[INFO] cloning repository https://github.com/TiTiCannotProgramme/cyclic_structure_gen
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/TiTiCannotProgramme/cyclic_structure_gen" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTiTiCannotProgramme%2Fcyclic_structure_gen", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTiTiCannotProgramme%2Fcyclic_structure_gen'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 239b7831360868948897e645d4bf232ef5a6ec20
[INFO] checking TiTiCannotProgramme/cyclic_structure_gen against master#4d1bd0db7f489b22c6d8aa2385937a95412c015b for pr-114682
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTiTiCannotProgramme%2Fcyclic_structure_gen" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/TiTiCannotProgramme/cyclic_structure_gen on toolchain 4d1bd0db7f489b22c6d8aa2385937a95412c015b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d1bd0db7f489b22c6d8aa2385937a95412c015b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/TiTiCannotProgramme/cyclic_structure_gen
[INFO] finished tweaking git repo https://github.com/TiTiCannotProgramme/cyclic_structure_gen
[INFO] tweaked toml for git repo https://github.com/TiTiCannotProgramme/cyclic_structure_gen written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/TiTiCannotProgramme/cyclic_structure_gen 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" "+4d1bd0db7f489b22c6d8aa2385937a95412c015b" "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
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking TiTiCannotProgramme/cyclic_structure_gen against try#785364c7e5e0804473a3fddfb579798ea14e3493 for pr-114682
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTiTiCannotProgramme%2Fcyclic_structure_gen" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/TiTiCannotProgramme/cyclic_structure_gen on toolchain 785364c7e5e0804473a3fddfb579798ea14e3493
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+785364c7e5e0804473a3fddfb579798ea14e3493" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/TiTiCannotProgramme/cyclic_structure_gen
[INFO] finished tweaking git repo https://github.com/TiTiCannotProgramme/cyclic_structure_gen
[INFO] tweaked toml for git repo https://github.com/TiTiCannotProgramme/cyclic_structure_gen written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/TiTiCannotProgramme/cyclic_structure_gen 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" "+785364c7e5e0804473a3fddfb579798ea14e3493" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pretty v0.11.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+785364c7e5e0804473a3fddfb579798ea14e3493" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 53a11584849624c4e298455f2510163987d1fddaa58b02bbd6808fbcaf34664a
[INFO] running `Command { std: "docker" "start" "-a" "53a11584849624c4e298455f2510163987d1fddaa58b02bbd6808fbcaf34664a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "53a11584849624c4e298455f2510163987d1fddaa58b02bbd6808fbcaf34664a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53a11584849624c4e298455f2510163987d1fddaa58b02bbd6808fbcaf34664a", kill_on_drop: false }`
[INFO] [stdout] 53a11584849624c4e298455f2510163987d1fddaa58b02bbd6808fbcaf34664a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+785364c7e5e0804473a3fddfb579798ea14e3493" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 99db4dd45078f0d3170936a063af67595905c8696fa59ad32af372e4e4cb535d
[INFO] running `Command { std: "docker" "start" "-a" "99db4dd45078f0d3170936a063af67595905c8696fa59ad32af372e4e4cb535d", kill_on_drop: false }`
[INFO] [stderr]     Checking typed-arena v2.0.2
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking pretty v0.11.3
[INFO] [stderr]     Checking cyclic_structure_gen v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `WeakNodePtr`
[INFO] [stdout]  --> src/bst/avl_tree.rs:1:43
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::bst::avl_node::{Node, NodePtr, WeakNodePtr};
[INFO] [stdout]   |                                           ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `WeakNodePtr`
[INFO] [stdout]  --> src/bst/avl_tree.rs:1:43
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::bst::avl_node::{Node, NodePtr, WeakNodePtr};
[INFO] [stdout]   |                                           ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple methods are never used
[INFO] [stdout]    --> src/bst/avl_node.rs:39:12
[INFO] [stdout]     |
[INFO] [stdout] 27  | impl Node {
[INFO] [stdout]     | --------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 39  |     pub fn same_structure_to(&self, node_ptr: &NodePtr) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 67  |     pub fn set_height(&mut self) {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 71  |     pub fn get_value(&self) -> isize {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 75  |     pub fn get_left_child(&self) -> Option<NodePtr> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 82  |     pub fn get_right_child(&self) -> Option<NodePtr> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 89  |     pub fn is_left_child(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 103 |     pub fn is_right_child(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 107 |     pub fn has_both_children(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 111 |     pub fn has_no_child(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 115 |     pub fn has_only_left_child(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 119 |     pub fn has_only_right_child(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/bst/avl_tree.rs:12:12
