[INFO] cloning repository https://github.com/dopeter/rust_sample
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dopeter/rust_sample" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdopeter%2Frust_sample", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdopeter%2Frust_sample'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9f7d4afe11818870d0599e96a0e6cc5a21af6283
[INFO] checking dopeter/rust_sample against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdopeter%2Frust_sample" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dopeter/rust_sample on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dopeter/rust_sample
[INFO] finished tweaking git repo https://github.com/dopeter/rust_sample
[INFO] tweaked toml for git repo https://github.com/dopeter/rust_sample written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/dopeter/rust_sample already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c753fea53fa5f15f12bdbd7f23048ff72dbc01957067f94da4a2aa4eae72e598
[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" "c753fea53fa5f15f12bdbd7f23048ff72dbc01957067f94da4a2aa4eae72e598", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c753fea53fa5f15f12bdbd7f23048ff72dbc01957067f94da4a2aa4eae72e598", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c753fea53fa5f15f12bdbd7f23048ff72dbc01957067f94da4a2aa4eae72e598", kill_on_drop: false }`
[INFO] [stdout] c753fea53fa5f15f12bdbd7f23048ff72dbc01957067f94da4a2aa4eae72e598
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6e295fc83b7ba3fdb72d7e3babf88a58a640c39ce9457b99c98acfa50903c8a4
[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" "6e295fc83b7ba3fdb72d7e3babf88a58a640c39ce9457b99c98acfa50903c8a4", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.60
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking hello_world_rust v0.1.0 (/tmp/fixit)
[INFO] [stderr]    Migrating src/main.rs from 2018 edition to 2021
[INFO] [stderr]        Fixed src/main.rs (6 fixes)
[INFO] [stdout] warning: function is never used: `test_open_file`
[INFO] [stdout]   --> src/main.rs:66:4
[INFO] [stdout]    |
[INFO] [stdout] 66 | fn test_open_file(filename: &str) -> Result<i32, Box<dyn Error>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_username_from_file`
[INFO] [stdout]   --> src/main.rs:79:4
[INFO] [stdout]    |
[INFO] [stdout] 79 | fn read_username_from_file() -> Result<String, Box<dyn Error>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `nodeId` should have a snake case name
[INFO] [stdout]  --> src/algorithms/data_structure/simply_graph.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     nodeId: usize,
[INFO] [stdout]   |     ^^^^^^ help: convert the identifier to snake case: `node_id`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `nodeName` should have a snake case name
[INFO] [stdout]  --> src/algorithms/data_structure/simply_graph.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     nodeName: String,
[INFO] [stdout]   |     ^^^^^^^^ help: convert the identifier to snake case: `node_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `nodeNums` should have a snake case name
[INFO] [stdout]   --> src/algorithms/data_structure/simply_graph.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     nodeNums: usize,
[INFO] [stdout]    |     ^^^^^^^^ help: convert the identifier to snake case: `node_nums`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `nodeId` should have a snake case name
[INFO] [stdout]   --> src/algorithms/data_structure/simply_graph.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 |     fn new(nodeId: usize, nodeName: String) -> Node {
[INFO] [stdout]    |            ^^^^^^ help: convert the identifier to snake case: `node_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `nodeName` should have a snake case name
[INFO] [stdout]   --> src/algorithms/data_structure/simply_graph.rs:21:27
[INFO] [stdout]    |
[INFO] [stdout] 21 |     fn new(nodeId: usize, nodeName: String) -> Node {
[INFO] [stdout]    |                           ^^^^^^^^ help: convert the identifier to snake case: `node_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_open_file`
[INFO] [stdout]   --> src/main.rs:66:4
[INFO] [stdout]    |
[INFO] [stdout] 66 | fn test_open_file(filename: &str) -> Result<i32, Box<dyn Error>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_username_from_file`
[INFO] [stdout]   --> src/main.rs:79:4
[INFO] [stdout]    |
[INFO] [stdout] 79 | fn read_username_from_file() -> Result<String, Box<dyn Error>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `nodeId` should have a snake case name
[INFO] [stdout]  --> src/algorithms/data_structure/simply_graph.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     nodeId: usize,
[INFO] [stdout]   |     ^^^^^^ help: convert the identifier to snake case: `node_id`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `nodeName` should have a snake case name
[INFO] [stdout]  --> src/algorithms/data_structure/simply_graph.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     nodeName: String,
[INFO] [stdout]   |     ^^^^^^^^ help: convert the identifier to snake case: `node_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `nodeNums` should have a snake case name
[INFO] [stdout]   --> src/algorithms/data_structure/simply_graph.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     nodeNums: usize,
[INFO] [stdout]    |     ^^^^^^^^ help: convert the identifier to snake case: `node_nums`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `nodeId` should have a snake case name
