[INFO] cloning repository https://github.com/layen-king/rust-learning
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/layen-king/rust-learning" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flayen-king%2Frust-learning", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flayen-king%2Frust-learning'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c2ccb7b92621ea15027cc19bd70284f9c0b23630
[INFO] testing layen-king/rust-learning against 1.98.0-beta.1 for beta-1.98-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flayen-king%2Frust-learning" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/layen-king/rust-learning
[INFO] finished tweaking git repo https://github.com/layen-king/rust-learning
[INFO] tweaked toml for git repo https://github.com/layen-king/rust-learning written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/layen-king/rust-learning on toolchain 1.98.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.98.0-beta.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.98.0-beta.1" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 77 packages to latest compatible versions
[INFO] [stderr]       Adding rand v0.8.7 (available: v0.10.2)
[INFO] [stderr]       Adding thiserror v1.0.69 (available: v2.0.18)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.98.0-beta.1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3d5ced03c013a94a2f102a4510f48a6e9184255caf5fd8244f58017bde7f5210" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] adf057771367f3b95df177b26d5f428f280e769d958a8540de32c4a902be6d1a
[INFO] running `Command { std: "docker" "start" "adf057771367f3b95df177b26d5f428f280e769d958a8540de32c4a902be6d1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "adf057771367f3b95df177b26d5f428f280e769d958a8540de32c4a902be6d1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "adf057771367f3b95df177b26d5f428f280e769d958a8540de32c4a902be6d1a" "/opt/rustwide/cargo-home/bin/cargo" "+1.98.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "adf057771367f3b95df177b26d5f428f280e769d958a8540de32c4a902be6d1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "adf057771367f3b95df177b26d5f428f280e769d958a8540de32c4a902be6d1a" "/opt/rustwide/cargo-home/bin/cargo" "+1.98.0-beta.1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.5.1
[INFO] [stderr]    Compiling zerocopy v0.8.54
[INFO] [stderr]    Compiling futures-core v0.3.32
[INFO] [stderr]    Compiling futures-sink v0.3.32
[INFO] [stderr]    Compiling syn v2.0.118
[INFO] [stderr]    Compiling getrandom v0.2.17
[INFO] [stderr]    Compiling slab v0.4.12
[INFO] [stderr]    Compiling smallvec v1.15.2
[INFO] [stderr]    Compiling lock_api v0.4.14
[INFO] [stderr]    Compiling futures-channel v0.3.32
[INFO] [stderr]    Compiling anyhow v1.0.103
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling parking_lot_core v0.9.12
[INFO] [stderr]    Compiling errno v0.3.14
[INFO] [stderr]    Compiling serde_json v1.0.150
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling signal-hook-registry v1.4.8
[INFO] [stderr]    Compiling parking_lot v0.12.5
[INFO] [stderr]    Compiling uuid v0.8.2
[INFO] [stderr]    Compiling rust_by_example v0.1.0 (/opt/rustwide/workdir/rust_by_example)
[INFO] [stdout] warning: struct `MinMax` is never constructed
[INFO] [stdout]  --> rust_by_example/src/print_display.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct MinMax(i64,i64);
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `List` is never constructed
[INFO] [stdout]   --> rust_by_example/src/print_display.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct List(Vec<i32>);
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Number` is never constructed
[INFO] [stdout]  --> rust_by_example/src/from_into.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Number {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]  --> rust_by_example/src/trait_add.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Point<T: Add<T, Output = T>> {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling bufstream v0.1.4
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling num-complex v0.4.6
[INFO] [stderr]    Compiling num-bigint v0.4.8
[INFO] [stderr]    Compiling num-iter v0.1.46
[INFO] [stderr]    Compiling futures-macro v0.3.32
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling tokio-macros v2.7.0
[INFO] [stderr]    Compiling num-rational v0.4.2
[INFO] [stderr]    Compiling tokio v1.52.3
[INFO] [stderr]    Compiling num v0.4.3
