[INFO] cloning repository https://github.com/aashoo17/rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/aashoo17/rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faashoo17%2Frust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faashoo17%2Frust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6e17185f9a75c8e23cfbfffc08a1317eb9d1123d
[INFO] checking aashoo17/rust against try#b0d0ea232bdae12fa8da8491a91ae1db029990ef for pr-84037
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faashoo17%2Frust" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/aashoo17/rust on toolchain b0d0ea232bdae12fa8da8491a91ae1db029990ef
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/aashoo17/rust
[INFO] finished tweaking git repo https://github.com/aashoo17/rust
[INFO] tweaked toml for git repo https://github.com/aashoo17/rust written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/aashoo17/rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d97972a1f3466b38a792520a1ce67e007cb179160d641921ac1606a9efd60c35
[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" "d97972a1f3466b38a792520a1ce67e007cb179160d641921ac1606a9efd60c35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d97972a1f3466b38a792520a1ce67e007cb179160d641921ac1606a9efd60c35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d97972a1f3466b38a792520a1ce67e007cb179160d641921ac1606a9efd60c35", kill_on_drop: false }`
[INFO] [stdout] d97972a1f3466b38a792520a1ce67e007cb179160d641921ac1606a9efd60c35
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 190cdfdc5ba05b2472791a30fb596bf475bcb5cdfff36638e925bca354e0048e
[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" "190cdfdc5ba05b2472791a30fb596bf475bcb5cdfff36638e925bca354e0048e", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.71
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking pin-project-lite v0.2.6
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]    Compiling tokio v1.5.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]     Checking log v0.4.14
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking signal-hook-registry v1.3.0
[INFO] [stderr]     Checking lock_api v0.4.3
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking mio v0.7.11
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling tokio-macros v1.1.0
[INFO] [stderr]     Checking rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::collections::BinaryHeap`
[INFO] [stdout]  --> src/collections/binary_heap.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::BinaryHeap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::LinkedList`
[INFO] [stdout]  --> src/collections/list.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::LinkedList;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BTreeMap`, `HashMap`
[INFO] [stdout]  --> src/collections/map.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{BTreeMap, HashMap};
[INFO] [stdout]   |                        ^^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BTreeSet`, `HashSet`
[INFO] [stdout]  --> src/collections/set.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{BTreeSet, HashSet};
[INFO] [stdout]   |                        ^^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Arc`, `Mutex`, `mpsc`
[INFO] [stdout]  --> src/concurrency.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::sync::{mpsc, Arc, Mutex};
[INFO] [stdout]   |                 ^^^^  ^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]  --> src/concurrency.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::thread;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::mem::ManuallyDrop`
[INFO] [stdout]  --> src/core/mem/manually_drop.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use core::mem::ManuallyDrop;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `MaybeUninit`, `self`
[INFO] [stdout]   --> src/core/mem/maybe_uninit.rs:29:17
[INFO] [stdout]    |
[INFO] [stdout] 29 | use core::mem::{self, MaybeUninit};
[INFO] [stdout]    |                 ^^^^  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::num::NonZeroI32`
[INFO] [stdout]  --> src/core/num.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::num::NonZeroI32;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::num::NonZeroUsize`
[INFO] [stdout]  --> src/core/num.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use core::num::NonZeroUsize;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::ptr::null`
[INFO] [stdout]  --> src/core/ptr/const_ptr.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use core::ptr::null;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::ptr::null_mut`
[INFO] [stdout]  --> src/core/ptr/const_ptr.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use core::ptr::null_mut;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::ptr::Unique`
[INFO] [stdout]   --> src/core/ptr/unique.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | use core::ptr::Unique;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `File`, `OpenOptions`
[INFO] [stdout]  --> src/io.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fs::{File, OpenOptions};
[INFO] [stdout]   |               ^^^^  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufReader`, `BufWriter`, `Read`, `Write`
[INFO] [stdout]  --> src/io.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{BufReader, BufWriter, Read, Write};
[INFO] [stdout]   |               ^^^^^^^^^  ^^^^^^^^^  ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/net/tcp.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Read`, `Write`, `self`
