[INFO] cloning repository https://github.com/ngynkvn/mqtt-lights
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ngynkvn/mqtt-lights" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fngynkvn%2Fmqtt-lights", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fngynkvn%2Fmqtt-lights'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fcddac48cd3ba2f645ca4e92c5e982597c6c5a0d
[INFO] checking ngynkvn/mqtt-lights against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fngynkvn%2Fmqtt-lights" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ngynkvn/mqtt-lights
[INFO] finished tweaking git repo https://github.com/ngynkvn/mqtt-lights
[INFO] tweaked toml for git repo https://github.com/ngynkvn/mqtt-lights written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ngynkvn/mqtt-lights on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ngynkvn/mqtt-lights 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c3ec3ce062bb072c1112f842d61915157b2b81929087b35d8c131d5e25ad4fdb
[INFO] running `Command { std: "docker" "start" "-a" "c3ec3ce062bb072c1112f842d61915157b2b81929087b35d8c131d5e25ad4fdb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c3ec3ce062bb072c1112f842d61915157b2b81929087b35d8c131d5e25ad4fdb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3ec3ce062bb072c1112f842d61915157b2b81929087b35d8c131d5e25ad4fdb", kill_on_drop: false }`
[INFO] [stdout] c3ec3ce062bb072c1112f842d61915157b2b81929087b35d8c131d5e25ad4fdb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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 -Dunmustuse_in_always_ok" "-e" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1fe6ba13c9bcf4775bf55558eb24d5a8bafa7a64196bef8c89ae52ff0edb760f
[INFO] running `Command { std: "docker" "start" "-a" "1fe6ba13c9bcf4775bf55558eb24d5a8bafa7a64196bef8c89ae52ff0edb760f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling log v0.4.14
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[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]     Checking instant v0.1.9
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[INFO] [stderr]     Checking pin-project-lite v0.2.6
[INFO] [stderr]     Checking tracing-core v0.1.19
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]     Checking sharded-slab v0.1.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]     Checking lock_api v0.4.4
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling serde_derive v1.0.129
[INFO] [stderr]    Compiling cc v1.0.69
[INFO] [stderr]     Checking thread_local v1.1.3
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling futures-core v0.3.16
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[INFO] [stderr]    Compiling proc-macro-error v1.0.4
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[INFO] [stderr]    Compiling serde v1.0.129
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[INFO] [stderr]     Checking env_logger v0.7.1
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[INFO] [stderr]    Compiling tracing-attributes v0.1.15
[INFO] [stderr]    Compiling async-stream-impl v0.3.2
[INFO] [stderr]    Compiling clap_derive v3.0.0-beta.2
[INFO] [stderr]    Compiling tokio-macros v1.2.0
[INFO] [stderr]     Checking async-stream v0.3.2
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[INFO] [stderr]     Checking lightshow v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `generic_associated_types` has been stable since 1.65.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(generic_associated_types)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `generic_associated_types` has been stable since 1.65.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(generic_associated_types)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lightshow` (bin "lightshow") due to 1 previous error; 10 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: fields `addr`, `is_on`, and `tx` are never read
[INFO] [stdout]   --> src/main.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub struct Session {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 31 |     addr: SocketAddr,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 32 |     is_on: bool,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 33 |     tx: Sender<[u8; 1024]>,
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Session` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/main.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | impl Session {
[INFO] [stdout]    | ------------ associated function in this implementation
[INFO] [stdout] 37 |     fn new(addr: SocketAddr, tx: Sender<[u8; 1024]>) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `count` is never read
[INFO] [stdout]   --> src/main.rs:59:5
[INFO] [stdout]    |
[INFO] [stdout] 50 | struct Args {
[INFO] [stdout]    |        ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 59 |     count: u8,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Args` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `stream` and `addr` are never read
[INFO] [stdout]   --> src/main.rs:78:5
[INFO] [stdout]    |
[INFO] [stdout] 77 | pub struct Client {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] 78 |     stream: TcpStream,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 79 |     addr: SocketAddr,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Client` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `DrawHandler` is never used
[INFO] [stdout]   --> src/frontend.rs:21:7
[INFO] [stdout]    |
[INFO] [stdout] 21 | trait DrawHandler {
[INFO] [stdout]    |       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `State` is never used
[INFO] [stdout]   --> src/frontend.rs:25:6
[INFO] [stdout]    |
[INFO] [stdout] 25 | type State = HashMap<SocketAddr, Session>;
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `UiState` is never constructed
[INFO] [stdout]   --> src/frontend.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct UiState {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `layout` are never used
[INFO] [stdout]   --> src/frontend.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | impl UiState {
[INFO] [stdout]    | ------------ associated items in this implementation
[INFO] [stdout] 33 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |     fn layout(&self) -> &Layout {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `tui_worker` is never used
[INFO] [stdout]   --> src/frontend.rs:88:14
[INFO] [stdout]    |
[INFO] [stdout] 88 | pub async fn tui_worker(
[INFO] [stdout]    |              ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 51 | /     /// External IP to host on
[INFO] [stdout] 52 | |     external: String,
[INFO] [stdout]    | |____________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `addr`, `is_on`, and `tx` are never read
[INFO] [stdout]   --> src/main.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub struct Session {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 31 |     addr: SocketAddr,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 32 |     is_on: bool,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 33 |     tx: Sender<[u8; 1024]>,
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Session` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/main.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | impl Session {
[INFO] [stdout]    | ------------ associated function in this implementation
[INFO] [stdout] 37 |     fn new(addr: SocketAddr, tx: Sender<[u8; 1024]>) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `count` is never read
[INFO] [stdout]   --> src/main.rs:59:5
[INFO] [stdout]    |
[INFO] [stdout] 50 | struct Args {
[INFO] [stdout]    |        ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 59 |     count: u8,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Args` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `stream` and `addr` are never read
[INFO] [stdout]   --> src/main.rs:78:5
[INFO] [stdout]    |
[INFO] [stdout] 77 | pub struct Client {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] 78 |     stream: TcpStream,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 79 |     addr: SocketAddr,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Client` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `DrawHandler` is never used
[INFO] [stdout]   --> src/frontend.rs:21:7
[INFO] [stdout]    |
[INFO] [stdout] 21 | trait DrawHandler {
[INFO] [stdout]    |       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `State` is never used
[INFO] [stdout]   --> src/frontend.rs:25:6
[INFO] [stdout]    |
[INFO] [stdout] 25 | type State = HashMap<SocketAddr, Session>;
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `UiState` is never constructed
[INFO] [stdout]   --> src/frontend.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct UiState {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `layout` are never used
[INFO] [stdout]   --> src/frontend.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | impl UiState {
[INFO] [stdout]    | ------------ associated items in this implementation
[INFO] [stdout] 33 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |     fn layout(&self) -> &Layout {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `tui_worker` is never used
[INFO] [stdout]   --> src/frontend.rs:88:14
[INFO] [stdout]    |
[INFO] [stdout] 88 | pub async fn tui_worker(
[INFO] [stdout]    |              ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 51 | /     /// External IP to host on
[INFO] [stdout] 52 | |     external: String,
[INFO] [stdout]    | |____________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lightshow` (bin "lightshow" test) due to 1 previous error; 10 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "1fe6ba13c9bcf4775bf55558eb24d5a8bafa7a64196bef8c89ae52ff0edb760f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1fe6ba13c9bcf4775bf55558eb24d5a8bafa7a64196bef8c89ae52ff0edb760f", kill_on_drop: false }`
[INFO] [stdout] 1fe6ba13c9bcf4775bf55558eb24d5a8bafa7a64196bef8c89ae52ff0edb760f
