[INFO] cloning repository https://github.com/sunadase/graph_db
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sunadase/graph_db" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsunadase%2Fgraph_db", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsunadase%2Fgraph_db'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7b62e008680490d5b5f2841f204cc4ec0a7e9b8e
[INFO] checking sunadase/graph_db against try#943e2200e35c3825486c4671b6cab0107a07f8c1 for pr-148952
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsunadase%2Fgraph_db" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/sunadase/graph_db
[INFO] finished tweaking git repo https://github.com/sunadase/graph_db
[INFO] tweaked toml for git repo https://github.com/sunadase/graph_db written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/sunadase/graph_db on toolchain 943e2200e35c3825486c4671b6cab0107a07f8c1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+943e2200e35c3825486c4671b6cab0107a07f8c1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/sunadase/graph_db 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" "+943e2200e35c3825486c4671b6cab0107a07f8c1" "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
[INFO] checking sunadase/graph_db against try#943e2200e35c3825486c4671b6cab0107a07f8c1 for pr-148952
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsunadase%2Fgraph_db" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/sunadase/graph_db
[INFO] finished tweaking git repo https://github.com/sunadase/graph_db
[INFO] tweaked toml for git repo https://github.com/sunadase/graph_db written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/sunadase/graph_db on toolchain 943e2200e35c3825486c4671b6cab0107a07f8c1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+943e2200e35c3825486c4671b6cab0107a07f8c1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/sunadase/graph_db 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" "+943e2200e35c3825486c4671b6cab0107a07f8c1" "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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+943e2200e35c3825486c4671b6cab0107a07f8c1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bb8ddf6d7ad6debfbad925c78b660b9dabddc42a9c4a324d76c2bb393e8cea4c
[INFO] running `Command { std: "docker" "start" "-a" "bb8ddf6d7ad6debfbad925c78b660b9dabddc42a9c4a324d76c2bb393e8cea4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bb8ddf6d7ad6debfbad925c78b660b9dabddc42a9c4a324d76c2bb393e8cea4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb8ddf6d7ad6debfbad925c78b660b9dabddc42a9c4a324d76c2bb393e8cea4c", kill_on_drop: false }`
[INFO] [stdout] bb8ddf6d7ad6debfbad925c78b660b9dabddc42a9c4a324d76c2bb393e8cea4c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+943e2200e35c3825486c4671b6cab0107a07f8c1" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f872e24844e3dc9b47745c3b671e46ad974ee806c7356ddbea771689de0a4288
[INFO] running `Command { std: "docker" "start" "-a" "f872e24844e3dc9b47745c3b671e46ad974ee806c7356ddbea771689de0a4288", kill_on_drop: false }`
[INFO] [stderr]     Checking graph_db v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `BorrowMut` and `iter::zip`
[INFO] [stdout]  --> src/vec_graph.rs:3:22
[INFO] [stdout]   |
[INFO] [stdout] 3 |     borrow::{Borrow, BorrowMut},
[INFO] [stdout]   |                      ^^^^^^^^^
[INFO] [stdout] 4 |     collections::HashMap,
[INFO] [stdout] 5 |     iter::zip,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BorrowMut` and `iter::zip`
[INFO] [stdout]  --> src/vec_graph.rs:3:22
[INFO] [stdout]   |
[INFO] [stdout] 3 |     borrow::{Borrow, BorrowMut},
[INFO] [stdout]   |                      ^^^^^^^^^
[INFO] [stdout] 4 |     collections::HashMap,
[INFO] [stdout] 5 |     iter::zip,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/vec_graph.rs:141:9
[INFO] [stdout]     |
[INFO] [stdout] 141 |         mut new_idx: NodeIndex,
[INFO] [stdout]     |         ----^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/vec_graph.rs:151:43
[INFO] [stdout]     |
[INFO] [stdout] 151 |     fn retain_at<F>(&mut self, key: &str, mut f: F) -> Option<()>
[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/vec_graph.rs:141:9
[INFO] [stdout]     |
[INFO] [stdout] 141 |         mut new_idx: NodeIndex,
[INFO] [stdout]     |         ----^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/vec_graph.rs:151:43
[INFO] [stdout]     |
[INFO] [stdout] 151 |     fn retain_at<F>(&mut self, key: &str, mut f: F) -> Option<()>
[INFO] [stdout]     |                                           ----^
[INFO] [stdout]     |                                           |
[INFO] [stdout]     |                                           help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `remove_all` and `retain_at` are never used
[INFO] [stdout]    --> src/vec_graph.rs:129:8
[INFO] [stdout]     |
[INFO] [stdout] 113 | impl AliasMap {
[INFO] [stdout]     | ------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 129 |     fn remove_all(&mut self, key: &str) -> Option<Vec<NodeIndex>> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 151 |     fn retain_at<F>(&mut self, key: &str, mut f: F) -> Option<()>
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `remove_all` and `retain_at` are never used
[INFO] [stdout]    --> src/vec_graph.rs:129:8
[INFO] [stdout]     |
[INFO] [stdout] 113 | impl AliasMap {
[INFO] [stdout]     | ------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 129 |     fn remove_all(&mut self, key: &str) -> Option<Vec<NodeIndex>> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 151 |     fn retain_at<F>(&mut self, key: &str, mut f: F) -> Option<()>
