[INFO] cloning repository https://github.com/VengeQ/rust_recipes
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/VengeQ/rust_recipes" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVengeQ%2Frust_recipes", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVengeQ%2Frust_recipes'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7269a26fd10615c4f83224b63b2fe8935b4b6f2d
[INFO] checking VengeQ/rust_recipes against try#2cbf9c3ff35600794d69a7dc7ab399810a067910 for pr-129249-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVengeQ%2Frust_recipes" "/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/VengeQ/rust_recipes
[INFO] finished tweaking git repo https://github.com/VengeQ/rust_recipes
[INFO] tweaked toml for git repo https://github.com/VengeQ/rust_recipes written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/VengeQ/rust_recipes on toolchain 2cbf9c3ff35600794d69a7dc7ab399810a067910
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2cbf9c3ff35600794d69a7dc7ab399810a067910" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/VengeQ/rust_recipes 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" "+2cbf9c3ff35600794d69a7dc7ab399810a067910" "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/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@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 59143e592a17bab285c3570cda3b02eaf8336fc5c0dde876232d8e2f346115ab
[INFO] running `Command { std: "docker" "start" "59143e592a17bab285c3570cda3b02eaf8336fc5c0dde876232d8e2f346115ab", 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" "59143e592a17bab285c3570cda3b02eaf8336fc5c0dde876232d8e2f346115ab" "/opt/rustwide/cargo-home/bin/cargo" "+2cbf9c3ff35600794d69a7dc7ab399810a067910" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "59143e592a17bab285c3570cda3b02eaf8336fc5c0dde876232d8e2f346115ab", 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" "59143e592a17bab285c3570cda3b02eaf8336fc5c0dde876232d8e2f346115ab" "/opt/rustwide/cargo-home/bin/cargo" "+2cbf9c3ff35600794d69a7dc7ab399810a067910" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling getrandom v0.1.12
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking c2-chacha v0.2.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]     Checking rust-pilib v0.1.0 (/opt/rustwide/workdir/rust-pilib)
[INFO] [stdout] warning: feature `test` is declared but not used
[INFO] [stdout]  --> rust-pilib/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   |            ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_features)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rust_example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]  --> src/conc.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::time::Duration;
[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: `std::thread::Thread`
[INFO] [stdout]  --> src/conc.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::thread::Thread;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a_number`
[INFO] [stdout]   --> src/conc.rs:12:23
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn shared_data_thread(a_number: i32, a_vec: Vec<i32>) -> thread::JoinHandle<Vec<i32>> {
[INFO] [stdout]    |                       ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_a_number`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/conc.rs:31:13
[INFO] [stdout]    |
[INFO] [stdout] 31 |         for x in 0..10 {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `simple_threads_example` is never used
[INFO] [stdout]  --> src/conc.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn simple_threads_example() -> thread::JoinHandle<()> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `shared_data_thread` is never used
[INFO] [stdout]   --> src/conc.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn shared_data_thread(a_number: i32, a_vec: Vec<i32>) -> thread::JoinHandle<Vec<i32>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parallel_map` is never used
[INFO] [stdout]   --> src/conc.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn parallel_map(data: Vec<Vec<i32>>, f: fn(i32) -> i32) -> Vec<thread::JoinHandle<Vec<i32>>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `shared_date` is never used
[INFO] [stdout]   --> src/conc.rs:29:4
[INFO] [stdout]    |
[INFO] [stdout] 29 | fn shared_date(data: Arc<Mutex<String>>) -> thread::JoinHandle<()> {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread::Thread`
[INFO] [stdout]  --> src/conc.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::thread::Thread;
[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 `Result` that must be used
[INFO] [stdout]   --> src/main.rs:18:13
[INFO] [stdout]    |
[INFO] [stdout] 18 |             sender.send(Person { name: "Vasya".to_owned(), age: random::<usize>() % 40 + 10 });
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 18 |             let _ = sender.send(Person { name: "Vasya".to_owned(), age: random::<usize>() % 40 + 10 });
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a_number`
[INFO] [stdout]   --> src/conc.rs:12:23
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn shared_data_thread(a_number: i32, a_vec: Vec<i32>) -> thread::JoinHandle<Vec<i32>> {
[INFO] [stdout]    |                       ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_a_number`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/conc.rs:31:13
[INFO] [stdout]    |
[INFO] [stdout] 31 |         for x in 0..10 {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/conc.rs:72:13
[INFO] [stdout]    |
[INFO] [stdout] 72 |         for i in 1..5 {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:18:13
[INFO] [stdout]    |
[INFO] [stdout] 18 |             sender.send(Person { name: "Vasya".to_owned(), age: random::<usize>() % 40 + 10 });
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 18 |             let _ = sender.send(Person { name: "Vasya".to_owned(), age: random::<usize>() % 40 + 10 });
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.99s
[INFO] running `Command { std: "docker" "inspect" "59143e592a17bab285c3570cda3b02eaf8336fc5c0dde876232d8e2f346115ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59143e592a17bab285c3570cda3b02eaf8336fc5c0dde876232d8e2f346115ab", kill_on_drop: false }`
[INFO] [stdout] 59143e592a17bab285c3570cda3b02eaf8336fc5c0dde876232d8e2f346115ab
