[INFO] cloning repository https://github.com/krissemicolon/atlas
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/krissemicolon/atlas" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkrissemicolon%2Fatlas", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkrissemicolon%2Fatlas'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c81361de0902d0085efbfc57c0133ad58dd41e53
[INFO] checking krissemicolon/atlas/c81361de0902d0085efbfc57c0133ad58dd41e53 against 4fcf39725a9c99bd495d8c73af83628a256ff9a9 for pr-162233-crater-rollup
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkrissemicolon%2Fatlas" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/krissemicolon/atlas
[INFO] finished tweaking git repo https://github.com/krissemicolon/atlas
[INFO] tweaked toml for git repo https://github.com/krissemicolon/atlas written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/krissemicolon/atlas on toolchain 4fcf39725a9c99bd495d8c73af83628a256ff9a9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4fcf39725a9c99bd495d8c73af83628a256ff9a9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4fcf39725a9c99bd495d8c73af83628a256ff9a9" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 51 packages to highest compatible versions
[INFO] [stderr]       Adding rand v0.8.8 (available: v0.10.2)
[INFO] [stderr]       Adding termion v1.5.6 (available: v4.0.6)
[INFO] [stderr]       Adding time v0.1.45 (available: v0.3.55)
[INFO] [stderr]       Adding tui v0.16.0 (available: v0.19.0)
[INFO] [stderr]       Adding wasi v0.10.0+wasi-snapshot-preview1 (available: v0.10.2+wasi-snapshot-preview1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4fcf39725a9c99bd495d8c73af83628a256ff9a9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: Cargo.toml: unused manifest key: build
[INFO] [stderr] help: build is a valid .cargo/config.toml key
[INFO] [stderr] warning: `atlas` (manifest) generated 1 warning
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded redox_termios v0.1.3
[INFO] [stderr]   Downloaded curl v0.4.50
[INFO] [stderr]   Downloaded socket v0.0.7
[INFO] [stderr]   Downloaded curl-sys v0.4.90+curl-8.21.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 7f8243c1f04d96cc0244de2dc8f50fd08d0e8d4cec792f2d17dc839b7c1d9618
[INFO] running `Command { std: "docker" "start" "7f8243c1f04d96cc0244de2dc8f50fd08d0e8d4cec792f2d17dc839b7c1d9618", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7f8243c1f04d96cc0244de2dc8f50fd08d0e8d4cec792f2d17dc839b7c1d9618", 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" "7f8243c1f04d96cc0244de2dc8f50fd08d0e8d4cec792f2d17dc839b7c1d9618" "/opt/rustwide/cargo-home/bin/cargo" "+4fcf39725a9c99bd495d8c73af83628a256ff9a9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7f8243c1f04d96cc0244de2dc8f50fd08d0e8d4cec792f2d17dc839b7c1d9618", 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" "7f8243c1f04d96cc0244de2dc8f50fd08d0e8d4cec792f2d17dc839b7c1d9618" "/opt/rustwide/cargo-home/bin/cargo" "+4fcf39725a9c99bd495d8c73af83628a256ff9a9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] warning: Cargo.toml: unused manifest key: build
[INFO] [stderr] help: build is a valid .cargo/config.toml key
[INFO] [stderr] warning: `atlas` (manifest) generated 1 warning
[INFO] [stderr]    Compiling find-msvc-tools v0.1.12
[INFO] [stderr]     Checking numtoa v0.1.0
[INFO] [stderr]    Compiling curl v0.4.50
[INFO] [stderr]     Checking socket2 v0.6.5
[INFO] [stderr]     Checking time v0.1.45
[INFO] [stderr]     Checking num-integer v0.1.47
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking termion v1.5.6
[INFO] [stderr]     Checking rand v0.8.8
[INFO] [stderr]    Compiling cc v1.4.5
[INFO] [stderr]     Checking num-bigint v0.4.8
[INFO] [stderr]     Checking num-iter v0.1.46
[INFO] [stderr]     Checking tui v0.16.0
[INFO] [stderr]    Compiling openssl-sys v0.9.117
[INFO] [stderr]    Compiling libz-sys v1.1.29
[INFO] [stderr]    Compiling curl-sys v0.4.90+curl-8.21.0
[INFO] [stderr]     Checking num-rational v0.4.2
[INFO] [stderr]     Checking num v0.4.3
[INFO] [stderr]     Checking socket v0.0.7
[INFO] [stderr]     Checking atlas v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io;
[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: `SocketAddr` and `ToSocketAddrs`
[INFO] [stdout]  --> src/main.rs:3:16
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::net::{SocketAddr, ToSocketAddrs};
[INFO] [stdout]   |                ^^^^^^^^^^  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tui::style::Color`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use tui::style::Color;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tui::widgets::canvas::*`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use tui::widgets::canvas::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Write` and `stdout`
[INFO] [stdout]  --> src/api.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{stdout, Write};
[INFO] [stdout]   |               ^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io;
[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: `SocketAddr` and `ToSocketAddrs`
[INFO] [stdout]  --> src/main.rs:3:16
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::net::{SocketAddr, ToSocketAddrs};
[INFO] [stdout]   |                ^^^^^^^^^^  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tui::style::Color`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use tui::style::Color;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tui::widgets::canvas::*`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use tui::widgets::canvas::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Write` and `stdout`
[INFO] [stdout]  --> src/api.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{stdout, Write};
[INFO] [stdout]   |               ^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `draw_dot` is never used
