[INFO] cloning repository https://github.com/Niteblock/math-teaching
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Niteblock/math-teaching" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNiteblock%2Fmath-teaching", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNiteblock%2Fmath-teaching'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1e88122eb45cba37223d3ef941ab9e828efbbc35
[INFO] checking Niteblock/math-teaching against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNiteblock%2Fmath-teaching" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
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[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Niteblock/math-teaching
[INFO] finished tweaking git repo https://github.com/Niteblock/math-teaching
[INFO] tweaked toml for git repo https://github.com/Niteblock/math-teaching written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Niteblock/math-teaching on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Niteblock/math-teaching 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" "+1.95.0" "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-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 811abab1a5d25c9f4ae33bc6d617aef543f5aad64aaf82d7ea8a960f88ac71ee
[INFO] running `Command { std: "docker" "start" "-a" "811abab1a5d25c9f4ae33bc6d617aef543f5aad64aaf82d7ea8a960f88ac71ee", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "5f21d65d0b54e53d6beab7df6fb4851359c35327d65d42a178ae85a34455c1c5", kill_on_drop: false }`
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[INFO] [stdout] warning: unused variable: `ui`
[INFO] [stdout]   --> src/slide/example.rs:10:20
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn draw(&self, ui: Ui) {}
[INFO] [stdout]    |                    ^^ help: if this is intentional, prefix it with an underscore: `_ui`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Result` is never used
[INFO] [stdout]   --> src/main.rs:10:6
[INFO] [stdout]    |
[INFO] [stdout] 10 | type Result<T> = std::result::Result<T, Box<dyn std::error::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: enum `Error` is never used
[INFO] [stdout]  --> src/error.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub enum Error {
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Question` is never used
[INFO] [stdout]  --> src/question/mod.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub trait Question {
[INFO] [stdout]   |           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Slide` is never used
[INFO] [stdout]  --> src/slide/mod.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub trait Slide {
[INFO] [stdout]   |           ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ExampleSlide` is never constructed
[INFO] [stdout]  --> src/slide/example.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct ExampleSlide {}
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Topic` is never used
[INFO] [stdout]  --> src/topic/mod.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub trait Topic<T, U>
[INFO] [stdout]   |           ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MAX_SIZE` is never used
[INFO] [stdout]  --> src/utils/queue.rs:7:7
[INFO] [stdout]   |
[INFO] [stdout] 7 | const MAX_SIZE: usize = 100;
[INFO] [stdout]   |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `QueueError` is never used
[INFO] [stdout]   --> src/utils/queue.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub enum QueueError {
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Queue` is never constructed
[INFO] [stdout]   --> src/utils/queue.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub struct Queue<T> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `is_empty`, `is_full`, `enqueue`, and `dequeue` are never used
[INFO] [stdout]   --> src/utils/queue.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | / impl<T> Queue<T>
[INFO] [stdout] 37 | | where
[INFO] [stdout] 38 | |     T: Copy,
[INFO] [stdout]    | |____________- associated items in this implementation
[INFO] [stdout] 39 |   {
[INFO] [stdout] 40 |       fn new() -> Queue<T> {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |       fn is_empty(&self) -> bool {
[INFO] [stdout]    |          ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 52 |       fn is_full(&self) -> bool {
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 56 |       fn enqueue(&mut self, item: T) -> crate::Result<()> {
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 66 |       fn dequeue(&mut self) -> crate::Result<T> {
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ui`
[INFO] [stdout]   --> src/slide/example.rs:10:20
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn draw(&self, ui: Ui) {}
[INFO] [stdout]    |                    ^^ help: if this is intentional, prefix it with an underscore: `_ui`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Result` is never used
[INFO] [stdout]   --> src/main.rs:10:6
[INFO] [stdout]    |
[INFO] [stdout] 10 | type Result<T> = std::result::Result<T, Box<dyn std::error::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: enum `Error` is never used
[INFO] [stdout]  --> src/error.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub enum Error {
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Question` is never used
[INFO] [stdout]  --> src/question/mod.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub trait Question {
[INFO] [stdout]   |           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Slide` is never used
[INFO] [stdout]  --> src/slide/mod.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub trait Slide {
[INFO] [stdout]   |           ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ExampleSlide` is never constructed
[INFO] [stdout]  --> src/slide/example.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct ExampleSlide {}
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Topic` is never used
[INFO] [stdout]  --> src/topic/mod.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub trait Topic<T, U>
[INFO] [stdout]   |           ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MAX_SIZE` is never used
[INFO] [stdout]  --> src/utils/queue.rs:7:7
[INFO] [stdout]   |
[INFO] [stdout] 7 | const MAX_SIZE: usize = 100;
[INFO] [stdout]   |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `QueueError` is never used
[INFO] [stdout]   --> src/utils/queue.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub enum QueueError {
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Queue` is never constructed
[INFO] [stdout]   --> src/utils/queue.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub struct Queue<T> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `is_empty`, `is_full`, `enqueue`, and `dequeue` are never used
[INFO] [stdout]   --> src/utils/queue.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | / impl<T> Queue<T>
[INFO] [stdout] 37 | | where
[INFO] [stdout] 38 | |     T: Copy,
[INFO] [stdout]    | |____________- associated items in this implementation
[INFO] [stdout] 39 |   {
[INFO] [stdout] 40 |       fn new() -> Queue<T> {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |       fn is_empty(&self) -> bool {
[INFO] [stdout]    |          ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 52 |       fn is_full(&self) -> bool {
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 56 |       fn enqueue(&mut self, item: T) -> crate::Result<()> {
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 66 |       fn dequeue(&mut self) -> crate::Result<T> {
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 37.66s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: quick-xml v0.22.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "5f21d65d0b54e53d6beab7df6fb4851359c35327d65d42a178ae85a34455c1c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f21d65d0b54e53d6beab7df6fb4851359c35327d65d42a178ae85a34455c1c5", kill_on_drop: false }`
[INFO] [stdout] 5f21d65d0b54e53d6beab7df6fb4851359c35327d65d42a178ae85a34455c1c5
