[INFO] cloning repository https://github.com/huduku/my-web-service
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/huduku/my-web-service" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhuduku%2Fmy-web-service", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhuduku%2Fmy-web-service'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ea6d4093cc296e0b99d21b69ed092b59385c8d66
[INFO] testing huduku/my-web-service/ea6d4093cc296e0b99d21b69ed092b59385c8d66 against master#733b47ea4b1b86216f14ef56e49440c33933f230+rustflags=-Copt-level=3 for pr-138759
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhuduku%2Fmy-web-service" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/huduku/my-web-service
[INFO] finished tweaking git repo https://github.com/huduku/my-web-service
[INFO] tweaked toml for git repo https://github.com/huduku/my-web-service written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/huduku/my-web-service on toolchain 733b47ea4b1b86216f14ef56e49440c33933f230
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/huduku/my-web-service 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" "+733b47ea4b1b86216f14ef56e49440c33933f230" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b50d2d2e56d3d341f13c557bdcd2ae8fbc4c29273dc663c467c35e092cd5327a
[INFO] running `Command { std: "docker" "start" "-a" "b50d2d2e56d3d341f13c557bdcd2ae8fbc4c29273dc663c467c35e092cd5327a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b50d2d2e56d3d341f13c557bdcd2ae8fbc4c29273dc663c467c35e092cd5327a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b50d2d2e56d3d341f13c557bdcd2ae8fbc4c29273dc663c467c35e092cd5327a", kill_on_drop: false }`
[INFO] [stdout] b50d2d2e56d3d341f13c557bdcd2ae8fbc4c29273dc663c467c35e092cd5327a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 98f7401cb8eb33c9f73a9d83e116490ead6a283190f5a88f3e6d2b107f546e58
[INFO] running `Command { std: "docker" "start" "-a" "98f7401cb8eb33c9f73a9d83e116490ead6a283190f5a88f3e6d2b107f546e58", kill_on_drop: false }`
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[INFO] [stdout] warning: unused imports: `AreaCalculator`, `Circle`, `Rectangle`, and `Visitable`
[INFO] [stdout]   --> src/test/double_dispatch.rs:50:40
[INFO] [stdout]    |
[INFO] [stdout] 50 |     use crate::test::double_dispatch::{AreaCalculator, Circle, Rectangle, Visitable};
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^  ^^^^^^  ^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `student_repository` is never used
[INFO] [stdout]   --> src/web/student_controller.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn student_repository() -> &'static StudentRepositoryImpl {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Visitor` is never used
[INFO] [stdout]  --> src/test/double_dispatch.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | trait Visitor {
[INFO] [stdout]   |       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Visitable` is never used
[INFO] [stdout]  --> src/test/double_dispatch.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 | trait Visitable {
[INFO] [stdout]   |       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Circle` is never constructed
[INFO] [stdout]   --> src/test/double_dispatch.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct Circle {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]   --> src/test/double_dispatch.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | struct Rectangle {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AreaCalculator` is never constructed
[INFO] [stdout]   --> src/test/double_dispatch.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | struct AreaCalculator;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stdout]   --> src/ddd/repo.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     async fn attach(&self, aggr: Self::Aggr);
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stdout]    = note: `#[warn(async_fn_in_trait)]` on by default
[INFO] [stdout] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stdout]    |
[INFO] [stdout] 16 -     async fn attach(&self, aggr: Self::Aggr);
[INFO] [stdout] 16 +     fn attach(&self, aggr: Self::Aggr) -> impl std::future::Future<Output = ()> + Send;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stdout]   --> src/ddd/repo.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     async fn detach(&self, aggr: Self::Aggr);
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stdout] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stdout]    |
[INFO] [stdout] 18 -     async fn detach(&self, aggr: Self::Aggr);
[INFO] [stdout] 18 +     fn detach(&self, aggr: Self::Aggr) -> impl std::future::Future<Output = ()> + Send;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stdout]   --> src/ddd/repo.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     async fn find(&self, id: Self::Id) ->  Result<Self::Aggr, String>;
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stdout] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stdout]    |
[INFO] [stdout] 20 -     async fn find(&self, id: Self::Id) ->  Result<Self::Aggr, String>;
[INFO] [stdout] 20 +     fn find(&self, id: Self::Id) ->  impl std::future::Future<Output = Result<Self::Aggr, String>> + Send;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stdout]   --> src/ddd/repo.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     async fn save(&self, aggr: Self::Aggr) -> Result<(), String>;
