[INFO] cloning repository https://github.com/Pungyeon/rusty-lists [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Pungyeon/rusty-lists" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPungyeon%2Frusty-lists", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPungyeon%2Frusty-lists'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 7e84440d222e7b6bdb69f05555b9ff4c1f21a9d8 [INFO] checking Pungyeon/rusty-lists/7e84440d222e7b6bdb69f05555b9ff4c1f21a9d8 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPungyeon%2Frusty-lists" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Pungyeon/rusty-lists on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/Pungyeon/rusty-lists [INFO] finished tweaking git repo https://github.com/Pungyeon/rusty-lists [INFO] tweaked toml for git repo https://github.com/Pungyeon/rusty-lists written to /workspace/builds/worker-0-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/Pungyeon/rusty-lists 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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 071d7cbdd90227383cb31ca3fd2a6c9146bb43f308294f318b58411eac39bd8a [INFO] running `Command { std: "docker" "start" "-a" "071d7cbdd90227383cb31ca3fd2a6c9146bb43f308294f318b58411eac39bd8a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "071d7cbdd90227383cb31ca3fd2a6c9146bb43f308294f318b58411eac39bd8a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "071d7cbdd90227383cb31ca3fd2a6c9146bb43f308294f318b58411eac39bd8a", kill_on_drop: false }` [INFO] [stdout] 071d7cbdd90227383cb31ca3fd2a6c9146bb43f308294f318b58411eac39bd8a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 50628d5caa7b033d57cfdcd71626f510f05dd07ef19cc42a00288e8657cf0d82 [INFO] running `Command { std: "docker" "start" "-a" "50628d5caa7b033d57cfdcd71626f510f05dd07ef19cc42a00288e8657cf0d82", kill_on_drop: false }` [INFO] [stderr] Checking rusty-cart v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `super::Stack` [INFO] [stdout] --> src/lists/stack.rs:99:9 [INFO] [stdout] | [INFO] [stdout] 99 | use super::Stack; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `super::BinaryTree` [INFO] [stdout] --> src/lists/binary.rs:81:9 [INFO] [stdout] | [INFO] [stdout] 81 | use super::BinaryTree; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `elem` [INFO] [stdout] --> src/lists/persistently_linked.rs:33:24 [INFO] [stdout] | [INFO] [stdout] 33 | pub fn tail(&self, elem: T) -> List { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_elem` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `peek`, `iter`, and `iter_mut` are never used [INFO] [stdout] --> src/lists/stack.rs:27:12 [INFO] [stdout] | [INFO] [stdout] 5 | impl Stack { [INFO] [stdout] | ---------------- methods in this implementation [INFO] [stdout] ... [INFO] [stdout] 27 | pub fn peek(&self) -> Option<&T> { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 37 | pub fn iter(&self) -> Iter { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 41 | pub fn iter_mut(&mut self) -> IterMut<'_, T> { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `count` is never used [INFO] [stdout] --> src/lists/binary.rs:16:12 [INFO] [stdout] | [INFO] [stdout] 6 | impl BinaryTree { [INFO] [stdout] | --------------- method in this implementation [INFO] [stdout] ... [INFO] [stdout] 16 | pub fn count(self) -> usize { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `count` is never used [INFO] [stdout] --> src/lists/binary.rs:49:12 [INFO] [stdout] | [INFO] [stdout] 34 | impl BinaryNode { [INFO] [stdout] | --------------- method in this implementation [INFO] [stdout] ... [INFO] [stdout] 49 | pub fn count(self) -> usize { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `List` is never constructed [INFO] [stdout] --> src/lists/persistently_linked.rs:17:12 [INFO] [stdout] | [INFO] [stdout] 17 | pub struct List { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `new`, `append`, `tail`, `head`, and `iter` are never used [INFO] [stdout] --> src/lists/persistently_linked.rs:22:12 [INFO] [stdout] | [INFO] [stdout] 21 | impl List { [INFO] [stdout] | --------------- associated items in this implementation [INFO] [stdout] 22 | pub fn new() -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 26 | pub fn append(&self, elem: T) -> List { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 33 | pub fn tail(&self, elem: T) -> List { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 41 | pub fn head(&self) -> Option<&T> { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 45 | pub fn iter(&self) -> Iter<'_, T> { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `test_tail` is never used [INFO] [stdout] --> src/lists/persistently_linked.rs:73:8 [INFO] [stdout] | [INFO] [stdout] 73 | fn test_tail() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `elem` [INFO] [stdout] --> src/lists/persistently_linked.rs:33:24 [INFO] [stdout] | [INFO] [stdout] 33 | pub fn tail(&self, elem: T) -> List { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_elem` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 9 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `tail` and `head` are never used [INFO] [stdout] --> src/lists/persistently_linked.rs:33:12 [INFO] [stdout] | [INFO] [stdout] 21 | impl List { [INFO] [stdout] | --------------- methods in this implementation [INFO] [stdout] ... [INFO] [stdout] 33 | pub fn tail(&self, elem: T) -> List { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 41 | pub fn head(&self) -> Option<&T> { [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `test_tail` is never used [INFO] [stdout] --> src/lists/persistently_linked.rs:73:8 [INFO] [stdout] | [INFO] [stdout] 73 | fn test_tail() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.16s [INFO] running `Command { std: "docker" "inspect" "50628d5caa7b033d57cfdcd71626f510f05dd07ef19cc42a00288e8657cf0d82", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "50628d5caa7b033d57cfdcd71626f510f05dd07ef19cc42a00288e8657cf0d82", kill_on_drop: false }` [INFO] [stdout] 50628d5caa7b033d57cfdcd71626f510f05dd07ef19cc42a00288e8657cf0d82