[INFO] cloning repository https://github.com/cvuillecard/BTree
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cvuillecard/BTree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcvuillecard%2FBTree", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcvuillecard%2FBTree'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 72005f82d1b2c8dd44abc11a6f8522102c413134
[INFO] checking cvuillecard/BTree against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcvuillecard%2FBTree" "/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/cvuillecard/BTree
[INFO] finished tweaking git repo https://github.com/cvuillecard/BTree
[INFO] tweaked toml for git repo https://github.com/cvuillecard/BTree written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/cvuillecard/BTree on toolchain bca37a20bd376ce3fd138e7cdee7fe704e0f8814
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/cvuillecard/BTree 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" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e41f276800cbad5c6ff6b7edcfdd0482d2682da62e0ba87994c59ddbdd333aad
[INFO] running `Command { std: "docker" "start" "-a" "e41f276800cbad5c6ff6b7edcfdd0482d2682da62e0ba87994c59ddbdd333aad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e41f276800cbad5c6ff6b7edcfdd0482d2682da62e0ba87994c59ddbdd333aad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e41f276800cbad5c6ff6b7edcfdd0482d2682da62e0ba87994c59ddbdd333aad", kill_on_drop: false }`
[INFO] [stdout] e41f276800cbad5c6ff6b7edcfdd0482d2682da62e0ba87994c59ddbdd333aad
[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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e2b731ab02bffe572b253a69ccc8e14b880aa618b4cb62c7f57388810f24c0f0
[INFO] running `Command { std: "docker" "start" "-a" "e2b731ab02bffe572b253a69ccc8e14b880aa618b4cb62c7f57388810f24c0f0", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling crossbeam-queue v0.3.2
[INFO] [stderr]     Checking crossbeam-epoch v0.9.5
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking crossbeam v0.8.1
[INFO] [stderr]     Checking BTree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Into`
[INFO] [stdout]  --> src/btree/mod.rs:7:26
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::convert::{From, Into};
[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 imports: `fmt` and `thread`
[INFO] [stdout]  --> src/btree/mod.rs:9:11
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::{fmt, thread};
[INFO] [stdout]   |           ^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]   --> src/btree/mod.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::borrow::Borrow;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Receiver` and `Sender`
[INFO] [stdout]   --> src/btree/mod.rs:11:23
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::sync::mpsc::{Sender, Receiver};
[INFO] [stdout]    |                       ^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::mpsc`
[INFO] [stdout]   --> src/btree/mod.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::sync::mpsc;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::slice::ChunksMut`
[INFO] [stdout]   --> src/btree/mod.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::slice::ChunksMut;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Into`
[INFO] [stdout]  --> src/btree/mod.rs:7:26
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::convert::{From, Into};
[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 imports: `fmt` and `thread`
[INFO] [stdout]  --> src/btree/mod.rs:9:11
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::{fmt, thread};
[INFO] [stdout]   |           ^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]   --> src/btree/mod.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::borrow::Borrow;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Receiver` and `Sender`
[INFO] [stdout]   --> src/btree/mod.rs:11:23
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::sync::mpsc::{Sender, Receiver};
[INFO] [stdout]    |                       ^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::mpsc`
[INFO] [stdout]   --> src/btree/mod.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::sync::mpsc;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::slice::ChunksMut`
[INFO] [stdout]   --> src/btree/mod.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::slice::ChunksMut;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `scope`
[INFO] [stdout]    --> src/btree/mod.rs:135:33
[INFO] [stdout]     |
[INFO] [stdout] 135 |             spawner.spawn(move |scope| {
[INFO] [stdout]     |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_scope`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MAX_SIZE` is never used
[INFO] [stdout]   --> src/btree/mod.rs:17:11
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub const MAX_SIZE: usize = 500000;
[INFO] [stdout]    |           ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ARITY` is never used
[INFO] [stdout]   --> src/btree/mod.rs:18:11
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub const ARITY: usize = 2;
[INFO] [stdout]    |           ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]   --> src/btree/mod.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Node<T> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/btree/mod.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl<T: 'static + Sized + PartialOrd + PartialEq + Sync + Send> Node<T> {
