[INFO] fetching crate rsml 0.1.0...
[INFO] checking rsml-0.1.0 against try#93086cfebfccb79083c59d0d3b2052944bba643c for pr-146440-1
[INFO] extracting crate rsml 0.1.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate rsml 0.1.0
[INFO] finished tweaking crates.io crate rsml 0.1.0
[INFO] tweaked toml for crates.io crate rsml 0.1.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rsml 0.1.0 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 20 packages to latest compatible versions
[INFO] [stderr]       Adding rand v0.6.5 (available: v0.10.1)
[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] [stderr] warning: Cargo.toml: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr] warning: `rsml` (manifest) generated 1 warning
[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] be3e953aa608d547990eb197cf1d89ad577d01466ae6c71312135cb037008a57
[INFO] running `Command { std: "docker" "start" "-a" "be3e953aa608d547990eb197cf1d89ad577d01466ae6c71312135cb037008a57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "be3e953aa608d547990eb197cf1d89ad577d01466ae6c71312135cb037008a57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be3e953aa608d547990eb197cf1d89ad577d01466ae6c71312135cb037008a57", kill_on_drop: false }`
[INFO] [stdout] be3e953aa608d547990eb197cf1d89ad577d01466ae6c71312135cb037008a57
[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] a6f0b273845895a6208a8e21c9574c696130cfa265475ec4b17ea0f0de7eb85c
[INFO] running `Command { std: "docker" "start" "-a" "a6f0b273845895a6208a8e21c9574c696130cfa265475ec4b17ea0f0de7eb85c", kill_on_drop: false }`
[INFO] [stderr] warning: Cargo.toml: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr] warning: `rsml` (manifest) generated 1 warning
[INFO] [stderr]    Compiling autocfg v0.1.8
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling libc v0.2.186
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking rsml v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]   --> src/classification/k_means.rs:91:9
[INFO] [stdout]    |
[INFO] [stdout] 91 |     use super::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/distance/chebyshev.rs:15:76
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn calc_distance(&self, a: &Vec<f64>, b: &Vec<f64>) -> Result<f64, Box<Error>> {
[INFO] [stdout]    |                                                                            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[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] 15 |     fn calc_distance(&self, a: &Vec<f64>, b: &Vec<f64>) -> Result<f64, Box<dyn Error>> {
[INFO] [stdout]    |                                                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/distance/chebyshev.rs:15:76
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn calc_distance(&self, a: &Vec<f64>, b: &Vec<f64>) -> Result<f64, Box<Error>> {
[INFO] [stdout]    |                                                                            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[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] 15 |     fn calc_distance(&self, a: &Vec<f64>, b: &Vec<f64>) -> Result<f64, Box<dyn Error>> {
[INFO] [stdout]    |                                                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/classification/k_means.rs:51:17
[INFO] [stdout]    |
[INFO] [stdout] 51 |             let mut clusters = &mut self.clusters;
[INFO] [stdout]    |                 ----^^^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `KMeans` is never constructed
[INFO] [stdout]  --> src/classification/k_means.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct KMeans<D: Distance> {
[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] warning: fields `k`, `data`, `clusters`, and `distance` are never read
[INFO] [stdout]   --> src/classification/k_means.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout]  9 | pub struct KMeans<D: Distance> {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] 10 |     k: usize,
[INFO] [stdout]    |     ^
[INFO] [stdout] 11 |     data: Vec<Vec<f64>>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 12 |     clusters: Vec<Cluster>,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 13 |     distance: D,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `cluster_to_centroids` are never used
[INFO] [stdout]   --> src/classification/k_means.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl<D: Distance> KMeans<D> {
[INFO] [stdout]    | --------------------------- associated items in this implementation
[INFO] [stdout] 17 |     fn new(data: Vec<Vec<f64>>, k: usize, distance: D) -> Result<Self, Box<dyn Error>> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |     fn cluster_to_centroids(&mut self) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `centroid` and `elements` are never read
[INFO] [stdout]   --> src/classification/k_means.rs:76:5
[INFO] [stdout]    |
[INFO] [stdout] 75 | struct Cluster {
[INFO] [stdout]    |        ------- fields in this struct
[INFO] [stdout] 76 |     centroid: usize,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 77 |     elements: Vec<usize>,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Cluster` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/classification/k_means.rs:81:8
[INFO] [stdout]    |
[INFO] [stdout] 80 | impl Cluster {
[INFO] [stdout]    | ------------ associated function in this implementation
[INFO] [stdout] 81 |     fn new(centroid: usize) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rsml` (lib) due to 1 previous error; 6 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/classification/k_means.rs:51:17
[INFO] [stdout]    |
[INFO] [stdout] 51 |             let mut clusters = &mut self.clusters;
[INFO] [stdout]    |                 ----^^^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `KMeans` is never constructed
[INFO] [stdout]  --> src/classification/k_means.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct KMeans<D: Distance> {
[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] warning: fields `k`, `data`, `clusters`, and `distance` are never read
[INFO] [stdout]   --> src/classification/k_means.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout]  9 | pub struct KMeans<D: Distance> {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] 10 |     k: usize,
[INFO] [stdout]    |     ^
[INFO] [stdout] 11 |     data: Vec<Vec<f64>>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 12 |     clusters: Vec<Cluster>,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 13 |     distance: D,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `cluster_to_centroids` are never used
[INFO] [stdout]   --> src/classification/k_means.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl<D: Distance> KMeans<D> {
[INFO] [stdout]    | --------------------------- associated items in this implementation
[INFO] [stdout] 17 |     fn new(data: Vec<Vec<f64>>, k: usize, distance: D) -> Result<Self, Box<dyn Error>> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |     fn cluster_to_centroids(&mut self) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `centroid` and `elements` are never read
[INFO] [stdout]   --> src/classification/k_means.rs:76:5
[INFO] [stdout]    |
[INFO] [stdout] 75 | struct Cluster {
[INFO] [stdout]    |        ------- fields in this struct
[INFO] [stdout] 76 |     centroid: usize,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 77 |     elements: Vec<usize>,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Cluster` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/classification/k_means.rs:81:8
[INFO] [stdout]    |
[INFO] [stdout] 80 | impl Cluster {
[INFO] [stdout]    | ------------ associated function in this implementation
[INFO] [stdout] 81 |     fn new(centroid: usize) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rsml` (lib test) due to 1 previous error; 7 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "a6f0b273845895a6208a8e21c9574c696130cfa265475ec4b17ea0f0de7eb85c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6f0b273845895a6208a8e21c9574c696130cfa265475ec4b17ea0f0de7eb85c", kill_on_drop: false }`
[INFO] [stdout] a6f0b273845895a6208a8e21c9574c696130cfa265475ec4b17ea0f0de7eb85c
