[INFO] cloning repository https://github.com/Jekahome/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/Jekahome/Data_Structures" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJekahome%2FData_Structures", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJekahome%2FData_Structures'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 971ee35923cb7022d6dc705e0f7a729d31e5706b
[INFO] checking Jekahome/Data_Structures against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJekahome%2FData_Structures" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Jekahome/Data_Structures on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Jekahome/Data_Structures
[INFO] removed 1 missing examples
[INFO] finished tweaking git repo https://github.com/Jekahome/Data_Structures
[INFO] tweaked toml for git repo https://github.com/Jekahome/Data_Structures written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/Jekahome/Data_Structures already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] adf209e158c045fd6aed214c507c2e3f8a764eae0e7d2e0cca0a6158125c82ea
[INFO] running `Command { std: "docker" "start" "-a" "adf209e158c045fd6aed214c507c2e3f8a764eae0e7d2e0cca0a6158125c82ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "adf209e158c045fd6aed214c507c2e3f8a764eae0e7d2e0cca0a6158125c82ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "adf209e158c045fd6aed214c507c2e3f8a764eae0e7d2e0cca0a6158125c82ea", kill_on_drop: false }`
[INFO] [stdout] adf209e158c045fd6aed214c507c2e3f8a764eae0e7d2e0cca0a6158125c82ea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1bdd48c2a3847f122e97f2b6cd80d2dc2fdc25fe5d92b399b222591763f19229
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1bdd48c2a3847f122e97f2b6cd80d2dc2fdc25fe5d92b399b222591763f19229", kill_on_drop: false }`
[INFO] [stderr]     Checking ds v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::fmt`
[INFO] [stdout]   --> examples/Data_Structures_2/Linked_list_generic.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::fmt;
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/Data_Structures_2/Linked_list_generic.rs:41:17
[INFO] [stdout]    |
[INFO] [stdout] 41 |             let mut node_clone = std::mem::replace(&mut self.next, Box::new(Some(node_next)));
[INFO] [stdout]    |                 ----^^^^^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `search`
[INFO] [stdout]   --> examples/Data_Structures_2/Linked_list_generic.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn search(&self,data:T)->Option<&Node<T>>{
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `search`
[INFO] [stdout]   --> examples/Data_Structures_2/Linked_list_generic.rs:97:8
[INFO] [stdout]    |
[INFO] [stdout] 97 |     fn search(&self,data:T)->Option<&Node<T>>{
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected item after doc comment
[INFO] [stdout]  --> examples/Data_Structures_1/Queue_priority.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | / /// cargo run --example queue-priority
[INFO] [stdout] 3 | | ///
[INFO] [stdout] 4 | | /// Очередь с приоритетом - это особый тип очереди, в которой каждый элемент свя...
[INFO] [stdout] 5 | | /// со значением приоритета .
[INFO] [stdout] 6 | | /// И элементы обслуживаются на основе их приоритета.
[INFO] [stdout]   | |_____________________________________________________- other attributes here
[INFO] [stdout] 7 |   /// То есть первыми обслуживаются элементы с более высоким приоритетом.