[INFO] [stdout]   --> src/algorithms/data_structure/simply_graph.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 |     fn new(nodeId: usize, nodeName: String) -> Node {
[INFO] [stdout]    |            ^^^^^^ help: convert the identifier to snake case: `node_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `nodeName` should have a snake case name
[INFO] [stdout]   --> src/algorithms/data_structure/simply_graph.rs:21:27
[INFO] [stdout]    |
[INFO] [stdout] 21 |     fn new(nodeId: usize, nodeName: String) -> Node {
[INFO] [stdout]    |                           ^^^^^^^^ help: convert the identifier to snake case: `node_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.33s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]     Checking hello_world_rust v0.1.0 (/tmp/fixit)
[INFO] [stdout] warning: function is never used: `test_open_file`
[INFO] [stdout]   --> src/main.rs:66:4
[INFO] [stdout]    |
[INFO] [stdout] 66 | fn test_open_file(filename: &str) -> Result<i32, Box<dyn Error>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_username_from_file`
[INFO] [stdout]   --> src/main.rs:79:4
[INFO] [stdout]    |
[INFO] [stdout] 79 | fn read_username_from_file() -> Result<String, Box<dyn Error>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `nodeId` should have a snake case name
[INFO] [stdout]  --> src/algorithms/data_structure/simply_graph.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     nodeId: usize,
[INFO] [stdout]   |     ^^^^^^ help: convert the identifier to snake case: `node_id`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `nodeName` should have a snake case name
[INFO] [stdout]  --> src/algorithms/data_structure/simply_graph.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     nodeName: String,
[INFO] [stdout]   |     ^^^^^^^^ help: convert the identifier to snake case: `node_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `nodeNums` should have a snake case name
[INFO] [stdout]   --> src/algorithms/data_structure/simply_graph.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     nodeNums: usize,
[INFO] [stdout]    |     ^^^^^^^^ help: convert the identifier to snake case: `node_nums`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `nodeId` should have a snake case name
[INFO] [stdout]   --> src/algorithms/data_structure/simply_graph.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 |     fn new(nodeId: usize, nodeName: String) -> Node {
[INFO] [stdout]    |            ^^^^^^ help: convert the identifier to snake case: `node_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `nodeName` should have a snake case name
[INFO] [stdout]   --> src/algorithms/data_structure/simply_graph.rs:21:27
[INFO] [stdout]    |
[INFO] [stdout] 21 |     fn new(nodeId: usize, nodeName: String) -> Node {
[INFO] [stdout]    |                           ^^^^^^^^ help: convert the identifier to snake case: `node_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_open_file`
[INFO] [stdout]   --> src/main.rs:66:4
[INFO] [stdout]    |
[INFO] [stdout] 66 | fn test_open_file(filename: &str) -> Result<i32, Box<dyn Error>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_username_from_file`
[INFO] [stdout]   --> src/main.rs:79:4
[INFO] [stdout]    |
[INFO] [stdout] 79 | fn read_username_from_file() -> Result<String, Box<dyn Error>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `nodeId` should have a snake case name
[INFO] [stdout]  --> src/algorithms/data_structure/simply_graph.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     nodeId: usize,
[INFO] [stdout]   |     ^^^^^^ help: convert the identifier to snake case: `node_id`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `nodeName` should have a snake case name
[INFO] [stdout]  --> src/algorithms/data_structure/simply_graph.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     nodeName: String,
[INFO] [stdout]   |     ^^^^^^^^ help: convert the identifier to snake case: `node_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `nodeNums` should have a snake case name
[INFO] [stdout]   --> src/algorithms/data_structure/simply_graph.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     nodeNums: usize,
[INFO] [stdout]    |     ^^^^^^^^ help: convert the identifier to snake case: `node_nums`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `nodeId` should have a snake case name
[INFO] [stdout]   --> src/algorithms/data_structure/simply_graph.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 |     fn new(nodeId: usize, nodeName: String) -> Node {
[INFO] [stdout]    |            ^^^^^^ help: convert the identifier to snake case: `node_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `nodeName` should have a snake case name
[INFO] [stdout]   --> src/algorithms/data_structure/simply_graph.rs:21:27
[INFO] [stdout]    |
[INFO] [stdout] 21 |     fn new(nodeId: usize, nodeName: String) -> Node {
[INFO] [stdout]    |                           ^^^^^^^^ help: convert the identifier to snake case: `node_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.99s
[INFO] running `Command { std: "docker" "inspect" "6e295fc83b7ba3fdb72d7e3babf88a58a640c39ce9457b99c98acfa50903c8a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e295fc83b7ba3fdb72d7e3babf88a58a640c39ce9457b99c98acfa50903c8a4", kill_on_drop: false }`
[INFO] [stdout] 6e295fc83b7ba3fdb72d7e3babf88a58a640c39ce9457b99c98acfa50903c8a4