[INFO] cloning repository https://github.com/prananda21/uniconv
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/prananda21/uniconv" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprananda21%2Funiconv", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprananda21%2Funiconv'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 444275da97ac6bbba5c517e1146b4f71364c3d0b
[INFO] testing prananda21/uniconv against beta-2026-04-21 for beta-1.96-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprananda21%2Funiconv" "/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/prananda21/uniconv
[INFO] finished tweaking git repo https://github.com/prananda21/uniconv
[INFO] tweaked toml for git repo https://github.com/prananda21/uniconv written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/prananda21/uniconv on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/prananda21/uniconv 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" "+beta-2026-04-21" "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/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" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2c37d364571f1fe4198a6927ed826dcd133b29631eb4b12d2e393f9d57abb06c
[INFO] running `Command { std: "docker" "start" "-a" "2c37d364571f1fe4198a6927ed826dcd133b29631eb4b12d2e393f9d57abb06c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2c37d364571f1fe4198a6927ed826dcd133b29631eb4b12d2e393f9d57abb06c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c37d364571f1fe4198a6927ed826dcd133b29631eb4b12d2e393f9d57abb06c", kill_on_drop: false }`
[INFO] [stdout] 2c37d364571f1fe4198a6927ed826dcd133b29631eb4b12d2e393f9d57abb06c
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 04599ef4a19bd90e289576a53a7dce10cd08defbfea4a2657d66619612da38da
[INFO] running `Command { std: "docker" "start" "-a" "04599ef4a19bd90e289576a53a7dce10cd08defbfea4a2657d66619612da38da", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.103
[INFO] [stderr]    Compiling unicode-ident v1.0.20
[INFO] [stderr]    Compiling anstyle-query v1.1.4
[INFO] [stderr]    Compiling anyhow v1.0.100
[INFO] [stderr]    Compiling clap_lex v0.7.6
[INFO] [stderr]    Compiling memchr v2.7.6
[INFO] [stderr]    Compiling serde_json v1.0.145
[INFO] [stderr]    Compiling fmt v0.1.0
[INFO] [stderr]    Compiling anstream v0.6.21
[INFO] [stderr]    Compiling clap_builder v4.5.50
[INFO] [stderr]    Compiling quote v1.0.41
[INFO] [stderr]    Compiling syn v2.0.108
[INFO] [stderr]    Compiling clap_derive v4.5.49
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling clap v4.5.50
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling uniconv v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `error::*`
[INFO] [stdout]  --> src/errors/mod.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub use error::*;
[INFO] [stdout]   |         ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `LengthResults` is never constructed
[INFO] [stdout]   --> src/conv/length.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct LengthResults {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `convert_to_all` is never used
[INFO] [stdout]    --> src/conv/length.rs:127:12
[INFO] [stdout]     |
[INFO] [stdout]  17 | impl LengthConverter {
[INFO] [stdout]     | -------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 127 |     pub fn convert_to_all(&self) -> Result<LengthResults> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `cm_to_km` is never used
[INFO] [stdout]    --> src/conv/length.rs:148:8
[INFO] [stdout]     |
[INFO] [stdout] 148 | pub fn cm_to_km(value: f64) -> Result<f64> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `cm_to_inch` is never used
[INFO] [stdout]    --> src/conv/length.rs:152:8
[INFO] [stdout]     |
[INFO] [stdout] 152 | pub fn cm_to_inch(value: f64) -> Result<f64> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `cm_to_mile` is never used
[INFO] [stdout]    --> src/conv/length.rs:156:8
[INFO] [stdout]     |
[INFO] [stdout] 156 | pub fn cm_to_mile(value: f64) -> Result<f64> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `inch_to_cm` is never used
[INFO] [stdout]    --> src/conv/length.rs:160:8
[INFO] [stdout]     |
[INFO] [stdout] 160 | pub fn inch_to_cm(value: f64) -> Result<f64> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `inch_to_km` is never used
