[INFO] updating cached repository https://github.com/indutny/qcd
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 54097f9a952391cd23fa94b7e3ddd288627cf9f2
[INFO] testing indutny/qcd against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Findutny%2Fqcd" "/workspace/builds/worker-0/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/indutny/qcd on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/indutny/qcd
[INFO] finished tweaking git repo https://github.com/indutny/qcd
[INFO] tweaked toml for git repo https://github.com/indutny/qcd written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/indutny/qcd already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ce30b1aea29f12ae2426f5019fdae0526608fa9cf35d69616002887174cce5c8
[INFO] running `"docker" "start" "-a" "ce30b1aea29f12ae2426f5019fdae0526608fa9cf35d69616002887174cce5c8"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling rand v0.7.2
[INFO] [stderr]    Compiling qcd v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `crate::complex::*`
[INFO] [stderr]  --> src/lattice.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::complex::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::Index`
[INFO] [stderr]  --> src/lattice.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::ops::Index;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/lattice.rs:18:13
[INFO] [stderr]    |
[INFO] [stderr] 18 |         for i in 0..len {
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/lattice.rs:36:35
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn compute_staples(&self, i: usize) -> [Matrix; 6] {
[INFO] [stderr]    |                                   ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `SPREAD`
[INFO] [stderr]  --> src/color.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | const SPREAD: f64 = 0.5;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `EPSILON`
[INFO] [stderr]   --> src/color.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | const EPSILON: f64 = 1e-23;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `rng`
[INFO] [stderr]   --> src/color.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     rng: ThreadRng,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `gen`
[INFO] [stderr]   --> src/color.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn gen(&mut self) -> Matrix {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `gen_su2`
[INFO] [stderr]   --> src/color.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     fn gen_su2(&mut self) -> [Complex; 4] {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/complex.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub fn new(re: f64, im: f64) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `norm`
[INFO] [stderr]   --> src/complex.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     pub fn norm(self: Self) -> f64 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/cvector.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn new(values: [Complex; 3]) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `norm_sqr`
[INFO] [stderr]   --> src/cvector.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub fn norm_sqr(&self) -> f64 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `norm`
[INFO] [stderr]   --> src/cvector.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     pub fn norm(&self) -> f64 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `rescale`
[INFO] [stderr]   --> src/cvector.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn rescale(&self, factor: Complex) -> CVector {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `dot`
[INFO] [stderr]   --> src/cvector.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     pub fn dot(lhs: &CVector, rhs: &CVector) -> Complex {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Lattice`
[INFO] [stderr]  --> src/lattice.rs:6:12
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub struct Lattice {
[INFO] [stderr]   |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `cold_with_size`
[INFO] [stderr]   --> src/lattice.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn cold_with_size(size: usize) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `sweep`
[INFO] [stderr]   --> src/lattice.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 | /     pub fn sweep<F>(&mut self, mut func: F)
[INFO] [stderr] 26 | |     where
[INFO] [stderr] 27 | |         F: FnMut(&mut Matrix, &[Matrix; 6]),
[INFO] [stderr] 28 | |     {
[INFO] [stderr] ...  |
[INFO] [stderr] 33 | |         }
[INFO] [stderr] 34 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `compute_staples`
[INFO] [stderr]   --> src/lattice.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn compute_staples(&self, i: usize) -> [Matrix; 6] {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Coordinate`
[INFO] [stderr]   --> src/lattice.rs:41:1
[INFO] [stderr]    |
[INFO] [stderr] 41 | type Coordinate = (usize, usize, usize, usize);
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `EPSILON`
[INFO] [stderr]  --> src/matrix.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | const EPSILON: f64 = 1e-23;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `identity`
[INFO] [stderr]   --> src/matrix.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     pub fn identity() -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `conj`
[INFO] [stderr]   --> src/matrix.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub fn conj(&self) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `det`
[INFO] [stderr]   --> src/matrix.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     pub fn det(&self) -> Complex {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `unitarize`
