[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-145342-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdkoytrom%2Fdata_structures" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-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-5-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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 3da32b3a6559b63cb895c2348bbc98478f56a500c498f2d764bb8063658f3340 [INFO] running `Command { std: "docker" "start" "-a" "3da32b3a6559b63cb895c2348bbc98478f56a500c498f2d764bb8063658f3340", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "3da32b3a6559b63cb895c2348bbc98478f56a500c498f2d764bb8063658f3340", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3da32b3a6559b63cb895c2348bbc98478f56a500c498f2d764bb8063658f3340", kill_on_drop: false }` [INFO] [stdout] 3da32b3a6559b63cb895c2348bbc98478f56a500c498f2d764bb8063658f3340 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 132937dc3c88dc970ed800e63d4d7a1514726822c315dcd2a797e1b99d84c5e7 [INFO] running `Command { std: "docker" "start" "-a" "132937dc3c88dc970ed800e63d4d7a1514726822c315dcd2a797e1b99d84c5e7", 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 BTree { [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 Node { [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 { [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 List { [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` [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: method `print` is never used [INFO] [stdout] --> src/btree.rs:37:12 [INFO] [stdout] | [INFO] [stdout] 9 | impl BTree { [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 Node { [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 { [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 List { [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` [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 0.41s [INFO] running `Command { std: "docker" "inspect" "132937dc3c88dc970ed800e63d4d7a1514726822c315dcd2a797e1b99d84c5e7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "132937dc3c88dc970ed800e63d4d7a1514726822c315dcd2a797e1b99d84c5e7", kill_on_drop: false }` [INFO] [stdout] 132937dc3c88dc970ed800e63d4d7a1514726822c315dcd2a797e1b99d84c5e7