[INFO] [stdout]   |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this doc comment doesn't document anything
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ds` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> examples/Data_Structures_1/Queue_rc.rs:114:9
[INFO] [stdout]     |
[INFO] [stdout] 114 |     let mut node1 = Node::<i32>::new(1);
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> examples/Data_Structures_1/Queue_rc.rs:115:9
[INFO] [stdout]     |
[INFO] [stdout] 115 |     let mut node2 = Node::<i32>::new(2);
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> examples/Data_Structures_1/Queue_rc.rs:116:9
[INFO] [stdout]     |
[INFO] [stdout] 116 |     let mut node3 = Node::<i32>::new(3);
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> examples/Data_Structures_1/Queue_rc.rs:129:9
[INFO] [stdout]     |
[INFO] [stdout] 129 |     let mut node4 = Node::<i32>::new(4);
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `peek_all`
[INFO] [stdout]   --> examples/Data_Structures_1/Queue_rc.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn peek_all<'b>(&'b self,buf:&mut Vec<&'b T>){
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `peek`
[INFO] [stdout]   --> examples/Data_Structures_1/Queue_rc.rs:86:8
[INFO] [stdout]    |
[INFO] [stdout] 86 |     fn peek(&self) -> Option<&T> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `peek_all`
[INFO] [stdout]   --> examples/Data_Structures_1/Queue_rc.rs:92:8
[INFO] [stdout]    |
[INFO] [stdout] 92 |     fn peek_all<'b>(&'b self,buf:&mut Vec<&'b T>){
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `length`
[INFO] [stdout]   --> examples/Data_Structures_1/Queue_rc.rs:97:8
[INFO] [stdout]    |
[INFO] [stdout] 97 |     fn length(&self) -> usize {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_empty`
[INFO] [stdout]    --> examples/Data_Structures_1/Queue_rc.rs:100:8
[INFO] [stdout]     |
[INFO] [stdout] 100 |     fn is_empty(&self) -> bool {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt`
[INFO] [stdout]   --> examples/Data_Structures_2/Linked_list.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::fmt;
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Duration`, `UNIX_EPOCH`
[INFO] [stdout]    --> examples/Data_Structures_2/Linked_list.rs:117:17
[INFO] [stdout]     |
[INFO] [stdout] 117 | use std::time::{Duration, SystemTime,UNIX_EPOCH};
[INFO] [stdout]     |                 ^^^^^^^^             ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/Data_Structures_2/Linked_list.rs:43:17
[INFO] [stdout]    |
[INFO] [stdout] 43 |             let mut node_clone = std::mem::replace(&mut self.next, Box::new(Some(node_next)));
[INFO] [stdout]    |                 ----^^^^^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> examples/Data_Structures_1/Stack.rs:59:9
[INFO] [stdout]    |
[INFO] [stdout] 59 |     let a:&[i32] = &d[..];
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `peek`
[INFO] [stdout]   --> examples/Data_Structures_1/Stack.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 |     fn peek(&self)->Option<&T>{
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `isEmpty`
[INFO] [stdout]   --> examples/Data_Structures_1/Stack.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn isEmpty(&self)->bool{
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `isEmpty` should have a snake case name
[INFO] [stdout]   --> examples/Data_Structures_1/Stack.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn isEmpty(&self)->bool{
[INFO] [stdout]    |        ^^^^^^^ help: convert the identifier to snake case: `is_empty`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0601]: `main` function not found in crate `binary_search`
[INFO] [stdout]   --> examples/binary_search.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout] 1  | / use std::cmp::Ordering;
[INFO] [stdout] 2  | |
[INFO] [stdout] 3  | | ///
[INFO] [stdout] 4  | | /// Perform a binary search on a sorted list
[INFO] [stdout] ...  |
[INFO] [stdout] 36 | |     assert_eq!(None, binary_search(1, &[]));
[INFO] [stdout] 37 | | }
[INFO] [stdout]    | |_^ consider adding a `main` function to `examples/binary_search.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `search`
[INFO] [stdout]   --> examples/Data_Structures_2/Linked_list.rs:58:8
[INFO] [stdout]    |
[INFO] [stdout] 58 |     fn search(&self,data:i32)->Option<&Node>{
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `search`
[INFO] [stdout]   --> examples/Data_Structures_2/Linked_list.rs:99:8
[INFO] [stdout]    |
[INFO] [stdout] 99 |     fn search(&self,data:i32)->Option<&Node>{
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `peek`
[INFO] [stdout]   --> examples/Data_Structures_1/Queue.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 |     fn peek(&self) -> Option<&T> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `length`
[INFO] [stdout]   --> examples/Data_Structures_1/Queue.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 |     fn length(&self) -> usize {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "1bdd48c2a3847f122e97f2b6cd80d2dc2fdc25fe5d92b399b222591763f19229", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1bdd48c2a3847f122e97f2b6cd80d2dc2fdc25fe5d92b399b222591763f19229", kill_on_drop: false }`
[INFO] [stdout] 1bdd48c2a3847f122e97f2b6cd80d2dc2fdc25fe5d92b399b222591763f19229