[INFO] cloning repository https://github.com/luisya22/rust_concepts
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/luisya22/rust_concepts" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluisya22%2Frust_concepts", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluisya22%2Frust_concepts'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6ec671ab5c0f9a207f4bbc74582bd3067cbd2523
[INFO] testing luisya22/rust_concepts against master#d98a5da813da67eb189387b8ccfb73cf481275d8+rustflags=-Copt-level=3 for pr-138759-retry
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluisya22%2Frust_concepts" "/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/luisya22/rust_concepts
[INFO] finished tweaking git repo https://github.com/luisya22/rust_concepts
[INFO] tweaked toml for git repo https://github.com/luisya22/rust_concepts written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/luisya22/rust_concepts on toolchain d98a5da813da67eb189387b8ccfb73cf481275d8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/luisya22/rust_concepts 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" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cac17e7d5d100dca4ed634d511e53066d5b9c8a79b99c8988ec9e33818cd3ec4
[INFO] running `Command { std: "docker" "start" "-a" "cac17e7d5d100dca4ed634d511e53066d5b9c8a79b99c8988ec9e33818cd3ec4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cac17e7d5d100dca4ed634d511e53066d5b9c8a79b99c8988ec9e33818cd3ec4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cac17e7d5d100dca4ed634d511e53066d5b9c8a79b99c8988ec9e33818cd3ec4", kill_on_drop: false }`
[INFO] [stdout] cac17e7d5d100dca4ed634d511e53066d5b9c8a79b99c8988ec9e33818cd3ec4
[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=forbid -Copt-level=3" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 934e85dba47ee1f033722aad8a00a36317be25942e1dbe81f4a5c397a788dc14
[INFO] running `Command { std: "docker" "start" "-a" "934e85dba47ee1f033722aad8a00a36317be25942e1dbe81f4a5c397a788dc14", kill_on_drop: false }`
[INFO] [stderr]    Compiling restaurant v0.1.0 (/opt/rustwide/workdir/restaurant)
[INFO] [stdout] warning: unused variable: `order1`
[INFO] [stdout]   --> restaurant/src/lib.rs:66:9
[INFO] [stdout]    |
[INFO] [stdout] 66 |     let order1 = back_of_house::Appetizer::Soup;
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_order1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `order2`
[INFO] [stdout]   --> restaurant/src/lib.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 67 |     let order2 = back_of_house::Appetizer::Salad;
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_order2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `seat_at_table` is never used
[INFO] [stdout]  --> restaurant/src/lib.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 |         fn seat_at_table(){
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `server_order` is never used
[INFO] [stdout]   --> restaurant/src/lib.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 |         fn server_order(){
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `take_payments` is never used
[INFO] [stdout]   --> restaurant/src/lib.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 |         fn take_payments(){
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `seasonal_fruit` is never read
[INFO] [stdout]   --> restaurant/src/lib.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub struct Breakfast {
[INFO] [stdout]    |                --------- field in this struct
[INFO] [stdout] 30 |         pub toast: String,
[INFO] [stdout] 31 |         seasonal_fruit: String,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rust_concepts v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/patterns_and_matching.rs:69:9
[INFO] [stdout]    |
[INFO] [stdout] 69 |     let x = 5;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/patterns_and_matching.rs:75:10
[INFO] [stdout]    |
[INFO] [stdout] 75 |     let (x, y, z) = (1, 2, 3);
[INFO] [stdout]    |          ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/patterns_and_matching.rs:75:13
[INFO] [stdout]    |
[INFO] [stdout] 75 |     let (x, y, z) = (1, 2, 3);
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]   --> src/patterns_and_matching.rs:75:16
[INFO] [stdout]    |
[INFO] [stdout] 75 |     let (x, y, z) = (1, 2, 3);
[INFO] [stdout]    |                ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Quit`, `Move`, and `Write` are never constructed
[INFO] [stdout]    --> src/patterns_and_matching.rs:176:5
[INFO] [stdout]     |
[INFO] [stdout] 175 | enum Message {
[INFO] [stdout]     |      ------- variants in this enum
[INFO] [stdout] 176 |     Quit,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 177 |     Move { x: i32, y: i32 },
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 178 |     Write(String),
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.66s
[INFO] running `Command { std: "docker" "inspect" "934e85dba47ee1f033722aad8a00a36317be25942e1dbe81f4a5c397a788dc14", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "934e85dba47ee1f033722aad8a00a36317be25942e1dbe81f4a5c397a788dc14", kill_on_drop: false }`
[INFO] [stdout] 934e85dba47ee1f033722aad8a00a36317be25942e1dbe81f4a5c397a788dc14
[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=forbid -Copt-level=3" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2e3da2be7a983a3cf294966decb176bfc1b40e9c3e27c1618e191c3c8dd67a11
[INFO] running `Command { std: "docker" "start" "-a" "2e3da2be7a983a3cf294966decb176bfc1b40e9c3e27c1618e191c3c8dd67a11", kill_on_drop: false }`
[INFO] [stdout] warning: unused variable: `order1`
[INFO] [stdout]   --> restaurant/src/lib.rs:66:9
[INFO] [stdout]    |
[INFO] [stdout] 66 |     let order1 = back_of_house::Appetizer::Soup;
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_order1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `order2`
[INFO] [stdout]   --> restaurant/src/lib.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 67 |     let order2 = back_of_house::Appetizer::Salad;
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_order2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `seat_at_table` is never used
[INFO] [stdout]  --> restaurant/src/lib.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 |         fn seat_at_table(){
