[INFO] cloning repository https://github.com/ColorCamo/BenchStress
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ColorCamo/BenchStress" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FColorCamo%2FBenchStress", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FColorCamo%2FBenchStress'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e03200bc1b8ef668576f85b5e0fa649513882055
[INFO] testing ColorCamo/BenchStress against 1.99.0-beta.8+cargoflags=--release for beta-release-1.100-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FColorCamo%2FBenchStress" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ColorCamo/BenchStress
[INFO] finished tweaking git repo https://github.com/ColorCamo/BenchStress
[INFO] tweaked toml for git repo https://github.com/ColorCamo/BenchStress written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ColorCamo/BenchStress on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ColorCamo/BenchStress 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" "+1.99.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] a9a646025a54886209c0568078c3b00f677e7c371d9c178a0ddcde38fc09d1e0
[INFO] running `Command { std: "docker" "start" "a9a646025a54886209c0568078c3b00f677e7c371d9c178a0ddcde38fc09d1e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a9a646025a54886209c0568078c3b00f677e7c371d9c178a0ddcde38fc09d1e0", 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" "a9a646025a54886209c0568078c3b00f677e7c371d9c178a0ddcde38fc09d1e0" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a9a646025a54886209c0568078c3b00f677e7c371d9c178a0ddcde38fc09d1e0", 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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "a9a646025a54886209c0568078c3b00f677e7c371d9c178a0ddcde38fc09d1e0" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
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[INFO] [stderr]    Compiling crossbeam-utils v0.8.23
[INFO] [stderr]    Compiling memchr v2.5.0
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[INFO] [stderr]    Compiling hashbrown v0.12.3
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[INFO] [stderr]    Compiling smallvec v1.10.0
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling rustc_version v0.4.1
[INFO] [stderr]    Compiling mio v0.8.5
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[INFO] [stderr]    Compiling rayon-core v1.10.1
[INFO] [stderr]    Compiling cl-sys v0.4.3
[INFO] [stderr]    Compiling ocl-core v0.11.5
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[INFO] [stderr]    Compiling crossbeam-queue v0.3.14
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[INFO] [stderr]    Compiling signal-hook-mio v0.2.3
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[INFO] [stderr]    Compiling ocl-core-vector v0.1.1
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[INFO] [stderr]    Compiling fastrand v1.8.0
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling futures v0.1.31
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[INFO] [stderr]    Compiling either v1.8.0
[INFO] [stderr]    Compiling rayon v1.6.1
[INFO] [stderr]    Compiling tempfile v3.3.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling nix v0.26.1
[INFO] [stderr]    Compiling unicode-linebreak v0.1.4
[INFO] [stderr]    Compiling qutex v0.2.6
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling shell-words v1.1.0
[INFO] [stderr]    Compiling nodrop v0.1.14
[INFO] [stderr]    Compiling colored v2.0.0
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[INFO] [stderr]    Compiling ctrlc v3.2.4
[INFO] [stderr]    Compiling textwrap v0.15.2
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[INFO] [stderr]    Compiling requestty v0.5.0
[INFO] [stderr]    Compiling sysinfo v0.27.6
[INFO] [stderr]    Compiling ocl v0.19.7
[INFO] [stderr]    Compiling benchmark v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::ops::Add`
[INFO] [stdout]  --> src/stressors.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::Add;
[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 imports: `Display` and `Formatter`
[INFO] [stdout]  --> src/components.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::{Display, Formatter};
[INFO] [stdout]   |                ^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ocl::core::DeviceInfo`
[INFO] [stdout]  --> src/components.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use ocl::core::DeviceInfo;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `CpuExt`, `SystemExt`, and `System`
[INFO] [stdout]  --> src/components.rs:4:15
[INFO] [stdout]   |
[INFO] [stdout] 4 | use sysinfo::{CpuExt, System, SystemExt};
[INFO] [stdout]   |               ^^^^^^  ^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let mut gpu_device: Option<Device> = None;
[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: unused variable: `gpu_device`
[INFO] [stdout]   --> src/main.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let mut gpu_device: Option<Device> = None;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_gpu_device`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `gpu_name`
[INFO] [stdout]    --> src/main.rs:159:17
[INFO] [stdout]     |
[INFO] [stdout] 159 |             let gpu_name = &answers.get("gpu_select")
[INFO] [stdout]     |                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_gpu_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `gpu_ctx` is never read
[INFO] [stdout]    --> src/main.rs:21:46
[INFO] [stdout]     |
[INFO] [stdout]  21 |     let mut gpu_ctx: Option<OpenCLContext> = None;
[INFO] [stdout]     |                                              ^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 166 |             gpu_ctx = Some(OpenCLContext::new(Device::first(Platform::default()).unwrap()).unwrap());
[INFO] [stdout]     |             ------- `gpu_ctx` is overwritten here before the previous value is read
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_system_gpus` is never used
[INFO] [stdout]  --> src/components.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn get_system_gpus() -> Vec<Device> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 1m 13s
