[INFO] cloning repository https://github.com/snavarros/rust-language [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/snavarros/rust-language" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsnavarros%2Frust-language", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsnavarros%2Frust-language'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 2088ceef3ba3162d17b010fc7aa75fe18a5d5eb9 [INFO] checking snavarros/rust-language against master#2fcf1776b9ccef89993dfe40e9f5c4908e2d2d48 for pr-142723 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsnavarros%2Frust-language" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/snavarros/rust-language on toolchain 2fcf1776b9ccef89993dfe40e9f5c4908e2d2d48 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2fcf1776b9ccef89993dfe40e9f5c4908e2d2d48" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/snavarros/rust-language [INFO] finished tweaking git repo https://github.com/snavarros/rust-language [INFO] tweaked toml for git repo https://github.com/snavarros/rust-language written to /workspace/builds/worker-6-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/snavarros/rust-language 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" "+2fcf1776b9ccef89993dfe40e9f5c4908e2d2d48" "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-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+2fcf1776b9ccef89993dfe40e9f5c4908e2d2d48" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 160ca9192a9869f04ceb9f2d2d44a2d6a36df662057e0f9dbd449f5aea243a6c [INFO] running `Command { std: "docker" "start" "-a" "160ca9192a9869f04ceb9f2d2d44a2d6a36df662057e0f9dbd449f5aea243a6c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "160ca9192a9869f04ceb9f2d2d44a2d6a36df662057e0f9dbd449f5aea243a6c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "160ca9192a9869f04ceb9f2d2d44a2d6a36df662057e0f9dbd449f5aea243a6c", kill_on_drop: false }` [INFO] [stdout] 160ca9192a9869f04ceb9f2d2d44a2d6a36df662057e0f9dbd449f5aea243a6c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+2fcf1776b9ccef89993dfe40e9f5c4908e2d2d48" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] b109634b348be05a675dd1c9841a9dc91e91607220d1488b86f683d4ba41ae09 [INFO] running `Command { std: "docker" "start" "-a" "b109634b348be05a675dd1c9841a9dc91e91607220d1488b86f683d4ba41ae09", kill_on_drop: false }` [INFO] [stderr] Checking rust-language v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: fields `value` and `next` are never read [INFO] [stdout] --> examples/04_03_ds_mylinkedlist.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 7 | struct LinkedListNode { [INFO] [stdout] | -------------- fields in this struct [INFO] [stdout] 8 | value : T, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 9 | next: Option>> [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `LinkedListNode` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `LinkedList` is never constructed [INFO] [stdout] --> examples/04_03_ds_mylinkedlist.rs:18:8 [INFO] [stdout] | [INFO] [stdout] 18 | struct LinkedList { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `new`, `prepend`, `append`, `insert`, and `find` are never used [INFO] [stdout] --> examples/04_03_ds_mylinkedlist.rs:24:8 [INFO] [stdout] | [INFO] [stdout] 23 | impl LinkedList { [INFO] [stdout] | -------------------------------- associated items in this implementation [INFO] [stdout] 24 | fn new() -> LinkedList { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 31 | fn prepend(&mut self, value: T) { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 45 | fn append(&mut self, value: T) { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 61 | fn insert(&mut self, value: T, index: usize) { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 83 | fn find(&self, value: T) -> Option<&LinkedListNode> { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.13s [INFO] running `Command { std: "docker" "inspect" "b109634b348be05a675dd1c9841a9dc91e91607220d1488b86f683d4ba41ae09", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b109634b348be05a675dd1c9841a9dc91e91607220d1488b86f683d4ba41ae09", kill_on_drop: false }` [INFO] [stdout] b109634b348be05a675dd1c9841a9dc91e91607220d1488b86f683d4ba41ae09