[INFO] cloning repository https://github.com/dkoytrom/data_structures
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dkoytrom/data_structures" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdkoytrom%2Fdata_structures", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdkoytrom%2Fdata_structures'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2ec6fb40995285b89a074ee03f49041a711fde2a
[INFO] checking dkoytrom/data_structures against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145342
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdkoytrom%2Fdata_structures" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/dkoytrom/data_structures
[INFO] finished tweaking git repo https://github.com/dkoytrom/data_structures
[INFO] tweaked toml for git repo https://github.com/dkoytrom/data_structures written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/dkoytrom/data_structures on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/dkoytrom/data_structures 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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "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-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c7049eb96177b2ebc5691aa0bc14fea79e6329cae072bc4c2c41cae40625d33e
[INFO] running `Command { std: "docker" "start" "-a" "c7049eb96177b2ebc5691aa0bc14fea79e6329cae072bc4c2c41cae40625d33e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c7049eb96177b2ebc5691aa0bc14fea79e6329cae072bc4c2c41cae40625d33e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7049eb96177b2ebc5691aa0bc14fea79e6329cae072bc4c2c41cae40625d33e", kill_on_drop: false }`
[INFO] [stdout] c7049eb96177b2ebc5691aa0bc14fea79e6329cae072bc4c2c41cae40625d33e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3ae5b414cd5912c790cc5a8bce0c22fe8e14d8ca171904a7e28c15803f65e849
[INFO] running `Command { std: "docker" "start" "-a" "3ae5b414cd5912c790cc5a8bce0c22fe8e14d8ca171904a7e28c15803f65e849", kill_on_drop: false }`
[INFO] [stderr]     Checking smart_pointers v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `print` is never used
[INFO] [stdout]   --> src/btree.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl<T: PartialEq + Debug + PartialOrd> BTree<T> {
[INFO] [stdout]    | ------------------------------------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 37 |     pub fn print(&self) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `print` is never used
[INFO] [stdout]    --> src/btree.rs:118:8
[INFO] [stdout]     |
[INFO] [stdout]  54 | impl<T: PartialOrd + PartialEq + Debug> Node<T> {
[INFO] [stdout]     | ----------------------------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 118 |     fn print(&self) {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `data` is never read
[INFO] [stdout]  --> src/list.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct ListNode<T> {
[INFO] [stdout]   |            -------- field in this struct
[INFO] [stdout] 8 |     data: T,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Iter` is never constructed
[INFO] [stdout]   --> src/list.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct Iter<'a, T> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `IterMut` is never constructed
[INFO] [stdout]   --> src/list.rs:42:12
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub struct IterMut<'a, T> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `push_front`, `iter`, `iter_mut`, and `print` are never used
[INFO] [stdout]    --> src/list.rs:81:12
[INFO] [stdout]     |
[INFO] [stdout]  72 | impl<T: Debug> List<T> {
[INFO] [stdout]     | ---------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  81 |     pub fn push_front(&mut self, data: T) {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 131 |     pub fn iter(&self) -> Iter<'_, T> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 140 |     pub fn iter_mut(&mut self) -> IterMut<'_, T> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 149 |     pub fn print(&self) {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `print` is never used
[INFO] [stdout]   --> src/btree.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl<T: PartialEq + Debug + PartialOrd> BTree<T> {
[INFO] [stdout]    | ------------------------------------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 37 |     pub fn print(&self) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `print` is never used
[INFO] [stdout]    --> src/btree.rs:118:8
[INFO] [stdout]     |
[INFO] [stdout]  54 | impl<T: PartialOrd + PartialEq + Debug> Node<T> {
[INFO] [stdout]     | ----------------------------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 118 |     fn print(&self) {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `data` is never read
[INFO] [stdout]  --> src/list.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct ListNode<T> {
[INFO] [stdout]   |            -------- field in this struct
[INFO] [stdout] 8 |     data: T,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Iter` is never constructed
[INFO] [stdout]   --> src/list.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct Iter<'a, T> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `IterMut` is never constructed
[INFO] [stdout]   --> src/list.rs:42:12
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub struct IterMut<'a, T> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `push_front`, `iter`, `iter_mut`, and `print` are never used
[INFO] [stdout]    --> src/list.rs:81:12
[INFO] [stdout]     |
[INFO] [stdout]  72 | impl<T: Debug> List<T> {
[INFO] [stdout]     | ---------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  81 |     pub fn push_front(&mut self, data: T) {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 131 |     pub fn iter(&self) -> Iter<'_, T> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 140 |     pub fn iter_mut(&mut self) -> IterMut<'_, T> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 149 |     pub fn print(&self) {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::forget` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/list.rs:163:17
[INFO] [stdout]     |
[INFO] [stdout] 163 |         let _ = mem::forget(self);
[INFO] [stdout]     |                 ^^^^^^^^^^^^----^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             argument has type `&mut List<T>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     = note: `#[warn(forgetting_references)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::forget` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/list.rs:163:17
[INFO] [stdout]     |
[INFO] [stdout] 163 |         let _ = mem::forget(self);
[INFO] [stdout]     |                 ^^^^^^^^^^^^----^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             argument has type `&mut List<T>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     = note: `#[warn(forgetting_references)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] running `Command { std: "docker" "inspect" "3ae5b414cd5912c790cc5a8bce0c22fe8e14d8ca171904a7e28c15803f65e849", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ae5b414cd5912c790cc5a8bce0c22fe8e14d8ca171904a7e28c15803f65e849", kill_on_drop: false }`
[INFO] [stdout] 3ae5b414cd5912c790cc5a8bce0c22fe8e14d8ca171904a7e28c15803f65e849
