[INFO] cloning repository https://github.com/joefttm/rust-by-example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/joefttm/rust-by-example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjoefttm%2Frust-by-example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjoefttm%2Frust-by-example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1a8c6eb292706617bad855ca29e8c83fe87cdf9e
[INFO] testing joefttm/rust-by-example against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjoefttm%2Frust-by-example" "/workspace/builds/worker-81/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-81/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/joefttm/rust-by-example on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/joefttm/rust-by-example
[INFO] finished tweaking git repo https://github.com/joefttm/rust-by-example
[INFO] tweaked toml for git repo https://github.com/joefttm/rust-by-example written to /workspace/builds/worker-81/source/Cargo.toml
[INFO] crate git repo https://github.com/joefttm/rust-by-example already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7e83811bb045a25f2e7a5731b3217f73f60c9a4100466da35f41e0429223d77e
[INFO] running `Command { std: "docker" "start" "-a" "7e83811bb045a25f2e7a5731b3217f73f60c9a4100466da35f41e0429223d77e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7e83811bb045a25f2e7a5731b3217f73f60c9a4100466da35f41e0429223d77e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e83811bb045a25f2e7a5731b3217f73f60c9a4100466da35f41e0429223d77e", kill_on_drop: false }`
[INFO] [stdout] 7e83811bb045a25f2e7a5731b3217f73f60c9a4100466da35f41e0429223d77e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ed63c1f29b1410490d0a83b9b8e264ab1c1d76ca9ba3f63038a8ee8059c92834
[INFO] running `Command { std: "docker" "start" "-a" "ed63c1f29b1410490d0a83b9b8e264ab1c1d76ca9ba3f63038a8ee8059c92834", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-by-example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::fmt::Error`
[INFO] [stdout]  --> src/custom.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `left_edge`
[INFO] [stdout]    --> src/custom.rs:111:19
[INFO] [stdout]     |
[INFO] [stdout] 111 |     let Point {x: left_edge, y: top_edge} = point;
[INFO] [stdout]     |                   ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_left_edge`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `top_edge`
[INFO] [stdout]    --> src/custom.rs:111:33
[INFO] [stdout]     |
[INFO] [stdout] 111 |     let Point {x: left_edge, y: top_edge} = point;
[INFO] [stdout]     |                                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_top_edge`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/custom.rs:124:9
[INFO] [stdout]     |
[INFO] [stdout] 124 |     let a = [1,2,6];
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `joe_format_print`
[INFO] [stdout]   --> src/hello.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn joe_format_print() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `transpose`
[INFO] [stdout]   --> src/primitives.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn transpose(matrix: &mut Matrix) -> &Matrix {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `joe_test_primitive`
[INFO] [stdout]   --> src/primitives.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn joe_test_primitive() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `x`
[INFO] [stdout]  --> src/custom.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     x: f32,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `y`
[INFO] [stdout]  --> src/custom.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     y: f32,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/custom.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn new(x1: f32, y1: f32, x2: f32 ,y2 : f32) -> Result<Rectangle, &'static str> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `rect_area`
[INFO] [stdout]   --> src/custom.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn rect_area(&self) -> f32 {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `WebEvent`
[INFO] [stdout]   --> src/custom.rs:36:6
[INFO] [stdout]    |
[INFO] [stdout] 36 | enum WebEvent {
[INFO] [stdout]    |      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `inspect`
[INFO] [stdout]   --> src/custom.rs:44:4
[INFO] [stdout]    |
[INFO] [stdout] 44 | fn inspect(event: WebEvent) {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `List`
[INFO] [stdout]   --> src/custom.rs:59:6
[INFO] [stdout]    |
[INFO] [stdout] 59 | enum List {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/custom.rs:65:8
[INFO] [stdout]    |
[INFO] [stdout] 65 |     fn new() -> List {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `prepend`
[INFO] [stdout]   --> src/custom.rs:70:8
[INFO] [stdout]    |
