[INFO] cloning repository https://github.com/reriliv/rust_study [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/reriliv/rust_study" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Freriliv%2Frust_study", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Freriliv%2Frust_study'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 43c9294986278fb3e72f56958abb5c4ed3fdf52a [INFO] checking reriliv/rust_study against try#804fff1ae95da9d03bd44eee27f258020a575dab for pr-146013 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Freriliv%2Frust_study" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/reriliv/rust_study [INFO] finished tweaking git repo https://github.com/reriliv/rust_study [INFO] tweaked toml for git repo https://github.com/reriliv/rust_study written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/reriliv/rust_study on toolchain 804fff1ae95da9d03bd44eee27f258020a575dab [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+804fff1ae95da9d03bd44eee27f258020a575dab" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/reriliv/rust_study 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" "+804fff1ae95da9d03bd44eee27f258020a575dab" "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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+804fff1ae95da9d03bd44eee27f258020a575dab" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 3e31f8b89e58050c4d8a995daf225324be417948e1c8fcc43eae3637c017b4fa [INFO] running `Command { std: "docker" "start" "-a" "3e31f8b89e58050c4d8a995daf225324be417948e1c8fcc43eae3637c017b4fa", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "3e31f8b89e58050c4d8a995daf225324be417948e1c8fcc43eae3637c017b4fa", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3e31f8b89e58050c4d8a995daf225324be417948e1c8fcc43eae3637c017b4fa", kill_on_drop: false }` [INFO] [stdout] 3e31f8b89e58050c4d8a995daf225324be417948e1c8fcc43eae3637c017b4fa [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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+804fff1ae95da9d03bd44eee27f258020a575dab" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 4229edff5fc035558ea8954044621a62c352b9ce4e2e2a37a98a41702fe6fedd [INFO] running `Command { std: "docker" "start" "-a" "4229edff5fc035558ea8954044621a62c352b9ce4e2e2a37a98a41702fe6fedd", kill_on_drop: false }` [INFO] [stderr] Checking rust_study v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `self::tree_data::Node` [INFO] [stdout] --> src/smart_pointer_15/mod.rs:26:5 [INFO] [stdout] | [INFO] [stdout] 26 | use self::tree_data::Node; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `self::tree_data::Node` [INFO] [stdout] --> src/smart_pointer_15/mod.rs:26:5 [INFO] [stdout] | [INFO] [stdout] 26 | use self::tree_data::Node; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `List` is never used [INFO] [stdout] --> src/smart_pointer_15/mod.rs:10:6 [INFO] [stdout] | [INFO] [stdout] 10 | enum List { [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `tail` is never used [INFO] [stdout] --> src/smart_pointer_15/mod.rs:16:8 [INFO] [stdout] | [INFO] [stdout] 15 | impl List { [INFO] [stdout] | --------- method in this implementation [INFO] [stdout] 16 | fn tail(&self) -> Option<&RefCell>> { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `Messenger` is never used [INFO] [stdout] --> src/smart_pointer_15/messenger.rs:41:11 [INFO] [stdout] | [INFO] [stdout] 41 | pub trait Messenger { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `LimitTracker` is never constructed [INFO] [stdout] --> src/smart_pointer_15/messenger.rs:45:12 [INFO] [stdout] | [INFO] [stdout] 45 | pub struct LimitTracker<'a, T: Messenger> { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `new` and `set_value` are never used [INFO] [stdout] --> src/smart_pointer_15/messenger.rs:55:12 [INFO] [stdout] | [INFO] [stdout] 51 | / impl<'a, T> LimitTracker<'a, T> [INFO] [stdout] 52 | | where [INFO] [stdout] 53 | | T: Messenger, [INFO] [stdout] | |_________________- associated items in this implementation [INFO] [stdout] 54 | { [INFO] [stdout] 55 | pub fn new(messenger: &'a T, max: usize) -> LimitTracker<'a, T> { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 62 | pub fn set_value(&mut self, value: usize) { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `value` and `children` are never read [INFO] [stdout] --> src/smart_pointer_15/tree_data.rs:6:9 [INFO] [stdout] | [INFO] [stdout] 5 | pub struct Node { [INFO] [stdout] | ---- fields in this struct [INFO] [stdout] 6 | pub value: i32, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 7 | pub parent: RefCell>, [INFO] [stdout] 8 | pub children: RefCell>>, [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] [INFO] [stdout] [INFO] [stdout] warning: enum `List` is never used [INFO] [stdout] --> src/smart_pointer_15/mod.rs:10:6 [INFO] [stdout] | [INFO] [stdout] 10 | enum List { [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `tail` is never used [INFO] [stdout] --> src/smart_pointer_15/mod.rs:16:8 [INFO] [stdout] | [INFO] [stdout] 15 | impl List { [INFO] [stdout] | --------- method in this implementation [INFO] [stdout] 16 | fn tail(&self) -> Option<&RefCell>> { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `value` and `children` are never read [INFO] [stdout] --> src/smart_pointer_15/tree_data.rs:6:9 [INFO] [stdout] | [INFO] [stdout] 5 | pub struct Node { [INFO] [stdout] | ---- fields in this struct [INFO] [stdout] 6 | pub value: i32, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 7 | pub parent: RefCell>, [INFO] [stdout] 8 | pub children: RefCell>>, [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] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.05s [INFO] running `Command { std: "docker" "inspect" "4229edff5fc035558ea8954044621a62c352b9ce4e2e2a37a98a41702fe6fedd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4229edff5fc035558ea8954044621a62c352b9ce4e2e2a37a98a41702fe6fedd", kill_on_drop: false }` [INFO] [stdout] 4229edff5fc035558ea8954044621a62c352b9ce4e2e2a37a98a41702fe6fedd