[INFO] [stdout]    --> src/conv/length.rs:164:8
[INFO] [stdout]     |
[INFO] [stdout] 164 | pub fn inch_to_km(value: f64) -> Result<f64> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `inch_to_mile` is never used
[INFO] [stdout]    --> src/conv/length.rs:168:8
[INFO] [stdout]     |
[INFO] [stdout] 168 | pub fn inch_to_mile(value: f64) -> Result<f64> {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `km_to_cm` is never used
[INFO] [stdout]    --> src/conv/length.rs:172:8
[INFO] [stdout]     |
[INFO] [stdout] 172 | pub fn km_to_cm(value: f64) -> Result<f64> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `km_to_inch` is never used
[INFO] [stdout]    --> src/conv/length.rs:176:8
[INFO] [stdout]     |
[INFO] [stdout] 176 | pub fn km_to_inch(value: f64) -> Result<f64> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `km_to_mile` is never used
[INFO] [stdout]    --> src/conv/length.rs:180:8
[INFO] [stdout]     |
[INFO] [stdout] 180 | pub fn km_to_mile(value: f64) -> Result<f64> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mile_to_cm` is never used
[INFO] [stdout]    --> src/conv/length.rs:184:8
[INFO] [stdout]     |
[INFO] [stdout] 184 | pub fn mile_to_cm(value: f64) -> Result<f64> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mile_to_km` is never used
[INFO] [stdout]    --> src/conv/length.rs:188:8
[INFO] [stdout]     |
[INFO] [stdout] 188 | pub fn mile_to_km(value: f64) -> Result<f64> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mile_to_inch` is never used
[INFO] [stdout]    --> src/conv/length.rs:192:8
[INFO] [stdout]     |
[INFO] [stdout] 192 | pub fn mile_to_inch(value: f64) -> Result<f64> {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TemperatureResults` is never constructed
[INFO] [stdout]   --> src/conv/temperature.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct TemperatureResults {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `convert_to_all` is never used
[INFO] [stdout]   --> src/conv/temperature.rs:95:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl TemperatureConverter {
[INFO] [stdout]    | ------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 95 |     pub fn convert_to_all(&self) -> Result<TemperatureResults> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `celsius_to_fahrenheit` is never used
[INFO] [stdout]    --> src/conv/temperature.rs:115:8
[INFO] [stdout]     |
[INFO] [stdout] 115 | pub fn celsius_to_fahrenheit(celsius: f64) -> Result<f64> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `celsius_to_kelvin` is never used
[INFO] [stdout]    --> src/conv/temperature.rs:119:8
[INFO] [stdout]     |
[INFO] [stdout] 119 | pub fn celsius_to_kelvin(celsius: f64) -> Result<f64> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fahrenheit_to_celsius` is never used
[INFO] [stdout]    --> src/conv/temperature.rs:123:8
[INFO] [stdout]     |
[INFO] [stdout] 123 | pub fn fahrenheit_to_celsius(fahrenheit: f64) -> Result<f64> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fahrenheit_to_kelvin` is never used
[INFO] [stdout]    --> src/conv/temperature.rs:127:8
[INFO] [stdout]     |
[INFO] [stdout] 127 | pub fn fahrenheit_to_kelvin(fahrenheit: f64) -> Result<f64> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `kelvin_to_celsius` is never used
[INFO] [stdout]    --> src/conv/temperature.rs:131:8
[INFO] [stdout]     |
[INFO] [stdout] 131 | pub fn kelvin_to_celsius(kelvin: f64) -> Result<f64> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `kelvin_to_fahrenheit` is never used
[INFO] [stdout]    --> src/conv/temperature.rs:135:8
[INFO] [stdout]     |
[INFO] [stdout] 135 | pub fn kelvin_to_fahrenheit(kelvin: f64) -> Result<f64> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ValidationError` is never used
[INFO] [stdout]  --> src/errors/error.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub enum ValidationError {
[INFO] [stdout]   |          ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ConversionError` is never used
[INFO] [stdout]   --> src/errors/error.rs:25:10
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub enum ConversionError {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `UnitParseError` is never used
[INFO] [stdout]   --> src/errors/error.rs:46:10
