[INFO] cloning repository https://github.com/vigoo/red
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vigoo/red" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvigoo%2Fred", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvigoo%2Fred'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c713221efd2aceb424d9a85247db2cb0f0c4a45c
[INFO] testing vigoo/red against try#ce59db7a1b1b012fb2793c4641c1bdecad7a128b for pr-85530
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvigoo%2Fred" "/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/vigoo/red on toolchain ce59db7a1b1b012fb2793c4641c1bdecad7a128b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/vigoo/red
[INFO] finished tweaking git repo https://github.com/vigoo/red
[INFO] tweaked toml for git repo https://github.com/vigoo/red written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/vigoo/red already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded crossterm_style v0.3.1
[INFO] [stderr]   Downloaded crossterm_input v0.3.3
[INFO] [stderr]   Downloaded crossterm_screen v0.2.1
[INFO] [stderr]   Downloaded crossterm_terminal v0.2.2
[INFO] [stderr]   Downloaded crossterm_utils v0.2.1
[INFO] [stderr]   Downloaded crossterm_winapi v0.1.2
[INFO] [stderr]   Downloaded crossterm v0.9.3
[INFO] [stderr]   Downloaded crossterm_cursor v0.2.1
[INFO] [stderr]   Downloaded riker-patterns v0.3.2
[INFO] [stderr]   Downloaded riker-macros v0.1.0
[INFO] [stderr]   Downloaded riker v0.3.2
[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" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 58cab1a23244bc33dd3f1888ae31946386a23f29bdcecf2bb0ae5bc742453074
[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" "58cab1a23244bc33dd3f1888ae31946386a23f29bdcecf2bb0ae5bc742453074", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "58cab1a23244bc33dd3f1888ae31946386a23f29bdcecf2bb0ae5bc742453074", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58cab1a23244bc33dd3f1888ae31946386a23f29bdcecf2bb0ae5bc742453074", kill_on_drop: false }`
[INFO] [stdout] 58cab1a23244bc33dd3f1888ae31946386a23f29bdcecf2bb0ae5bc742453074
[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" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 422562e62f0b4710f9280cbf78abcd44cc8ba3226f2259b6010b7e5d6c6d98ad
[INFO] running `Command { std: "docker" "start" "-a" "422562e62f0b4710f9280cbf78abcd44cc8ba3226f2259b6010b7e5d6c6d98ad", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-core-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling serde v0.8.23
[INFO] [stderr]    Compiling regex-syntax v0.6.12
[INFO] [stderr]    Compiling futures-io-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling pin-utils v0.1.0-alpha.4
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling lazy_static v0.2.11
[INFO] [stderr]    Compiling linked-hash-map v0.5.2
[INFO] [stderr]    Compiling ucd-util v0.1.5
[INFO] [stderr]    Compiling rust-ini v0.13.0
[INFO] [stderr]    Compiling quick-error v1.2.2
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling crossterm_utils v0.2.1
[INFO] [stderr]    Compiling num_cpus v1.10.1
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling toml v0.4.10
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]    Compiling regex-syntax v0.5.6
[INFO] [stderr]    Compiling futures-sink-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling crossterm_cursor v0.2.1
[INFO] [stderr]    Compiling crossterm_screen v0.2.1
[INFO] [stderr]    Compiling crossterm_style v0.3.1
[INFO] [stderr]    Compiling yaml-rust v0.4.3
[INFO] [stderr]    Compiling futures-channel-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling crossterm_input v0.3.3
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling crossterm_terminal v0.2.2
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling futures-util-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling crossterm v0.9.3
[INFO] [stderr]    Compiling rut v0.1.0 (/opt/rustwide/workdir/rut)
[INFO] [stderr]    Compiling uuid v0.6.5
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling chrono v0.4.9
[INFO] [stderr]    Compiling serde_test v0.8.23
[INFO] [stderr]    Compiling linked-hash-map v0.3.0
[INFO] [stderr]    Compiling futures-executor-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling regex v1.3.1
[INFO] [stderr]    Compiling futures-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling serde-hjson v0.8.2
[INFO] [stderr]    Compiling config v0.9.3
[INFO] [stderr]    Compiling riker-macros v0.1.0
[INFO] [stderr]    Compiling riker v0.3.2
[INFO] [stderr]    Compiling riker-patterns v0.3.2
[INFO] [stderr]    Compiling red v0.1.0 (/opt/rustwide/workdir/red)
[INFO] [stdout] warning: unused import: `std::collections::HashSet`
[INFO] [stdout]  --> red/src/input.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::collections::HashSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]   --> red/src/main.rs:66:9
[INFO] [stdout]    |
[INFO] [stdout] 66 |     let result = block_on(handle);
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ch`
[INFO] [stdout]    --> red/src/buffer.rs:148:30
[INFO] [stdout]     |
[INFO] [stdout] 148 |     pub fn insert(&mut self, ch: char) {
[INFO] [stdout]     |                              ^^ help: if this is intentional, prefix it with an underscore: `_ch`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `characters`
