[INFO] cloning repository https://github.com/LiWenGu/learing-rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LiWenGu/learing-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLiWenGu%2Flearing-rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLiWenGu%2Flearing-rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 1018016a1d796e913f4132017e0b754036fa4939 [INFO] checking LiWenGu/learing-rust against try#93086cfebfccb79083c59d0d3b2052944bba643c for pr-146440-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLiWenGu%2Flearing-rust" "/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/LiWenGu/learing-rust [INFO] finished tweaking git repo https://github.com/LiWenGu/learing-rust [INFO] tweaked toml for git repo https://github.com/LiWenGu/learing-rust written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/LiWenGu/learing-rust on toolchain 93086cfebfccb79083c59d0d3b2052944bba643c [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/LiWenGu/learing-rust 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" "+93086cfebfccb79083c59d0d3b2052944bba643c" "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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 5f511a9aa3cb2c2c22710f4ff7bdbba567301747760ea25b47c19968e950b2c5 [INFO] running `Command { std: "docker" "start" "-a" "5f511a9aa3cb2c2c22710f4ff7bdbba567301747760ea25b47c19968e950b2c5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "5f511a9aa3cb2c2c22710f4ff7bdbba567301747760ea25b47c19968e950b2c5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5f511a9aa3cb2c2c22710f4ff7bdbba567301747760ea25b47c19968e950b2c5", kill_on_drop: false }` [INFO] [stdout] 5f511a9aa3cb2c2c22710f4ff7bdbba567301747760ea25b47c19968e950b2c5 [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" "-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" "+93086cfebfccb79083c59d0d3b2052944bba643c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 94b6fa313d15eb544b93b5f1b906b6099998d5e43d7fa277bb5d5c23f8810937 [INFO] running `Command { std: "docker" "start" "-a" "94b6fa313d15eb544b93b5f1b906b6099998d5e43d7fa277bb5d5c23f8810937", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v0.4.30 [INFO] [stderr] Compiling libc v0.2.62 [INFO] [stderr] Compiling unicode-xid v0.1.0 [INFO] [stderr] Checking hello_macro v0.1.0 (/opt/rustwide/workdir/hello_macro) [INFO] [stderr] Checking intelligent-point v0.1.0 (/opt/rustwide/workdir/intelligent-point) [INFO] [stderr] Checking web v0.1.0 (/opt/rustwide/workdir/web) [INFO] [stderr] Checking object-feature v0.1.0 (/opt/rustwide/workdir/object-feature) [INFO] [stdout] warning: unused import: `std::rc::Rc` [INFO] [stdout] --> intelligent-point/src/lib.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::rc::Rc; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking fearless-concurrent v0.1.0 (/opt/rustwide/workdir/fearless-concurrent) [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> intelligent-point/src/lib.rs:15:27 [INFO] [stdout] | [INFO] [stdout] 15 | pub fn new(messenger: &T, max: usize) -> LimitTracker { [INFO] [stdout] | ^^ ^^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 15 | pub fn new(messenger: &T, max: usize) -> LimitTracker<'_, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> web/src/lib.rs:4:16 [INFO] [stdout] | [INFO] [stdout] 4 | type Job = Box; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default [INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 4 | type Job = Box; [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `post` [INFO] [stdout] --> object-feature/src/lib.rs:180:27 [INFO] [stdout] | [INFO] [stdout] 180 | fn content<'a>(&self, post: &'a Post) -> &'a str { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_post` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: struct `AveragedCollection` is never constructed [INFO] [stdout] --> object-feature/src/lib.rs:1:12 [INFO] [stdout] | [INFO] [stdout] 1 | pub struct AveragedCollection { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it [INFO] [stdout] = note: `#[deny(unused_unconstructable_pub_structs)]` (part of `#[deny(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: struct `DraftPost` is never constructed [INFO] [stdout] --> object-feature/src/lib.rs:70:12 [INFO] [stdout] | [INFO] [stdout] 70 | pub struct DraftPost { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: struct `PendingReviewPost` is never constructed [INFO] [stdout] --> object-feature/src/lib.rs:82:12 [INFO] [stdout] | [INFO] [stdout] 82 | pub struct PendingReviewPost { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `SelectBox` is never constructed [INFO] [stdout] --> object-feature/src/lib.rs:59:8 [INFO] [stdout] | [INFO] [stdout] 59 | struct