[INFO] [stderr]    Compiling futures-util v0.3.32
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling mime_types v0.1.0 (/opt/rustwide/workdir/mime_types)
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.7
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling leetcode v0.1.0 (/opt/rustwide/workdir/leetcode)
[INFO] [stderr]    Compiling bincode v1.3.3
[INFO] [stderr]    Compiling del-repeat v0.1.0 (/opt/rustwide/workdir/del-repeat)
[INFO] [stderr]    Compiling futures-executor v0.3.32
[INFO] [stderr]    Compiling event_emiter v0.1.0 (/opt/rustwide/workdir/event_emiter)
[INFO] [stderr]    Compiling futures v0.3.32
[INFO] [stderr]    Compiling rust_course v0.1.0 (/opt/rustwide/workdir/void/rust_course)
[INFO] [stdout] warning: trait `Stream` is never used
[INFO] [stdout]   --> void/rust_course/src/async_await.rs:88:7
[INFO] [stdout]    |
[INFO] [stdout] 88 | trait Stream {
[INFO] [stdout]    |       ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rust-learn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 44.73s
[INFO] running `Command { std: "docker" "inspect" "adf057771367f3b95df177b26d5f428f280e769d958a8540de32c4a902be6d1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "adf057771367f3b95df177b26d5f428f280e769d958a8540de32c4a902be6d1a" "/opt/rustwide/cargo-home/bin/cargo" "+1.98.0-beta.1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-learn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `Stream` is never used
[INFO] [stdout]   --> void/rust_course/src/async_await.rs:88:7
[INFO] [stdout]    |
[INFO] [stdout] 88 | trait Stream {
[INFO] [stdout]    |       ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MinMax` is never constructed
[INFO] [stdout]  --> rust_by_example/src/print_display.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct MinMax(i64,i64);
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `List` is never constructed
[INFO] [stdout]   --> rust_by_example/src/print_display.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct List(Vec<i32>);
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Number` is never constructed
[INFO] [stdout]  --> rust_by_example/src/from_into.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Number {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]  --> rust_by_example/src/trait_add.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Point<T: Add<T, Output = T>> {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.59s
[INFO] running `Command { std: "docker" "inspect" "adf057771367f3b95df177b26d5f428f280e769d958a8540de32c4a902be6d1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "adf057771367f3b95df177b26d5f428f280e769d958a8540de32c4a902be6d1a" "/opt/rustwide/cargo-home/bin/cargo" "+1.98.0-beta.1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] warning: trait `Stream` is never used
[INFO] [stderr]   --> void/rust_course/src/async_await.rs:88:7
[INFO] [stderr]    |
[INFO] [stderr] 88 | trait Stream {
[INFO] [stderr]    |       ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rust_course` (lib) generated 1 warning
[INFO] [stderr] warning: struct `MinMax` is never constructed
[INFO] [stderr]  --> rust_by_example/src/print_display.rs:5:8
[INFO] [stderr]   |
[INFO] [stderr] 5 | struct MinMax(i64,i64);
[INFO] [stderr]   |        ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `List` is never constructed
[INFO] [stderr]   --> rust_by_example/src/print_display.rs:15:8
[INFO] [stderr]    |
[INFO] [stderr] 15 | struct List(Vec<i32>);
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Number` is never constructed
[INFO] [stderr]  --> rust_by_example/src/from_into.rs:4:8
[INFO] [stderr]   |
[INFO] [stderr] 4 | struct Number {
[INFO] [stderr]   |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Point` is never constructed
[INFO] [stderr]  --> rust_by_example/src/trait_add.rs:6:8
[INFO] [stderr]   |
[INFO] [stderr] 6 | struct Point<T: Add<T, Output = T>> {
[INFO] [stderr]   |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rust_by_example` (lib) generated 4 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_learn-929e932c3119f973)
[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" "adf057771367f3b95df177b26d5f428f280e769d958a8540de32c4a902be6d1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "adf057771367f3b95df177b26d5f428f280e769d958a8540de32c4a902be6d1a", kill_on_drop: false }`
[INFO] [stdout] adf057771367f3b95df177b26d5f428f280e769d958a8540de32c4a902be6d1a
