[INFO] cloning repository https://github.com/przprz/rust-playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/przprz/rust-playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprzprz%2Frust-playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprzprz%2Frust-playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] da07dd27a84aeb4db9290bcb3d7a18d25b5ee897
[INFO] testing przprz/rust-playground against 1.95.0 for beta-1.96-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprzprz%2Frust-playground" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/przprz/rust-playground
[INFO] finished tweaking git repo https://github.com/przprz/rust-playground
[INFO] tweaked toml for git repo https://github.com/przprz/rust-playground written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/przprz/rust-playground on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/przprz/rust-playground 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" "+1.95.0" "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-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7527c1d0eae262971766f0a2808d7fd141da2e2dd0a1f208cf3ee33949e7ee90
[INFO] running `Command { std: "docker" "start" "-a" "7527c1d0eae262971766f0a2808d7fd141da2e2dd0a1f208cf3ee33949e7ee90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7527c1d0eae262971766f0a2808d7fd141da2e2dd0a1f208cf3ee33949e7ee90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7527c1d0eae262971766f0a2808d7fd141da2e2dd0a1f208cf3ee33949e7ee90", kill_on_drop: false }`
[INFO] [stdout] 7527c1d0eae262971766f0a2808d7fd141da2e2dd0a1f208cf3ee33949e7ee90
[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_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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 769153ecbf79d9520fe6878fd1e92592c1fd399da8dcf77ce1283589fe7f4bc4
[INFO] running `Command { std: "docker" "start" "-a" "769153ecbf79d9520fe6878fd1e92592c1fd399da8dcf77ce1283589fe7f4bc4", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `traits::Magnify`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use traits::Magnify;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `traits::Mountain`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use traits::Mountain;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Foo` is never constructed
[INFO] [stdout]  --> src/functions.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Foo;
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Bar` is never constructed
[INFO] [stdout]  --> src/functions.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Bar;
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `bar` is never used
[INFO] [stdout]  --> src/functions.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | impl Foo {
[INFO] [stdout]   | -------- method in this implementation
[INFO] [stdout] 7 |     fn bar(&self) {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `bar` is never used
[INFO] [stdout]   --> src/functions.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl Bar {
[INFO] [stdout]    | -------- method in this implementation
[INFO] [stdout] 13 |     fn bar(&self) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f` is never used
[INFO] [stdout]   --> src/functions.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn f() {
[INFO] [stdout]    |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Thhh` is never constructed
[INFO] [stdout]  --> src/threads.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Thhh;
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `t` is never used
[INFO] [stdout]  --> src/threads.rs:7:15
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub(crate) fn t() {
[INFO] [stdout]   |               ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `T` is never used
[INFO] [stdout]  --> src/q.rs:4:6
[INFO] [stdout]   |
[INFO] [stdout] 4 | enum T {
[INFO] [stdout]   |      ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `C` is never constructed
[INFO] [stdout]  --> src/q.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct C {
[INFO] [stdout]   |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `q` is never used
[INFO] [stdout]   --> src/q.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn q() {
[INFO] [stdout]    |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `use_c` is never used
[INFO] [stdout]   --> src/q.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn use_c(c: &C) -> String {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `P` is never constructed
[INFO] [stdout]  --> src/q/p.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct P;
[INFO] [stdout]   |            ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Magnify` is never used
[INFO] [stdout]  --> src/traits.rs:1:18
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub(crate) trait Magnify {
[INFO] [stdout]   |                  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Slide` is never used