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub enum UnitParseError {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `format_suggestions` is never used
[INFO] [stdout]   --> src/errors/error.rs:65:8
[INFO] [stdout]    |
[INFO] [stdout] 65 | pub fn format_suggestions(suggestions: &[&str]) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.57s
[INFO] running `Command { std: "docker" "inspect" "04599ef4a19bd90e289576a53a7dce10cd08defbfea4a2657d66619612da38da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04599ef4a19bd90e289576a53a7dce10cd08defbfea4a2657d66619612da38da", kill_on_drop: false }`
[INFO] [stdout] 04599ef4a19bd90e289576a53a7dce10cd08defbfea4a2657d66619612da38da
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dcf4f5c733a4b24248624d1b55cb24fc10800ac5ee9a308cc43124787258aed6
[INFO] running `Command { std: "docker" "start" "-a" "dcf4f5c733a4b24248624d1b55cb24fc10800ac5ee9a308cc43124787258aed6", kill_on_drop: false }`
[INFO] [stderr]    Compiling uniconv v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `error::*`
[INFO] [stdout]  --> src/errors/mod.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub use error::*;
[INFO] [stdout]   |         ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `LengthResults` is never constructed
[INFO] [stdout]   --> src/conv/length.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct LengthResults {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `convert_to_all` is never used
[INFO] [stdout]    --> src/conv/length.rs:127:12
[INFO] [stdout]     |
[INFO] [stdout]  17 | impl LengthConverter {
[INFO] [stdout]     | -------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 127 |     pub fn convert_to_all(&self) -> Result<LengthResults> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `cm_to_inch` is never used
[INFO] [stdout]    --> src/conv/length.rs:152:8
[INFO] [stdout]     |
[INFO] [stdout] 152 | pub fn cm_to_inch(value: f64) -> Result<f64> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `cm_to_mile` is never used
[INFO] [stdout]    --> src/conv/length.rs:156:8
[INFO] [stdout]     |
[INFO] [stdout] 156 | pub fn cm_to_mile(value: f64) -> Result<f64> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `inch_to_km` is never used
[INFO] [stdout]    --> src/conv/length.rs:164:8
[INFO] [stdout]     |
[INFO] [stdout] 164 | pub fn inch_to_km(value: f64) -> Result<f64> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `inch_to_mile` is never used
[INFO] [stdout]    --> src/conv/length.rs:168:8
[INFO] [stdout]     |
[INFO] [stdout] 168 | pub fn inch_to_mile(value: f64) -> Result<f64> {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `km_to_cm` is never used
[INFO] [stdout]    --> src/conv/length.rs:172:8
[INFO] [stdout]     |
[INFO] [stdout] 172 | pub fn km_to_cm(value: f64) -> Result<f64> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `km_to_inch` is never used
[INFO] [stdout]    --> src/conv/length.rs:176:8
[INFO] [stdout]     |
[INFO] [stdout] 176 | pub fn km_to_inch(value: f64) -> Result<f64> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mile_to_cm` is never used
[INFO] [stdout]    --> src/conv/length.rs:184:8
[INFO] [stdout]     |
[INFO] [stdout] 184 | pub fn mile_to_cm(value: f64) -> Result<f64> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mile_to_km` is never used
[INFO] [stdout]    --> src/conv/length.rs:188:8
[INFO] [stdout]     |
[INFO] [stdout] 188 | pub fn mile_to_km(value: f64) -> Result<f64> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mile_to_inch` is never used
[INFO] [stdout]    --> src/conv/length.rs:192:8
[INFO] [stdout]     |
[INFO] [stdout] 192 | pub fn mile_to_inch(value: f64) -> Result<f64> {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TemperatureResults` is never constructed
[INFO] [stdout]   --> src/conv/temperature.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct TemperatureResults {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `convert_to_all` is never used
[INFO] [stdout]   --> src/conv/temperature.rs:95:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl TemperatureConverter {
[INFO] [stdout]    | ------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 95 |     pub fn convert_to_all(&self) -> Result<TemperatureResults> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fahrenheit_to_kelvin` is never used
[INFO] [stdout]    --> src/conv/temperature.rs:127:8