[INFO] [stderr]   --> src/matrix.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |     pub fn unitarize(&self) -> Matrix {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 26 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.40s
[INFO] running `"docker" "inspect" "ce30b1aea29f12ae2426f5019fdae0526608fa9cf35d69616002887174cce5c8"`
[INFO] running `"docker" "rm" "-f" "ce30b1aea29f12ae2426f5019fdae0526608fa9cf35d69616002887174cce5c8"`
[INFO] [stdout] ce30b1aea29f12ae2426f5019fdae0526608fa9cf35d69616002887174cce5c8
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 70cf57b729b2993de26f065511ba50400767865c70c9800eeb628369c4675c3f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "70cf57b729b2993de26f065511ba50400767865c70c9800eeb628369c4675c3f"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling qcd v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `crate::complex::*`
[INFO] [stderr]  --> src/lattice.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::complex::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::Index`
[INFO] [stderr]  --> src/lattice.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::ops::Index;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/lattice.rs:18:13
[INFO] [stderr]    |
[INFO] [stderr] 18 |         for i in 0..len {
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/lattice.rs:36:35
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn compute_staples(&self, i: usize) -> [Matrix; 6] {
[INFO] [stderr]    |                                   ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `SPREAD`
[INFO] [stderr]  --> src/color.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | const SPREAD: f64 = 0.5;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `EPSILON`
[INFO] [stderr]   --> src/color.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | const EPSILON: f64 = 1e-23;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `rng`
[INFO] [stderr]   --> src/color.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     rng: ThreadRng,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `gen`
[INFO] [stderr]   --> src/color.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn gen(&mut self) -> Matrix {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `gen_su2`
[INFO] [stderr]   --> src/color.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     fn gen_su2(&mut self) -> [Complex; 4] {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/complex.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub fn new(re: f64, im: f64) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `norm`
[INFO] [stderr]   --> src/complex.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     pub fn norm(self: Self) -> f64 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/cvector.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn new(values: [Complex; 3]) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `norm_sqr`
[INFO] [stderr]   --> src/cvector.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub fn norm_sqr(&self) -> f64 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `norm`
[INFO] [stderr]   --> src/cvector.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     pub fn norm(&self) -> f64 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `rescale`
[INFO] [stderr]   --> src/cvector.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn rescale(&self, factor: Complex) -> CVector {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `dot`
[INFO] [stderr]   --> src/cvector.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     pub fn dot(lhs: &CVector, rhs: &CVector) -> Complex {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Lattice`
[INFO] [stderr]  --> src/lattice.rs:6:12
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub struct Lattice {
[INFO] [stderr]   |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `cold_with_size`
[INFO] [stderr]   --> src/lattice.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn cold_with_size(size: usize) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `sweep`
[INFO] [stderr]   --> src/lattice.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 | /     pub fn sweep<F>(&mut self, mut func: F)
[INFO] [stderr] 26 | |     where
[INFO] [stderr] 27 | |         F: FnMut(&mut Matrix, &[Matrix; 6]),
[INFO] [stderr] 28 | |     {
[INFO] [stderr] ...  |
[INFO] [stderr] 33 | |         }
[INFO] [stderr] 34 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `compute_staples`
[INFO] [stderr]   --> src/lattice.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn compute_staples(&self, i: usize) -> [Matrix; 6] {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Coordinate`
[INFO] [stderr]   --> src/lattice.rs:41:1
[INFO] [stderr]    |
[INFO] [stderr] 41 | type Coordinate = (usize, usize, usize, usize);
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `EPSILON`
[INFO] [stderr]  --> src/matrix.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | const EPSILON: f64 = 1e-23;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `identity`
[INFO] [stderr]   --> src/matrix.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     pub fn identity() -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `conj`
[INFO] [stderr]   --> src/matrix.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub fn conj(&self) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `det`
[INFO] [stderr]   --> src/matrix.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     pub fn det(&self) -> Complex {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `unitarize`
[INFO] [stderr]   --> src/matrix.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |     pub fn unitarize(&self) -> Matrix {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 26 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::complex::*`
[INFO] [stderr]  --> src/lattice.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::complex::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::Index`