[INFO] [stdout]   --> src/traits.rs:17:18
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub(crate) trait Slide<T, U> {
[INFO] [stdout]    |                  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Mountain` is never constructed
[INFO] [stdout]   --> src/traits.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub struct Mountain {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/traits.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 30 | impl Mountain {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 31 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.13s
[INFO] running `Command { std: "docker" "inspect" "769153ecbf79d9520fe6878fd1e92592c1fd399da8dcf77ce1283589fe7f4bc4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "769153ecbf79d9520fe6878fd1e92592c1fd399da8dcf77ce1283589fe7f4bc4", kill_on_drop: false }`
[INFO] [stdout] 769153ecbf79d9520fe6878fd1e92592c1fd399da8dcf77ce1283589fe7f4bc4
[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_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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 677da3d838b5ebe0e46da5a7ba35ea844c4fa459df8d598940dcbea39ebf6b50
[INFO] running `Command { std: "docker" "start" "-a" "677da3d838b5ebe0e46da5a7ba35ea844c4fa459df8d598940dcbea39ebf6b50", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `traits::Magnify`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use traits::Magnify;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `traits::Mountain`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use traits::Mountain;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Foo` is never constructed
[INFO] [stdout]  --> src/functions.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Foo;
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Bar` is never constructed
[INFO] [stdout]  --> src/functions.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Bar;
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `bar` is never used
[INFO] [stdout]  --> src/functions.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | impl Foo {
[INFO] [stdout]   | -------- method in this implementation
[INFO] [stdout] 7 |     fn bar(&self) {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `bar` is never used
[INFO] [stdout]   --> src/functions.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl Bar {
[INFO] [stdout]    | -------- method in this implementation
[INFO] [stdout] 13 |     fn bar(&self) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f` is never used
[INFO] [stdout]   --> src/functions.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn f() {
[INFO] [stdout]    |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Thhh` is never constructed
[INFO] [stdout]  --> src/threads.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Thhh;
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `t` is never used
[INFO] [stdout]  --> src/threads.rs:7:15
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub(crate) fn t() {
[INFO] [stdout]   |               ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `T` is never used
[INFO] [stdout]  --> src/q.rs:4:6
[INFO] [stdout]   |
[INFO] [stdout] 4 | enum T {
[INFO] [stdout]   |      ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `C` is never constructed
[INFO] [stdout]  --> src/q.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct C {
[INFO] [stdout]   |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `q` is never used
[INFO] [stdout]   --> src/q.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn q() {
[INFO] [stdout]    |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `use_c` is never used
[INFO] [stdout]   --> src/q.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn use_c(c: &C) -> String {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `P` is never constructed
[INFO] [stdout]  --> src/q/p.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct P;
[INFO] [stdout]   |            ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Magnify` is never used
[INFO] [stdout]  --> src/traits.rs:1:18
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub(crate) trait Magnify {
[INFO] [stdout]   |                  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Slide` is never used
[INFO] [stdout]   --> src/traits.rs:17:18
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub(crate) trait Slide<T, U> {
[INFO] [stdout]    |                  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Mountain` is never constructed
[INFO] [stdout]   --> src/traits.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub struct Mountain {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/traits.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 30 | impl Mountain {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 31 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "677da3d838b5ebe0e46da5a7ba35ea844c4fa459df8d598940dcbea39ebf6b50", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "677da3d838b5ebe0e46da5a7ba35ea844c4fa459df8d598940dcbea39ebf6b50", kill_on_drop: false }`