[INFO] [stdout]  --> src/net/tcp.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{self, Read, Write};
[INFO] [stdout]   |               ^^^^  ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `TcpListener`, `TcpStream`
[INFO] [stdout]  --> src/net/tcp.rs:3:16
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::net::{TcpListener, TcpStream};
[INFO] [stdout]   |                ^^^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/net/udp.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> src/net/udp.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::net::UdpSocket`
[INFO] [stdout]  --> src/net/udp.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::net::UdpSocket;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufMut`, `BytesMut`, `Bytes`
[INFO] [stdout]  --> src/tokio/byte.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use bytes::{BufMut, Bytes, BytesMut};
[INFO] [stdout]   |             ^^^^^^  ^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/tokio/channels.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::io`
[INFO] [stdout]  --> src/tokio/channels.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use tokio::io;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::runtime::Runtime`
[INFO] [stdout]  --> src/tokio/channels.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use tokio::runtime::Runtime;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::sync::mpsc`
[INFO] [stdout]  --> src/tokio/channels.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use tokio::sync::mpsc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/tokio/io.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `File`, `OpenOptions`
[INFO] [stdout]  --> src/tokio/io.rs:2:17
[INFO] [stdout]   |
[INFO] [stdout] 2 | use tokio::fs::{File, OpenOptions};
[INFO] [stdout]   |                 ^^^^  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `AsyncReadExt`, `AsyncWriteExt`, `self`
[INFO] [stdout]  --> src/tokio/io.rs:3:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | use tokio::io::{self, AsyncReadExt, AsyncWriteExt};
[INFO] [stdout]   |                 ^^^^  ^^^^^^^^^^^^  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/tokio/mutex.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::Arc`
[INFO] [stdout]  --> src/tokio/mutex.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::sync::Arc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::runtime::Runtime`
[INFO] [stdout]  --> src/tokio/mutex.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use tokio::runtime::Runtime;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Mutex`, `mpsc`
[INFO] [stdout]  --> src/tokio/mutex.rs:4:19
[INFO] [stdout]   |
[INFO] [stdout] 4 | use tokio::sync::{mpsc, Mutex};
[INFO] [stdout]   |                   ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/tokio/net/tcp.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::io`
[INFO] [stdout]  --> src/tokio/net/tcp.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use tokio::io;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `AsyncReadExt`, `AsyncWriteExt`
[INFO] [stdout]  --> src/tokio/net/tcp.rs:3:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | use tokio::io::{AsyncReadExt, AsyncWriteExt};
[INFO] [stdout]   |                 ^^^^^^^^^^^^  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `TcpListener`, `TcpStream`
[INFO] [stdout]  --> src/tokio/net/tcp.rs:4:18
[INFO] [stdout]   |
[INFO] [stdout] 4 | use tokio::net::{TcpListener, TcpStream};
[INFO] [stdout]   |                  ^^^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::sync::mpsc`
[INFO] [stdout]  --> src/tokio/net/tcp.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use tokio::sync::mpsc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/tokio/net/udp.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::net::SocketAddr`
[INFO] [stdout]  --> src/tokio/net/udp.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::net::SocketAddr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::Arc`
[INFO] [stdout]  --> src/tokio/net/udp.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::sync::Arc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::io::AsyncWriteExt`
[INFO] [stdout]  --> src/tokio/net/udp.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use tokio::io::AsyncWriteExt;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::net::UdpSocket`
[INFO] [stdout]  --> src/tokio/net/udp.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use tokio::net::UdpSocket;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::sync::mpsc`
[INFO] [stdout]  --> src/tokio/net/udp.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use tokio::sync::mpsc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]   --> src/tokio/runtime.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::error::Error;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Runtime`, `self`
[INFO] [stdout]   --> src/tokio/runtime.rs:12:22
[INFO] [stdout]    |
[INFO] [stdout] 12 | use tokio::runtime::{self, Runtime};
[INFO] [stdout]    |                      ^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]   --> src/core/mem/maybe_uninit.rs:29:17
[INFO] [stdout]    |
[INFO] [stdout] 29 | use core::mem::{self, MaybeUninit};
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/macros.rs:135:24
[INFO] [stdout]     |
[INFO] [stdout] 135 |         $(a.push($l);)*;
[INFO] [stdout]     |                        ^ help: remove this semicolon
[INFO] [stdout] ...