[INFO] [stderr]  --> src/lattice.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::ops::Index;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/lattice.rs:18:13
[INFO] [stderr]    |
[INFO] [stderr] 18 |         for i in 0..len {
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/lattice.rs:36:35
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn compute_staples(&self, i: usize) -> [Matrix; 6] {
[INFO] [stderr]    |                                   ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lattice`
[INFO] [stderr]   --> src/lattice.rs:49:13
[INFO] [stderr]    |
[INFO] [stderr] 49 |         let lattice = Lattice::cold_with_size(8);
[INFO] [stderr]    |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_lattice`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `size`
[INFO] [stderr]  --> src/lattice.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     size: usize,
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `links`
[INFO] [stderr]  --> src/lattice.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     links: Vec<[Matrix; 4]>,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `sweep`
[INFO] [stderr]   --> src/lattice.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 | /     pub fn sweep<F>(&mut self, mut func: F)
[INFO] [stderr] 26 | |     where
[INFO] [stderr] 27 | |         F: FnMut(&mut Matrix, &[Matrix; 6]),
[INFO] [stderr] 28 | |     {
[INFO] [stderr] ...  |
[INFO] [stderr] 33 | |         }
[INFO] [stderr] 34 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `compute_staples`
[INFO] [stderr]   --> src/lattice.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn compute_staples(&self, i: usize) -> [Matrix; 6] {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Coordinate`
[INFO] [stderr]   --> src/lattice.rs:41:1
[INFO] [stderr]    |
[INFO] [stderr] 41 | type Coordinate = (usize, usize, usize, usize);
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 10 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.76s
[INFO] running `"docker" "inspect" "70cf57b729b2993de26f065511ba50400767865c70c9800eeb628369c4675c3f"`
[INFO] running `"docker" "rm" "-f" "70cf57b729b2993de26f065511ba50400767865c70c9800eeb628369c4675c3f"`
[INFO] [stdout] 70cf57b729b2993de26f065511ba50400767865c70c9800eeb628369c4675c3f
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c2b3829ed5bf60abc49c5676243561941f2199139c007ab330e807d6188796b1
[INFO] running `"docker" "start" "-a" "c2b3829ed5bf60abc49c5676243561941f2199139c007ab330e807d6188796b1"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: unused import: `crate::complex::*`
[INFO] [stderr]  --> src/lattice.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::complex::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::Index`
[INFO] [stderr]  --> src/lattice.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::ops::Index;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/lattice.rs:18:13
[INFO] [stderr]    |
[INFO] [stderr] 18 |         for i in 0..len {
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::complex::*`
[INFO] [stderr]  --> src/lattice.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::complex::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/lattice.rs:36:35
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn compute_staples(&self, i: usize) -> [Matrix; 6] {
[INFO] [stderr]    |                                   ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::Index`
[INFO] [stderr]  --> src/lattice.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::ops::Index;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lattice`
[INFO] [stderr]   --> src/lattice.rs:49:13
[INFO] [stderr]    |
[INFO] [stderr] 49 |         let lattice = Lattice::cold_with_size(8);
[INFO] [stderr]    |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_lattice`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `size`
[INFO] [stderr]  --> src/lattice.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     size: usize,
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/lattice.rs:18:13
[INFO] [stderr]    |
[INFO] [stderr] 18 |         for i in 0..len {
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `links`
[INFO] [stderr]  --> src/lattice.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     links: Vec<[Matrix; 4]>,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/lattice.rs:36:35
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn compute_staples(&self, i: usize) -> [Matrix; 6] {
[INFO] [stderr]    |                                   ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `SPREAD`
[INFO] [stderr]  --> src/color.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | const SPREAD: f64 = 0.5;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `sweep`
[INFO] [stderr]   --> src/lattice.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 | /     pub fn sweep<F>(&mut self, mut func: F)
[INFO] [stderr] 26 | |     where
[INFO] [stderr] 27 | |         F: FnMut(&mut Matrix, &[Matrix; 6]),
[INFO] [stderr] 28 | |     {
[INFO] [stderr] ...  |
[INFO] [stderr] 33 | |         }
[INFO] [stderr] 34 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `compute_staples`
[INFO] [stderr]   --> src/lattice.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn compute_staples(&self, i: usize) -> [Matrix; 6] {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Coordinate`
[INFO] [stderr]   --> src/lattice.rs:41:1
[INFO] [stderr]    |
[INFO] [stderr] 41 | type Coordinate = (usize, usize, usize, usize);
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 10 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `EPSILON`
[INFO] [stderr]   --> src/color.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | const EPSILON: f64 = 1e-23;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `rng`