[INFO] [stdout]     |
[INFO] [stdout] 127 | pub fn fahrenheit_to_kelvin(fahrenheit: f64) -> Result<f64> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `kelvin_to_celsius` is never used
[INFO] [stdout]    --> src/conv/temperature.rs:131:8
[INFO] [stdout]     |
[INFO] [stdout] 131 | pub fn kelvin_to_celsius(kelvin: f64) -> Result<f64> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `kelvin_to_fahrenheit` is never used
[INFO] [stdout]    --> src/conv/temperature.rs:135:8
[INFO] [stdout]     |
[INFO] [stdout] 135 | pub fn kelvin_to_fahrenheit(kelvin: f64) -> Result<f64> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ValidationError` is never used
[INFO] [stdout]  --> src/errors/error.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub enum ValidationError {
[INFO] [stdout]   |          ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ConversionError` is never used
[INFO] [stdout]   --> src/errors/error.rs:25:10
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub enum ConversionError {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `UnitParseError` is never used
[INFO] [stdout]   --> src/errors/error.rs:46:10
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub enum UnitParseError {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `format_suggestions` is never used
[INFO] [stdout]   --> src/errors/error.rs:65:8
[INFO] [stdout]    |
[INFO] [stdout] 65 | pub fn format_suggestions(suggestions: &[&str]) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.53s
[INFO] running `Command { std: "docker" "inspect" "dcf4f5c733a4b24248624d1b55cb24fc10800ac5ee9a308cc43124787258aed6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dcf4f5c733a4b24248624d1b55cb24fc10800ac5ee9a308cc43124787258aed6", kill_on_drop: false }`
[INFO] [stdout] dcf4f5c733a4b24248624d1b55cb24fc10800ac5ee9a308cc43124787258aed6
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+beta-2026-04-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4fe4ee41b51ebfb80102c729c5862f864b508d2eca6a7ccecbc699aabd536886
[INFO] running `Command { std: "docker" "start" "-a" "4fe4ee41b51ebfb80102c729c5862f864b508d2eca6a7ccecbc699aabd536886", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `error::*`
[INFO] [stderr]  --> src/errors/mod.rs:3:9
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub use error::*;
[INFO] [stderr]   |         ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `LengthResults` is never constructed
[INFO] [stderr]   --> src/conv/length.rs:10:12
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub struct LengthResults {
[INFO] [stderr]    |            ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `convert_to_all` is never used
[INFO] [stderr]    --> src/conv/length.rs:127:12
[INFO] [stderr]     |
[INFO] [stderr]  17 | impl LengthConverter {
[INFO] [stderr]     | -------------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 127 |     pub fn convert_to_all(&self) -> Result<LengthResults> {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `cm_to_inch` is never used
[INFO] [stderr]    --> src/conv/length.rs:152:8
[INFO] [stderr]     |
[INFO] [stderr] 152 | pub fn cm_to_inch(value: f64) -> Result<f64> {
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `cm_to_mile` is never used
[INFO] [stderr]    --> src/conv/length.rs:156:8
[INFO] [stderr]     |
[INFO] [stderr] 156 | pub fn cm_to_mile(value: f64) -> Result<f64> {
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `inch_to_km` is never used
[INFO] [stderr]    --> src/conv/length.rs:164:8
[INFO] [stderr]     |
[INFO] [stderr] 164 | pub fn inch_to_km(value: f64) -> Result<f64> {
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `inch_to_mile` is never used
[INFO] [stderr]    --> src/conv/length.rs:168:8
[INFO] [stderr]     |
[INFO] [stderr] 168 | pub fn inch_to_mile(value: f64) -> Result<f64> {
[INFO] [stderr]     |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `km_to_cm` is never used
[INFO] [stderr]    --> src/conv/length.rs:172:8
[INFO] [stderr]     |
[INFO] [stderr] 172 | pub fn km_to_cm(value: f64) -> Result<f64> {
[INFO] [stderr]     |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `km_to_inch` is never used
[INFO] [stderr]    --> src/conv/length.rs:176:8
[INFO] [stderr]     |
[INFO] [stderr] 176 | pub fn km_to_inch(value: f64) -> Result<f64> {