[INFO] [stdout] 151 |     let a = recursion_in_macro![10, 20, 30, 40];
[INFO] [stdout]     |             ----------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/net/tcp.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/net/udp.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Bytes`
[INFO] [stdout]  --> src/tokio/byte.rs:1:21
[INFO] [stdout]   |
[INFO] [stdout] 1 | use bytes::{BufMut, Bytes, BytesMut};
[INFO] [stdout]   |                     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/tokio/channels.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/tokio/io.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `mpsc`
[INFO] [stdout]  --> src/tokio/mutex.rs:4:19
[INFO] [stdout]   |
[INFO] [stdout] 4 | use tokio::sync::{mpsc, Mutex};
[INFO] [stdout]   |                   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::net::SocketAddr`
[INFO] [stdout]  --> src/tokio/net/udp.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::net::SocketAddr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::io::AsyncWriteExt`
[INFO] [stdout]  --> src/tokio/net/udp.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use tokio::io::AsyncWriteExt;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::sync::mpsc`
[INFO] [stdout]  --> src/tokio/net/udp.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use tokio::sync::mpsc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]  --> src/collections/deque.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let a: VecDeque<i32> = VecDeque::new(); //blank deque
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]  --> src/collections/deque.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let c: VecDeque<i32> = VecDeque::with_capacity(20); //create with initial given size
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/collections/deque.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |     for i in &b {}
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/collections/deque.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     for i in &mut b {}
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/collections/deque.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |     for i in b {}
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/core/ptr/non_null.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let c = unsafe { NonNull::new_unchecked(a) };
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `d`
[INFO] [stdout]   --> src/core/ptr/non_null.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let d = b.as_ptr();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_d`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/core/ptr/non_null.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let e = unsafe { b.as_ref() };
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/core/ptr/non_null.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let f = unsafe { b.as_mut() };
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `g`
[INFO] [stdout]   --> src/core/ptr/non_null.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let g = b.cast::<u32>();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_g`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/core/ptr/non_null.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let e = d.len();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/core/ptr/non_null.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let f = d.as_non_null_ptr();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `g`
[INFO] [stdout]   --> src/core/ptr/non_null.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let g = d.as_mut_ptr();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_g`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `h`
[INFO] [stdout]   --> src/core/ptr/non_null.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let h = unsafe { d.get_unchecked_mut(1..4) };
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_h`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `file`
[INFO] [stdout]   --> src/error_handling.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let file = File::open("file.txt").unwrap();
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_file`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `file`
[INFO] [stdout]   --> src/error_handling.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let file = File::open("file.txt").expect("file opening error");
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_file`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `file`
[INFO] [stdout]   --> src/error_handling.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |     let file = File::open("unavailable_file.txt")?;
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_file`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `x` is assigned to, but never used
[INFO] [stdout]   --> src/lifetimes.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let x: &i32;
[INFO] [stdout]    |         ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_x` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `x` is never read
[INFO] [stdout]   --> src/lifetimes.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |         x = &y; //this is where reference var x is used last 'a ends here
[INFO] [stdout]    |         ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `o`
[INFO] [stdout]   --> src/structs.rs:98:9
[INFO] [stdout]    |
[INFO] [stdout] 98 |     let o = OneSuch;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_o`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/types.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let a = 10.8f32;
[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/types.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |     let b = 10.8;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/types.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |     let a = true;
[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/types.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let b = false;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `deque`
[INFO] [stdout]  --> src/collections/deque.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn deque() {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `drop`
[INFO] [stdout]   --> src/core/mem/mod.rs:67:4
[INFO] [stdout]    |
[INFO] [stdout] 67 | fn drop() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `after_cleanup_single_thread_access`
[INFO] [stdout]   --> src/core/ptr/mut_ptr.rs:58:8
[INFO] [stdout]    |
[INFO] [stdout] 58 | pub fn after_cleanup_single_thread_access() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `access_freed_memory`
[INFO] [stdout]   --> src/core/ptr/mut_ptr.rs:66:4
[INFO] [stdout]    |