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stdout] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stdout]    |
[INFO] [stdout] 22 -     async fn save(&self, aggr: Self::Aggr) -> Result<(), String>;
[INFO] [stdout] 22 +     fn save(&self, aggr: Self::Aggr) -> impl std::future::Future<Output = Result<(), String>> + Send;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stdout]   --> src/ddd/repo.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     async fn remove(&self, aggr: Self::Id) -> Result<(), String>;
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stdout] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stdout]    |
[INFO] [stdout] 24 -     async fn remove(&self, aggr: Self::Id) -> Result<(), String>;
[INFO] [stdout] 24 +     fn remove(&self, aggr: Self::Id) -> impl std::future::Future<Output = Result<(), String>> + Send;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stdout]   --> src/domain/repo/student.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     async fn find_one(&self, stu_no: StuNo) -> Result<Student, String>;
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stdout] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stdout]    |
[INFO] [stdout] 10 -     async fn find_one(&self, stu_no: StuNo) -> Result<Student, String>;
[INFO] [stdout] 10 +     fn find_one(&self, stu_no: StuNo) -> impl std::future::Future<Output = Result<Student, String>> + Send;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stdout]   --> src/domain/repo/student.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     async fn find_page(&self, page_query: PageQuery<StudentQuery>) -> Result<PageRes<Student>, String>;
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stdout] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stdout]    |
[INFO] [stdout] 12 -     async fn find_page(&self, page_query: PageQuery<StudentQuery>) -> Result<PageRes<Student>, String>;
[INFO] [stdout] 12 +     fn find_page(&self, page_query: PageQuery<StudentQuery>) -> impl std::future::Future<Output = Result<PageRes<Student>, String>> + Send;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stdout]   --> src/domain/repo/student.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     async fn count(&self, query: StudentQuery) -> Result<u64, String>;
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stdout] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stdout]    |
[INFO] [stdout] 14 -     async fn count(&self, query: StudentQuery) -> Result<u64, String>;
[INFO] [stdout] 14 +     fn count(&self, query: StudentQuery) -> impl std::future::Future<Output = Result<u64, String>> + Send;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7m 17s
[INFO] running `Command { std: "docker" "inspect" "98f7401cb8eb33c9f73a9d83e116490ead6a283190f5a88f3e6d2b107f546e58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98f7401cb8eb33c9f73a9d83e116490ead6a283190f5a88f3e6d2b107f546e58", kill_on_drop: false }`
[INFO] [stdout] 98f7401cb8eb33c9f73a9d83e116490ead6a283190f5a88f3e6d2b107f546e58
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 27a78bc7650254d97cd28708d768eca74a8c3cb397add96c9e8788de355b695b
[INFO] running `Command { std: "docker" "start" "-a" "27a78bc7650254d97cd28708d768eca74a8c3cb397add96c9e8788de355b695b", kill_on_drop: false }`
[INFO] [stdout] warning: unused imports: `AreaCalculator`, `Circle`, `Rectangle`, and `Visitable`
[INFO] [stdout]   --> src/test/double_dispatch.rs:50:40
[INFO] [stdout]    |
[INFO] [stdout] 50 |     use crate::test::double_dispatch::{AreaCalculator, Circle, Rectangle, Visitable};
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^  ^^^^^^  ^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `student_repository` is never used
[INFO] [stdout]   --> src/web/student_controller.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn student_repository() -> &'static StudentRepositoryImpl {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Visitor` is never used
[INFO] [stdout]  --> src/test/double_dispatch.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | trait Visitor {
[INFO] [stdout]   |       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Visitable` is never used
[INFO] [stdout]  --> src/test/double_dispatch.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 | trait Visitable {
[INFO] [stdout]   |       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Circle` is never constructed
[INFO] [stdout]   --> src/test/double_dispatch.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct Circle {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]   --> src/test/double_dispatch.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | struct Rectangle {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AreaCalculator` is never constructed
[INFO] [stdout]   --> src/test/double_dispatch.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | struct AreaCalculator;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stdout]   --> src/ddd/repo.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     async fn attach(&self, aggr: Self::Aggr);
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stdout]    = note: `#[warn(async_fn_in_trait)]` on by default
[INFO] [stdout] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stdout]    |
[INFO] [stdout] 16 -     async fn attach(&self, aggr: Self::Aggr);
