[INFO] cloning repository https://github.com/fahrenkrug/rust_learn_book_chapter_18 [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fahrenkrug/rust_learn_book_chapter_18" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffahrenkrug%2Frust_learn_book_chapter_18", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffahrenkrug%2Frust_learn_book_chapter_18'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 720cc6cfcf96683297fb2733f4b958d516e581bb [INFO] checking fahrenkrug/rust_learn_book_chapter_18 against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffahrenkrug%2Frust_learn_book_chapter_18" "/workspace/builds/worker-11/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/fahrenkrug/rust_learn_book_chapter_18 on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/fahrenkrug/rust_learn_book_chapter_18 [INFO] finished tweaking git repo https://github.com/fahrenkrug/rust_learn_book_chapter_18 [INFO] tweaked toml for git repo https://github.com/fahrenkrug/rust_learn_book_chapter_18 written to /workspace/builds/worker-11/source/Cargo.toml [INFO] crate git repo https://github.com/fahrenkrug/rust_learn_book_chapter_18 already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 82a48970150f6da1f8015870a9736ab15833d68e0cd7865a85112e07160b36eb [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "82a48970150f6da1f8015870a9736ab15833d68e0cd7865a85112e07160b36eb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "82a48970150f6da1f8015870a9736ab15833d68e0cd7865a85112e07160b36eb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "82a48970150f6da1f8015870a9736ab15833d68e0cd7865a85112e07160b36eb", kill_on_drop: false }` [INFO] [stdout] 82a48970150f6da1f8015870a9736ab15833d68e0cd7865a85112e07160b36eb [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] f0541b2a1e1c6c8474dba6a577b6cecbe0c1f2287135ec607a6c8c04c99c797a [INFO] running `Command { std: "docker" "start" "-a" "f0541b2a1e1c6c8474dba6a577b6cecbe0c1f2287135ec607a6c8c04c99c797a", kill_on_drop: false }` [INFO] [stderr] Checking pattern_and_matching v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: irrefutable `if let` pattern [INFO] [stdout] --> src/refutability.rs:16:8 [INFO] [stdout] | [INFO] [stdout] 16 | if let x = 5 { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(irrefutable_let_patterns)]` on by default [INFO] [stdout] = note: this pattern will always match, so the `if let` is useless [INFO] [stdout] = help: consider replacing the `if let` with a `let` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `first` [INFO] [stdout] --> src/pattern_syntax.rs:156:10 [INFO] [stdout] | [INFO] [stdout] 156 | (first, _, third, _, fifth) => { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_first` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Quit` [INFO] [stdout] --> src/pattern_syntax.rs:91:5 [INFO] [stdout] | [INFO] [stdout] 91 | Quit, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Move` [INFO] [stdout] --> src/pattern_syntax.rs:92:5 [INFO] [stdout] | [INFO] [stdout] 92 | Move {x: i32, y: i32}, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Write` [INFO] [stdout] --> src/pattern_syntax.rs:93:5 [INFO] [stdout] | [INFO] [stdout] 93 | Write(String), [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Rgb` [INFO] [stdout] --> src/pattern_syntax.rs:113:5 [INFO] [stdout] | [INFO] [stdout] 113 | Rgb(i32, i32, i32), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Quit` [INFO] [stdout] --> src/pattern_syntax.rs:118:5 [INFO] [stdout] | [INFO] [stdout] 118 | Quit, [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Move` [INFO] [stdout] --> src/pattern_syntax.rs:119:5 [INFO] [stdout] | [INFO] [stdout] 119 | Move {x: i32, y: i32}, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Write` [INFO] [stdout] --> src/pattern_syntax.rs:120:5 [INFO] [stdout] | [INFO] [stdout] 120 | Write(String), [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `y` [INFO] [stdout] --> src/pattern_syntax.rs:187:5 [INFO] [stdout] | [INFO] [stdout] 187 | y: i32, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `z` [INFO] [stdout] --> src/pattern_syntax.rs:188:5 [INFO] [stdout] | [INFO] [stdout] 188 | z: i32, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 11 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: irrefutable `if let` pattern [INFO] [stdout] --> src/refutability.rs:16:8 [INFO] [stdout] | [INFO] [stdout] 16 | if let x = 5 { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(irrefutable_let_patterns)]` on by default [INFO] [stdout] = note: this pattern will always match, so the `if let` is useless [INFO] [stdout] = help: consider replacing the `if let` with a `let` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `first` [INFO] [stdout] --> src/pattern_syntax.rs:156:10 [INFO] [stdout] | [INFO] [stdout] 156 | (first, _, third, _, fifth) => { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_first` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Quit` [INFO] [stdout] --> src/pattern_syntax.rs:91:5 [INFO] [stdout] | [INFO] [stdout] 91 | Quit, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Move` [INFO] [stdout] --> src/pattern_syntax.rs:92:5 [INFO] [stdout] | [INFO] [stdout] 92 | Move {x: i32, y: i32}, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Write` [INFO] [stdout] --> src/pattern_syntax.rs:93:5 [INFO] [stdout] | [INFO] [stdout] 93 | Write(String), [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Rgb` [INFO] [stdout] --> src/pattern_syntax.rs:113:5 [INFO] [stdout] | [INFO] [stdout] 113 | Rgb(i32, i32, i32), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Quit` [INFO] [stdout] --> src/pattern_syntax.rs:118:5 [INFO] [stdout] | [INFO] [stdout] 118 | Quit, [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Move` [INFO] [stdout] --> src/pattern_syntax.rs:119:5 [INFO] [stdout] | [INFO] [stdout] 119 | Move {x: i32, y: i32}, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Write` [INFO] [stdout] --> src/pattern_syntax.rs:120:5 [INFO] [stdout] | [INFO] [stdout] 120 | Write(String), [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `y` [INFO] [stdout] --> src/pattern_syntax.rs:187:5 [INFO] [stdout] | [INFO] [stdout] 187 | y: i32, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `z` [INFO] [stdout] --> src/pattern_syntax.rs:188:5 [INFO] [stdout] | [INFO] [stdout] 188 | z: i32, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 11 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.65s [INFO] running `Command { std: "docker" "inspect" "f0541b2a1e1c6c8474dba6a577b6cecbe0c1f2287135ec607a6c8c04c99c797a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f0541b2a1e1c6c8474dba6a577b6cecbe0c1f2287135ec607a6c8c04c99c797a", kill_on_drop: false }` [INFO] [stdout] f0541b2a1e1c6c8474dba6a577b6cecbe0c1f2287135ec607a6c8c04c99c797a