
[INFO] [stdout] test avl_tree::tests::tree_tests::tree_construction ... ok
[INFO] [stdout] test binary_tree::tests::add_test_2 ... ok
[INFO] [stdout] test binary_tree::tests::add_test_1 ... ok
[INFO] [stdout] test heap::tests::empty_heap ... ok
[INFO] [stdout] test binary_tree::tests::add_test_3 ... ok
[INFO] [stdout] test heap::tests::initial_vector_heapify ... ok
[INFO] [stdout] test binary_tree::tests::add_test_4 ... ok
[INFO] [stdout] test heap::tests::initial_vector_heapify_min_heap ... ok
[INFO] [stdout] test stack::tests::test_depth_many ... ok
[INFO] [stdout] test stack::tests::test_depth_one ... ok
[INFO] [stdout] test stack::tests::test_is_empty_false ... ok
[INFO] [stdout] test stack::tests::test_is_empty_true ... ok
[INFO] [stdout] test stack::tests::test_peek_empty ... ok
[INFO] [stdout] test heap::tests::pushing_multiple_should_get_largest_from_pop ... ok
[INFO] [stdout] test stack::tests::test_depth_empty ... ok
[INFO] [stdout] test stack::tests::test_pop_one_item ... ok
[INFO] [stdout] test stack::tests::test_push_no_panic ... ok
[INFO] [stdout] test stack::tests::test_peek_items ... ok
[INFO] [stdout] test stack::tests::test_pop_empty ... ok
[INFO] [stdout] test stack::tests::test_pop_multiple_items ... ok
[INFO] [stdout] test heap::tests::pushing_multiple_should_get_smallest_from_pop ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 59 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests practice_collections
[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" "a77fb0193673e4266336f4848bdcf2527fbb2f11898d081bfbad3d381701c5c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a77fb0193673e4266336f4848bdcf2527fbb2f11898d081bfbad3d381701c5c0", kill_on_drop: false }`
[INFO] [stdout] a77fb0193673e4266336f4848bdcf2527fbb2f11898d081bfbad3d381701c5c0