[INFO] cloning repository https://github.com/catdogpandas/rust-test-case
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/catdogpandas/rust-test-case" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcatdogpandas%2Frust-test-case", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcatdogpandas%2Frust-test-case'...
[INFO] [stderr] error: copy-fd: write returned: No space left on device
[INFO] [stderr] fatal: cannot copy '/usr/share/git-core/templates/hooks/post-update.sample' to '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcatdogpandas%2Frust-test-case/hooks/post-update.sample': No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 1)
[INFO] cloning repository https://github.com/catdogpandas/rust-test-case
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/catdogpandas/rust-test-case" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcatdogpandas%2Frust-test-case", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcatdogpandas%2Frust-test-case'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d9a90a67174a0574f8066e66a8ff55d8adaff809
[INFO] testing catdogpandas/rust-test-case against 1.86.0 for beta-1.87-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcatdogpandas%2Frust-test-case" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/catdogpandas/rust-test-case on toolchain 1.86.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.86.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-2-tc1/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/catdogpandas/rust-test-case
[INFO] finished tweaking git repo https://github.com/catdogpandas/rust-test-case
[INFO] tweaked toml for git repo https://github.com/catdogpandas/rust-test-case written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/catdogpandas/rust-test-case 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" "+1.86.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+1.86.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1ea9776940b428e69c100efe923dece5ae6c2f79d3f0822592190ddbd59dc63f
[INFO] running `Command { std: "docker" "start" "-a" "1ea9776940b428e69c100efe923dece5ae6c2f79d3f0822592190ddbd59dc63f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1ea9776940b428e69c100efe923dece5ae6c2f79d3f0822592190ddbd59dc63f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ea9776940b428e69c100efe923dece5ae6c2f79d3f0822592190ddbd59dc63f", kill_on_drop: false }`
[INFO] [stdout] 1ea9776940b428e69c100efe923dece5ae6c2f79d3f0822592190ddbd59dc63f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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_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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+1.86.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dc6b3b645e5667f2487903a84905ba58a16bbcbd1fedda7ce2a1f0a926a34f8c
[INFO] running `Command { std: "docker" "start" "-a" "dc6b3b645e5667f2487903a84905ba58a16bbcbd1fedda7ce2a1f0a926a34f8c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.151
[INFO] [stderr]    Compiling rust-test-case v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/examples.rs:14:13
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let mut v: Vec<Box<i32>> = Vec::new();
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tmp_heap_alloc`
[INFO] [stdout]   --> src/examples.rs:16:17
[INFO] [stdout]    |
[INFO] [stdout] 16 |         let mut tmp_heap_alloc = Box::new(1);
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tmp_heap_alloc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/examples.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let mut v: Vec<Box<i32>> = Vec::new();
[INFO] [stdout]    |         ----^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/examples.rs:16:13
[INFO] [stdout]    |
[INFO] [stdout] 16 |         let mut tmp_heap_alloc = Box::new(1);
[INFO] [stdout]    |             ----^^^^^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/examples.rs:99:9
[INFO] [stdout]    |
[INFO] [stdout] 99 |     let mut heap_obj: Box<dyn Summary> = Box::new(NewsArticle {
[INFO] [stdout]    |         ----^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/examples.rs:107:9
[INFO] [stdout]     |
[INFO] [stdout] 107 |     let mut heap_obj: &dyn Summary = &NewsArticle {
[INFO] [stdout]     |         ----^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `list_in_closure`
[INFO] [stdout]    --> src/examples.rs:174:13
[INFO] [stdout]     |
[INFO] [stdout] 174 |         let list_in_closure = list;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_list_in_closure`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `split_at_mut` is never used
[INFO] [stdout]   --> src/examples.rs:42:4
[INFO] [stdout]    |
[INFO] [stdout] 42 | fn split_at_mut(values: &mut [i32], mid: usize) -> (&mut [i32], &mut [i32]) {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Shoe` is never constructed
[INFO] [stdout]    --> src/examples.rs:155:8
[INFO] [stdout]     |
[INFO] [stdout] 155 | struct Shoe {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `shoes_in_size` is never used
[INFO] [stdout]    --> src/examples.rs:160:4
[INFO] [stdout]     |
[INFO] [stdout] 160 | fn shoes_in_size(shoes: Vec<Shoe>, shoe_size: u32) -> Vec<Shoe> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.82s
[INFO] running `Command { std: "docker" "inspect" "dc6b3b645e5667f2487903a84905ba58a16bbcbd1fedda7ce2a1f0a926a34f8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc6b3b645e5667f2487903a84905ba58a16bbcbd1fedda7ce2a1f0a926a34f8c", kill_on_drop: false }`
[INFO] [stdout] dc6b3b645e5667f2487903a84905ba58a16bbcbd1fedda7ce2a1f0a926a34f8c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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_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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+1.86.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 16404806f9d575320c0e81c75365e23718c985fe6cd03d5a60a9cba6ff2a978a
