[INFO] cloning repository https://github.com/HenrikBrokkoli/HenriksParsingProject [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/HenrikBrokkoli/HenriksParsingProject" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHenrikBrokkoli%2FHenriksParsingProject", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHenrikBrokkoli%2FHenriksParsingProject'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] b809af58ce1163dd55bd611eb8a04a9f578ae10c [INFO] checking HenrikBrokkoli/HenriksParsingProject/b809af58ce1163dd55bd611eb8a04a9f578ae10c against master#e9182f195b8505c87c4bd055b9f6e114ccda0981 for pr-144098 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHenrikBrokkoli%2FHenriksParsingProject" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/HenrikBrokkoli/HenriksParsingProject [INFO] finished tweaking git repo https://github.com/HenrikBrokkoli/HenriksParsingProject [INFO] tweaked toml for git repo https://github.com/HenrikBrokkoli/HenriksParsingProject written to /workspace/builds/worker-3-tc1/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/HenrikBrokkoli/HenriksParsingProject on toolchain e9182f195b8505c87c4bd055b9f6e114ccda0981 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e9182f195b8505c87c4bd055b9f6e114ccda0981" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/HenrikBrokkoli/HenriksParsingProject 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" "+e9182f195b8505c87c4bd055b9f6e114ccda0981" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+e9182f195b8505c87c4bd055b9f6e114ccda0981" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 5372313ba3dfe282001e0e1d8543b6075e523c5c457874ca9f082c3002a1314d [INFO] running `Command { std: "docker" "start" "-a" "5372313ba3dfe282001e0e1d8543b6075e523c5c457874ca9f082c3002a1314d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "5372313ba3dfe282001e0e1d8543b6075e523c5c457874ca9f082c3002a1314d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5372313ba3dfe282001e0e1d8543b6075e523c5c457874ca9f082c3002a1314d", kill_on_drop: false }` [INFO] [stdout] 5372313ba3dfe282001e0e1d8543b6075e523c5c457874ca9f082c3002a1314d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+e9182f195b8505c87c4bd055b9f6e114ccda0981" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] df74a76fe71cdf5f4eb14881f4274634109c6f129bf24f202da7bf107b6f9974 [INFO] running `Command { std: "docker" "start" "-a" "df74a76fe71cdf5f4eb14881f4274634109c6f129bf24f202da7bf107b6f9974", kill_on_drop: false }` [INFO] [stderr] Checking HenriksParsingProject v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `Node` [INFO] [stdout] --> src/vms/counting_vm.rs:3:19 [INFO] [stdout] | [INFO] [stdout] 3 | use crate::tree::{Node, NodeId, Tree}; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Node` [INFO] [stdout] --> src/vms/simple_stack_vm.rs:3:19 [INFO] [stdout] | [INFO] [stdout] 3 | use crate::tree::{Node, NodeId, Tree}; [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `crate::simple_graph::NodeIndex` [INFO] [stdout] --> src/tree.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use crate::simple_graph::NodeIndex; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Node` [INFO] [stdout] --> src/vms/counting_vm.rs:3:19 [INFO] [stdout] | [INFO] [stdout] 3 | use crate::tree::{Node, NodeId, Tree}; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Node` [INFO] [stdout] --> src/vms/simple_stack_vm.rs:3:19 [INFO] [stdout] | [INFO] [stdout] 3 | use crate::tree::{Node, NodeId, Tree}; [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `crate::simple_graph::NodeIndex` [INFO] [stdout] --> src/tree.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use crate::simple_graph::NodeIndex; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `discard` is never read [INFO] [stdout] --> src/script_parser.rs:26:5 [INFO] [stdout] | [INFO] [stdout] 21 | pub struct Parser<'a, T:> [INFO] [stdout] | ------ field in this struct [INFO] [stdout] ... [INFO] [stdout] 26 | discard: Option, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: crate `HenriksParsingProject` should have a snake case name [INFO] [stdout] | [INFO] [stdout] = help: convert the identifier to snake case: `henriks_parsing_project` [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing [INFO] [stdout] --> src/simple_graph.rs:120:23 [INFO] [stdout] | [INFO] [stdout] 120 | pub fn successors(&self, source: NodeIndex) -> Successors { [INFO] [stdout] | ^^^^^ ------------- the lifetime gets resolved as `'_` [INFO] [stdout] | | [INFO] [stdout] | this lifetime flows to the output [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths [INFO] [stdout] | [INFO] [stdout] 120 | pub fn successors(&self, source: NodeIndex) -> Successors<'_, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing [INFO] [stdout] --> src/simple_graph.rs:125:28 [INFO] [stdout] | [INFO] [stdout] 125 | pub fn connected_edges(&self, source: NodeIndex) -> ConnectedEdges { [INFO] [stdout] | ^^^^^ ----------------- the lifetime gets resolved as `'_` [INFO] [stdout] | | [INFO] [stdout] | this lifetime flows to the output [INFO] [stdout] | [INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths [INFO] [stdout] | [INFO] [stdout] 125 | pub fn connected_edges(&self, source: NodeIndex) -> ConnectedEdges<'_, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing [INFO] [stdout] --> src/named_graph.rs:82:30 [INFO] [stdout] | [INFO] [stdout] 82 | pub fn successor_indices(&self, node_name: ElementIndex) -> Result,GrammarError> { [INFO] [stdout] | ^^^^^ this lifetime flows to the output -------------- the lifetime gets resolved as `'_` [INFO] [stdout] | [INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths [INFO] [stdout] | [INFO] [stdout] 82 | pub fn successor_indices(&self, node_name: ElementIndex) -> Result,GrammarError> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing [INFO] [stdout] --> src/named_graph.rs:87:23 [INFO] [stdout] | [INFO] [stdout] 87 | pub fn successors(&self, node_name: ElementIndex) -> Result,GrammarError> { [INFO] [stdout] | ^^^^^ this lifetime flows to the output ------------------ the lifetime gets resolved as `'_` [INFO] [stdout] | [INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths [INFO] [stdout] | [INFO] [stdout] 87 | pub fn successors(&self, node_name: ElementIndex) -> Result,GrammarError> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing [INFO] [stdout] --> src/peekables.rs:65:26 [INFO] [stdout] | [INFO] [stdout] 65 | pub fn new(peekable: &mut T, stop_on:Option,escape_char:Option) -> ParseProcess< T> { [INFO] [stdout] | ^^^^^^ this lifetime flows to the output ---------------- the lifetime gets resolved as `'_` [INFO] [stdout] | [INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths [INFO] [stdout] | [INFO] [stdout] 65 | pub fn new(peekable: &mut T, stop_on:Option,escape_char:Option) -> ParseProcess<'_, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing [INFO] [stdout] --> src/peekables.rs:69:33 [INFO] [stdout] | [INFO] [stdout] 69 | pub fn new_nested(peekable: &mut T, stop_on:Option,escape_char:Option, global_position:usize) -> ParseProcess< T> { [INFO] [stdout] | ^^^^^^ this lifetime flows to the output ---------------- the lifetime gets resolved as `'_` [INFO] [stdout] | [INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths [INFO] [stdout] | [INFO] [stdout] 69 | pub fn new_nested(peekable: &mut T, stop_on:Option,escape_char:Option, global_position:usize) -> ParseProcess<'_, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `graph` [INFO] [stdout] --> src/main.rs:22:9 [INFO] [stdout] | [INFO] [stdout] 22 | let graph = parser.parse(&script,&mut state).unwrap(); [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_graph` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:18:9 [INFO] [stdout] | [INFO] [stdout] 18 | let mut vm=NullVm::new(); [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: unused variable: `graph` [INFO] [stdout] --> src/main.rs:22:9 [INFO] [stdout] | [INFO] [stdout] 22 | let graph = parser.parse(&script,&mut state).unwrap(); [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_graph` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:18:9 [INFO] [stdout] | [INFO] [stdout] 18 | let mut vm=NullVm::new(); [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: unused variable: `node` [INFO] [stdout] --> src/tree.rs:337:13 [INFO] [stdout] | [INFO] [stdout] 337 | let node =tree.add_node("test", None).unwrap(); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_node` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `discard` is never read [INFO] [stdout] --> src/script_parser.rs:26:5 [INFO] [stdout] | [INFO] [stdout] 21 | pub struct Parser<'a, T:> [INFO] [stdout] | ------ field in this struct [INFO] [stdout] ... [INFO] [stdout] 26 | discard: Option, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing [INFO] [stdout] --> src/simple_graph.rs:120:23 [INFO] [stdout] | [INFO] [stdout] 120 | pub fn successors(&self, source: NodeIndex) -> Successors { [INFO] [stdout] | ^^^^^ ------------- the lifetime gets resolved as `'_` [INFO] [stdout] | | [INFO] [stdout] | this lifetime flows to the output [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths [INFO] [stdout] | [INFO] [stdout] 120 | pub fn successors(&self, source: NodeIndex) -> Successors<'_, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing [INFO] [stdout] --> src/simple_graph.rs:125:28 [INFO] [stdout] | [INFO] [stdout] 125 | pub fn connected_edges(&self, source: NodeIndex) -> ConnectedEdges { [INFO] [stdout] | ^^^^^ ----------------- the lifetime gets resolved as `'_` [INFO] [stdout] | | [INFO] [stdout] | this lifetime flows to the output [INFO] [stdout] | [INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths [INFO] [stdout] | [INFO] [stdout] 125 | pub fn connected_edges(&self, source: NodeIndex) -> ConnectedEdges<'_, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing [INFO] [stdout] --> src/named_graph.rs:82:30 [INFO] [stdout] | [INFO] [stdout] 82 | pub fn successor_indices(&self, node_name: ElementIndex) -> Result,GrammarError> { [INFO] [stdout] | ^^^^^ this lifetime flows to the output -------------- the lifetime gets resolved as `'_` [INFO] [stdout] | [INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths [INFO] [stdout] | [INFO] [stdout] 82 | pub fn successor_indices(&self, node_name: ElementIndex) -> Result,GrammarError> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing [INFO] [stdout] --> src/named_graph.rs:87:23 [INFO] [stdout] | [INFO] [stdout] 87 | pub fn successors(&self, node_name: ElementIndex) -> Result,GrammarError> { [INFO] [stdout] | ^^^^^ this lifetime flows to the output ------------------ the lifetime gets resolved as `'_` [INFO] [stdout] | [INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths [INFO] [stdout] | [INFO] [stdout] 87 | pub fn successors(&self, node_name: ElementIndex) -> Result,GrammarError> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `must_use` that must be used [INFO] [stdout] --> src/rule_parsing.rs:1150:9 [INFO] [stdout] | [INFO] [stdout] 1150 | format!("The origin is: {rules:?}"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 1150 | let _ = format!("The origin is: {rules:?}"); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing [INFO] [stdout] --> src/peekables.rs:65:26 [INFO] [stdout] | [INFO] [stdout] 65 | pub fn new(peekable: &mut T, stop_on:Option,escape_char:Option) -> ParseProcess< T> { [INFO] [stdout] | ^^^^^^ this lifetime flows to the output ---------------- the lifetime gets resolved as `'_` [INFO] [stdout] | [INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths [INFO] [stdout] | [INFO] [stdout] 65 | pub fn new(peekable: &mut T, stop_on:Option,escape_char:Option) -> ParseProcess<'_, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing [INFO] [stdout] --> src/peekables.rs:69:33 [INFO] [stdout] | [INFO] [stdout] 69 | pub fn new_nested(peekable: &mut T, stop_on:Option,escape_char:Option, global_position:usize) -> ParseProcess< T> { [INFO] [stdout] | ^^^^^^ this lifetime flows to the output ---------------- the lifetime gets resolved as `'_` [INFO] [stdout] | [INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths [INFO] [stdout] | [INFO] [stdout] 69 | pub fn new_nested(peekable: &mut T, stop_on:Option,escape_char:Option, global_position:usize) -> ParseProcess<'_, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/tree.rs:315:9 [INFO] [stdout] | [INFO] [stdout] 315 | tree.remove_branch(node); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 315 | let _ = tree.remove_branch(node); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/tree.rs:325:9 [INFO] [stdout] | [INFO] [stdout] 325 | tree.remove_branch(node); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 325 | let _ = tree.remove_branch(node); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/tree.rs:336:9 [INFO] [stdout] | [INFO] [stdout] 336 | tree.remove_branch(node_deleted); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 336 | let _ = tree.remove_branch(node_deleted); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.02s [INFO] running `Command { std: "docker" "inspect" "df74a76fe71cdf5f4eb14881f4274634109c6f129bf24f202da7bf107b6f9974", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "df74a76fe71cdf5f4eb14881f4274634109c6f129bf24f202da7bf107b6f9974", kill_on_drop: false }` [INFO] [stdout] df74a76fe71cdf5f4eb14881f4274634109c6f129bf24f202da7bf107b6f9974