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BorrowMut` and `iter::zip`
[INFO] [stdout]  --> src/vec_graph.rs:3:22
[INFO] [stdout]   |
[INFO] [stdout] 3 |     borrow::{Borrow, BorrowMut},
[INFO] [stdout]   |                      ^^^^^^^^^
[INFO] [stdout] 4 |     collections::HashMap,
[INFO] [stdout] 5 |     iter::zip,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> tests/vec_graph_tests.rs:82:5
[INFO] [stdout]    |
[INFO] [stdout] 82 |     ///equality derived -> Checks if all fields of all structs are equal
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macro invocations
[INFO] [stdout]    |
[INFO] [stdout]    = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BorrowMut` and `iter::zip`
[INFO] [stdout]  --> src/vec_graph.rs:3:22
[INFO] [stdout]   |
[INFO] [stdout] 3 |     borrow::{Borrow, BorrowMut},
[INFO] [stdout]   |                      ^^^^^^^^^
[INFO] [stdout] 4 |     collections::HashMap,
[INFO] [stdout] 5 |     iter::zip,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> tests/vec_graph_tests.rs:97:9
[INFO] [stdout]    |
[INFO] [stdout] 97 |     let mut graph2 = Graph::new();
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `graph2`
[INFO] [stdout]   --> tests/vec_graph_tests.rs:97:9
[INFO] [stdout]    |
[INFO] [stdout] 97 |     let mut graph2 = Graph::new();
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_graph2`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/vec_graph.rs:141:9
[INFO] [stdout]     |
[INFO] [stdout] 141 |         mut new_idx: NodeIndex,
[INFO] [stdout]     |         ----^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/vec_graph.rs:151:43
[INFO] [stdout]     |
[INFO] [stdout] 151 |     fn retain_at<F>(&mut self, key: &str, mut f: F) -> Option<()>
[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/vec_graph.rs:141:9
[INFO] [stdout]     |
[INFO] [stdout] 141 |         mut new_idx: NodeIndex,
[INFO] [stdout]     |         ----^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/vec_graph.rs:151:43
[INFO] [stdout]     |
[INFO] [stdout] 151 |     fn retain_at<F>(&mut self, key: &str, mut f: F) -> Option<()>
[INFO] [stdout]     |                                           ----^
[INFO] [stdout]     |                                           |
[INFO] [stdout]     |                                           help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Link` is never used
[INFO] [stdout]  --> src/unsafe_graph.rs:3:6
[INFO] [stdout]   |
[INFO] [stdout] 3 | type Link = *mut Node;
[INFO] [stdout]   |      ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]  --> src/unsafe_graph.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Node {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Edge` is never constructed
[INFO] [stdout]   --> src/unsafe_graph.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct Edge {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Graph` is never constructed
[INFO] [stdout]   --> src/unsafe_graph.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | struct Graph {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `remove_all` and `retain_at` are never used
[INFO] [stdout]    --> src/vec_graph.rs:129:8
[INFO] [stdout]     |
[INFO] [stdout] 113 | impl AliasMap {
[INFO] [stdout]     | ------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 129 |     fn remove_all(&mut self, key: &str) -> Option<Vec<NodeIndex>> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 151 |     fn retain_at<F>(&mut self, key: &str, mut f: F) -> Option<()>
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NodeIndex` is never constructed
[INFO] [stdout]  --> src/vgraph.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct NodeIndex(usize);
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> src/vgraph.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | impl NodeIndex {
[INFO] [stdout]   | -------------- associated function in this implementation
[INFO] [stdout] 5 |     fn new(index: usize) -> Self {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Link` is never constructed
[INFO] [stdout]   --> src/vgraph.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct Link {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/vgraph.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl Link {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] 20 |     fn new(relation: &str, to: NodeIndex) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]   --> src/vgraph.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | struct Node {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]   --> src/vgraph.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | impl Node {
[INFO] [stdout]    | --------- associated items in this implementation
[INFO] [stdout] 35 |     fn new(alias: String) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 43 |     fn add_label(&mut self, label: &str) -> &mut Self {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 47 |     fn remove_label(&mut self, label: &str) -> &mut Self {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 51 |     fn add_prop(&mut self, key: &str, val: &str) -> &mut Self {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 55 |     fn remove_prop(&mut self, key: &str) -> &mut Self {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 59 |     fn add_relation(&mut self, relation: &str, to: NodeIndex) -> &mut Self {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 63 |     fn remove_relation(&mut self, relation: &str) -> &mut Self {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Graph` is never constructed
[INFO] [stdout]   --> src/vgraph.rs:69:8