[INFO] [stdout] 16 +     fn attach(&self, aggr: Self::Aggr) -> impl std::future::Future<Output = ()> + Send;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stdout]   --> src/ddd/repo.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     async fn detach(&self, aggr: Self::Aggr);
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stdout] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stdout]    |
[INFO] [stdout] 18 -     async fn detach(&self, aggr: Self::Aggr);
[INFO] [stdout] 18 +     fn detach(&self, aggr: Self::Aggr) -> impl std::future::Future<Output = ()> + Send;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stdout]   --> src/ddd/repo.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     async fn find(&self, id: Self::Id) ->  Result<Self::Aggr, String>;
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stdout] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stdout]    |
[INFO] [stdout] 20 -     async fn find(&self, id: Self::Id) ->  Result<Self::Aggr, String>;
[INFO] [stdout] 20 +     fn find(&self, id: Self::Id) ->  impl std::future::Future<Output = Result<Self::Aggr, String>> + Send;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stdout]   --> src/ddd/repo.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     async fn save(&self, aggr: Self::Aggr) -> Result<(), String>;
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stdout] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stdout]    |
[INFO] [stdout] 22 -     async fn save(&self, aggr: Self::Aggr) -> Result<(), String>;
[INFO] [stdout] 22 +     fn save(&self, aggr: Self::Aggr) -> impl std::future::Future<Output = Result<(), String>> + Send;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stdout]   --> src/ddd/repo.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     async fn remove(&self, aggr: Self::Id) -> Result<(), String>;
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stdout] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stdout]    |
[INFO] [stdout] 24 -     async fn remove(&self, aggr: Self::Id) -> Result<(), String>;
[INFO] [stdout] 24 +     fn remove(&self, aggr: Self::Id) -> impl std::future::Future<Output = Result<(), String>> + Send;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stdout]   --> src/domain/repo/student.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     async fn find_one(&self, stu_no: StuNo) -> Result<Student, String>;
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stdout] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stdout]    |
[INFO] [stdout] 10 -     async fn find_one(&self, stu_no: StuNo) -> Result<Student, String>;
[INFO] [stdout] 10 +     fn find_one(&self, stu_no: StuNo) -> impl std::future::Future<Output = Result<Student, String>> + Send;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stdout]   --> src/domain/repo/student.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     async fn find_page(&self, page_query: PageQuery<StudentQuery>) -> Result<PageRes<Student>, String>;
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stdout] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stdout]    |
[INFO] [stdout] 12 -     async fn find_page(&self, page_query: PageQuery<StudentQuery>) -> Result<PageRes<Student>, String>;
[INFO] [stdout] 12 +     fn find_page(&self, page_query: PageQuery<StudentQuery>) -> impl std::future::Future<Output = Result<PageRes<Student>, String>> + Send;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling my-web-service v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stdout]   --> src/domain/repo/student.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     async fn count(&self, query: StudentQuery) -> Result<u64, String>;
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stdout] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stdout]    |
[INFO] [stdout] 14 -     async fn count(&self, query: StudentQuery) -> Result<u64, String>;
[INFO] [stdout] 14 +     fn count(&self, query: StudentQuery) -> impl std::future::Future<Output = Result<u64, String>> + Send;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `student_repository` is never used
[INFO] [stdout]   --> src/web/student_controller.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn student_repository() -> &'static StudentRepositoryImpl {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stdout]   --> src/ddd/repo.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     async fn attach(&self, aggr: Self::Aggr);
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stdout]    = note: `#[warn(async_fn_in_trait)]` on by default
[INFO] [stdout] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stdout]    |
[INFO] [stdout] 16 -     async fn attach(&self, aggr: Self::Aggr);
[INFO] [stdout] 16 +     fn attach(&self, aggr: Self::Aggr) -> impl std::future::Future<Output = ()> + Send;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stdout]   --> src/ddd/repo.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     async fn detach(&self, aggr: Self::Aggr);
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stdout] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stdout]    |
[INFO] [stdout] 18 -     async fn detach(&self, aggr: Self::Aggr);
[INFO] [stdout] 18 +     fn detach(&self, aggr: Self::Aggr) -> impl std::future::Future<Output = ()> + Send;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stdout]   --> src/ddd/repo.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     async fn find(&self, id: Self::Id) ->  Result<Self::Aggr, String>;