[INFO] running `Command { std: "docker" "inspect" "a9a646025a54886209c0568078c3b00f677e7c371d9c178a0ddcde38fc09d1e0", 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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "a9a646025a54886209c0568078c3b00f677e7c371d9c178a0ddcde38fc09d1e0" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "test" "--frozen" "--no-run" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling benchmark v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::ops::Add`
[INFO] [stdout]  --> src/stressors.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::Add;
[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 imports: `Display` and `Formatter`
[INFO] [stdout]  --> src/components.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::{Display, Formatter};
[INFO] [stdout]   |                ^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ocl::core::DeviceInfo`
[INFO] [stdout]  --> src/components.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use ocl::core::DeviceInfo;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `CpuExt`, `SystemExt`, and `System`
[INFO] [stdout]  --> src/components.rs:4:15
[INFO] [stdout]   |
[INFO] [stdout] 4 | use sysinfo::{CpuExt, System, SystemExt};
[INFO] [stdout]   |               ^^^^^^  ^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let mut gpu_device: Option<Device> = None;
[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: unused variable: `gpu_device`
[INFO] [stdout]   --> src/main.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let mut gpu_device: Option<Device> = None;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_gpu_device`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `gpu_name`
[INFO] [stdout]    --> src/main.rs:159:17
[INFO] [stdout]     |
[INFO] [stdout] 159 |             let gpu_name = &answers.get("gpu_select")
[INFO] [stdout]     |                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_gpu_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `gpu_ctx` is never read
[INFO] [stdout]    --> src/main.rs:21:46
[INFO] [stdout]     |
[INFO] [stdout]  21 |     let mut gpu_ctx: Option<OpenCLContext> = None;
[INFO] [stdout]     |                                              ^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 166 |             gpu_ctx = Some(OpenCLContext::new(Device::first(Platform::default()).unwrap()).unwrap());
[INFO] [stdout]     |             ------- `gpu_ctx` is overwritten here before the previous value is read
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_system_gpus` is never used
[INFO] [stdout]  --> src/components.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn get_system_gpus() -> Vec<Device> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.50s
[INFO] running `Command { std: "docker" "inspect" "a9a646025a54886209c0568078c3b00f677e7c371d9c178a0ddcde38fc09d1e0", 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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "a9a646025a54886209c0568078c3b00f677e7c371d9c178a0ddcde38fc09d1e0" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "test" "--frozen" "--release", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::ops::Add`
[INFO] [stderr]  --> src/stressors.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::ops::Add;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Display` and `Formatter`
[INFO] [stderr]  --> src/components.rs:1:16
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::fmt::{Display, Formatter};
[INFO] [stderr]   |                ^^^^^^^  ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ocl::core::DeviceInfo`
[INFO] [stderr]  --> src/components.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use ocl::core::DeviceInfo;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `CpuExt`, `SystemExt`, and `System`
[INFO] [stderr]  --> src/components.rs:4:15
[INFO] [stderr]   |
[INFO] [stderr] 4 | use sysinfo::{CpuExt, System, SystemExt};
[INFO] [stderr]   |               ^^^^^^  ^^^^^^  ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |     let mut gpu_device: Option<Device> = None;
[INFO] [stderr]    |         ----^^^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `gpu_device`
[INFO] [stderr]   --> src/main.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |     let mut gpu_device: Option<Device> = None;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_gpu_device`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `gpu_name`
[INFO] [stderr]    --> src/main.rs:159:17
[INFO] [stderr]     |
[INFO] [stderr] 159 |             let gpu_name = &answers.get("gpu_select")
[INFO] [stderr]     |                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_gpu_name`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `gpu_ctx` is never read
[INFO] [stderr]    --> src/main.rs:21:46
[INFO] [stderr]     |
[INFO] [stderr]  21 |     let mut gpu_ctx: Option<OpenCLContext> = None;
[INFO] [stderr]     |                                              ^^^^ this value is reassigned later and never used
[INFO] [stderr] ...
[INFO] [stderr] 166 |             gpu_ctx = Some(OpenCLContext::new(Device::first(Platform::default()).unwrap()).unwrap());
[INFO] [stderr]     |             ------- `gpu_ctx` is overwritten here before the previous value is read
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `get_system_gpus` is never used
[INFO] [stderr]  --> src/components.rs:6:8
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn get_system_gpus() -> Vec<Device> {
[INFO] [stderr]   |        ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `benchmark` (bin "benchmark" test) generated 9 warnings (run `cargo fix --bin "benchmark" -p benchmark --tests` to apply 7 suggestions)
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.13s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/release/deps/benchmark-35e75005b8c9ddac)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a9a646025a54886209c0568078c3b00f677e7c371d9c178a0ddcde38fc09d1e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9a646025a54886209c0568078c3b00f677e7c371d9c178a0ddcde38fc09d1e0", kill_on_drop: false }`
[INFO] [stdout] a9a646025a54886209c0568078c3b00f677e7c371d9c178a0ddcde38fc09d1e0