[INFO] [stdout] 70 |     fn prepend(self, element: u32) -> List {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `len`
[INFO] [stdout]   --> src/custom.rs:74:8
[INFO] [stdout]    |
[INFO] [stdout] 74 |     fn len(&self) -> u32 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `stringify`
[INFO] [stdout]   --> src/custom.rs:82:8
[INFO] [stdout]    |
[INFO] [stdout] 82 |     fn stringify(&self) -> String {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `joe_test_custom_type`
[INFO] [stdout]   --> src/custom.rs:96:8
[INFO] [stdout]    |
[INFO] [stdout] 96 | pub fn joe_test_custom_type() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.13s
[INFO] running `Command { std: "docker" "inspect" "ed63c1f29b1410490d0a83b9b8e264ab1c1d76ca9ba3f63038a8ee8059c92834", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed63c1f29b1410490d0a83b9b8e264ab1c1d76ca9ba3f63038a8ee8059c92834", kill_on_drop: false }`
[INFO] [stdout] ed63c1f29b1410490d0a83b9b8e264ab1c1d76ca9ba3f63038a8ee8059c92834
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e3186d2fe3a625c521fffeea2bf315efc68494ec39409ae04e04a5b9f5d82d7a
[INFO] running `Command { std: "docker" "start" "-a" "e3186d2fe3a625c521fffeea2bf315efc68494ec39409ae04e04a5b9f5d82d7a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rust-by-example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::fmt::Error`
[INFO] [stdout]  --> src/custom.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `left_edge`
[INFO] [stdout]    --> src/custom.rs:111:19
[INFO] [stdout]     |
[INFO] [stdout] 111 |     let Point {x: left_edge, y: top_edge} = point;
[INFO] [stdout]     |                   ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_left_edge`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `top_edge`
[INFO] [stdout]    --> src/custom.rs:111:33
[INFO] [stdout]     |
[INFO] [stdout] 111 |     let Point {x: left_edge, y: top_edge} = point;
[INFO] [stdout]     |                                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_top_edge`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/custom.rs:124:9
[INFO] [stdout]     |
[INFO] [stdout] 124 |     let a = [1,2,6];
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `joe_format_print`
[INFO] [stdout]   --> src/hello.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn joe_format_print() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `transpose`
[INFO] [stdout]   --> src/primitives.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn transpose(matrix: &mut Matrix) -> &Matrix {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `joe_test_primitive`
[INFO] [stdout]   --> src/primitives.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn joe_test_primitive() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `x`
[INFO] [stdout]  --> src/custom.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     x: f32,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `y`
[INFO] [stdout]  --> src/custom.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     y: f32,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/custom.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn new(x1: f32, y1: f32, x2: f32 ,y2 : f32) -> Result<Rectangle, &'static str> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `rect_area`
[INFO] [stdout]   --> src/custom.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn rect_area(&self) -> f32 {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `WebEvent`
[INFO] [stdout]   --> src/custom.rs:36:6
[INFO] [stdout]    |
[INFO] [stdout] 36 | enum WebEvent {
[INFO] [stdout]    |      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `inspect`
[INFO] [stdout]   --> src/custom.rs:44:4
[INFO] [stdout]    |
[INFO] [stdout] 44 | fn inspect(event: WebEvent) {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `List`
[INFO] [stdout]   --> src/custom.rs:59:6
[INFO] [stdout]    |
[INFO] [stdout] 59 | enum List {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/custom.rs:65:8
[INFO] [stdout]    |
[INFO] [stdout] 65 |     fn new() -> List {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `prepend`
[INFO] [stdout]   --> src/custom.rs:70:8
[INFO] [stdout]    |
[INFO] [stdout] 70 |     fn prepend(self, element: u32) -> List {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `len`
[INFO] [stdout]   --> src/custom.rs:74:8
[INFO] [stdout]    |
[INFO] [stdout] 74 |     fn len(&self) -> u32 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `stringify`
[INFO] [stdout]   --> src/custom.rs:82:8
[INFO] [stdout]    |
[INFO] [stdout] 82 |     fn stringify(&self) -> String {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `joe_test_custom_type`
[INFO] [stdout]   --> src/custom.rs:96:8
[INFO] [stdout]    |
[INFO] [stdout] 96 | pub fn joe_test_custom_type() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.84s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_by_example-8f66b44072806835)
