[INFO] cloning repository https://github.com/Bezeerra/rust_lib_data_struct
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Bezeerra/rust_lib_data_struct" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBezeerra%2Frust_lib_data_struct", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBezeerra%2Frust_lib_data_struct'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fe1334b5bdcc79e343c92f2bdecb0069d59c2170
[INFO] checking Bezeerra/rust_lib_data_struct against master#a26e97be8826d408309fffbd8168362365719f50 for pr-136776
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBezeerra%2Frust_lib_data_struct" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Bezeerra/rust_lib_data_struct on toolchain a26e97be8826d408309fffbd8168362365719f50
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a26e97be8826d408309fffbd8168362365719f50" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Bezeerra/rust_lib_data_struct
[INFO] finished tweaking git repo https://github.com/Bezeerra/rust_lib_data_struct
[INFO] tweaked toml for git repo https://github.com/Bezeerra/rust_lib_data_struct written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Bezeerra/rust_lib_data_struct 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" "+a26e97be8826d408309fffbd8168362365719f50" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+a26e97be8826d408309fffbd8168362365719f50" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 14b2da99b14aaf341196d6505e58f4538c373de7cc92de7a6165d7bf87393399
[INFO] running `Command { std: "docker" "start" "-a" "14b2da99b14aaf341196d6505e58f4538c373de7cc92de7a6165d7bf87393399", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "14b2da99b14aaf341196d6505e58f4538c373de7cc92de7a6165d7bf87393399", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14b2da99b14aaf341196d6505e58f4538c373de7cc92de7a6165d7bf87393399", kill_on_drop: false }`
[INFO] [stdout] 14b2da99b14aaf341196d6505e58f4538c373de7cc92de7a6165d7bf87393399
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+a26e97be8826d408309fffbd8168362365719f50" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 76ffbdf32a5790a36291a3aa663b0aa8b65e4435e445a1346f06699aea0b58a4
[INFO] running `Command { std: "docker" "start" "-a" "76ffbdf32a5790a36291a3aa663b0aa8b65e4435e445a1346f06699aea0b58a4", kill_on_drop: false }`
[INFO] [stderr]     Checking grafos v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `BufReader` and `self`
[INFO] [stdout]  --> src/main.rs:4:15
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{self, BufRead, BufReader, Read, Write};
[INFO] [stdout]   |               ^^^^           ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufReader` and `self`
[INFO] [stdout]  --> src/main.rs:4:15
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{self, BufRead, BufReader, Read, Write};
[INFO] [stdout]   |               ^^^^           ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BufRead`
[INFO] [stdout]  --> src/main.rs:4:21
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{self, BufRead, BufReader, Read, Write};
[INFO] [stdout]   |                     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/main.rs:8:13
[INFO] [stdout]   |
[INFO] [stdout] 8 |         let mut file = File::open(current_dir.join(path_dynamic));
[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: `value`
[INFO] [stdout]    --> src/main.rs:144:21
[INFO] [stdout]     |
[INFO] [stdout] 144 |                 for value in hash_set.iter() {
[INFO] [stdout]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[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:136:9
[INFO] [stdout]     |
[INFO] [stdout] 136 |     let mut number_of_edges = graph.keys().len();
[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/main.rs:140:13
[INFO] [stdout]     |
[INFO] [stdout] 140 |         let mut clone_graph = graph.clone();
[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/main.rs:169:9
[INFO] [stdout]     |
[INFO] [stdout] 169 |     let mut edges = load_graph_vector("src/exemplo.txt");
[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/main.rs:170:9
[INFO] [stdout]     |
[INFO] [stdout] 170 |     let mut graph = Graph::new(edges);
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `dfs`, `bfs`, and `eh_conexo` are never used
[INFO] [stdout]    --> src/main.rs:77:8
[INFO] [stdout]     |
[INFO] [stdout] 27  | impl Graph {
[INFO] [stdout]     | ---------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 77  |     fn dfs(&mut self, start_node: i32) {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 99  |     fn bfs(&mut self, start_node: i32) {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 119 |     fn eh_conexo(graph: Vec<Vec<i32>>) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `graph_information` is never used
[INFO] [stdout]    --> src/main.rs:135:4
[INFO] [stdout]     |
[INFO] [stdout] 135 | fn graph_information(graph: HashMap<i32, HashSet<i32>>) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BufRead`
[INFO] [stdout]  --> src/main.rs:4:21
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{self, BufRead, BufReader, Read, Write};
[INFO] [stdout]   |                     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/main.rs:8:13
[INFO] [stdout]   |
[INFO] [stdout] 8 |         let mut file = File::open(current_dir.join(path_dynamic));
[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: `value`
[INFO] [stdout]    --> src/main.rs:144:21
[INFO] [stdout]     |
[INFO] [stdout] 144 |                 for value in hash_set.iter() {
[INFO] [stdout]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[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:136:9
[INFO] [stdout]     |
[INFO] [stdout] 136 |     let mut number_of_edges = graph.keys().len();
[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/main.rs:140:13
[INFO] [stdout]     |
[INFO] [stdout] 140 |         let mut clone_graph = graph.clone();
[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/main.rs:169:9
[INFO] [stdout]     |
[INFO] [stdout] 169 |     let mut edges = load_graph_vector("src/exemplo.txt");
[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/main.rs:170:9
[INFO] [stdout]     |
[INFO] [stdout] 170 |     let mut graph = Graph::new(edges);
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `dfs`, `bfs`, and `eh_conexo` are never used
[INFO] [stdout]    --> src/main.rs:77:8
[INFO] [stdout]     |
[INFO] [stdout] 27  | impl Graph {
[INFO] [stdout]     | ---------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 77  |     fn dfs(&mut self, start_node: i32) {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 99  |     fn bfs(&mut self, start_node: i32) {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 119 |     fn eh_conexo(graph: Vec<Vec<i32>>) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `graph_information` is never used
[INFO] [stdout]    --> src/main.rs:135:4
[INFO] [stdout]     |
[INFO] [stdout] 135 | fn graph_information(graph: HashMap<i32, HashSet<i32>>) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.18s
[INFO] running `Command { std: "docker" "inspect" "76ffbdf32a5790a36291a3aa663b0aa8b65e4435e445a1346f06699aea0b58a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76ffbdf32a5790a36291a3aa663b0aa8b65e4435e445a1346f06699aea0b58a4", kill_on_drop: false }`
[INFO] [stdout] 76ffbdf32a5790a36291a3aa663b0aa8b65e4435e445a1346f06699aea0b58a4