[INFO] [stderr]   --> src/color.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     rng: ThreadRng,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `gen`
[INFO] [stderr]   --> src/color.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn gen(&mut self) -> Matrix {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `gen_su2`
[INFO] [stderr]   --> src/color.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     fn gen_su2(&mut self) -> [Complex; 4] {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/complex.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub fn new(re: f64, im: f64) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `norm`
[INFO] [stderr]   --> src/complex.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     pub fn norm(self: Self) -> f64 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/cvector.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn new(values: [Complex; 3]) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `norm_sqr`
[INFO] [stderr]   --> src/cvector.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub fn norm_sqr(&self) -> f64 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `norm`
[INFO] [stderr]   --> src/cvector.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     pub fn norm(&self) -> f64 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `rescale`
[INFO] [stderr]   --> src/cvector.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn rescale(&self, factor: Complex) -> CVector {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `dot`
[INFO] [stderr]   --> src/cvector.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     pub fn dot(lhs: &CVector, rhs: &CVector) -> Complex {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Lattice`
[INFO] [stderr]  --> src/lattice.rs:6:12
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub struct Lattice {
[INFO] [stderr]   |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `cold_with_size`
[INFO] [stderr]   --> src/lattice.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn cold_with_size(size: usize) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `sweep`
[INFO] [stderr]   --> src/lattice.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 | /     pub fn sweep<F>(&mut self, mut func: F)
[INFO] [stderr] 26 | |     where
[INFO] [stderr] 27 | |         F: FnMut(&mut Matrix, &[Matrix; 6]),
[INFO] [stderr] 28 | |     {
[INFO] [stderr] ...  |
[INFO] [stderr] 33 | |         }
[INFO] [stderr] 34 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `compute_staples`
[INFO] [stderr]   --> src/lattice.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn compute_staples(&self, i: usize) -> [Matrix; 6] {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Coordinate`
[INFO] [stderr]   --> src/lattice.rs:41:1
[INFO] [stderr]    |
[INFO] [stderr] 41 | type Coordinate = (usize, usize, usize, usize);
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `EPSILON`
[INFO] [stderr]  --> src/matrix.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | const EPSILON: f64 = 1e-23;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `identity`
[INFO] [stderr]   --> src/matrix.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     pub fn identity() -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `conj`
[INFO] [stderr]   --> src/matrix.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub fn conj(&self) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `det`
[INFO] [stderr]   --> src/matrix.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     pub fn det(&self) -> Complex {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `unitarize`
[INFO] [stderr]   --> src/matrix.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |     pub fn unitarize(&self) -> Matrix {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 26 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/qcd-6f4757e75033c657
[INFO] [stdout] 
[INFO] [stdout] running 20 tests
[INFO] [stdout] test complex::tests::it_should_add ... ok
[INFO] [stdout] test complex::tests::it_should_conjugate ... ok
[INFO] [stdout] test complex::tests::it_should_multiply_conjugates ... ok
[INFO] [stdout] test complex::tests::it_should_sub ... ok
[INFO] [stdout] test cvector::tests::it_should_add ... ok
[INFO] [stdout] test cvector::tests::it_should_dot ... ok
[INFO] [stdout] test cvector::tests::it_should_rescale ... ok
[INFO] [stdout] test cvector::tests::it_should_sub ... ok
[INFO] [stdout] test complex::tests::it_should_multiply ... ok
[INFO] [stdout] test complex::tests::it_should_divide ... ok
[INFO] [stdout] test color::tests::it_should_add ... ok
[INFO] [stdout] test matrix::tests::it_should_unitarize ... ok
[INFO] [stdout] test matrix::tests::it_should_conj ... ok
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/qcd-7e757549672489a8
[INFO] [stdout] test complex::tests::it_should_norm_sqr ... ok
[INFO] [stdout] test matrix::tests::it_should_sub ... ok
[INFO] [stdout] test cvector::tests::it_should_norm ... ok
[INFO] [stdout] test lattice::tests::it_should_init ... ok
[INFO] [stdout] test matrix::tests::it_should_add ... ok
[INFO] [stdout] test matrix::tests::it_should_mul ... ok
[INFO] [stdout] test matrix::tests::it_should_det ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 20 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests qcd
[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
[INFO] [stdout] 
[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
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "c2b3829ed5bf60abc49c5676243561941f2199139c007ab330e807d6188796b1"`
[INFO] running `"docker" "rm" "-f" "c2b3829ed5bf60abc49c5676243561941f2199139c007ab330e807d6188796b1"`
[INFO] [stdout] c2b3829ed5bf60abc49c5676243561941f2199139c007ab330e807d6188796b1