SelectBox { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `object-feature` (lib) due to 3 previous errors; 2 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: unused variable: `list` [INFO] [stdout] --> intelligent-point/src/main.rs:7:9 [INFO] [stdout] | [INFO] [stdout] 7 | let list = Cons(1, [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_list` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `c` [INFO] [stdout] --> intelligent-point/src/main.rs:14:9 [INFO] [stdout] | [INFO] [stdout] 14 | let c = CustomSmartPointer {data: String::from("my stuff")}; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `d` [INFO] [stdout] --> intelligent-point/src/main.rs:16:9 [INFO] [stdout] | [INFO] [stdout] 16 | let d = CustomSmartPointer {data: String::from("other stuff")}; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_d` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0` and `1` are never read [INFO] [stdout] --> intelligent-point/src/main.rs:37:10 [INFO] [stdout] | [INFO] [stdout] 37 | Cons(i32, Box), [INFO] [stdout] | ---- ^^^ ^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this variant [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields [INFO] [stdout] | [INFO] [stdout] 37 - Cons(i32, Box), [INFO] [stdout] 37 + Cons((), ()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `Listz` is never used [INFO] [stdout] --> intelligent-point/src/main.rs:67:6 [INFO] [stdout] | [INFO] [stdout] 67 | enum Listz { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0` and `1` are never read [INFO] [stdout] --> intelligent-point/src/main.rs:74:10 [INFO] [stdout] | [INFO] [stdout] 74 | Cons(Rc>, Rc), [INFO] [stdout] | ---- ^^^^^^^^^^^^^^^^ ^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this variant [INFO] [stdout] | [INFO] [stdout] = note: `Lists` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields [INFO] [stdout] | [INFO] [stdout] 74 - Cons(Rc>, Rc), [INFO] [stdout] 74 + Cons((), ()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `list` [INFO] [stdout] --> intelligent-point/src/main.rs:7:9 [INFO] [stdout] | [INFO] [stdout] 7 | let list = Cons(1, [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_list` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `c` [INFO] [stdout] --> intelligent-point/src/main.rs:14:9 [INFO] [stdout] | [INFO] [stdout] 14 | let c = CustomSmartPointer {data: String::from("my stuff")}; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `d` [INFO] [stdout] --> intelligent-point/src/main.rs:16:9 [INFO] [stdout] | [INFO] [stdout] 16 | let d = CustomSmartPointer {data: String::from("other stuff")}; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_d` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0` and `1` are never read [INFO] [stdout] --> intelligent-point/src/main.rs:37:10 [INFO] [stdout] | [INFO] [stdout] 37 | Cons(i32, Box), [INFO] [stdout] | ---- ^^^ ^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this variant [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields [INFO] [stdout] | [INFO] [stdout] 37 - Cons(i32, Box), [INFO] [stdout] 37 + Cons((), ()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `Listz` is never used [INFO] [stdout] --> intelligent-point/src/main.rs:67:6 [INFO] [stdout] | [INFO] [stdout] 67 | enum Listz { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0` and `1` are never read [INFO] [stdout] --> intelligent-point/src/main.rs:74:10 [INFO] [stdout] | [INFO] [stdout] 74 | Cons(Rc>, Rc), [INFO] [stdout] | ---- ^^^^^^^^^^^^^^^^ ^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this variant [INFO] [stdout] | [INFO] [stdout] = note: `Lists` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields [INFO] [stdout] | [INFO] [stdout] 74 - Cons(Rc>, Rc), [INFO] [stdout] 74 + Cons((), ()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `MutexExample` should have a snake case name [INFO] [stdout] --> fearless-concurrent/src/main.rs:85:4 [INFO] [stdout] | [INFO] [stdout] 85 | fn MutexExample() { [INFO] [stdout] | ^^^^^^^^^^^^ help: convert the identifier to snake case: `mutex_example` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `MutexExample` should have a snake case name [INFO] [stdout] --> fearless-concurrent/src/main.rs:85:4 [INFO] [stdout] | [INFO] [stdout] 85 | fn MutexExample() { [INFO] [stdout] | ^^^^^^^^^^^^ help: convert the identifier to snake case: `mutex_example` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "94b6fa313d15eb544b93b5f1b906b6099998d5e43d7fa277bb5d5c23f8810937", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "94b6fa313d15eb544b93b5f1b906b6099998d5e43d7fa277bb5d5c23f8810937", kill_on_drop: false }` [INFO] [stdout] 94b6fa313d15eb544b93b5f1b906b6099998d5e43d7fa277bb5d5c23f8810937