[INFO] cloning repository https://github.com/tangkhaiphuong/rust-practice
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tangkhaiphuong/rust-practice" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftangkhaiphuong%2Frust-practice", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftangkhaiphuong%2Frust-practice'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bd082f2c129cf6336a895c13b563e8a3ce86decd
[INFO] checking tangkhaiphuong/rust-practice against master#8a65ee08296b36342bf7c3cdc15312ccbc357227 for pr-142704
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftangkhaiphuong%2Frust-practice" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tangkhaiphuong/rust-practice on toolchain 8a65ee08296b36342bf7c3cdc15312ccbc357227
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8a65ee08296b36342bf7c3cdc15312ccbc357227" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tangkhaiphuong/rust-practice
[INFO] finished tweaking git repo https://github.com/tangkhaiphuong/rust-practice
[INFO] tweaked toml for git repo https://github.com/tangkhaiphuong/rust-practice written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/tangkhaiphuong/rust-practice 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" "+8a65ee08296b36342bf7c3cdc15312ccbc357227" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded impl_ops v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8a65ee08296b36342bf7c3cdc15312ccbc357227" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 03c2a01d9880e3a8e12a66a806bf1559d90d90df51ce11d66346caba722a3a24
[INFO] running `Command { std: "docker" "start" "-a" "03c2a01d9880e3a8e12a66a806bf1559d90d90df51ce11d66346caba722a3a24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "03c2a01d9880e3a8e12a66a806bf1559d90d90df51ce11d66346caba722a3a24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03c2a01d9880e3a8e12a66a806bf1559d90d90df51ce11d66346caba722a3a24", kill_on_drop: false }`
[INFO] [stdout] 03c2a01d9880e3a8e12a66a806bf1559d90d90df51ce11d66346caba722a3a24
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8a65ee08296b36342bf7c3cdc15312ccbc357227" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e22364615e4b3aac10283ea39de6c7b6ac490eaffaa7d9c6040a6bf772652d10
[INFO] running `Command { std: "docker" "start" "-a" "e22364615e4b3aac10283ea39de6c7b6ac490eaffaa7d9c6040a6bf772652d10", kill_on_drop: false }`
[INFO] [stderr]     Checking impl_ops v0.1.1
[INFO] [stderr]     Checking practice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `IndexMut` and `Index`
[INFO] [stdout]  --> src/sort.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::{Index, IndexMut};
[INFO] [stdout]   |                ^^^^^  ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `IndexMut` and `Index`
[INFO] [stdout]  --> src/sort.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::{Index, IndexMut};
[INFO] [stdout]   |                ^^^^^  ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::cell::RefCell`
[INFO] [stdout]    --> src/lib.rs:111:9
[INFO] [stdout]     |
[INFO] [stdout] 111 |     use core::cell::RefCell;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/lib.rs:364:10
[INFO] [stdout]     |
[INFO] [stdout] 364 |         };
[INFO] [stdout]     |          ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/lib.rs:380:10
[INFO] [stdout]     |
[INFO] [stdout] 380 |         };
[INFO] [stdout]     |          ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/collection.rs:23:24
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub struct IntoIter<T>(LinkedList<T>);
[INFO] [stdout]    |            --------    ^^^^^^^^^^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `test_sorts::Person: Ord` is not satisfied
[INFO] [stdout]    --> src/lib.rs:166:19
[INFO] [stdout]     |
[INFO] [stdout] 166 |         sort(&mut data, |left, right| left.name > right.name);
[INFO] [stdout]     |         ----      ^^^^ the trait `Ord` is not implemented for `test_sorts::Person`
[INFO] [stdout]     |         |
[INFO] [stdout]     |         required by a bound introduced by this call
[INFO] [stdout]     |
[INFO] [stdout]     = note: required for `&test_sorts::Person` to implement `Ord`
[INFO] [stdout] note: required by a bound in `sort::sort`
[INFO] [stdout]    --> src/sort.rs:3:95
[INFO] [stdout]     |
[INFO] [stdout] 3   | pub fn sort<T:, F: Fn(&T, &T) -> bool>(array: &mut [T], compare: F) where T: Eq + PartialEq + Ord  {
[INFO] [stdout]     |                                                                                               ^^^ required by this bound in `sort`
[INFO] [stdout] help: consider annotating `test_sorts::Person` with `#[derive(Ord)]`
[INFO] [stdout]     |
[INFO] [stdout] 119 +     #[derive(Ord)]
[INFO] [stdout] 120 |     struct Person {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `test_sorts::Person: Ord` is not satisfied
[INFO] [stdout]    --> src/lib.rs:183:14
[INFO] [stdout]     |
[INFO] [stdout] 183 |         sort(&mut data, |left, right| left.name > right.name);
[INFO] [stdout]     |         ---- ^^^^^^^^^ the trait `Ord` is not implemented for `test_sorts::Person`
[INFO] [stdout]     |         |
[INFO] [stdout]     |         required by a bound introduced by this call
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `Ord` is implemented for `Box<T, A>`
[INFO] [stdout]     = note: required for `Box<test_sorts::Person>` to implement `Ord`
[INFO] [stdout] note: required by a bound in `sort::sort`
[INFO] [stdout]    --> src/sort.rs:3:95
[INFO] [stdout]     |
[INFO] [stdout] 3   | pub fn sort<T:, F: Fn(&T, &T) -> bool>(array: &mut [T], compare: F) where T: Eq + PartialEq + Ord  {
[INFO] [stdout]     |                                                                                               ^^^ required by this bound in `sort`
[INFO] [stdout] help: consider annotating `test_sorts::Person` with `#[derive(Ord)]`
[INFO] [stdout]     |
[INFO] [stdout] 119 +     #[derive(Ord)]
[INFO] [stdout] 120 |     struct Person {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::BorrowMut`
[INFO] [stdout]    --> src/lib.rs:277:9
[INFO] [stdout]     |
[INFO] [stdout] 277 |     use std::borrow::BorrowMut;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:204:13
[INFO] [stdout]     |
[INFO] [stdout] 204 |         let mut vec1 = fill_vec(&mut vec0);
[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: `future`
[INFO] [stdout]    --> src/lib.rs:357:13
[INFO] [stdout]     |
[INFO] [stdout] 357 |         let future = hello_world(); // Nothing is printed
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_future`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `practice` (lib test) due to 2 previous errors; 7 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "e22364615e4b3aac10283ea39de6c7b6ac490eaffaa7d9c6040a6bf772652d10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e22364615e4b3aac10283ea39de6c7b6ac490eaffaa7d9c6040a6bf772652d10", kill_on_drop: false }`
[INFO] [stdout] e22364615e4b3aac10283ea39de6c7b6ac490eaffaa7d9c6040a6bf772652d10
