[INFO] cloning repository https://github.com/y-kitamu/numeric
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/y-kitamu/numeric" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fy-kitamu%2Fnumeric", kill_on_drop: false }`
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[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e2f6f768d5ca55d0e0acc19c3bc9743ff866b65f
[INFO] checking y-kitamu/numeric against master#642c19bfc3a5c1de985bf5d0cc8207ac9d22708a for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fy-kitamu%2Fnumeric" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
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[INFO] started tweaking git repo https://github.com/y-kitamu/numeric
[INFO] removed 0 missing examples
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[INFO] tweaked toml for git repo https://github.com/y-kitamu/numeric written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/y-kitamu/numeric on toolchain 642c19bfc3a5c1de985bf5d0cc8207ac9d22708a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/y-kitamu/numeric 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" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
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[INFO] [stdout] warning: struct `SVD` is never constructed
[INFO] [stdout]  --> src/linalg/svd.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct SVD<T>
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/linalg/svd.rs:24:12
[INFO] [stdout]     |
[INFO] [stdout]  20 | / impl<T> SVD<T>
[INFO] [stdout]  21 | | where
[INFO] [stdout]  22 | |     T: MatLinAlgBound,
[INFO] [stdout]     | |______________________- associated items in this implementation
[INFO] [stdout]  23 |   {
[INFO] [stdout]  24 |       pub fn new(a: Matrix<T>) -> Self {
[INFO] [stdout]     |              ^^^
[INFO] [stdout] ...
[INFO] [stdout]  48 |       fn decompose(&mut self, mut a: Matrix<T>) {
[INFO] [stdout]     |          ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 203 |       fn reorder(&mut self) {}
[INFO] [stdout]     |          ^^^^^^^
[INFO] [stdout] 204 |
[INFO] [stdout] 205 |       pub fn solve(&self, b: &[T], x: &mut [T]) -> Result<()> {
[INFO] [stdout]     |              ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 231 |       pub fn solve_mat(&self, b: &Matrix<T>, x: &mut Matrix<T>) -> Result<()> {
[INFO] [stdout]     |              ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 245 |       pub fn rank(&self) -> usize {
[INFO] [stdout]     |              ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 255 |       pub fn nullity(&self) -> usize {
[INFO] [stdout]     |              ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 265 |       pub fn range(&self) -> Matrix<T> {
[INFO] [stdout]     |              ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 280 |       pub fn nullspace(&self) -> Matrix<T> {
[INFO] [stdout]     |              ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/linalg/svd.rs:237:13
[INFO] [stdout]     |
[INFO] [stdout] 237 |             self.solve(&b.get_col(j), &mut tmp);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 237 |             let _ = self.solve(&b.get_col(j), &mut tmp);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> examples/interp2d.rs:57:56
[INFO] [stdout]    |
[INFO] [stdout] 57 |         if let Err(_) = std::fs::create_dir_all(out_dir.clone()) {
[INFO] [stdout]    |                                                        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `Path` does not implement `Clone`, so calling `clone` on `&Path` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout] 57 -         if let Err(_) = std::fs::create_dir_all(out_dir.clone()) {
[INFO] [stdout] 57 +         if let Err(_) = std::fs::create_dir_all(out_dir) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> examples/interp1d.rs:154:56
[INFO] [stdout]     |
[INFO] [stdout] 154 |         if let Err(_) = std::fs::create_dir_all(out_dir.clone()) {
[INFO] [stdout]     |                                                        ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `Path` does not implement `Clone`, so calling `clone` on `&Path` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 154 -         if let Err(_) = std::fs::create_dir_all(out_dir.clone()) {
[INFO] [stdout] 154 +         if let Err(_) = std::fs::create_dir_all(out_dir) {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SVD` is never constructed
[INFO] [stdout]  --> src/linalg/svd.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct SVD<T>
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/linalg/svd.rs:24:12
[INFO] [stdout]     |
[INFO] [stdout]  20 | / impl<T> SVD<T>
[INFO] [stdout]  21 | | where
[INFO] [stdout]  22 | |     T: MatLinAlgBound,
[INFO] [stdout]     | |______________________- associated items in this implementation
[INFO] [stdout]  23 |   {
[INFO] [stdout]  24 |       pub fn new(a: Matrix<T>) -> Self {
[INFO] [stdout]     |              ^^^
[INFO] [stdout] ...
[INFO] [stdout]  48 |       fn decompose(&mut self, mut a: Matrix<T>) {
[INFO] [stdout]     |          ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 203 |       fn reorder(&mut self) {}
[INFO] [stdout]     |          ^^^^^^^
[INFO] [stdout] 204 |
[INFO] [stdout] 205 |       pub fn solve(&self, b: &[T], x: &mut [T]) -> Result<()> {
[INFO] [stdout]     |              ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 231 |       pub fn solve_mat(&self, b: &Matrix<T>, x: &mut Matrix<T>) -> Result<()> {
[INFO] [stdout]     |              ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 245 |       pub fn rank(&self) -> usize {
[INFO] [stdout]     |              ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 255 |       pub fn nullity(&self) -> usize {
[INFO] [stdout]     |              ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 265 |       pub fn range(&self) -> Matrix<T> {
[INFO] [stdout]     |              ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 280 |       pub fn nullspace(&self) -> Matrix<T> {
[INFO] [stdout]     |              ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_svd` is never used
[INFO] [stdout]    --> src/linalg/svd.rs:301:8
[INFO] [stdout]     |
[INFO] [stdout] 301 |     fn test_svd() {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/linalg/svd.rs:237:13
[INFO] [stdout]     |
[INFO] [stdout] 237 |             self.solve(&b.get_col(j), &mut tmp);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 237 |             let _ = self.solve(&b.get_col(j), &mut tmp);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.87s
[INFO] running `Command { std: "docker" "inspect" "b490f3fda01734ac1995596c0329d14ff00520d79db305ec190322cd565648e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b490f3fda01734ac1995596c0329d14ff00520d79db305ec190322cd565648e3", kill_on_drop: false }`
[INFO] [stdout] b490f3fda01734ac1995596c0329d14ff00520d79db305ec190322cd565648e3