[INFO] [stdout]   --> src/ui.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl TUI {
[INFO] [stdout]    | -------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 38 |     pub fn draw_dot(&mut self, lat: &f64, lon: &f64, color: &Color) -> Result<(), std::io::Error> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `ttl` and `rtt` are never read
[INFO] [stdout]   --> src/tracer.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct TraceHop {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 27 |     /// The Time-To-Live value used to find this hop
[INFO] [stdout] 28 |     pub ttl: u8,
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 32 |     pub rtt: Duration,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TraceHop` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `1` is never read
[INFO] [stdout]    --> src/tracer.rs:172:27
[INFO] [stdout]     |
[INFO] [stdout] 172 |     EchoReply(IcmpHeader, &'a [u8]),
[INFO] [stdout]     |     ---------             ^^^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 172 -     EchoReply(IcmpHeader, &'a [u8]),
[INFO] [stdout] 172 +     EchoReply(IcmpHeader, ()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/tracer.rs:173:18
[INFO] [stdout]     |
[INFO] [stdout] 173 |     TimeExceeded(IcmpHeader, &'a [u8]),
[INFO] [stdout]     |     ------------ ^^^^^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 173 -     TimeExceeded(IcmpHeader, &'a [u8]),
[INFO] [stdout] 173 +     TimeExceeded((), &'a [u8]),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/tracer.rs:174:13
[INFO] [stdout]     |
[INFO] [stdout] 174 |     Unknown(IcmpHeader),
[INFO] [stdout]     |     ------- ^^^^^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 174 -     Unknown(IcmpHeader),
[INFO] [stdout] 174 +     Unknown(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `code` and `checksum` are never read
[INFO] [stdout]    --> src/tracer.rs:203:9
[INFO] [stdout]     |
[INFO] [stdout] 201 | struct IcmpHeader {
[INFO] [stdout]     |        ---------- fields in this struct
[INFO] [stdout] 202 |     pub msg_type: u8,
[INFO] [stdout] 203 |     pub code: u8,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout] 204 |     pub checksum: u16,
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `IcmpHeader` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `draw_dot` is never used
[INFO] [stdout]   --> src/ui.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl TUI {
[INFO] [stdout]    | -------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 38 |     pub fn draw_dot(&mut self, lat: &f64, lon: &f64, color: &Color) -> Result<(), std::io::Error> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `ttl` and `rtt` are never read
[INFO] [stdout]   --> src/tracer.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct TraceHop {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 27 |     /// The Time-To-Live value used to find this hop
[INFO] [stdout] 28 |     pub ttl: u8,
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 32 |     pub rtt: Duration,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TraceHop` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `1` is never read
[INFO] [stdout]    --> src/tracer.rs:172:27
[INFO] [stdout]     |
[INFO] [stdout] 172 |     EchoReply(IcmpHeader, &'a [u8]),
[INFO] [stdout]     |     ---------             ^^^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 172 -     EchoReply(IcmpHeader, &'a [u8]),
[INFO] [stdout] 172 +     EchoReply(IcmpHeader, ()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/tracer.rs:173:18
[INFO] [stdout]     |
[INFO] [stdout] 173 |     TimeExceeded(IcmpHeader, &'a [u8]),
[INFO] [stdout]     |     ------------ ^^^^^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 173 -     TimeExceeded(IcmpHeader, &'a [u8]),
[INFO] [stdout] 173 +     TimeExceeded((), &'a [u8]),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/tracer.rs:174:13
[INFO] [stdout]     |
[INFO] [stdout] 174 |     Unknown(IcmpHeader),
[INFO] [stdout]     |     ------- ^^^^^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 174 -     Unknown(IcmpHeader),
[INFO] [stdout] 174 +     Unknown(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `code` and `checksum` are never read
[INFO] [stdout]    --> src/tracer.rs:203:9
[INFO] [stdout]     |
[INFO] [stdout] 201 | struct IcmpHeader {
[INFO] [stdout]     |        ---------- fields in this struct
[INFO] [stdout] 202 |     pub msg_type: u8,
[INFO] [stdout] 203 |     pub code: u8,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout] 204 |     pub checksum: u16,
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `IcmpHeader` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |     atlas_tui.draw_map();
[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] 27 |     let _ = atlas_tui.draw_map();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/api.rs:14:13
[INFO] [stdout]    |
[INFO] [stdout] 14 |             &cords.extend_from_slice(data);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 14 |             let _ = &cords.extend_from_slice(data);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |     atlas_tui.draw_map();
[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] 27 |     let _ = atlas_tui.draw_map();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/api.rs:14:13
[INFO] [stdout]    |
[INFO] [stdout] 14 |             &cords.extend_from_slice(data);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 14 |             let _ = &cords.extend_from_slice(data);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.90s
[INFO] running `Command { std: "docker" "inspect" "7f8243c1f04d96cc0244de2dc8f50fd08d0e8d4cec792f2d17dc839b7c1d9618", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f8243c1f04d96cc0244de2dc8f50fd08d0e8d4cec792f2d17dc839b7c1d9618", kill_on_drop: false }`
[INFO] [stdout] 7f8243c1f04d96cc0244de2dc8f50fd08d0e8d4cec792f2d17dc839b7c1d9618