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `server_order` is never used
[INFO] [stdout]   --> restaurant/src/lib.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 |         fn server_order(){
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `take_payments` is never used
[INFO] [stdout]   --> restaurant/src/lib.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 |         fn take_payments(){
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `seasonal_fruit` is never read
[INFO] [stdout]   --> restaurant/src/lib.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub struct Breakfast {
[INFO] [stdout]    |                --------- field in this struct
[INFO] [stdout] 30 |         pub toast: String,
[INFO] [stdout] 31 |         seasonal_fruit: String,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rust_concepts v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/patterns_and_matching.rs:69:9
[INFO] [stdout]    |
[INFO] [stdout] 69 |     let x = 5;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/patterns_and_matching.rs:75:10
[INFO] [stdout]    |
[INFO] [stdout] 75 |     let (x, y, z) = (1, 2, 3);
[INFO] [stdout]    |          ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/patterns_and_matching.rs:75:13
[INFO] [stdout]    |
[INFO] [stdout] 75 |     let (x, y, z) = (1, 2, 3);
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]   --> src/patterns_and_matching.rs:75:16
[INFO] [stdout]    |
[INFO] [stdout] 75 |     let (x, y, z) = (1, 2, 3);
[INFO] [stdout]    |                ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Quit`, `Move`, and `Write` are never constructed
[INFO] [stdout]    --> src/patterns_and_matching.rs:176:5
[INFO] [stdout]     |
[INFO] [stdout] 175 | enum Message {
[INFO] [stdout]     |      ------- variants in this enum
[INFO] [stdout] 176 |     Quit,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 177 |     Move { x: i32, y: i32 },
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 178 |     Write(String),
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.29s
[INFO] running `Command { std: "docker" "inspect" "2e3da2be7a983a3cf294966decb176bfc1b40e9c3e27c1618e191c3c8dd67a11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e3da2be7a983a3cf294966decb176bfc1b40e9c3e27c1618e191c3c8dd67a11", kill_on_drop: false }`
[INFO] [stdout] 2e3da2be7a983a3cf294966decb176bfc1b40e9c3e27c1618e191c3c8dd67a11
[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=forbid -Copt-level=3" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ea57493b6b595962cf0c5676bda476933732fe98c9f16b537c5dd31a9c1a9781
[INFO] running `Command { std: "docker" "start" "-a" "ea57493b6b595962cf0c5676bda476933732fe98c9f16b537c5dd31a9c1a9781", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `order1`
[INFO] [stderr]   --> restaurant/src/lib.rs:66:9
[INFO] [stderr]    |
[INFO] [stderr] 66 |     let order1 = back_of_house::Appetizer::Soup;
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_order1`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `order2`
[INFO] [stderr]   --> restaurant/src/lib.rs:67:9
[INFO] [stderr]    |
[INFO] [stderr] 67 |     let order2 = back_of_house::Appetizer::Salad;
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_order2`
[INFO] [stderr] 
[INFO] [stderr] warning: function `seat_at_table` is never used
[INFO] [stderr]  --> restaurant/src/lib.rs:8:12
[INFO] [stderr]   |
[INFO] [stderr] 8 |         fn seat_at_table(){
[INFO] [stderr]   |            ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `server_order` is never used
[INFO] [stderr]   --> restaurant/src/lib.rs:18:12
[INFO] [stderr]    |
[INFO] [stderr] 18 |         fn server_order(){
[INFO] [stderr]    |            ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `take_payments` is never used
[INFO] [stderr]   --> restaurant/src/lib.rs:22:12
[INFO] [stderr]    |
[INFO] [stderr] 22 |         fn take_payments(){
[INFO] [stderr]    |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `seasonal_fruit` is never read
[INFO] [stderr]   --> restaurant/src/lib.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 29 |     pub struct Breakfast {
[INFO] [stderr]    |                --------- field in this struct
[INFO] [stderr] 30 |         pub toast: String,
[INFO] [stderr] 31 |         seasonal_fruit: String,
[INFO] [stderr]    |         ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `restaurant` (lib) generated 6 warnings
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/patterns_and_matching.rs:69:9
[INFO] [stderr]    |
[INFO] [stderr] 69 |     let x = 5;
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/patterns_and_matching.rs:75:10
[INFO] [stderr]    |
[INFO] [stderr] 75 |     let (x, y, z) = (1, 2, 3);
[INFO] [stderr]    |          ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]   --> src/patterns_and_matching.rs:75:13
[INFO] [stderr]    |
[INFO] [stderr] 75 |     let (x, y, z) = (1, 2, 3);
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `z`
[INFO] [stderr]   --> src/patterns_and_matching.rs:75:16
[INFO] [stderr]    |
[INFO] [stderr] 75 |     let (x, y, z) = (1, 2, 3);
[INFO] [stderr]    |                ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stderr] 
[INFO] [stderr] warning: variants `Quit`, `Move`, and `Write` are never constructed
[INFO] [stderr]    --> src/patterns_and_matching.rs:176:5
[INFO] [stderr]     |
[INFO] [stderr] 175 | enum Message {
[INFO] [stderr]     |      ------- variants in this enum
[INFO] [stderr] 176 |     Quit,
[INFO] [stderr]     |     ^^^^
[INFO] [stderr] 177 |     Move { x: i32, y: i32 },
[INFO] [stderr]     |     ^^^^
[INFO] [stderr] 178 |     Write(String),
[INFO] [stderr]     |     ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rust_concepts` (bin "rust_concepts" test) generated 5 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_concepts-5e74170f59523c1a)
[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" "ea57493b6b595962cf0c5676bda476933732fe98c9f16b537c5dd31a9c1a9781", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea57493b6b595962cf0c5676bda476933732fe98c9f16b537c5dd31a9c1a9781", kill_on_drop: false }`
[INFO] [stdout] ea57493b6b595962cf0c5676bda476933732fe98c9f16b537c5dd31a9c1a9781