[INFO] [stdout]   --> red/src/buffer.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     characters: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `iter`
[INFO] [stdout]   --> red/src/buffer.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn iter<'a>(&'a self) -> EnrichedSegmentIter<'a> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `segments`
[INFO] [stdout]   --> red/src/buffer.rs:72:5
[INFO] [stdout]    |
[INFO] [stdout] 72 |     segments: Vec<EnrichedSegment> // TODO: better data structure for this
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `iter`
[INFO] [stdout]   --> red/src/buffer.rs:90:12
[INFO] [stdout]    |
[INFO] [stdout] 90 |     pub fn iter<'a>(&'a self) -> impl Iterator<Item = BufferRenderEvent> + 'a {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `find_col`
[INFO] [stdout]   --> red/src/buffer.rs:94:12
[INFO] [stdout]    |
[INFO] [stdout] 94 |     pub fn find_col(&self, col: u32) -> Option<(usize, usize)> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get`
[INFO] [stdout]    --> red/src/buffer.rs:115:12
[INFO] [stdout]     |
[INFO] [stdout] 115 |     pub fn get(&self, col: u32) -> Option<char> {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `row`
[INFO] [stdout]    --> red/src/buffer.rs:125:5
[INFO] [stdout]     |
[INFO] [stdout] 125 |     row: u32,
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `col`
[INFO] [stdout]    --> red/src/buffer.rs:126:5
[INFO] [stdout]     |
[INFO] [stdout] 126 |     col: u32
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_buffer`
[INFO] [stdout]   --> red/src/state.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn add_buffer(&mut self, new_buffer: Buffer) {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `render_status_area`
[INFO] [stdout]   --> red/src/main.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn render_status_area(console: &mut Crossterm) -> Result<()> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `render_buffer`
[INFO] [stdout]   --> red/src/main.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn render_buffer(console: &mut Crossterm, buffer: &Buffer, view: &BufferView) -> Result<()> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> red/src/input.rs:68:41
[INFO] [stdout]    |
[INFO] [stdout] 68 | ...                   actor.try_tell(true, None);
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 36s
[INFO] running `Command { std: "docker" "inspect" "422562e62f0b4710f9280cbf78abcd44cc8ba3226f2259b6010b7e5d6c6d98ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "422562e62f0b4710f9280cbf78abcd44cc8ba3226f2259b6010b7e5d6c6d98ad", kill_on_drop: false }`
[INFO] [stdout] 422562e62f0b4710f9280cbf78abcd44cc8ba3226f2259b6010b7e5d6c6d98ad
[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" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c94af1b5d2dcf9ae5830fc18be49ed2494f0073cea369c0883642700016e1f5c
[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" "c94af1b5d2dcf9ae5830fc18be49ed2494f0073cea369c0883642700016e1f5c", kill_on_drop: false }`
[INFO] [stderr]    Compiling rut v0.1.0 (/opt/rustwide/workdir/rut)
[INFO] [stderr]    Compiling red v0.1.0 (/opt/rustwide/workdir/red)
[INFO] [stdout] warning: unused import: `std::collections::HashSet`
[INFO] [stdout]  --> red/src/input.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::collections::HashSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]   --> red/src/main.rs:66:9
[INFO] [stdout]    |
[INFO] [stdout] 66 |     let result = block_on(handle);
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ch`
[INFO] [stdout]    --> red/src/buffer.rs:148:30
[INFO] [stdout]     |
[INFO] [stdout] 148 |     pub fn insert(&mut self, ch: char) {
[INFO] [stdout]     |                              ^^ help: if this is intentional, prefix it with an underscore: `_ch`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `characters`
[INFO] [stdout]   --> red/src/buffer.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     characters: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `iter`
[INFO] [stdout]   --> red/src/buffer.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn iter<'a>(&'a self) -> EnrichedSegmentIter<'a> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `segments`
[INFO] [stdout]   --> red/src/buffer.rs:72:5
[INFO] [stdout]    |
[INFO] [stdout] 72 |     segments: Vec<EnrichedSegment> // TODO: better data structure for this
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `iter`
[INFO] [stdout]   --> red/src/buffer.rs:90:12
[INFO] [stdout]    |
[INFO] [stdout] 90 |     pub fn iter<'a>(&'a self) -> impl Iterator<Item = BufferRenderEvent> + 'a {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `find_col`
[INFO] [stdout]   --> red/src/buffer.rs:94:12
[INFO] [stdout]    |
[INFO] [stdout] 94 |     pub fn find_col(&self, col: u32) -> Option<(usize, usize)> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get`
[INFO] [stdout]    --> red/src/buffer.rs:115:12
[INFO] [stdout]     |
[INFO] [stdout] 115 |     pub fn get(&self, col: u32) -> Option<char> {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `row`
[INFO] [stdout]    --> red/src/buffer.rs:125:5
[INFO] [stdout]     |
[INFO] [stdout] 125 |     row: u32,
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `col`
[INFO] [stdout]    --> red/src/buffer.rs:126:5
[INFO] [stdout]     |
[INFO] [stdout] 126 |     col: u32