[INFO] running `Command { std: "docker" "inspect" "e3186d2fe3a625c521fffeea2bf315efc68494ec39409ae04e04a5b9f5d82d7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3186d2fe3a625c521fffeea2bf315efc68494ec39409ae04e04a5b9f5d82d7a", kill_on_drop: false }`
[INFO] [stdout] e3186d2fe3a625c521fffeea2bf315efc68494ec39409ae04e04a5b9f5d82d7a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] fe4de887adc6877d3f2aaec52d3a2137f7b87e0365dea470447e77d75bd1d09c
[INFO] running `Command { std: "docker" "start" "-a" "fe4de887adc6877d3f2aaec52d3a2137f7b87e0365dea470447e77d75bd1d09c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused import: `std::fmt::Error`
[INFO] [stderr]  --> src/custom.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::fmt::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `left_edge`
[INFO] [stderr]    --> src/custom.rs:111:19
[INFO] [stderr]     |
[INFO] [stderr] 111 |     let Point {x: left_edge, y: top_edge} = point;
[INFO] [stderr]     |                   ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_left_edge`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `top_edge`
[INFO] [stderr]    --> src/custom.rs:111:33
[INFO] [stderr]     |
[INFO] [stderr] 111 |     let Point {x: left_edge, y: top_edge} = point;
[INFO] [stderr]     |                                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_top_edge`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]    --> src/custom.rs:124:9
[INFO] [stderr]     |
[INFO] [stderr] 124 |     let a = [1,2,6];
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `joe_format_print`
[INFO] [stderr]   --> src/hello.rs:33:8
[INFO] [stderr]    |
[INFO] [stderr] 33 | pub fn joe_format_print() {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `transpose`
[INFO] [stderr]   --> src/primitives.rs:14:4
[INFO] [stderr]    |
[INFO] [stderr] 14 | fn transpose(matrix: &mut Matrix) -> &Matrix {
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `joe_test_primitive`
[INFO] [stderr]   --> src/primitives.rs:21:8
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub fn joe_test_primitive() {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `x`
[INFO] [stderr]  --> src/custom.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     x: f32,
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `y`
[INFO] [stderr]  --> src/custom.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     y: f32,
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/custom.rs:17:12
[INFO] [stderr]    |
[INFO] [stderr] 17 |     pub fn new(x1: f32, y1: f32, x2: f32 ,y2 : f32) -> Result<Rectangle, &'static str> {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `rect_area`
[INFO] [stderr]   --> src/custom.rs:28:12
[INFO] [stderr]    |
[INFO] [stderr] 28 |     pub fn rect_area(&self) -> f32 {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `WebEvent`
[INFO] [stderr]   --> src/custom.rs:36:6
[INFO] [stderr]    |
[INFO] [stderr] 36 | enum WebEvent {
[INFO] [stderr]    |      ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `inspect`
[INFO] [stderr]   --> src/custom.rs:44:4
[INFO] [stderr]    |
[INFO] [stderr] 44 | fn inspect(event: WebEvent) {
[INFO] [stderr]    |    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `List`
[INFO] [stderr]   --> src/custom.rs:59:6
[INFO] [stderr]    |
[INFO] [stderr] 59 | enum List {
[INFO] [stderr]    |      ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/custom.rs:65:8
[INFO] [stderr]    |
[INFO] [stderr] 65 |     fn new() -> List {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `prepend`
[INFO] [stderr]   --> src/custom.rs:70:8
[INFO] [stderr]    |
[INFO] [stderr] 70 |     fn prepend(self, element: u32) -> List {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `len`
[INFO] [stderr]   --> src/custom.rs:74:8
[INFO] [stderr]    |
[INFO] [stderr] 74 |     fn len(&self) -> u32 {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `stringify`
[INFO] [stderr]   --> src/custom.rs:82:8
[INFO] [stderr]    |
[INFO] [stderr] 82 |     fn stringify(&self) -> String {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `joe_test_custom_type`
[INFO] [stderr]   --> src/custom.rs:96:8
[INFO] [stderr]    |
[INFO] [stderr] 96 | pub fn joe_test_custom_type() {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-by-example` (bin "rust-by-example" test) generated 19 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.43s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_by_example-8f66b44072806835)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "fe4de887adc6877d3f2aaec52d3a2137f7b87e0365dea470447e77d75bd1d09c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe4de887adc6877d3f2aaec52d3a2137f7b87e0365dea470447e77d75bd1d09c", kill_on_drop: false }`
[INFO] [stdout] fe4de887adc6877d3f2aaec52d3a2137f7b87e0365dea470447e77d75bd1d09c