[INFO] cloning repository https://github.com/xeron56/rust_programming [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xeron56/rust_programming" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxeron56%2Frust_programming", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxeron56%2Frust_programming'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 713c00e80573778f94cd280f73d18331d9515073 [INFO] checking xeron56/rust_programming against master#5557f8c9d08d7f3f680943dcf97b6d4a7eb13aea for pr-124336 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxeron56%2Frust_programming" "/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/xeron56/rust_programming on toolchain 5557f8c9d08d7f3f680943dcf97b6d4a7eb13aea [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5557f8c9d08d7f3f680943dcf97b6d4a7eb13aea" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/xeron56/rust_programming [INFO] finished tweaking git repo https://github.com/xeron56/rust_programming [INFO] tweaked toml for git repo https://github.com/xeron56/rust_programming written to /workspace/builds/worker-3-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/xeron56/rust_programming 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" "+5557f8c9d08d7f3f680943dcf97b6d4a7eb13aea" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [ERROR] error running command: no output for 300 seconds [ERROR] this task or one of its parent failed! [ERROR] no output for 300 seconds [ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace. [INFO] checking xeron56/rust_programming against try#311f8b6ca41358db8ae08490a9ca0916f11e9de3 for pr-124336 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxeron56%2Frust_programming" "/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/xeron56/rust_programming on toolchain 311f8b6ca41358db8ae08490a9ca0916f11e9de3 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+311f8b6ca41358db8ae08490a9ca0916f11e9de3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/xeron56/rust_programming [INFO] finished tweaking git repo https://github.com/xeron56/rust_programming [INFO] tweaked toml for git repo https://github.com/xeron56/rust_programming written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/xeron56/rust_programming 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" "+311f8b6ca41358db8ae08490a9ca0916f11e9de3" "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 [ERROR] error running command: no output for 300 seconds [INFO] checking xeron56/rust_programming against try#311f8b6ca41358db8ae08490a9ca0916f11e9de3 for pr-124336 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxeron56%2Frust_programming" "/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/xeron56/rust_programming on toolchain 311f8b6ca41358db8ae08490a9ca0916f11e9de3 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+311f8b6ca41358db8ae08490a9ca0916f11e9de3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/xeron56/rust_programming [INFO] finished tweaking git repo https://github.com/xeron56/rust_programming [INFO] tweaked toml for git repo https://github.com/xeron56/rust_programming written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/xeron56/rust_programming 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" "+311f8b6ca41358db8ae08490a9ca0916f11e9de3" "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-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" "+311f8b6ca41358db8ae08490a9ca0916f11e9de3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 46f797b0ff2a4fb754089c0ef4a84e4d4ceda201bd2e9cc5205cb002c35702ba [INFO] running `Command { std: "docker" "start" "-a" "46f797b0ff2a4fb754089c0ef4a84e4d4ceda201bd2e9cc5205cb002c35702ba", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "46f797b0ff2a4fb754089c0ef4a84e4d4ceda201bd2e9cc5205cb002c35702ba", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "46f797b0ff2a4fb754089c0ef4a84e4d4ceda201bd2e9cc5205cb002c35702ba", kill_on_drop: false }` [INFO] [stdout] 46f797b0ff2a4fb754089c0ef4a84e4d4ceda201bd2e9cc5205cb002c35702ba [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" "+311f8b6ca41358db8ae08490a9ca0916f11e9de3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 2f6ccb1bdcfda4b606068951f8deb4986a8063fe10b2a2fe82613a8ea74421ef [INFO] running `Command { std: "docker" "start" "-a" "2f6ccb1bdcfda4b606068951f8deb4986a8063fe10b2a2fe82613a8ea74421ef", kill_on_drop: false }` [INFO] [stderr] Checking rust_programming v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/chapter1.rs:26:9 [INFO] [stdout] | [INFO] [stdout] 26 | let a: i32 = 42; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/chapter1.rs:27:9 [INFO] [stdout] | [INFO] [stdout] 27 | let b: u8 = 255; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/chapter1.rs:30:9 [INFO] [stdout] | [INFO] [stdout] 30 | let x: f64 = 3.14; [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/chapter1.rs:31:9 [INFO] [stdout] | [INFO] [stdout] 31 | let y: f32 = 2.71828; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `is_true` [INFO] [stdout] --> src/chapter1.rs:34:9 [INFO] [stdout] | [INFO] [stdout] 34 | let is_true: bool = true; [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_true` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `is_false` [INFO] [stdout] --> src/chapter1.rs:35:9 [INFO] [stdout] | [INFO] [stdout] 35 | let is_false: bool = false; [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_false` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `c` [INFO] [stdout] --> src/chapter1.rs:38:9 [INFO] [stdout] | [INFO] [stdout] 38 | let c: char = 'A'; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `emoji` [INFO] [stdout] --> src/chapter1.rs:39:9 [INFO] [stdout] | [INFO] [stdout] 39 | let emoji: char = '😀'; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_emoji` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/chapter1.rs:26:9 [INFO] [stdout] | [INFO] [stdout] 26 | let a: i32 = 42; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/chapter1.rs:27:9 [INFO] [stdout] | [INFO] [stdout] 27 | let b: u8 = 255; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/chapter1.rs:30:9 [INFO] [stdout] | [INFO] [stdout] 30 | let x: f64 = 3.14; [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/chapter1.rs:31:9 [INFO] [stdout] | [INFO] [stdout] 31 | let y: f32 = 2.71828; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `is_true` [INFO] [stdout] --> src/chapter1.rs:34:9 [INFO] [stdout] | [INFO] [stdout] 34 | let is_true: bool = true; [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_true` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `is_false` [INFO] [stdout] --> src/chapter1.rs:35:9 [INFO] [stdout] | [INFO] [stdout] 35 | let is_false: bool = false; [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_false` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `c` [INFO] [stdout] --> src/chapter1.rs:38:9 [INFO] [stdout] | [INFO] [stdout] 38 | let c: char = 'A'; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `emoji` [INFO] [stdout] --> src/chapter1.rs:39:9 [INFO] [stdout] | [INFO] [stdout] 39 | let emoji: char = '😀'; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_emoji` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s2` [INFO] [stdout] --> src/chapter2.rs:7:9 [INFO] [stdout] | [INFO] [stdout] 7 | let s2 = s1; // s1 is no longer valid [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s2` [INFO] [stdout] --> src/chapter2.rs:7:9 [INFO] [stdout] | [INFO] [stdout] 7 | let s2 = s1; // s1 is no longer valid [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> src/chapter3.rs:82:9 [INFO] [stdout] | [INFO] [stdout] 82 | let y: Option = None; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s2` [INFO] [stdout] --> src/chapter5.rs:7:9 [INFO] [stdout] | [INFO] [stdout] 7 | let s2 = s1; // s1 is no longer valid [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> src/chapter3.rs:82:9 [INFO] [stdout] | [INFO] [stdout] 82 | let y: Option = None; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/chapter5.rs:75:9 [INFO] [stdout] | [INFO] [stdout] 75 | let mut v = vec![1, 2, 3]; [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: unused variable: `s2` [INFO] [stdout] --> src/chapter5.rs:7:9 [INFO] [stdout] | [INFO] [stdout] 7 | let s2 = s1; // s1 is no longer valid [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/chapter5.rs:75:9 [INFO] [stdout] | [INFO] [stdout] 75 | let mut v = vec![1, 2, 3]; [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: field `content` is never read [INFO] [stdout] --> src/chapter6.rs:12:5 [INFO] [stdout] | [INFO] [stdout] 8 | struct NewsArticle { [INFO] [stdout] | ----------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 12 | content: String, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `reply` and `retweet` are never read [INFO] [stdout] --> src/chapter6.rs:24:5 [INFO] [stdout] | [INFO] [stdout] 21 | struct Tweet { [INFO] [stdout] | ----- fields in this struct [INFO] [stdout] ... [INFO] [stdout] 24 | reply: bool, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 25 | retweet: bool, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `start` is never read [INFO] [stdout] --> src/chapter6.rs:55:5 [INFO] [stdout] | [INFO] [stdout] 54 | struct Range { [INFO] [stdout] | ----- field in this struct [INFO] [stdout] 55 | start: i32, [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `content` is never read [INFO] [stdout] --> src/chapter6.rs:12:5 [INFO] [stdout] | [INFO] [stdout] 8 | struct NewsArticle { [INFO] [stdout] | ----------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 12 | content: String, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `reply` and `retweet` are never read [INFO] [stdout] --> src/chapter6.rs:24:5 [INFO] [stdout] | [INFO] [stdout] 21 | struct Tweet { [INFO] [stdout] | ----- fields in this struct [INFO] [stdout] ... [INFO] [stdout] 24 | reply: bool, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 25 | retweet: bool, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `start` is never read [INFO] [stdout] --> src/chapter6.rs:55:5 [INFO] [stdout] | [INFO] [stdout] 54 | struct Range { [INFO] [stdout] | ----- field in this struct [INFO] [stdout] 55 | start: i32, [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 15 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 15 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.10s [INFO] running `Command { std: "docker" "inspect" "2f6ccb1bdcfda4b606068951f8deb4986a8063fe10b2a2fe82613a8ea74421ef", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2f6ccb1bdcfda4b606068951f8deb4986a8063fe10b2a2fe82613a8ea74421ef", kill_on_drop: false }` [INFO] [stdout] 2f6ccb1bdcfda4b606068951f8deb4986a8063fe10b2a2fe82613a8ea74421ef