[INFO] [stdout]    | ----------------------------------------------------------------------- associated function in this implementation
[INFO] [stdout] 26 |     pub fn new(data: T) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `VecBtree` is never constructed
[INFO] [stdout]   --> src/btree/mod.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub struct VecBtree<T> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `FromIteratorSized` is never used
[INFO] [stdout]   --> src/btree/mod.rs:38:11
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub trait FromIteratorSized<T>: FromIterator<T> {
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]   --> src/btree/mod.rs:62:12
[INFO] [stdout]    |
[INFO] [stdout] 60 | impl<T: 'static + Sized + PartialOrd + PartialEq + Sync + Send> VecBtree<T> {
[INFO] [stdout]    | --------------------------------------------------------------------------- associated items in this implementation
[INFO] [stdout] 61 |
[INFO] [stdout] 62 |     pub fn new(size: Option<usize>) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 72 |     pub fn root(&mut self) -> &mut Node<T> { &mut self.buf[0] }
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 73 |
[INFO] [stdout] 74 |     pub fn left(&mut self, idx: usize) -> usize { ARITY * idx + 1 }
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 75 |
[INFO] [stdout] 76 |     pub fn right(&mut self, idx: usize) -> usize { ARITY * idx + 2 }
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 77 |
[INFO] [stdout] 78 |     pub fn parent(&mut self, idx: usize) -> usize { (idx - 1) / 2 }
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 79 |
[INFO] [stdout] 80 |     pub fn push(&mut self, data: T) -> &mut Self {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 85 |     pub fn search(&mut self, data: &T) -> Option<&mut T> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 89 |     fn binary_search(&mut self, data: &T, start_idx: &mut isize, end_idx: &mut isize) -> Option<&mut T> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `binary_search` is never used
[INFO] [stdout]    --> src/btree/mod.rs:105:4
[INFO] [stdout]     |
[INFO] [stdout] 105 | fn binary_search<'a, T: std::cmp::PartialEq + std::cmp::PartialOrd>(buf: &'a [Node<T>], data: &'a T, start_idx: &'a isize, end_idx:...
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `search_by_chunk` is never used
[INFO] [stdout]    --> src/btree/mod.rs:123:4
[INFO] [stdout]     |
[INFO] [stdout] 123 | fn search_by_chunk<T: PartialEq + PartialOrd + Sync + Send + Copy + Debug>(btree: &mut VecBtree<T>, data: &T, chunk_size: usize) ->...
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/btree/mod.rs:129:5
[INFO] [stdout]     |
[INFO] [stdout] 129 | /     crossbeam::scope(|spawner| {
[INFO] [stdout] 130 | |         for (i, line) in lines.into_iter().enumerate() {
[INFO] [stdout] 131 | |             if !r.is_empty() {
[INFO] [stdout] 132 | |                 break;
[INFO] [stdout] ...   |
[INFO] [stdout] 142 | |     });
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 129 |     let _ = crossbeam::scope(|spawner| {
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/btree/mod.rs:138:21
[INFO] [stdout]     |
[INFO] [stdout] 138 |                     sender.send((i, *v));
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 138 |                     let _ = sender.send((i, *v));
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `scope`
[INFO] [stdout]    --> src/btree/mod.rs:135:33
[INFO] [stdout]     |
[INFO] [stdout] 135 |             spawner.spawn(move |scope| {
[INFO] [stdout]     |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_scope`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/btree/mod.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl<T: 'static + Sized + PartialOrd + PartialEq + Sync + Send> Node<T> {
[INFO] [stdout]    | ----------------------------------------------------------------------- associated function in this implementation
[INFO] [stdout] 26 |     pub fn new(data: T) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/btree/mod.rs:129:5
[INFO] [stdout]     |
[INFO] [stdout] 129 | /     crossbeam::scope(|spawner| {
[INFO] [stdout] 130 | |         for (i, line) in lines.into_iter().enumerate() {
[INFO] [stdout] 131 | |             if !r.is_empty() {
[INFO] [stdout] 132 | |                 break;
[INFO] [stdout] ...   |
[INFO] [stdout] 142 | |     });
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 129 |     let _ = crossbeam::scope(|spawner| {
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/btree/mod.rs:138:21
[INFO] [stdout]     |
[INFO] [stdout] 138 |                     sender.send((i, *v));
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 138 |                     let _ = sender.send((i, *v));
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.05s
[INFO] running `Command { std: "docker" "inspect" "e2b731ab02bffe572b253a69ccc8e14b880aa618b4cb62c7f57388810f24c0f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2b731ab02bffe572b253a69ccc8e14b880aa618b4cb62c7f57388810f24c0f0", kill_on_drop: false }`
[INFO] [stdout] e2b731ab02bffe572b253a69ccc8e14b880aa618b4cb62c7f57388810f24c0f0