[INFO] [stdout] 66 | fn access_freed_memory() -> *mut i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `multi_thread_data_race`
[INFO] [stdout]   --> src/core/ptr/mut_ptr.rs:73:8
[INFO] [stdout]    |
[INFO] [stdout] 73 | pub fn multi_thread_data_race() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `multi_thread_data_race2`
[INFO] [stdout]   --> src/core/ptr/mut_ptr.rs:93:8
[INFO] [stdout]    |
[INFO] [stdout] 93 | pub fn multi_thread_data_race2() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `create_nonnull`
[INFO] [stdout]   --> src/core/ptr/non_null.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn create_nonnull() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `nonnull_array`
[INFO] [stdout]   --> src/core/ptr/non_null.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn nonnull_array() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `MyOrdering`
[INFO] [stdout]  --> src/enums.rs:2:6
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum MyOrdering {
[INFO] [stdout]   |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `HttpStatus`
[INFO] [stdout]  --> src/enums.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | enum HttpStatus {
[INFO] [stdout]   |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Name`
[INFO] [stdout]   --> src/enums.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     Name(String),
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Age`
[INFO] [stdout]   --> src/enums.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     Age(i32),
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `MyResult`
[INFO] [stdout]   --> src/enums.rs:22:6
[INFO] [stdout]    |
[INFO] [stdout] 22 | enum MyResult<T, E> {
[INFO] [stdout]    |      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `MyOption`
[INFO] [stdout]   --> src/enums.rs:27:6
[INFO] [stdout]    |
[INFO] [stdout] 27 | enum MyOption<T> {
[INFO] [stdout]    |      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pattern_matching`
[INFO] [stdout]   --> src/enums.rs:33:4
[INFO] [stdout]    |
[INFO] [stdout] 33 | fn pattern_matching() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `unwrap_use`
[INFO] [stdout]   --> src/error_handling.rs:41:4
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn unwrap_use() {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `expect_use`
[INFO] [stdout]   --> src/error_handling.rs:46:4
[INFO] [stdout]    |
[INFO] [stdout] 46 | fn expect_use() {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `return_error`
[INFO] [stdout]   --> src/error_handling.rs:51:4
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn return_error() -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sample`
[INFO] [stdout]   --> src/lifetimes.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn sample() {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]  --> src/operator_overloading.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn new(age: i32) -> Self {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Human`
[INFO] [stdout]   --> src/structs.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct Human {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/structs.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_age`
[INFO] [stdout]   --> src/structs.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn read_age(&self) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `change_age`
[INFO] [stdout]   --> src/structs.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn change_age(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `consume_struct`
[INFO] [stdout]   --> src/structs.rs:54:8
[INFO] [stdout]    |
[INFO] [stdout] 54 |     fn consume_struct(mut self) -> Self {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Bounds`
[INFO] [stdout]   --> src/structs.rs:68:12
[INFO] [stdout]    |
[INFO] [stdout] 68 | pub struct Bounds(usize, usize);
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `bounds`
[INFO] [stdout]   --> src/structs.rs:70:4
[INFO] [stdout]    |
[INFO] [stdout] 70 | fn bounds() {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `OneSuch`
[INFO] [stdout]   --> src/structs.rs:91:8
[INFO] [stdout]    |
[INFO] [stdout] 91 | struct OneSuch;
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `create_onesuch`
[INFO] [stdout]   --> src/structs.rs:97:4
[INFO] [stdout]    |
[INFO] [stdout] 97 | fn create_onesuch() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Man`
[INFO] [stdout]    --> src/structs.rs:103:8
[INFO] [stdout]     |
[INFO] [stdout] 103 | struct Man<T> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `AnotherMan`
[INFO] [stdout]    --> src/structs.rs:125:8
[INFO] [stdout]     |
[INFO] [stdout] 125 | struct AnotherMan<'a> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `generic_with_trait_bound`
[INFO] [stdout]   --> src/traits_generics.rs:45:4
[INFO] [stdout]    |
[INFO] [stdout] 45 | fn generic_with_trait_bound<T: Human>(x: &T) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `floats`
[INFO] [stdout]   --> src/types.rs:42:4
[INFO] [stdout]    |
[INFO] [stdout] 42 | fn floats() {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `bool`
[INFO] [stdout]   --> src/types.rs:48:4
[INFO] [stdout]    |
[INFO] [stdout] 48 | fn bool() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `SomeUnsizedStruct`
[INFO] [stdout]   --> src/utility_traits.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | struct SomeUnsizedStruct<T: ?Sized> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 105 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'nonzero_leading_trailing_zeros'
[INFO] [stdout]   --> src/core/num.rs:19:15
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let e = a.leading_zeros();
[INFO] [stdout]    |               ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #79143 <https://github.com/rust-lang/rust/issues/79143> for more information
[INFO] [stdout]    = help: add `#![feature(nonzero_leading_trailing_zeros)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'nonzero_leading_trailing_zeros'
[INFO] [stdout]   --> src/core/num.rs:20:15
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let f = a.trailing_zeros();
[INFO] [stdout]    |               ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #79143 <https://github.com/rust-lang/rust/issues/79143> for more information
[INFO] [stdout]    = help: add `#![feature(nonzero_leading_trailing_zeros)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "190cdfdc5ba05b2472791a30fb596bf475bcb5cdfff36638e925bca354e0048e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "190cdfdc5ba05b2472791a30fb596bf475bcb5cdfff36638e925bca354e0048e", kill_on_drop: false }`
[INFO] [stdout] 190cdfdc5ba05b2472791a30fb596bf475bcb5cdfff36638e925bca354e0048e