[INFO] cloning repository https://github.com/PunkGoesPop/linked_list [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/PunkGoesPop/linked_list" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPunkGoesPop%2Flinked_list", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPunkGoesPop%2Flinked_list'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] c135e44dcdfca8a634c657184740ef988386aee4 [INFO] testing PunkGoesPop/linked_list against try#16fbf98f22730e073c09e7b03f0eafb87a295545 for pr-145628-retry-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPunkGoesPop%2Flinked_list" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/PunkGoesPop/linked_list [INFO] finished tweaking git repo https://github.com/PunkGoesPop/linked_list [INFO] tweaked toml for git repo https://github.com/PunkGoesPop/linked_list written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/PunkGoesPop/linked_list on toolchain 16fbf98f22730e073c09e7b03f0eafb87a295545 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+16fbf98f22730e073c09e7b03f0eafb87a295545" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/PunkGoesPop/linked_list 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" "+16fbf98f22730e073c09e7b03f0eafb87a295545" "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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+16fbf98f22730e073c09e7b03f0eafb87a295545" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 44774bf719336b8750acc3b8013afac2e04c11155fb48320a662e9d964ffae68 [INFO] running `Command { std: "docker" "start" "-a" "44774bf719336b8750acc3b8013afac2e04c11155fb48320a662e9d964ffae68", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "44774bf719336b8750acc3b8013afac2e04c11155fb48320a662e9d964ffae68", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "44774bf719336b8750acc3b8013afac2e04c11155fb48320a662e9d964ffae68", kill_on_drop: false }` [INFO] [stdout] 44774bf719336b8750acc3b8013afac2e04c11155fb48320a662e9d964ffae68 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+16fbf98f22730e073c09e7b03f0eafb87a295545" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] a5a85d0abae696498393836e9cf67c8684c7b729fcecc4eb52659c04bdf20d7c [INFO] running `Command { std: "docker" "start" "-a" "a5a85d0abae696498393836e9cf67c8684c7b729fcecc4eb52659c04bdf20d7c", kill_on_drop: false }` [INFO] [stderr] Compiling linked_list_design v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `borrow::Borrow` [INFO] [stdout] --> src/main.rs:1:11 [INFO] [stdout] | [INFO] [stdout] 1 | use std::{borrow::Borrow, rc::Rc}; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `val` and `next` are never read [INFO] [stdout] --> src/main.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 4 | struct Node { [INFO] [stdout] | ---- fields in this struct [INFO] [stdout] 5 | val: u32, [INFO] [stdout] | ^^^ [INFO] [stdout] 6 | next: Rc>, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Node` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `tail` is never read [INFO] [stdout] --> src/main.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 9 | struct LinkedList { [INFO] [stdout] | ---------- field in this struct [INFO] [stdout] 10 | head: Rc>, [INFO] [stdout] 11 | tail: Rc>, [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.33s [INFO] running `Command { std: "docker" "inspect" "a5a85d0abae696498393836e9cf67c8684c7b729fcecc4eb52659c04bdf20d7c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a5a85d0abae696498393836e9cf67c8684c7b729fcecc4eb52659c04bdf20d7c", kill_on_drop: false }` [INFO] [stdout] a5a85d0abae696498393836e9cf67c8684c7b729fcecc4eb52659c04bdf20d7c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+16fbf98f22730e073c09e7b03f0eafb87a295545" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] e031ea53c9a7407b38361e2ccebe7892dd11ae5171eaf4b801b0326f8384e124 [INFO] running `Command { std: "docker" "start" "-a" "e031ea53c9a7407b38361e2ccebe7892dd11ae5171eaf4b801b0326f8384e124", kill_on_drop: false }` [INFO] [stderr] Compiling linked_list_design v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `borrow::Borrow` [INFO] [stdout] --> src/main.rs:1:11 [INFO] [stdout] | [INFO] [stdout] 1 | use std::{borrow::Borrow, rc::Rc}; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `val` and `next` are never read [INFO] [stdout] --> src/main.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 4 | struct Node { [INFO] [stdout] | ---- fields in this struct [INFO] [stdout] 5 | val: u32, [INFO] [stdout] | ^^^ [INFO] [stdout] 6 | next: Rc>, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Node` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `tail` is never read [INFO] [stdout] --> src/main.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 9 | struct LinkedList { [INFO] [stdout] | ---------- field in this struct [INFO] [stdout] 10 | head: Rc>, [INFO] [stdout] 11 | tail: Rc>, [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.45s [INFO] running `Command { std: "docker" "inspect" "e031ea53c9a7407b38361e2ccebe7892dd11ae5171eaf4b801b0326f8384e124", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e031ea53c9a7407b38361e2ccebe7892dd11ae5171eaf4b801b0326f8384e124", kill_on_drop: false }` [INFO] [stdout] e031ea53c9a7407b38361e2ccebe7892dd11ae5171eaf4b801b0326f8384e124 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+16fbf98f22730e073c09e7b03f0eafb87a295545" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] e266909194c569b61a406542967e0d65f2fd295179b8d394a9876907194c6dcf [INFO] running `Command { std: "docker" "start" "-a" "e266909194c569b61a406542967e0d65f2fd295179b8d394a9876907194c6dcf", kill_on_drop: false }` [INFO] [stderr] warning: unused import: `borrow::Borrow` [INFO] [stderr] --> src/main.rs:1:11 [INFO] [stderr] | [INFO] [stderr] 1 | use std::{borrow::Borrow, rc::Rc}; [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: fields `val` and `next` are never read [INFO] [stderr] --> src/main.rs:5:5 [INFO] [stderr] | [INFO] [stderr] 4 | struct Node { [INFO] [stderr] | ---- fields in this struct [INFO] [stderr] 5 | val: u32, [INFO] [stderr] | ^^^ [INFO] [stderr] 6 | next: Rc>, [INFO] [stderr] | ^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `Node` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: field `tail` is never read [INFO] [stderr] --> src/main.rs:11:5 [INFO] [stderr] | [INFO] [stderr] 9 | struct LinkedList { [INFO] [stderr] | ---------- field in this struct [INFO] [stderr] 10 | head: Rc>, [INFO] [stderr] 11 | tail: Rc>, [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: `linked_list_design` (bin "linked_list_design" test) generated 3 warnings (run `cargo fix --bin "linked_list_design" --tests` to apply 1 suggestion) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/linked_list_design-b32d9e5966a13db3) [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "e266909194c569b61a406542967e0d65f2fd295179b8d394a9876907194c6dcf", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e266909194c569b61a406542967e0d65f2fd295179b8d394a9876907194c6dcf", kill_on_drop: false }` [INFO] [stdout] e266909194c569b61a406542967e0d65f2fd295179b8d394a9876907194c6dcf