[INFO] [stdout]    |
[INFO] [stdout] 69 | struct Graph {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `add_node`, `remove_node`, `get_node_mut`, `get_node`, and `mut_node` are never used
[INFO] [stdout]    --> src/vgraph.rs:75:8
[INFO] [stdout]     |
[INFO] [stdout]  74 | impl Graph {
[INFO] [stdout]     | ---------- associated items in this implementation
[INFO] [stdout]  75 |     fn new() -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout]  82 |     fn add_node(&mut self, alias: &str) -> &mut Self {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  92 |     fn remove_node(&mut self, alias: &str) -> &mut Self {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 101 |     fn get_node_mut(&mut self, alias: &str) -> &mut Node {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 106 |     fn get_node(&self, alias: &str) -> &Node {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 109 |     fn mut_node<F>(&mut self, alias: &str, mut f: F) -> &mut Graph
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Link` is never used
[INFO] [stdout]  --> src/unsafe_graph.rs:3:6
[INFO] [stdout]   |
[INFO] [stdout] 3 | type Link = *mut Node;
[INFO] [stdout]   |      ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]  --> src/unsafe_graph.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Node {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Edge` is never constructed
[INFO] [stdout]   --> src/unsafe_graph.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct Edge {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Graph` is never constructed
[INFO] [stdout]   --> src/unsafe_graph.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | struct Graph {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `remove_all` and `retain_at` are never used
[INFO] [stdout]    --> src/vec_graph.rs:129:8
[INFO] [stdout]     |
[INFO] [stdout] 113 | impl AliasMap {
[INFO] [stdout]     | ------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 129 |     fn remove_all(&mut self, key: &str) -> Option<Vec<NodeIndex>> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 151 |     fn retain_at<F>(&mut self, key: &str, mut f: F) -> Option<()>
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NodeIndex` is never constructed
[INFO] [stdout]  --> src/vgraph.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct NodeIndex(usize);
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> src/vgraph.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | impl NodeIndex {
[INFO] [stdout]   | -------------- associated function in this implementation
[INFO] [stdout] 5 |     fn new(index: usize) -> Self {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Link` is never constructed
[INFO] [stdout]   --> src/vgraph.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct Link {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/vgraph.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl Link {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] 20 |     fn new(relation: &str, to: NodeIndex) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]   --> src/vgraph.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | struct Node {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]   --> src/vgraph.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | impl Node {
[INFO] [stdout]    | --------- associated items in this implementation
[INFO] [stdout] 35 |     fn new(alias: String) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 43 |     fn add_label(&mut self, label: &str) -> &mut Self {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 47 |     fn remove_label(&mut self, label: &str) -> &mut Self {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 51 |     fn add_prop(&mut self, key: &str, val: &str) -> &mut Self {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 55 |     fn remove_prop(&mut self, key: &str) -> &mut Self {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 59 |     fn add_relation(&mut self, relation: &str, to: NodeIndex) -> &mut Self {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 63 |     fn remove_relation(&mut self, relation: &str) -> &mut Self {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Graph` is never constructed
[INFO] [stdout]   --> src/vgraph.rs:69:8
[INFO] [stdout]    |
[INFO] [stdout] 69 | struct Graph {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `add_node`, `remove_node`, `get_node_mut`, `get_node`, and `mut_node` are never used
[INFO] [stdout]    --> src/vgraph.rs:75:8
[INFO] [stdout]     |
[INFO] [stdout]  74 | impl Graph {
[INFO] [stdout]     | ---------- associated items in this implementation
[INFO] [stdout]  75 |     fn new() -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout]  82 |     fn add_node(&mut self, alias: &str) -> &mut Self {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  92 |     fn remove_node(&mut self, alias: &str) -> &mut Self {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 101 |     fn get_node_mut(&mut self, alias: &str) -> &mut Node {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 106 |     fn get_node(&self, alias: &str) -> &Node {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 109 |     fn mut_node<F>(&mut self, alias: &str, mut f: F) -> &mut Graph
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `Command { std: "docker" "inspect" "f872e24844e3dc9b47745c3b671e46ad974ee806c7356ddbea771689de0a4288", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f872e24844e3dc9b47745c3b671e46ad974ee806c7356ddbea771689de0a4288", kill_on_drop: false }`
[INFO] [stdout] f872e24844e3dc9b47745c3b671e46ad974ee806c7356ddbea771689de0a4288
