[INFO] cloning repository https://github.com/ploynomail/practise_rust_todolist
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ploynomail/practise_rust_todolist" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fploynomail%2Fpractise_rust_todolist", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fploynomail%2Fpractise_rust_todolist'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a5320a3789c3b9fa2ae5f5021e6af9daede051aa
[INFO] checking ploynomail/practise_rust_todolist 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%2Fploynomail%2Fpractise_rust_todolist" "/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/ploynomail/practise_rust_todolist
[INFO] finished tweaking git repo https://github.com/ploynomail/practise_rust_todolist
[INFO] tweaked toml for git repo https://github.com/ploynomail/practise_rust_todolist written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ploynomail/practise_rust_todolist 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/ploynomail/practise_rust_todolist 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 }`
[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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 12d2800e50a39d7fa15e632e543165a7d77a2cc4bff4fb48d09c9e1c44728c26
[INFO] running `Command { std: "docker" "start" "-a" "12d2800e50a39d7fa15e632e543165a7d77a2cc4bff4fb48d09c9e1c44728c26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "12d2800e50a39d7fa15e632e543165a7d77a2cc4bff4fb48d09c9e1c44728c26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12d2800e50a39d7fa15e632e543165a7d77a2cc4bff4fb48d09c9e1c44728c26", kill_on_drop: false }`
[INFO] [stdout] 12d2800e50a39d7fa15e632e543165a7d77a2cc4bff4fb48d09c9e1c44728c26
[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 -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] 2144ca6ae02097f7ce962523631b8ce8cc4062746b87d0ed1519e2fec038c7c8
[INFO] running `Command { std: "docker" "start" "-a" "2144ca6ae02097f7ce962523631b8ce8cc4062746b87d0ed1519e2fec038c7c8", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.69
[INFO] [stderr]    Compiling libc v0.2.150
[INFO] [stderr]    Compiling serde v1.0.192
[INFO] [stderr]    Compiling serde_json v1.0.108
[INFO] [stderr]     Checking clap_lex v0.2.4
[INFO] [stderr]     Checking textwrap v0.16.0
[INFO] [stderr]     Checking termcolor v1.3.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling clap_derive v3.2.25
[INFO] [stderr]     Checking clap v3.2.25
[INFO] [stderr]     Checking rdo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Args`
[INFO] [stdout]  --> src/cli.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | use clap::{Args, Parser, Subcommand};
[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: `crate::cli::Commands`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::cli::Commands;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Args`
[INFO] [stdout]  --> src/cli.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | use clap::{Args, Parser, Subcommand};
[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: `crate::cli::Commands`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::cli::Commands;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/store.rs:111:13
[INFO] [stdout]     |
[INFO] [stdout] 111 |         let mut store: HashMap<String, String> = serde_json::from_str(&content).unwrap();
[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: field `id` is never read
[INFO] [stdout]  --> src/record.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Record {
[INFO] [stdout]   |            ------ field in this struct
[INFO] [stdout] 4 |     id: i32,
[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 `LocalStore` is never constructed
[INFO] [stdout]   --> src/store.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub struct LocalStore {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/store.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | impl LocalStore {
[INFO] [stdout]    | --------------- associated function in this implementation
[INFO] [stdout] 27 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/cli.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |         content: Option<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 `rdo` (bin "rdo" test) due to 1 previous error; 6 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/store.rs:111:13
[INFO] [stdout]     |
[INFO] [stdout] 111 |         let mut store: HashMap<String, String> = serde_json::from_str(&content).unwrap();
[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: field `id` is never read
[INFO] [stdout]  --> src/record.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Record {
[INFO] [stdout]   |            ------ field in this struct
[INFO] [stdout] 4 |     id: i32,
[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 `LocalStore` is never constructed
[INFO] [stdout]   --> src/store.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub struct LocalStore {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/store.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | impl LocalStore {
[INFO] [stdout]    | --------------- associated function in this implementation
[INFO] [stdout] 27 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/cli.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |         content: Option<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 `rdo` (bin "rdo") due to 1 previous error; 6 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "2144ca6ae02097f7ce962523631b8ce8cc4062746b87d0ed1519e2fec038c7c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2144ca6ae02097f7ce962523631b8ce8cc4062746b87d0ed1519e2fec038c7c8", kill_on_drop: false }`
[INFO] [stdout] 2144ca6ae02097f7ce962523631b8ce8cc4062746b87d0ed1519e2fec038c7c8