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stdout] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stdout]    |
[INFO] [stdout] 20 -     async fn find(&self, id: Self::Id) ->  Result<Self::Aggr, String>;
[INFO] [stdout] 20 +     fn find(&self, id: Self::Id) ->  impl std::future::Future<Output = Result<Self::Aggr, String>> + Send;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stdout]   --> src/ddd/repo.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     async fn save(&self, aggr: Self::Aggr) -> Result<(), String>;
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stdout] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stdout]    |
[INFO] [stdout] 22 -     async fn save(&self, aggr: Self::Aggr) -> Result<(), String>;
[INFO] [stdout] 22 +     fn save(&self, aggr: Self::Aggr) -> impl std::future::Future<Output = Result<(), String>> + Send;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stdout]   --> src/ddd/repo.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     async fn remove(&self, aggr: Self::Id) -> Result<(), String>;
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stdout] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stdout]    |
[INFO] [stdout] 24 -     async fn remove(&self, aggr: Self::Id) -> Result<(), String>;
[INFO] [stdout] 24 +     fn remove(&self, aggr: Self::Id) -> impl std::future::Future<Output = Result<(), String>> + Send;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stdout]   --> src/domain/repo/student.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     async fn find_one(&self, stu_no: StuNo) -> Result<Student, String>;
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stdout] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stdout]    |
[INFO] [stdout] 10 -     async fn find_one(&self, stu_no: StuNo) -> Result<Student, String>;
[INFO] [stdout] 10 +     fn find_one(&self, stu_no: StuNo) -> impl std::future::Future<Output = Result<Student, String>> + Send;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stdout]   --> src/domain/repo/student.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     async fn find_page(&self, page_query: PageQuery<StudentQuery>) -> Result<PageRes<Student>, String>;
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stdout] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stdout]    |
[INFO] [stdout] 12 -     async fn find_page(&self, page_query: PageQuery<StudentQuery>) -> Result<PageRes<Student>, String>;
[INFO] [stdout] 12 +     fn find_page(&self, page_query: PageQuery<StudentQuery>) -> impl std::future::Future<Output = Result<PageRes<Student>, String>> + Send;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stdout]   --> src/domain/repo/student.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     async fn count(&self, query: StudentQuery) -> Result<u64, String>;
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stdout] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stdout]    |
[INFO] [stdout] 14 -     async fn count(&self, query: StudentQuery) -> Result<u64, String>;
[INFO] [stdout] 14 +     fn count(&self, query: StudentQuery) -> impl std::future::Future<Output = Result<u64, String>> + Send;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.43s
[INFO] running `Command { std: "docker" "inspect" "27a78bc7650254d97cd28708d768eca74a8c3cb397add96c9e8788de355b695b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27a78bc7650254d97cd28708d768eca74a8c3cb397add96c9e8788de355b695b", kill_on_drop: false }`
[INFO] [stdout] 27a78bc7650254d97cd28708d768eca74a8c3cb397add96c9e8788de355b695b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e71e3265839780c78c41504f294e161aa9fa5dbca067661bc45b713b25e9ccb3
[INFO] running `Command { std: "docker" "start" "-a" "e71e3265839780c78c41504f294e161aa9fa5dbca067661bc45b713b25e9ccb3", kill_on_drop: false }`
[INFO] [stderr] warning: unused imports: `AreaCalculator`, `Circle`, `Rectangle`, and `Visitable`
[INFO] [stderr]   --> src/test/double_dispatch.rs:50:40
[INFO] [stderr]    |
[INFO] [stderr] 50 |     use crate::test::double_dispatch::{AreaCalculator, Circle, Rectangle, Visitable};
[INFO] [stderr]    |                                        ^^^^^^^^^^^^^^  ^^^^^^  ^^^^^^^^^  ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `student_repository` is never used
[INFO] [stderr]   --> src/web/student_controller.rs:20:4
[INFO] [stderr]    |
[INFO] [stderr] 20 | fn student_repository() -> &'static StudentRepositoryImpl {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait `Visitor` is never used
[INFO] [stderr]  --> src/test/double_dispatch.rs:3:7
[INFO] [stderr]   |
[INFO] [stderr] 3 | trait Visitor {
[INFO] [stderr]   |       ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait `Visitable` is never used
[INFO] [stderr]  --> src/test/double_dispatch.rs:8:7
[INFO] [stderr]   |
[INFO] [stderr] 8 | trait Visitable {
[INFO] [stderr]   |       ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Circle` is never constructed
[INFO] [stderr]   --> src/test/double_dispatch.rs:12:8
[INFO] [stderr]    |
[INFO] [stderr] 12 | struct Circle {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Rectangle` is never constructed
[INFO] [stderr]   --> src/test/double_dispatch.rs:22:8
[INFO] [stderr]    |
[INFO] [stderr] 22 | struct Rectangle {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `AreaCalculator` is never constructed
[INFO] [stderr]   --> src/test/double_dispatch.rs:33:8
[INFO] [stderr]    |
