[INFO] cloning repository https://github.com/bellsong/HiRust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bellsong/HiRust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbellsong%2FHiRust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbellsong%2FHiRust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 30ad57160190cfa2b18bcd8317244c2b6dd57116
[INFO] checking bellsong/HiRust against 4d7c0cd298ace72490220301fa543d63a154f8ce for pr-164789
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbellsong%2FHiRust" "/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/bellsong/HiRust
[INFO] finished tweaking git repo https://github.com/bellsong/HiRust
[INFO] tweaked toml for git repo https://github.com/bellsong/HiRust written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/bellsong/HiRust on toolchain 4d7c0cd298ace72490220301fa543d63a154f8ce
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d7c0cd298ace72490220301fa543d63a154f8ce" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/bellsong/HiRust 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" "+4d7c0cd298ace72490220301fa543d63a154f8ce" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking bellsong/HiRust against 4d7c0cd298ace72490220301fa543d63a154f8ce for pr-164789
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbellsong%2FHiRust" "/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/bellsong/HiRust
[INFO] finished tweaking git repo https://github.com/bellsong/HiRust
[INFO] tweaked toml for git repo https://github.com/bellsong/HiRust written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/bellsong/HiRust on toolchain 4d7c0cd298ace72490220301fa543d63a154f8ce
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d7c0cd298ace72490220301fa543d63a154f8ce" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/bellsong/HiRust 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" "+4d7c0cd298ace72490220301fa543d63a154f8ce" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:c0af3998e971868164375a7dfb646c9933ddd1a3bdb00fa2041266763dc1eeab" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] b646a739ac538148bde8b737ddccbab3a0e94b5345a7bfc8e192ebbdbcab0905
[INFO] running `Command { std: "docker" "start" "b646a739ac538148bde8b737ddccbab3a0e94b5345a7bfc8e192ebbdbcab0905", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b646a739ac538148bde8b737ddccbab3a0e94b5345a7bfc8e192ebbdbcab0905", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "b646a739ac538148bde8b737ddccbab3a0e94b5345a7bfc8e192ebbdbcab0905" "/opt/rustwide/cargo-home/bin/cargo" "+4d7c0cd298ace72490220301fa543d63a154f8ce" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b646a739ac538148bde8b737ddccbab3a0e94b5345a7bfc8e192ebbdbcab0905", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "b646a739ac538148bde8b737ddccbab3a0e94b5345a7bfc8e192ebbdbcab0905" "/opt/rustwide/cargo-home/bin/cargo" "+4d7c0cd298ace72490220301fa543d63a154f8ce" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking HiRust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/val.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let mut a = 1;
[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: variable does not need to be mutable
[INFO] [stdout]  --> src/val.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut b = 0.2;
[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/val.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let mut c = 123;
[INFO] [stdout]   |         ----^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]  --> src/val.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let s = "Hello Rust";
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]  --> src/val.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let mut a = 1;
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]  --> src/val.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut b = 0.2;
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/val.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let mut a = 1;
[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: variable does not need to be mutable
[INFO] [stdout]  --> src/val.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut b = 0.2;
[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/val.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let mut c = 123;
[INFO] [stdout]   |         ----^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]  --> src/val.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let s = "Hello Rust";
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]  --> src/val.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let mut a = 1;
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]  --> src/val.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut b = 0.2;
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]  --> src/val.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let mut c = 123;
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `array`
[INFO] [stdout]  --> src/val.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let array:[i32; 3] = [1,2,3];
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_array`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]  --> src/val.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let mut c = 123;
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `array`
[INFO] [stdout]  --> src/val.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let array:[i32; 3] = [1,2,3];
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_array`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `age` are never read
[INFO] [stdout]   --> src/main.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 39 | struct Person<'a> {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 40 |     name: &'a str,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 41 |     age:u8
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Person` 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: function `val` is never used
[INFO] [stdout]  --> src/val.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn val(){
[INFO] [stdout]   |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `age` are never read
[INFO] [stdout]   --> src/main.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 39 | struct Person<'a> {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 40 |     name: &'a str,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 41 |     age:u8
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Person` 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: function `val` is never used
[INFO] [stdout]  --> src/val.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn val(){
[INFO] [stdout]   |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] running `Command { std: "docker" "inspect" "b646a739ac538148bde8b737ddccbab3a0e94b5345a7bfc8e192ebbdbcab0905", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b646a739ac538148bde8b737ddccbab3a0e94b5345a7bfc8e192ebbdbcab0905", kill_on_drop: false }`
[INFO] [stdout] b646a739ac538148bde8b737ddccbab3a0e94b5345a7bfc8e192ebbdbcab0905