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_buffer`
[INFO] [stdout]   --> red/src/state.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn add_buffer(&mut self, new_buffer: Buffer) {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `render_status_area`
[INFO] [stdout]   --> red/src/main.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn render_status_area(console: &mut Crossterm) -> Result<()> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `render_buffer`
[INFO] [stdout]   --> red/src/main.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn render_buffer(console: &mut Crossterm, buffer: &Buffer, view: &BufferView) -> Result<()> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> red/src/input.rs:68:41
[INFO] [stdout]    |
[INFO] [stdout] 68 | ...                   actor.try_tell(true, None);
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.39s
[INFO] running `Command { std: "docker" "inspect" "c94af1b5d2dcf9ae5830fc18be49ed2494f0073cea369c0883642700016e1f5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c94af1b5d2dcf9ae5830fc18be49ed2494f0073cea369c0883642700016e1f5c", kill_on_drop: false }`
[INFO] [stdout] c94af1b5d2dcf9ae5830fc18be49ed2494f0073cea369c0883642700016e1f5c
[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" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8485a9c6f62e4b43f519f760d5748d130615bfe7183c28f8740845227bb214c3
[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" "8485a9c6f62e4b43f519f760d5748d130615bfe7183c28f8740845227bb214c3", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::collections::HashSet`
[INFO] [stderr]  --> red/src/input.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::collections::HashSet;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `result`
[INFO] [stderr]   --> red/src/main.rs:66:9
[INFO] [stderr]    |
[INFO] [stderr] 66 |     let result = block_on(handle);
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ch`
[INFO] [stderr]    --> red/src/buffer.rs:148:30
[INFO] [stderr]     |
[INFO] [stderr] 148 |     pub fn insert(&mut self, ch: char) {
[INFO] [stderr]     |                              ^^ help: if this is intentional, prefix it with an underscore: `_ch`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `characters`
[INFO] [stderr]   --> red/src/buffer.rs:31:5
[INFO] [stderr]    |
[INFO] [stderr] 31 |     characters: String,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `iter`
[INFO] [stderr]   --> red/src/buffer.rs:36:8
[INFO] [stderr]    |
[INFO] [stderr] 36 |     fn iter<'a>(&'a self) -> EnrichedSegmentIter<'a> {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `segments`
[INFO] [stderr]   --> red/src/buffer.rs:72:5
[INFO] [stderr]    |
[INFO] [stderr] 72 |     segments: Vec<EnrichedSegment> // TODO: better data structure for this
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `iter`
[INFO] [stderr]   --> red/src/buffer.rs:90:12
[INFO] [stderr]    |
[INFO] [stderr] 90 |     pub fn iter<'a>(&'a self) -> impl Iterator<Item = BufferRenderEvent> + 'a {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `find_col`
[INFO] [stderr]   --> red/src/buffer.rs:94:12
[INFO] [stderr]    |
[INFO] [stderr] 94 |     pub fn find_col(&self, col: u32) -> Option<(usize, usize)> {
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get`
[INFO] [stderr]    --> red/src/buffer.rs:115:12
[INFO] [stderr]     |
[INFO] [stderr] 115 |     pub fn get(&self, col: u32) -> Option<char> {
[INFO] [stderr]     |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `row`
[INFO] [stderr]    --> red/src/buffer.rs:125:5
[INFO] [stderr]     |
[INFO] [stderr] 125 |     row: u32,
[INFO] [stderr]     |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `col`
[INFO] [stderr]    --> red/src/buffer.rs:126:5
[INFO] [stderr]     |
[INFO] [stderr] 126 |     col: u32
[INFO] [stderr]     |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `add_buffer`
[INFO] [stderr]   --> red/src/state.rs:41:8
[INFO] [stderr]    |
[INFO] [stderr] 41 |     fn add_buffer(&mut self, new_buffer: Buffer) {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `render_status_area`
[INFO] [stderr]   --> red/src/main.rs:20:4
[INFO] [stderr]    |
[INFO] [stderr] 20 | fn render_status_area(console: &mut Crossterm) -> Result<()> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `render_buffer`
[INFO] [stderr]   --> red/src/main.rs:28:4
[INFO] [stderr]    |
[INFO] [stderr] 28 | fn render_buffer(console: &mut Crossterm, buffer: &Buffer, view: &BufferView) -> Result<()> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> red/src/input.rs:68:41
[INFO] [stderr]    |
[INFO] [stderr] 68 | ...                   actor.try_tell(true, None);
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 15 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/red-93114dcbc3e19636)
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rut-dc15e264fa82d1c7)
[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] [stderr]    Doc-tests rut
[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] [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" "8485a9c6f62e4b43f519f760d5748d130615bfe7183c28f8740845227bb214c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8485a9c6f62e4b43f519f760d5748d130615bfe7183c28f8740845227bb214c3", kill_on_drop: false }`
[INFO] [stdout] 8485a9c6f62e4b43f519f760d5748d130615bfe7183c28f8740845227bb214c3