[INFO] cloning repository https://github.com/tjpools/rust-strengths-demo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tjpools/rust-strengths-demo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftjpools%2Frust-strengths-demo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftjpools%2Frust-strengths-demo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5d4afc817587f50c3895b2d2f966aafa615cbad5
[INFO] checking tjpools/rust-strengths-demo against try#ac4c3613be2acd5395b65d85e5657b81e3c982f0 for pr-154585
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftjpools%2Frust-strengths-demo" "/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/tjpools/rust-strengths-demo
[INFO] finished tweaking git repo https://github.com/tjpools/rust-strengths-demo
[INFO] tweaked toml for git repo https://github.com/tjpools/rust-strengths-demo written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/tjpools/rust-strengths-demo on toolchain ac4c3613be2acd5395b65d85e5657b81e3c982f0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ac4c3613be2acd5395b65d85e5657b81e3c982f0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/tjpools/rust-strengths-demo 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" "+ac4c3613be2acd5395b65d85e5657b81e3c982f0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+ac4c3613be2acd5395b65d85e5657b81e3c982f0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b8bb8e4f375952f1d35cb855cfaadc1e2e2759927213d41c4c8cd4d08b3769a5
[INFO] running `Command { std: "docker" "start" "-a" "b8bb8e4f375952f1d35cb855cfaadc1e2e2759927213d41c4c8cd4d08b3769a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b8bb8e4f375952f1d35cb855cfaadc1e2e2759927213d41c4c8cd4d08b3769a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8bb8e4f375952f1d35cb855cfaadc1e2e2759927213d41c4c8cd4d08b3769a5", kill_on_drop: false }`
[INFO] [stdout] b8bb8e4f375952f1d35cb855cfaadc1e2e2759927213d41c4c8cd4d08b3769a5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+ac4c3613be2acd5395b65d85e5657b81e3c982f0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a5c508935af92d84e08bd3affe72f6f07455abb6c0d42738ba4c0efe7bcfe843
[INFO] running `Command { std: "docker" "start" "-a" "a5c508935af92d84e08bd3affe72f6f07455abb6c0d42738ba4c0efe7bcfe843", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_core v1.0.225
[INFO] [stderr]    Compiling rayon-core v1.13.0
[INFO] [stderr]    Compiling serde v1.0.225
[INFO] [stderr]     Checking either v1.15.0
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]     Checking clap_builder v4.5.48
[INFO] [stderr]     Checking rayon v1.11.0
[INFO] [stderr]     Checking serde_json v1.0.145
[INFO] [stderr]    Compiling clap_derive v4.5.47
[INFO] [stderr]    Compiling serde_derive v1.0.225
[INFO] [stderr]     Checking clap v4.5.48
[INFO] [stderr]     Checking rust-strengths-demo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/main.rs:38:17
[INFO] [stdout]    |
[INFO] [stdout] 38 |     InvalidData(String),
[INFO] [stdout]    |     ----------- ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ProcessingError` 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] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 38 -     InvalidData(String),
[INFO] [stdout] 38 +     InvalidData(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/main.rs:40:13
[INFO] [stdout]    |
[INFO] [stdout] 40 |     IoError(std::io::Error),
[INFO] [stdout]    |     ------- ^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ProcessingError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 40 -     IoError(std::io::Error),
[INFO] [stdout] 40 +     IoError(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `ComputationError` is never constructed
[INFO] [stdout]   --> src/main.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | enum ProcessingError {
[INFO] [stdout]    |      --------------- variant in this enum
[INFO] [stdout] 38 |     InvalidData(String),
[INFO] [stdout] 39 |     ComputationError(String),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ProcessingError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `unsafe_counter` is never used
[INFO] [stdout]  --> src/educational_examples.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub fn unsafe_counter() -> u64 {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CStyleVector` is never constructed
[INFO] [stdout]   --> src/educational_examples.rs:24:16
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub struct CStyleVector {
[INFO] [stdout]    |                ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/educational_examples.rs:31:16
[INFO] [stdout]    |
[INFO] [stdout] 30 |     impl CStyleVector {
[INFO] [stdout]    |     ----------------- associated function in this implementation
[INFO] [stdout] 31 |         pub fn new() -> Self {
[INFO] [stdout]    |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SafeCounter` is never constructed
[INFO] [stdout]   --> src/educational_examples.rs:45:16
[INFO] [stdout]    |
[INFO] [stdout] 45 |     pub struct SafeCounter {
[INFO] [stdout]    |                ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `increment`, and `spawn_workers` are never used
[INFO] [stdout]   --> src/educational_examples.rs:55:16
[INFO] [stdout]    |
[INFO] [stdout] 54 |     impl SafeCounter {
[INFO] [stdout]    |     ---------------- associated items in this implementation
[INFO] [stdout] 55 |         pub fn new() -> Self {
[INFO] [stdout]    |                ^^^
[INFO] [stdout] ...
