[INFO] cloning repository https://github.com/vinod901/rust_practice
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vinod901/rust_practice" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvinod901%2Frust_practice", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvinod901%2Frust_practice'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 03f76b4097e35a75251175e421996ee68bfeb27c
[INFO] checking vinod901/rust_practice against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvinod901%2Frust_practice" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/vinod901/rust_practice
[INFO] finished tweaking git repo https://github.com/vinod901/rust_practice
[INFO] tweaked toml for git repo https://github.com/vinod901/rust_practice written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/vinod901/rust_practice on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/vinod901/rust_practice 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "d8534d15578a33ab4c2867f4b254a401537e8c114a1d7e2cc20ef867b6cb9fd4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d8534d15578a33ab4c2867f4b254a401537e8c114a1d7e2cc20ef867b6cb9fd4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8534d15578a33ab4c2867f4b254a401537e8c114a1d7e2cc20ef867b6cb9fd4", kill_on_drop: false }`
[INFO] [stdout] d8534d15578a33ab4c2867f4b254a401537e8c114a1d7e2cc20ef867b6cb9fd4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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 -Dunmustuse_in_always_ok" "-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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0bca3159ffaa8727d8833d5b86c4fa14b0e6a7e8358473b04df9b73354c1fdbd
[INFO] running `Command { std: "docker" "start" "-a" "0bca3159ffaa8727d8833d5b86c4fa14b0e6a7e8358473b04df9b73354c1fdbd", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.34
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[INFO] [stderr]     Checking rust_practice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `fold`
[INFO] [stdout]   --> src/files/fold.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn fold() -> String {
[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 import: `joins`
[INFO] [stdout]   --> src/files/joins.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn joins() -> String {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `hello`
[INFO] [stdout]   --> src/files/routes.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub fn hello(name: String, profession: String) -> String {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `read_csv`
[INFO] [stdout]   --> src/files/routes.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub fn read_csv(path: &str) -> String {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `get_query`
[INFO] [stdout]   --> src/files/routes.rs:87:8
[INFO] [stdout]    |
[INFO] [stdout] 87 | pub fn get_query() -> String {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `send_data`
[INFO] [stdout]    --> src/files/routes.rs:102:8
[INFO] [stdout]     |
[INFO] [stdout] 102 | pub fn send_data(data: Json<Person>) -> String {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sql_select`
[INFO] [stdout]  --> src/files/sql.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn sql_select() -> String {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `fold`
[INFO] [stdout]   --> src/files/fold.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn fold() -> String {
[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 import: `joins`
[INFO] [stdout]   --> src/files/joins.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn joins() -> String {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `hello`
[INFO] [stdout]   --> src/files/routes.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub fn hello(name: String, profession: String) -> String {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `read_csv`
[INFO] [stdout]   --> src/files/routes.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub fn read_csv(path: &str) -> String {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `get_query`
[INFO] [stdout]   --> src/files/routes.rs:87:8
[INFO] [stdout]    |
[INFO] [stdout] 87 | pub fn get_query() -> String {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `send_data`
[INFO] [stdout]    --> src/files/routes.rs:102:8
[INFO] [stdout]     |
[INFO] [stdout] 102 | pub fn send_data(data: Json<Person>) -> String {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sql_select`
[INFO] [stdout]  --> src/files/sql.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn sql_select() -> String {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `number` is never read
[INFO] [stdout]   --> src/files/joins.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct Mobile {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 13 |     id: u64,
[INFO] [stdout] 14 |     number: String,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Mobile` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/files/routes.rs:37:49
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let mut reader = csv::Reader::from_path(path.clone()).expect("sorry, can't open the file!");
[INFO] [stdout]    |                                                 ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over a `Result`. This is more readably written as an `if let` statement
[INFO] [stdout]   --> src/files/routes.rs:46:17
[INFO] [stdout]    |
[INFO] [stdout] 46 |     for head in reader.headers() {
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]    |
[INFO] [stdout] 46 -     for head in reader.headers() {
[INFO] [stdout] 46 +     while let Ok(head) = reader.headers() {
[INFO] [stdout]    |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 46 -     for head in reader.headers() {
[INFO] [stdout] 46 +     if let Ok(head) = reader.headers() {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<&str, Infallible>
[INFO] [stdout]   --> src/files/routes.rs:34:23
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub fn read_csv(path: &str) -> String {
[INFO] [stdout]    |                       ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_practice` (bin "rust_practice") due to 1 previous error; 10 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: field `number` is never read
[INFO] [stdout]   --> src/files/joins.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct Mobile {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 13 |     id: u64,
[INFO] [stdout] 14 |     number: String,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Mobile` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/files/routes.rs:37:49
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let mut reader = csv::Reader::from_path(path.clone()).expect("sorry, can't open the file!");
[INFO] [stdout]    |                                                 ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over a `Result`. This is more readably written as an `if let` statement
[INFO] [stdout]   --> src/files/routes.rs:46:17
[INFO] [stdout]    |
[INFO] [stdout] 46 |     for head in reader.headers() {
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]    |
[INFO] [stdout] 46 -     for head in reader.headers() {
[INFO] [stdout] 46 +     while let Ok(head) = reader.headers() {
[INFO] [stdout]    |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 46 -     for head in reader.headers() {
[INFO] [stdout] 46 +     if let Ok(head) = reader.headers() {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<&str, Infallible>
[INFO] [stdout]   --> src/files/routes.rs:34:23
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub fn read_csv(path: &str) -> String {
[INFO] [stdout]    |                       ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_practice` (bin "rust_practice" test) due to 1 previous error; 10 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "0bca3159ffaa8727d8833d5b86c4fa14b0e6a7e8358473b04df9b73354c1fdbd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0bca3159ffaa8727d8833d5b86c4fa14b0e6a7e8358473b04df9b73354c1fdbd", kill_on_drop: false }`
[INFO] [stdout] 0bca3159ffaa8727d8833d5b86c4fa14b0e6a7e8358473b04df9b73354c1fdbd
