[INFO] cloning repository https://github.com/amryamanah/workspace-tutor [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/amryamanah/workspace-tutor" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Famryamanah%2Fworkspace-tutor", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Famryamanah%2Fworkspace-tutor'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] a113af6a664c55d6cbdc479ef6cdf3eaedb1688f [INFO] checking amryamanah/workspace-tutor against master#7c4ac0603e9ee5295bc802c90575391288a69a8a for pr-124728 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Famryamanah%2Fworkspace-tutor" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/amryamanah/workspace-tutor on toolchain 7c4ac0603e9ee5295bc802c90575391288a69a8a [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7c4ac0603e9ee5295bc802c90575391288a69a8a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/amryamanah/workspace-tutor [INFO] finished tweaking git repo https://github.com/amryamanah/workspace-tutor [INFO] tweaked toml for git repo https://github.com/amryamanah/workspace-tutor written to /workspace/builds/worker-3-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/amryamanah/workspace-tutor 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" "+7c4ac0603e9ee5295bc802c90575391288a69a8a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+7c4ac0603e9ee5295bc802c90575391288a69a8a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] bee3b8aa95f0ec32ef8252b0672cb8cef2e5fcfbfac69af5a71f5ba5a201608a [INFO] running `Command { std: "docker" "start" "-a" "bee3b8aa95f0ec32ef8252b0672cb8cef2e5fcfbfac69af5a71f5ba5a201608a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "bee3b8aa95f0ec32ef8252b0672cb8cef2e5fcfbfac69af5a71f5ba5a201608a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "bee3b8aa95f0ec32ef8252b0672cb8cef2e5fcfbfac69af5a71f5ba5a201608a", kill_on_drop: false }` [INFO] [stdout] bee3b8aa95f0ec32ef8252b0672cb8cef2e5fcfbfac69af5a71f5ba5a201608a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+7c4ac0603e9ee5295bc802c90575391288a69a8a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] f3b77038be10e5b42cbfa9251d63bb802f851b092bc198365a59a150882159fc [INFO] running `Command { std: "docker" "start" "-a" "f3b77038be10e5b42cbfa9251d63bb802f851b092bc198365a59a150882159fc", kill_on_drop: false }` [INFO] [stderr] time="2024-05-15T06:17:43Z" level=error msg="error waiting for container: " [INFO] [stderr] Error response from daemon: failed to create task for container: failed to create shim task: OCI runtime create failed: runc create failed: unable to start container process: unable to apply cgroup configuration: unable to start unit "docker-f3b77038be10e5b42cbfa9251d63bb802f851b092bc198365a59a150882159fc.scope" (properties [{Name:Description Value:"libcontainer container f3b77038be10e5b42cbfa9251d63bb802f851b092bc198365a59a150882159fc"} {Name:Slice Value:"system.slice"} {Name:Delegate Value:true} {Name:PIDs Value:@au [2748424]} {Name:MemoryAccounting Value:true} {Name:CPUAccounting Value:true} {Name:IOAccounting Value:true} {Name:TasksAccounting Value:true} {Name:DefaultDependencies Value:false}]): Message recipient disconnected from message bus without replying: unknown [INFO] running `Command { std: "docker" "inspect" "f3b77038be10e5b42cbfa9251d63bb802f851b092bc198365a59a150882159fc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f3b77038be10e5b42cbfa9251d63bb802f851b092bc198365a59a150882159fc", kill_on_drop: false }` [INFO] [stdout] f3b77038be10e5b42cbfa9251d63bb802f851b092bc198365a59a150882159fc [INFO] checking amryamanah/workspace-tutor against try#98ebbae35138252af77610c20ea5a5e8bf68d639 for pr-124728 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Famryamanah%2Fworkspace-tutor" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/amryamanah/workspace-tutor on toolchain 98ebbae35138252af77610c20ea5a5e8bf68d639 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+98ebbae35138252af77610c20ea5a5e8bf68d639" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/amryamanah/workspace-tutor [INFO] finished tweaking git repo https://github.com/amryamanah/workspace-tutor [INFO] tweaked toml for git repo https://github.com/amryamanah/workspace-tutor written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/amryamanah/workspace-tutor 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" "+98ebbae35138252af77610c20ea5a5e8bf68d639" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+98ebbae35138252af77610c20ea5a5e8bf68d639" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 635f7adb3d3992ab10cb45a5adfa4f5b67132379b46c5bdd86a296bf1f212e15 [INFO] running `Command { std: "docker" "start" "-a" "635f7adb3d3992ab10cb45a5adfa4f5b67132379b46c5bdd86a296bf1f212e15", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "635f7adb3d3992ab10cb45a5adfa4f5b67132379b46c5bdd86a296bf1f212e15", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "635f7adb3d3992ab10cb45a5adfa4f5b67132379b46c5bdd86a296bf1f212e15", kill_on_drop: false }` [INFO] [stdout] 635f7adb3d3992ab10cb45a5adfa4f5b67132379b46c5bdd86a296bf1f212e15 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+98ebbae35138252af77610c20ea5a5e8bf68d639" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 58c6aa3e8d899f5d8b0d2221c0758448912eeecceabe765b9794f31d2b77164d [INFO] running `Command { std: "docker" "start" "-a" "58c6aa3e8d899f5d8b0d2221c0758448912eeecceabe765b9794f31d2b77164d", kill_on_drop: false }` [INFO] [stderr] Checking chap16_concurrency v0.1.0 (/opt/rustwide/workdir/chap16_concurrency) [INFO] [stderr] Checking blog v0.1.0 (/opt/rustwide/workdir/blog) [INFO] [stderr] Checking chap20_webserver v0.1.0 (/opt/rustwide/workdir/chap20_webserver) [INFO] [stderr] Checking chap17_oop v0.1.0 (/opt/rustwide/workdir/chap17_oop) [INFO] [stderr] Checking chap19_advanced v0.1.0 (/opt/rustwide/workdir/chap19_advanced) [INFO] [stderr] Checking chap15_smart_pointer v0.1.0 (/opt/rustwide/workdir/chap15_smart_pointer) [INFO] [stderr] Checking chap18_pattern v0.1.0 (/opt/rustwide/workdir/chap18_pattern) [INFO] [stdout] warning: `...` range patterns are deprecated [INFO] [stdout] --> chap18_pattern/src/lib.rs:23:45 [INFO] [stdout] | [INFO] [stdout] 23 | Message::Hello { id: id_variable @ 3...7 } => { [INFO] [stdout] | ^^^ help: use `..=` for an inclusive range [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `...` range patterns are deprecated [INFO] [stdout] --> chap18_pattern/src/lib.rs:26:32 [INFO] [stdout] | [INFO] [stdout] 26 | Message::Hello { id: 10...12 } => { [INFO] [stdout] | ^^^ help: use `..=` for an inclusive range [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `...` range patterns are deprecated [INFO] [stdout] --> chap18_pattern/src/lib.rs:23:45 [INFO] [stdout] | [INFO] [stdout] 23 | Message::Hello { id: id_variable @ 3...7 } => { [INFO] [stdout] | ^^^ help: use `..=` for an inclusive range [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `...` range patterns are deprecated [INFO] [stdout] --> chap18_pattern/src/lib.rs:26:32 [INFO] [stdout] | [INFO] [stdout] 26 | Message::Hello { id: 10...12 } => { [INFO] [stdout] | ^^^ help: use `..=` for an inclusive range [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `post` [INFO] [stdout] --> blog/src/postv1.rs:38:27 [INFO] [stdout] | [INFO] [stdout] 38 | fn content<'a>(&self, post: &'a Post) -> &'a str { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_post` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `post` [INFO] [stdout] --> blog/src/postv1.rs:38:27 [INFO] [stdout] | [INFO] [stdout] 38 | fn content<'a>(&self, post: &'a Post) -> &'a str { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_post` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `workers` is never read [INFO] [stdout] --> chap20_webserver/src/multithreaded.rs:10:5 [INFO] [stdout] | [INFO] [stdout] 9 | pub struct ThreadPool { [INFO] [stdout] | ---------- field in this struct [INFO] [stdout] 10 | workers: Vec, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `id` and `thread` are never read [INFO] [stdout] --> chap20_webserver/src/multithreaded.rs:62:5 [INFO] [stdout] | [INFO] [stdout] 61 | struct Worker { [INFO] [stdout] | ------ fields in this struct [INFO] [stdout] 62 | id: usize, [INFO] [stdout] | ^^ [INFO] [stdout] 63 | thread: thread::JoinHandle<()>, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> chap15_smart_pointer/src/lib.rs:154:9 [INFO] [stdout] | [INFO] [stdout] 154 | let b = RcCons(3, Rc::clone(&a)); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `c` [INFO] [stdout] --> chap15_smart_pointer/src/lib.rs:157:13 [INFO] [stdout] | [INFO] [stdout] 157 | let c = RcCons(4, Rc::clone(&a)); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `y` and `z` are never read [INFO] [stdout] --> chap18_pattern/src/lib.rs:90:9 [INFO] [stdout] | [INFO] [stdout] 88 | struct Point { [INFO] [stdout] | ----- fields in this struct [INFO] [stdout] 89 | x: i32, [INFO] [stdout] 90 | y: i32, [INFO] [stdout] | ^ [INFO] [stdout] 91 | z: i32, [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `Quit`, `Move`, and `Write` are never constructed [INFO] [stdout] --> chap18_pattern/src/lib.rs:115:5 [INFO] [stdout] | [INFO] [stdout] 114 | enum Message { [INFO] [stdout] | ------- variants in this enum [INFO] [stdout] 115 | Quit, [INFO] [stdout] | ^^^^ [INFO] [stdout] 116 | Move { x: i32, y: i32 }, [INFO] [stdout] | ^^^^ [INFO] [stdout] 117 | Write(String), [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `y` and `z` are never read [INFO] [stdout] --> chap18_pattern/src/lib.rs:90:9 [INFO] [stdout] | [INFO] [stdout] 88 | struct Point { [INFO] [stdout] | ----- fields in this struct [INFO] [stdout] 89 | x: i32, [INFO] [stdout] 90 | y: i32, [INFO] [stdout] | ^ [INFO] [stdout] 91 | z: i32, [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `Quit`, `Move`, and `Write` are never constructed [INFO] [stdout] --> chap18_pattern/src/lib.rs:115:5 [INFO] [stdout] | [INFO] [stdout] 114 | enum Message { [INFO] [stdout] | ------- variants in this enum [INFO] [stdout] 115 | Quit, [INFO] [stdout] | ^^^^ [INFO] [stdout] 116 | Move { x: i32, y: i32 }, [INFO] [stdout] | ^^^^ [INFO] [stdout] 117 | Write(String), [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0` and `1` are never read [INFO] [stdout] --> chap15_smart_pointer/src/lib.rs:33:10 [INFO] [stdout] | [INFO] [stdout] 33 | Cons(i32, Box), [INFO] [stdout] | ---- ^^^ ^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this variant [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields [INFO] [stdout] | [INFO] [stdout] 33 | Cons((), ()), [INFO] [stdout] | ~~ ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0` and `1` are never read [INFO] [stdout] --> chap15_smart_pointer/src/lib.rs:39:12 [INFO] [stdout] | [INFO] [stdout] 39 | RcCons(i32, Rc), [INFO] [stdout] | ------ ^^^ ^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this variant [INFO] [stdout] | [INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields [INFO] [stdout] | [INFO] [stdout] 39 | RcCons((), ()), [INFO] [stdout] | ~~ ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0` and `1` are never read [INFO] [stdout] --> chap15_smart_pointer/src/lib.rs:125:13 [INFO] [stdout] | [INFO] [stdout] 125 | RefCons(Rc>, Rc), [INFO] [stdout] | ------- ^^^^^^^^^^^^^^^^ ^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this variant [INFO] [stdout] | [INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields [INFO] [stdout] | [INFO] [stdout] 125 | RefCons((), ()), [INFO] [stdout] | ~~ ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `workers` is never read [INFO] [stdout] --> chap20_webserver/src/multithreaded.rs:10:5 [INFO] [stdout] | [INFO] [stdout] 9 | pub struct ThreadPool { [INFO] [stdout] | ---------- field in this struct [INFO] [stdout] 10 | workers: Vec, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `id` and `thread` are never read [INFO] [stdout] --> chap20_webserver/src/multithreaded.rs:62:5 [INFO] [stdout] | [INFO] [stdout] 61 | struct Worker { [INFO] [stdout] | ------ fields in this struct [INFO] [stdout] 62 | id: usize, [INFO] [stdout] | ^^ [INFO] [stdout] 63 | thread: thread::JoinHandle<()>, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking main_tutor v0.1.0 (/opt/rustwide/workdir/main_tutor) [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> chap15_smart_pointer/src/lib.rs:154:9 [INFO] [stdout] | [INFO] [stdout] 154 | let b = RcCons(3, Rc::clone(&a)); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `c` [INFO] [stdout] --> chap15_smart_pointer/src/lib.rs:157:13 [INFO] [stdout] | [INFO] [stdout] 157 | let c = RcCons(4, Rc::clone(&a)); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0` and `1` are never read [INFO] [stdout] --> chap15_smart_pointer/src/lib.rs:33:10 [INFO] [stdout] | [INFO] [stdout] 33 | Cons(i32, Box), [INFO] [stdout] | ---- ^^^ ^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this variant [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields [INFO] [stdout] | [INFO] [stdout] 33 | Cons((), ()), [INFO] [stdout] | ~~ ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0` and `1` are never read [INFO] [stdout] --> chap15_smart_pointer/src/lib.rs:39:12 [INFO] [stdout] | [INFO] [stdout] 39 | RcCons(i32, Rc), [INFO] [stdout] | ------ ^^^ ^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this variant [INFO] [stdout] | [INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields [INFO] [stdout] | [INFO] [stdout] 39 | RcCons((), ()), [INFO] [stdout] | ~~ ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0` and `1` are never read [INFO] [stdout] --> chap15_smart_pointer/src/lib.rs:125:13 [INFO] [stdout] | [INFO] [stdout] 125 | RefCons(Rc>, Rc), [INFO] [stdout] | ------- ^^^^^^^^^^^^^^^^ ^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this variant [INFO] [stdout] | [INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields [INFO] [stdout] | [INFO] [stdout] 125 | RefCons((), ()), [INFO] [stdout] | ~~ ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.11s [INFO] running `Command { std: "docker" "inspect" "58c6aa3e8d899f5d8b0d2221c0758448912eeecceabe765b9794f31d2b77164d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "58c6aa3e8d899f5d8b0d2221c0758448912eeecceabe765b9794f31d2b77164d", kill_on_drop: false }` [INFO] [stdout] 58c6aa3e8d899f5d8b0d2221c0758448912eeecceabe765b9794f31d2b77164d