[INFO] [stdout] 61 |         pub fn increment(&self) -> u64 {
[INFO] [stdout]    |                ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 73 |         pub fn spawn_workers(&self, count: usize) -> Vec<thread::JoinHandle<()>> {
[INFO] [stdout]    |                ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ProcessResult` is never used
[INFO] [stdout]   --> src/educational_examples.rs:94:14
[INFO] [stdout]    |
[INFO] [stdout] 94 |     pub enum ProcessResult<T> {
[INFO] [stdout]    |              ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `and_then` and `map` are never used
[INFO] [stdout]    --> src/educational_examples.rs:102:16
[INFO] [stdout]     |
[INFO] [stdout] 100 |     impl<T> ProcessResult<T> {
[INFO] [stdout]     |     ------------------------ methods in this implementation
[INFO] [stdout] 101 |         /// Teaches: Error handling as part of type system
[INFO] [stdout] 102 |         pub fn and_then<U, F>(self, f: F) -> ProcessResult<U>
[INFO] [stdout]     |                ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 114 |         pub fn map<U, F>(self, f: F) -> ProcessResult<U>
[INFO] [stdout]     |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Processor` is never used
[INFO] [stdout]    --> src/educational_examples.rs:127:15
[INFO] [stdout]     |
[INFO] [stdout] 127 |     pub trait Processor {
[INFO] [stdout]     |               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DataProcessor` is never constructed
[INFO] [stdout]    --> src/educational_examples.rs:134:16
[INFO] [stdout]     |
[INFO] [stdout] 134 |     pub struct DataProcessor;
[INFO] [stdout]     |                ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Application` is never constructed
[INFO] [stdout]    --> src/educational_examples.rs:167:16
[INFO] [stdout]     |
[INFO] [stdout] 167 |     pub struct Application {
[INFO] [stdout]     |                ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `run_simulation` are never used
[INFO] [stdout]    --> src/educational_examples.rs:173:16
[INFO] [stdout]     |
[INFO] [stdout] 172 |     impl Application {
[INFO] [stdout]     |     ---------------- associated items in this implementation
[INFO] [stdout] 173 |         pub fn new() -> Self {
[INFO] [stdout]     |                ^^^
[INFO] [stdout] ...
[INFO] [stdout] 181 |         pub fn run_simulation(&self) -> ProcessResult<String> {
[INFO] [stdout]     |                ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/main.rs:38:17
[INFO] [stdout]    |
[INFO] [stdout] 38 |     InvalidData(String),
[INFO] [stdout]    |     ----------- ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ProcessingError` 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] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 38 -     InvalidData(String),
[INFO] [stdout] 38 +     InvalidData(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/main.rs:40:13
[INFO] [stdout]    |
[INFO] [stdout] 40 |     IoError(std::io::Error),
[INFO] [stdout]    |     ------- ^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ProcessingError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 40 -     IoError(std::io::Error),
[INFO] [stdout] 40 +     IoError(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `ComputationError` is never constructed
[INFO] [stdout]   --> src/main.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | enum ProcessingError {
[INFO] [stdout]    |      --------------- variant in this enum
[INFO] [stdout] 38 |     InvalidData(String),
[INFO] [stdout] 39 |     ComputationError(String),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ProcessingError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CStyleVector` is never constructed
[INFO] [stdout]   --> src/educational_examples.rs:24:16
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub struct CStyleVector {
[INFO] [stdout]    |                ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/educational_examples.rs:31:16
[INFO] [stdout]    |
[INFO] [stdout] 30 |     impl CStyleVector {
[INFO] [stdout]    |     ----------------- associated function in this implementation
[INFO] [stdout] 31 |         pub fn new() -> Self {
[INFO] [stdout]    |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `and_then` and `map` are never used
[INFO] [stdout]    --> src/educational_examples.rs:102:16
[INFO] [stdout]     |
[INFO] [stdout] 100 |     impl<T> ProcessResult<T> {
[INFO] [stdout]     |     ------------------------ methods in this implementation
[INFO] [stdout] 101 |         /// Teaches: Error handling as part of type system
[INFO] [stdout] 102 |         pub fn and_then<U, F>(self, f: F) -> ProcessResult<U>
[INFO] [stdout]     |                ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 114 |         pub fn map<U, F>(self, f: F) -> ProcessResult<U>
[INFO] [stdout]     |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.88s
[INFO] running `Command { std: "docker" "inspect" "a5c508935af92d84e08bd3affe72f6f07455abb6c0d42738ba4c0efe7bcfe843", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5c508935af92d84e08bd3affe72f6f07455abb6c0d42738ba4c0efe7bcfe843", kill_on_drop: false }`
[INFO] [stdout] a5c508935af92d84e08bd3affe72f6f07455abb6c0d42738ba4c0efe7bcfe843