[INFO] running `Command { std: "docker" "start" "-a" "16404806f9d575320c0e81c75365e23718c985fe6cd03d5a60a9cba6ff2a978a", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-test-case v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/examples.rs:14:13
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let mut v: Vec<Box<i32>> = Vec::new();
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tmp_heap_alloc`
[INFO] [stdout]   --> src/examples.rs:16:17
[INFO] [stdout]    |
[INFO] [stdout] 16 |         let mut tmp_heap_alloc = Box::new(1);
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tmp_heap_alloc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/examples.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let mut v: Vec<Box<i32>> = Vec::new();
[INFO] [stdout]    |         ----^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/examples.rs:16:13
[INFO] [stdout]    |
[INFO] [stdout] 16 |         let mut tmp_heap_alloc = Box::new(1);
[INFO] [stdout]    |             ----^^^^^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/examples.rs:99:9
[INFO] [stdout]    |
[INFO] [stdout] 99 |     let mut heap_obj: Box<dyn Summary> = Box::new(NewsArticle {
[INFO] [stdout]    |         ----^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/examples.rs:107:9
[INFO] [stdout]     |
[INFO] [stdout] 107 |     let mut heap_obj: &dyn Summary = &NewsArticle {
[INFO] [stdout]     |         ----^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `list_in_closure`
[INFO] [stdout]    --> src/examples.rs:174:13
[INFO] [stdout]     |
[INFO] [stdout] 174 |         let list_in_closure = list;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_list_in_closure`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `split_at_mut` is never used
[INFO] [stdout]   --> src/examples.rs:42:4
[INFO] [stdout]    |
[INFO] [stdout] 42 | fn split_at_mut(values: &mut [i32], mid: usize) -> (&mut [i32], &mut [i32]) {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Shoe` is never constructed
[INFO] [stdout]    --> src/examples.rs:155:8
[INFO] [stdout]     |
[INFO] [stdout] 155 | struct Shoe {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `shoes_in_size` is never used
[INFO] [stdout]    --> src/examples.rs:160:4
[INFO] [stdout]     |
[INFO] [stdout] 160 | fn shoes_in_size(shoes: Vec<Shoe>, shoe_size: u32) -> Vec<Shoe> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.20s
[INFO] running `Command { std: "docker" "inspect" "16404806f9d575320c0e81c75365e23718c985fe6cd03d5a60a9cba6ff2a978a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16404806f9d575320c0e81c75365e23718c985fe6cd03d5a60a9cba6ff2a978a", kill_on_drop: false }`
[INFO] [stdout] 16404806f9d575320c0e81c75365e23718c985fe6cd03d5a60a9cba6ff2a978a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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_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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+1.86.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0acd21b28f0aa9dd8bef6003e662b50ed033c37fa2f0cde75ea2f66b42446136
[INFO] running `Command { std: "docker" "start" "-a" "0acd21b28f0aa9dd8bef6003e662b50ed033c37fa2f0cde75ea2f66b42446136", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `v`
[INFO] [stderr]   --> src/examples.rs:14:13
[INFO] [stderr]    |
[INFO] [stderr] 14 |     let mut v: Vec<Box<i32>> = Vec::new();
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tmp_heap_alloc`
[INFO] [stderr]   --> src/examples.rs:16:17
[INFO] [stderr]    |
[INFO] [stderr] 16 |         let mut tmp_heap_alloc = Box::new(1);
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tmp_heap_alloc`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/examples.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |     let mut v: Vec<Box<i32>> = Vec::new();
[INFO] [stderr]    |         ----^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/examples.rs:16:13
[INFO] [stderr]    |
[INFO] [stderr] 16 |         let mut tmp_heap_alloc = Box::new(1);
[INFO] [stderr]    |             ----^^^^^^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/examples.rs:99:9
[INFO] [stderr]    |
[INFO] [stderr] 99 |     let mut heap_obj: Box<dyn Summary> = Box::new(NewsArticle {
[INFO] [stderr]    |         ----^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/examples.rs:107:9
[INFO] [stderr]     |
[INFO] [stderr] 107 |     let mut heap_obj: &dyn Summary = &NewsArticle {
[INFO] [stderr]     |         ----^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `list_in_closure`
[INFO] [stderr]    --> src/examples.rs:174:13
[INFO] [stderr]     |
[INFO] [stderr] 174 |         let list_in_closure = list;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_list_in_closure`
[INFO] [stderr] 
[INFO] [stderr] warning: function `split_at_mut` is never used
[INFO] [stderr]   --> src/examples.rs:42:4
[INFO] [stderr]    |
[INFO] [stderr] 42 | fn split_at_mut(values: &mut [i32], mid: usize) -> (&mut [i32], &mut [i32]) {
[INFO] [stderr]    |    ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Shoe` is never constructed
[INFO] [stderr]    --> src/examples.rs:155:8
[INFO] [stderr]     |
[INFO] [stderr] 155 | struct Shoe {
[INFO] [stderr]     |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `shoes_in_size` is never used
[INFO] [stderr]    --> src/examples.rs:160:4
[INFO] [stderr]     |
[INFO] [stderr] 160 | fn shoes_in_size(shoes: Vec<Shoe>, shoe_size: u32) -> Vec<Shoe> {
[INFO] [stderr]     |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-test-case` (bin "rust-test-case" test) generated 10 warnings (run `cargo fix --bin "rust-test-case" --tests` to apply 4 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_test_case-6b8f29dcab1470f5)
[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" "0acd21b28f0aa9dd8bef6003e662b50ed033c37fa2f0cde75ea2f66b42446136", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0acd21b28f0aa9dd8bef6003e662b50ed033c37fa2f0cde75ea2f66b42446136", kill_on_drop: false }`
[INFO] [stdout] 0acd21b28f0aa9dd8bef6003e662b50ed033c37fa2f0cde75ea2f66b42446136