[INFO] cloning repository https://github.com/warnp/demo_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/warnp/demo_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwarnp%2Fdemo_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwarnp%2Fdemo_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6fd631ff77ac2545b089af87685519032e2c3f78
[INFO] checking warnp/demo_rust against master#297a8018b525c28ef10ee6a91d61954839b508b9 for pr-95565
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwarnp%2Fdemo_rust" "/workspace/builds/worker-80/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-80/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/warnp/demo_rust on toolchain 297a8018b525c28ef10ee6a91d61954839b508b9
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+297a8018b525c28ef10ee6a91d61954839b508b9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/warnp/demo_rust
[INFO] finished tweaking git repo https://github.com/warnp/demo_rust
[INFO] tweaked toml for git repo https://github.com/warnp/demo_rust written to /workspace/builds/worker-80/source/Cargo.toml
[INFO] crate git repo https://github.com/warnp/demo_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+297a8018b525c28ef10ee6a91d61954839b508b9" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded smallvec v1.8.0
[INFO] [stderr]   Downloaded futures-io v0.3.19
[INFO] [stderr]   Downloaded futures-macro v0.3.19
[INFO] [stderr]   Downloaded pin-project-lite v0.2.8
[INFO] [stderr]   Downloaded futures-executor v0.3.19
[INFO] [stderr]   Downloaded futures v0.3.19
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-80/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-80/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+297a8018b525c28ef10ee6a91d61954839b508b9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f32b239224f6e01b9ae8b333bd6410a9ab67519e171a80e7bf8f150be554fb45
[INFO] running `Command { std: "docker" "start" "-a" "f32b239224f6e01b9ae8b333bd6410a9ab67519e171a80e7bf8f150be554fb45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f32b239224f6e01b9ae8b333bd6410a9ab67519e171a80e7bf8f150be554fb45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f32b239224f6e01b9ae8b333bd6410a9ab67519e171a80e7bf8f150be554fb45", kill_on_drop: false }`
[INFO] [stdout] f32b239224f6e01b9ae8b333bd6410a9ab67519e171a80e7bf8f150be554fb45
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-80/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-80/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+297a8018b525c28ef10ee6a91d61954839b508b9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cf7c2941e44d8f4ee77ef9c964d215e67911f109c5a4306941a0d419618256c0
[INFO] running `Command { std: "docker" "start" "-a" "cf7c2941e44d8f4ee77ef9c964d215e67911f109c5a4306941a0d419618256c0", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.85
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling futures-core v0.3.19
[INFO] [stderr]    Compiling futures-channel v0.3.19
[INFO] [stderr]    Compiling futures-task v0.3.19
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]     Checking futures-sink v0.3.19
[INFO] [stderr]    Compiling futures-util v0.3.19
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking pin-project-lite v0.2.8
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking slab v0.4.5
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking futures-io v0.3.19
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]     Checking once_cell v1.9.0
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]     Checking lock_api v0.4.5
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]    Compiling quote v1.0.14
[INFO] [stderr]     Checking mio v0.7.14
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]    Compiling futures-macro v0.3.19
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]     Checking tokio v1.15.0
[INFO] [stderr]     Checking futures-executor v0.3.19
[INFO] [stderr]     Checking futures v0.3.19
[INFO] [stderr]     Checking demo_rust_easy_mode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `BorrowMut`, `Borrow`
[INFO] [stdout]  --> src/main.rs:1:19
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::borrow::{Borrow, BorrowMut};
[INFO] [stdout]   |                   ^^^^^^  ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BorrowMut`, `Borrow`
[INFO] [stdout]  --> src/main.rs:1:19
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::borrow::{Borrow, BorrowMut};
[INFO] [stdout]   |                   ^^^^^^  ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `format`, `write`
[INFO] [stdout]  --> src/main.rs:3:25
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::fmt::{Display, format, Formatter, write};
[INFO] [stdout]   |                         ^^^^^^             ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `format`, `write`
[INFO] [stdout]  --> src/main.rs:3:25
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::fmt::{Display, format, Formatter, write};
[INFO] [stdout]   |                         ^^^^^^             ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures::executor::block_on`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use futures::executor::block_on;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures::executor::block_on`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use futures::executor::block_on;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures::join`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use futures::join;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures::join`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use futures::join;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `spawn`
[INFO] [stdout]    --> src/main.rs:125:13
[INFO] [stdout]     |
[INFO] [stdout] 125 |         let spawn = tokio::spawn(async move {
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_spawn`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bad_guy_attack_result`
[INFO] [stdout]    --> src/main.rs:135:13
[INFO] [stdout]     |
[INFO] [stdout] 135 |         let bad_guy_attack_result = bad_guy.lock().unwrap().attack(our_hero.clone());
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_bad_guy_attack_result`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r`
[INFO] [stdout]    --> src/main.rs:139:17
[INFO] [stdout]     |
[INFO] [stdout] 139 |             Err(r) => {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `damage_amount`
[INFO] [stdout]   --> src/main.rs:42:30
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn get_damage(&mut self, damage_amount: i32) -> Result<i32, LifeError> {
[INFO] [stdout]    |                              ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_damage_amount`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `spawn`
[INFO] [stdout]    --> src/main.rs:125:13
[INFO] [stdout]     |
[INFO] [stdout] 125 |         let spawn = tokio::spawn(async move {
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_spawn`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bad_guy_attack_result`
[INFO] [stdout]    --> src/main.rs:135:13
[INFO] [stdout]     |
[INFO] [stdout] 135 |         let bad_guy_attack_result = bad_guy.lock().unwrap().attack(our_hero.clone());
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_bad_guy_attack_result`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r`
[INFO] [stdout]    --> src/main.rs:139:17
[INFO] [stdout]     |
[INFO] [stdout] 139 |             Err(r) => {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `damage_amount`
[INFO] [stdout]   --> src/main.rs:42:30
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn get_damage(&mut self, damage_amount: i32) -> Result<i32, LifeError> {
[INFO] [stdout]    |                              ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_damage_amount`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:104:9
[INFO] [stdout]     |
[INFO] [stdout] 104 |     let mut bad_guy = BadGuy {
[INFO] [stdout]     |         ----^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:104:9
[INFO] [stdout]     |
[INFO] [stdout] 104 |     let mut bad_guy = BadGuy {
[INFO] [stdout]     |         ----^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 36s
[INFO] running `Command { std: "docker" "inspect" "cf7c2941e44d8f4ee77ef9c964d215e67911f109c5a4306941a0d419618256c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf7c2941e44d8f4ee77ef9c964d215e67911f109c5a4306941a0d419618256c0", kill_on_drop: false }`
[INFO] [stdout] cf7c2941e44d8f4ee77ef9c964d215e67911f109c5a4306941a0d419618256c0