[INFO] [stdout]     |
[INFO] [stdout] 11  | impl AvlTree {
[INFO] [stdout]     | ------------ associated items in this implementation
[INFO] [stdout] 12  |     pub fn new() -> AvlTree {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 16  |     pub fn insert(&mut self, node: Node) {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 39  |     fn find_leaf_node_for_insertion(
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 62  |     fn update_balance(&mut self, node_ptr: NodePtr) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 83  |     fn rebalance(&mut self, node_ptr: NodePtr) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 117 |     pub fn left_rotate(&mut self, node_ptr: NodePtr) {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 149 |     pub fn right_rotate(&mut self, node_ptr: NodePtr) {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 182 |     pub fn search_tree_by_value(&self, value: isize) -> Option<NodePtr> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 208 |     pub fn get_minimum_child(node_ptr: NodePtr) -> NodePtr {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 220 |     pub fn get_maximum_child(node_ptr: NodePtr) -> NodePtr {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 232 |     fn delete_root(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 249 |     fn delete_node_with_children(&mut self, node_ptr: NodePtr) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 257 |     pub fn delete_node(&mut self, node_ptr: NodePtr) {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 290 |     fn set_new_child(parent: &NodePtr, old_child: NodePtr, new_child: Option<NodePtr>) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `convert_node_to_vec` is never used
[INFO] [stdout]    --> src/bst/avl_tree.rs:302:8
[INFO] [stdout]     |
[INFO] [stdout] 302 | pub fn convert_node_to_vec(node_ptr: NodePtr) -> VecDeque<isize> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `build_free_from_values` is never used
[INFO] [stdout]    --> src/bst/avl_tree.rs:320:8
[INFO] [stdout]     |
[INFO] [stdout] 320 | pub fn build_free_from_values(values_list: Vec<isize>) -> AvlTree {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `build_free_from_index_and_values` is never used
[INFO] [stdout]    --> src/bst/avl_tree.rs:328:8
[INFO] [stdout]     |
[INFO] [stdout] 328 | pub fn build_free_from_index_and_values(
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bst/avl_tree_test.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 70 |         let mut tree = setup_tree3();
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bst/avl_tree_test.rs:78:13
[INFO] [stdout]    |
[INFO] [stdout] 78 |         let mut tree = setup_tree4();
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bst/avl_tree_test.rs:311:13
[INFO] [stdout]     |
[INFO] [stdout] 311 |         let mut tree = build_free_from_values(vec![30, 20, 10]);
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bst/avl_tree_test.rs:331:13
[INFO] [stdout]     |
[INFO] [stdout] 331 |         let mut tree = build_free_from_values(vec![15, 10, 20, 30, 40]);
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bst/avl_tree_test.rs:351:13
[INFO] [stdout]     |
[INFO] [stdout] 351 |         let mut tree = build_free_from_values(vec![30, 40, 50]);
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bst/avl_tree_test.rs:375:13
[INFO] [stdout]     |
[INFO] [stdout] 375 |         let mut tree = setup_tree6();
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bst/avl_tree_test.rs:381:13
[INFO] [stdout]     |
[INFO] [stdout] 381 |         let mut tree = setup_tree6();
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get_value` and `is_right_child` are never used
[INFO] [stdout]    --> src/bst/avl_node.rs:71:12
[INFO] [stdout]     |
[INFO] [stdout] 27  | impl Node {
[INFO] [stdout]     | --------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 71  |     pub fn get_value(&self) -> isize {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 103 |     pub fn is_right_child(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `build_free_from_index_and_values` is never used
[INFO] [stdout]    --> src/bst/avl_tree.rs:328:8
[INFO] [stdout]     |
[INFO] [stdout] 328 | pub fn build_free_from_index_and_values(
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `Command { std: "docker" "inspect" "99db4dd45078f0d3170936a063af67595905c8696fa59ad32af372e4e4cb535d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99db4dd45078f0d3170936a063af67595905c8696fa59ad32af372e4e4cb535d", kill_on_drop: false }`
[INFO] [stdout] 99db4dd45078f0d3170936a063af67595905c8696fa59ad32af372e4e4cb535d
