[INFO] cloning repository https://github.com/sgasse/rust_graph
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sgasse/rust_graph" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsgasse%2Frust_graph", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsgasse%2Frust_graph'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c8113a62db0f1d945f6d7c418c50835611e7b753
[INFO] checking sgasse/rust_graph against master#f5f33ec0e0455eefa72fc5567eb1280a4d5ee206 for pr-83312
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsgasse%2Frust_graph" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sgasse/rust_graph on toolchain f5f33ec0e0455eefa72fc5567eb1280a4d5ee206
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f5f33ec0e0455eefa72fc5567eb1280a4d5ee206" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sgasse/rust_graph
[INFO] finished tweaking git repo https://github.com/sgasse/rust_graph
[INFO] tweaked toml for git repo https://github.com/sgasse/rust_graph written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/sgasse/rust_graph already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f5f33ec0e0455eefa72fc5567eb1280a4d5ee206" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+f5f33ec0e0455eefa72fc5567eb1280a4d5ee206" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 600f6ee4b8ca28b2ed70e813fd2c703c25d30109993ac1b5d5da4fb7419477e2
[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" "600f6ee4b8ca28b2ed70e813fd2c703c25d30109993ac1b5d5da4fb7419477e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "600f6ee4b8ca28b2ed70e813fd2c703c25d30109993ac1b5d5da4fb7419477e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "600f6ee4b8ca28b2ed70e813fd2c703c25d30109993ac1b5d5da4fb7419477e2", kill_on_drop: false }`
[INFO] [stdout] 600f6ee4b8ca28b2ed70e813fd2c703c25d30109993ac1b5d5da4fb7419477e2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+f5f33ec0e0455eefa72fc5567eb1280a4d5ee206" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0de49efb02b6d2b435df873335306d87774117e0ebf3a763c3e3cc66028f828e
[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" "0de49efb02b6d2b435df873335306d87774117e0ebf3a763c3e3cc66028f828e", kill_on_drop: false }`
[INFO] [stderr]     Checking graph_algos v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::trees::common::NodeData`
[INFO] [stdout]  --> src/trees/linked_tree.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::trees::common::NodeData;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::trees::common::NodeData`
[INFO] [stdout]  --> src/trees/linked_tree.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::trees::common::NodeData;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/trees/linked_tree.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn new<'a>(data: T) -> Node<'a, T> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `add_child_to_parent`
[INFO] [stdout]   --> src/trees/linked_tree.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn add_child_to_parent<'b, T>(parent: &'b Node<'b, T>, child: &'b Node<'b, T>) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `LuTree`
[INFO] [stdout]  --> src/trees/lu_tree.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct LuTree<T> {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_node`
[INFO] [stdout]  --> src/trees/lu_tree.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub fn add_node(&mut self, parent: Option<usize>, data: T) -> Result<usize, ()> {
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/trees/named_lu_tree.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn new() -> NamedLuTree {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_file`
[INFO] [stdout]   --> src/trees/named_lu_tree.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn from_file(filename: &str) -> NamedLuTree {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_with_children_r`
[INFO] [stdout]   --> src/trees/named_lu_tree.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn add_with_children_r(&mut self, name: &str, children: Vec<&str>) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dfs`
[INFO] [stdout]   --> src/trees/named_lu_tree.rs:45:12
[INFO] [stdout]    |
[INFO] [stdout] 45 |     pub fn dfs(&self, start: String) -> Result<Vec<String>, &str> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `bfs`
[INFO] [stdout]   --> src/trees/named_lu_tree.rs:51:12
[INFO] [stdout]    |
[INFO] [stdout] 51 |     pub fn bfs(&self, start: String) -> Result<Vec<String>, &str> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_line`
[INFO] [stdout]   --> src/trees/named_lu_tree.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 57 |     fn parse_line(line: &str) -> (String, Vec<String>) {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_with_children`
[INFO] [stdout]   --> src/trees/named_lu_tree.rs:64:12
[INFO] [stdout]    |
[INFO] [stdout] 64 |     pub fn add_with_children(&mut self, name: String, children: Vec<String>) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_to_parent`
[INFO] [stdout]   --> src/trees/named_lu_tree.rs:83:12
[INFO] [stdout]    |
[INFO] [stdout] 83 |     pub fn add_to_parent(&mut self, child: String, parent: String) -> Result<usize, &str> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `traverse`
[INFO] [stdout]    --> src/trees/named_lu_tree.rs:108:12
[INFO] [stdout]     |
[INFO] [stdout] 108 |     pub fn traverse(&self, start: String, buffer: &mut dyn SearchBuffer<usize>) -> Result<Vec<String>, &str> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `LuTree`
[INFO] [stdout]  --> src/trees/lu_tree.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct LuTree<T> {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_node`
[INFO] [stdout]  --> src/trees/lu_tree.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub fn add_node(&mut self, parent: Option<usize>, data: T) -> Result<usize, ()> {
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_file`
[INFO] [stdout]   --> src/trees/named_lu_tree.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn from_file(filename: &str) -> NamedLuTree {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dfs`
[INFO] [stdout]   --> src/trees/named_lu_tree.rs:45:12
[INFO] [stdout]    |
[INFO] [stdout] 45 |     pub fn dfs(&self, start: String) -> Result<Vec<String>, &str> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `bfs`
[INFO] [stdout]   --> src/trees/named_lu_tree.rs:51:12
[INFO] [stdout]    |
[INFO] [stdout] 51 |     pub fn bfs(&self, start: String) -> Result<Vec<String>, &str> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `traverse`
[INFO] [stdout]    --> src/trees/named_lu_tree.rs:108:12
[INFO] [stdout]     |
[INFO] [stdout] 108 |     pub fn traverse(&self, start: String, buffer: &mut dyn SearchBuffer<usize>) -> Result<Vec<String>, &str> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::trees::common::NodeData`
[INFO] [stdout]  --> src/trees/linked_tree.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::trees::common::NodeData;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::trees::common::NodeData`
[INFO] [stdout]  --> src/trees/linked_tree.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::trees::common::NodeData;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/trees/linked_tree.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn new<'a>(data: T) -> Node<'a, T> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `add_child_to_parent`
[INFO] [stdout]   --> src/trees/linked_tree.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn add_child_to_parent<'b, T>(parent: &'b Node<'b, T>, child: &'b Node<'b, T>) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `LuTree`
[INFO] [stdout]  --> src/trees/lu_tree.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct LuTree<T> {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_node`
[INFO] [stdout]  --> src/trees/lu_tree.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub fn add_node(&mut self, parent: Option<usize>, data: T) -> Result<usize, ()> {
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `LuTree`
[INFO] [stdout]  --> src/trees/lu_tree.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct LuTree<T> {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_node`
[INFO] [stdout]  --> src/trees/lu_tree.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub fn add_node(&mut self, parent: Option<usize>, data: T) -> Result<usize, ()> {
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.30s
[INFO] running `Command { std: "docker" "inspect" "0de49efb02b6d2b435df873335306d87774117e0ebf3a763c3e3cc66028f828e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0de49efb02b6d2b435df873335306d87774117e0ebf3a763c3e3cc66028f828e", kill_on_drop: false }`
[INFO] [stdout] 0de49efb02b6d2b435df873335306d87774117e0ebf3a763c3e3cc66028f828e