[INFO] [stdout] 677da3d838b5ebe0e46da5a7ba35ea844c4fa459df8d598940dcbea39ebf6b50
[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_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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7dfdbfe5c11b36528fbfc26b540bacdf0f3b8f2418905308db4f9847ffa9d9b1
[INFO] running `Command { std: "docker" "start" "-a" "7dfdbfe5c11b36528fbfc26b540bacdf0f3b8f2418905308db4f9847ffa9d9b1", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `traits::Magnify`
[INFO] [stderr]  --> src/main.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use traits::Magnify;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `traits::Mountain`
[INFO] [stderr]  --> src/main.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use traits::Mountain;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Foo` is never constructed
[INFO] [stderr]  --> src/functions.rs:2:8
[INFO] [stderr]   |
[INFO] [stderr] 2 | struct Foo;
[INFO] [stderr]   |        ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Bar` is never constructed
[INFO] [stderr]  --> src/functions.rs:4:8
[INFO] [stderr]   |
[INFO] [stderr] 4 | struct Bar;
[INFO] [stderr]   |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `bar` is never used
[INFO] [stderr]  --> src/functions.rs:7:8
[INFO] [stderr]   |
[INFO] [stderr] 6 | impl Foo {
[INFO] [stderr]   | -------- method in this implementation
[INFO] [stderr] 7 |     fn bar(&self) {
[INFO] [stderr]   |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `bar` is never used
[INFO] [stderr]   --> src/functions.rs:13:8
[INFO] [stderr]    |
[INFO] [stderr] 12 | impl Bar {
[INFO] [stderr]    | -------- method in this implementation
[INFO] [stderr] 13 |     fn bar(&self) {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `f` is never used
[INFO] [stderr]   --> src/functions.rs:18:8
[INFO] [stderr]    |
[INFO] [stderr] 18 | pub fn f() {
[INFO] [stderr]    |        ^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Thhh` is never constructed
[INFO] [stderr]  --> src/threads.rs:5:8
[INFO] [stderr]   |
[INFO] [stderr] 5 | struct Thhh;
[INFO] [stderr]   |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `t` is never used
[INFO] [stderr]  --> src/threads.rs:7:15
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub(crate) fn t() {
[INFO] [stderr]   |               ^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `T` is never used
[INFO] [stderr]  --> src/q.rs:4:6
[INFO] [stderr]   |
[INFO] [stderr] 4 | enum T {
[INFO] [stderr]   |      ^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `C` is never constructed
[INFO] [stderr]  --> src/q.rs:9:8
[INFO] [stderr]   |
[INFO] [stderr] 9 | struct C {
[INFO] [stderr]   |        ^
[INFO] [stderr] 
[INFO] [stderr] warning: function `q` is never used
[INFO] [stderr]   --> src/q.rs:14:8
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub fn q() {
[INFO] [stderr]    |        ^
[INFO] [stderr] 
[INFO] [stderr] warning: function `use_c` is never used
[INFO] [stderr]   --> src/q.rs:24:4
[INFO] [stderr]    |
[INFO] [stderr] 24 | fn use_c(c: &C) -> String {
[INFO] [stderr]    |    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `P` is never constructed
[INFO] [stderr]  --> src/q/p.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub struct P;
[INFO] [stderr]   |            ^
[INFO] [stderr] 
[INFO] [stderr] warning: trait `Magnify` is never used
[INFO] [stderr]  --> src/traits.rs:1:18
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub(crate) trait Magnify {
[INFO] [stderr]   |                  ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait `Slide` is never used
[INFO] [stderr]   --> src/traits.rs:17:18
[INFO] [stderr]    |
[INFO] [stderr] 17 | pub(crate) trait Slide<T, U> {
[INFO] [stderr]    |                  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Mountain` is never constructed
[INFO] [stderr]   --> src/traits.rs:27:12
[INFO] [stderr]    |
[INFO] [stderr] 27 | pub struct Mountain {
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]   --> src/traits.rs:31:12
[INFO] [stderr]    |
[INFO] [stderr] 30 | impl Mountain {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] 31 |     pub fn new() -> Self {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-playground` (bin "rust-playground" test) generated 18 warnings (run `cargo fix --bin "rust-playground" -p rust-playground --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_playground-860f2ee6daa57dd4)
[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" "7dfdbfe5c11b36528fbfc26b540bacdf0f3b8f2418905308db4f9847ffa9d9b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7dfdbfe5c11b36528fbfc26b540bacdf0f3b8f2418905308db4f9847ffa9d9b1", kill_on_drop: false }`
[INFO] [stdout] 7dfdbfe5c11b36528fbfc26b540bacdf0f3b8f2418905308db4f9847ffa9d9b1