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `mile_to_cm` is never used
[INFO] [stderr]    --> src/conv/length.rs:184:8
[INFO] [stderr]     |
[INFO] [stderr] 184 | pub fn mile_to_cm(value: f64) -> Result<f64> {
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `mile_to_km` is never used
[INFO] [stderr]    --> src/conv/length.rs:188:8
[INFO] [stderr]     |
[INFO] [stderr] 188 | pub fn mile_to_km(value: f64) -> Result<f64> {
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `mile_to_inch` is never used
[INFO] [stderr]    --> src/conv/length.rs:192:8
[INFO] [stderr]     |
[INFO] [stderr] 192 | pub fn mile_to_inch(value: f64) -> Result<f64> {
[INFO] [stderr]     |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `TemperatureResults` is never constructed
[INFO] [stderr]   --> src/conv/temperature.rs:13:12
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub struct TemperatureResults {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `convert_to_all` is never used
[INFO] [stderr]   --> src/conv/temperature.rs:95:12
[INFO] [stderr]    |
[INFO] [stderr] 19 | impl TemperatureConverter {
[INFO] [stderr]    | ------------------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 95 |     pub fn convert_to_all(&self) -> Result<TemperatureResults> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `fahrenheit_to_kelvin` is never used
[INFO] [stderr]    --> src/conv/temperature.rs:127:8
[INFO] [stderr]     |
[INFO] [stderr] 127 | pub fn fahrenheit_to_kelvin(fahrenheit: f64) -> Result<f64> {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `kelvin_to_celsius` is never used
[INFO] [stderr]    --> src/conv/temperature.rs:131:8
[INFO] [stderr]     |
[INFO] [stderr] 131 | pub fn kelvin_to_celsius(kelvin: f64) -> Result<f64> {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `kelvin_to_fahrenheit` is never used
[INFO] [stderr]    --> src/conv/temperature.rs:135:8
[INFO] [stderr]     |
[INFO] [stderr] 135 | pub fn kelvin_to_fahrenheit(kelvin: f64) -> Result<f64> {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `ValidationError` is never used
[INFO] [stderr]  --> src/errors/error.rs:4:10
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub enum ValidationError {
[INFO] [stderr]   |          ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `ConversionError` is never used
[INFO] [stderr]   --> src/errors/error.rs:25:10
[INFO] [stderr]    |
[INFO] [stderr] 25 | pub enum ConversionError {
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `UnitParseError` is never used
[INFO] [stderr]   --> src/errors/error.rs:46:10
[INFO] [stderr]    |
[INFO] [stderr] 46 | pub enum UnitParseError {
[INFO] [stderr]    |          ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `format_suggestions` is never used
[INFO] [stderr]   --> src/errors/error.rs:65:8
[INFO] [stderr]    |
[INFO] [stderr] 65 | pub fn format_suggestions(suggestions: &[&str]) -> String {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `uniconv` (bin "uniconv" test) generated 21 warnings (run `cargo fix --bin "uniconv" -p uniconv --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/uniconv-56483705e58a64cc)
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test conv::length::tests::test_helper_functions ... ok
[INFO] [stdout] test conv::length::tests::test_inch_conversions ... ok
[INFO] [stdout] test conv::length::tests::test_invalid_conversions ... ok
[INFO] [stdout] test conv::length::tests::test_mile_conversions ... ok
[INFO] [stdout] test conv::temperature::tests::test_celsius_conversions ... ok
[INFO] [stdout] test conv::length::tests::test_km_conversions ... ok
[INFO] [stdout] test conv::temperature::tests::test_kelvin_conversions ... ok
[INFO] [stdout] test conv::temperature::tests::test_fahrenheit_conversions ... ok
[INFO] [stdout] test conv::temperature::tests::test_invalid_conversions ... ok
[INFO] [stdout] test conv::temperature::tests::test_helper_functions ... ok
[INFO] [stdout] test conv::length::tests::test_cm_conversions ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "4fe4ee41b51ebfb80102c729c5862f864b508d2eca6a7ccecbc699aabd536886", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4fe4ee41b51ebfb80102c729c5862f864b508d2eca6a7ccecbc699aabd536886", kill_on_drop: false }`
[INFO] [stdout] 4fe4ee41b51ebfb80102c729c5862f864b508d2eca6a7ccecbc699aabd536886