[INFO] [stderr] 33 | struct AreaCalculator;
[INFO] [stderr]    |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stderr]   --> src/ddd/repo.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     async fn attach(&self, aggr: Self::Aggr);
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stderr]    = note: `#[warn(async_fn_in_trait)]` on by default
[INFO] [stderr] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stderr]    |
[INFO] [stderr] 16 -     async fn attach(&self, aggr: Self::Aggr);
[INFO] [stderr] 16 +     fn attach(&self, aggr: Self::Aggr) -> impl std::future::Future<Output = ()> + Send;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stderr]   --> src/ddd/repo.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     async fn detach(&self, aggr: Self::Aggr);
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stderr] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stderr]    |
[INFO] [stderr] 18 -     async fn detach(&self, aggr: Self::Aggr);
[INFO] [stderr] 18 +     fn detach(&self, aggr: Self::Aggr) -> impl std::future::Future<Output = ()> + Send;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stderr]   --> src/ddd/repo.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     async fn find(&self, id: Self::Id) ->  Result<Self::Aggr, String>;
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stderr] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stderr]    |
[INFO] [stderr] 20 -     async fn find(&self, id: Self::Id) ->  Result<Self::Aggr, String>;
[INFO] [stderr] 20 +     fn find(&self, id: Self::Id) ->  impl std::future::Future<Output = Result<Self::Aggr, String>> + Send;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stderr]   --> src/ddd/repo.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     async fn save(&self, aggr: Self::Aggr) -> Result<(), String>;
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stderr] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stderr]    |
[INFO] [stderr] 22 -     async fn save(&self, aggr: Self::Aggr) -> Result<(), String>;
[INFO] [stderr] 22 +     fn save(&self, aggr: Self::Aggr) -> impl std::future::Future<Output = Result<(), String>> + Send;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stderr]   --> src/ddd/repo.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     async fn remove(&self, aggr: Self::Id) -> Result<(), String>;
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stderr] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stderr]    |
[INFO] [stderr] 24 -     async fn remove(&self, aggr: Self::Id) -> Result<(), String>;
[INFO] [stderr] 24 +     fn remove(&self, aggr: Self::Id) -> impl std::future::Future<Output = Result<(), String>> + Send;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stderr]   --> src/domain/repo/student.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     async fn find_one(&self, stu_no: StuNo) -> Result<Student, String>;
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stderr] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stderr]    |
[INFO] [stderr] 10 -     async fn find_one(&self, stu_no: StuNo) -> Result<Student, String>;
[INFO] [stderr] 10 +     fn find_one(&self, stu_no: StuNo) -> impl std::future::Future<Output = Result<Student, String>> + Send;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stderr]   --> src/domain/repo/student.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     async fn find_page(&self, page_query: PageQuery<StudentQuery>) -> Result<PageRes<Student>, String>;
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stderr] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stderr]    |
[INFO] [stderr] 12 -     async fn find_page(&self, page_query: PageQuery<StudentQuery>) -> Result<PageRes<Student>, String>;
[INFO] [stderr] 12 +     fn find_page(&self, page_query: PageQuery<StudentQuery>) -> impl std::future::Future<Output = Result<PageRes<Student>, String>> + Send;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stderr]   --> src/domain/repo/student.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     async fn count(&self, query: StudentQuery) -> Result<u64, String>;
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stderr] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stderr]    |
[INFO] [stderr] 14 -     async fn count(&self, query: StudentQuery) -> Result<u64, String>;
[INFO] [stderr] 14 +     fn count(&self, query: StudentQuery) -> impl std::future::Future<Output = Result<u64, String>> + Send;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: `my-web-service` (lib) generated 15 warnings (run `cargo fix --lib -p my-web-service` to apply 1 suggestion)
[INFO] [stderr] warning: `my-web-service` (lib test) generated 9 warnings (9 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.38s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/my_web_service-33888fc0a562b984)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test::double_dispatch::test::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/my_web_service-61ba622558ae1a09)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests my_web_service
[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" "e71e3265839780c78c41504f294e161aa9fa5dbca067661bc45b713b25e9ccb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e71e3265839780c78c41504f294e161aa9fa5dbca067661bc45b713b25e9ccb3", kill_on_drop: false }`
[INFO] [stdout] e71e3265839780c78c41504f294e161aa9fa5dbca067661bc45b713b25e9ccb3
