[INFO] cloning repository https://github.com/csvsoft/rust-note
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/csvsoft/rust-note" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcsvsoft%2Frust-note", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcsvsoft%2Frust-note'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 440fa47ce2d9f2a747bbf4e8d3bd543422b6fb7d
[INFO] checking csvsoft/rust-note against master#e9182f195b8505c87c4bd055b9f6e114ccda0981 for pr-144098
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcsvsoft%2Frust-note" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/csvsoft/rust-note
[INFO] finished tweaking git repo https://github.com/csvsoft/rust-note
[INFO] tweaked toml for git repo https://github.com/csvsoft/rust-note written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/csvsoft/rust-note on toolchain e9182f195b8505c87c4bd055b9f6e114ccda0981
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e9182f195b8505c87c4bd055b9f6e114ccda0981" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/csvsoft/rust-note 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" "+e9182f195b8505c87c4bd055b9f6e114ccda0981" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+e9182f195b8505c87c4bd055b9f6e114ccda0981" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 342a773c36d0c4b68ae30c71a853964049d82066182196640ee3c404e687d0a1
[INFO] running `Command { std: "docker" "start" "-a" "342a773c36d0c4b68ae30c71a853964049d82066182196640ee3c404e687d0a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "342a773c36d0c4b68ae30c71a853964049d82066182196640ee3c404e687d0a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "342a773c36d0c4b68ae30c71a853964049d82066182196640ee3c404e687d0a1", kill_on_drop: false }`
[INFO] [stdout] 342a773c36d0c4b68ae30c71a853964049d82066182196640ee3c404e687d0a1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+e9182f195b8505c87c4bd055b9f6e114ccda0981" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8401143616b7a3cfbe8b21f96e2e64c1637c5236ffbb42d15513d53ef6dcdbf1
[INFO] running `Command { std: "docker" "start" "-a" "8401143616b7a3cfbe8b21f96e2e64c1637c5236ffbb42d15513d53ef6dcdbf1", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-segmentation v1.3.0
[INFO] [stderr]     Checking rust_note v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `Messenger` is never used
[INFO] [stdout]  --> tests/test_rc_cell.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 4 | trait Messenger {
[INFO] [stdout]   |       ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MockMessager` is never constructed
[INFO] [stdout]  --> tests/test_rc_cell.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct MockMessager{
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> tests/test_rc_cell.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |         &self.sent_messages.borrow_mut().push(msg.to_string());
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 14 |         let _ = &self.sent_messages.borrow_mut().push(msg.to_string());
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `str_a`
[INFO] [stdout]   --> src/collection/mod.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let str_a = "stra".to_string();
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_str_a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `str_b`
[INFO] [stdout]   --> src/collection/mod.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |     let str_b = String::from("strb");
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_str_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `team_score`
[INFO] [stdout]   --> src/collection/mod.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 63 |     let team_score :HashMap<_,_>= teams.iter().zip(scores.iter()).collect();
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_team_score`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `str_a`
[INFO] [stdout]   --> src/collection/mod.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let str_a = "stra".to_string();
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_str_a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `median`
[INFO] [stdout]   --> src/collection/mod.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |     let median =  list[list.len()/2];
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_median`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/collection/mod.rs:88:13
[INFO] [stdout]    |
[INFO] [stdout] 88 |         let value = map.entry(x.clone()).or_insert(0);
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `avg`
[INFO] [stdout]   --> src/collection/mod.rs:92:11
[INFO] [stdout]    |
[INFO] [stdout] 92 |       let avg = sum/(list.len() as i32);
[INFO] [stdout]    |           ^^^ help: if this is intentional, prefix it with an underscore: `_avg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: functions used as tests can not have any arguments
[INFO] [stdout]    --> tests/thread.rs:101:1
[INFO] [stdout]     |
[INFO] [stdout] 101 | / fn reverse_str(str:&str) -> String{
[INFO] [stdout] 102 | |
[INFO] [stdout] 103 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `list_excercise` is never used
[INFO] [stdout]   --> src/collection/mod.rs:78:8
[INFO] [stdout]    |
[INFO] [stdout] 78 | pub fn list_excercise(mut list: Vec<i32>){
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `largest_num` is never used
[INFO] [stdout]  --> src/traits/mod.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn largest_num<T: PartialOrd + Copy>(list:&[T]) -> T{
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `vectInt` should have a snake case name
[INFO] [stdout]  --> src/collection/mod.rs:6:14
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let  mut vectInt = vec![1,2,3];
[INFO] [stdout]   |              ^^^^^^^ help: convert the identifier to snake case: `vect_int`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]   --> tests/test_deref.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |     use std::fs::File;
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> tests/test_rc.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let b = Con(3,Rc::clone(&a));
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `myBox` should have a snake case name
[INFO] [stdout]   --> tests/test_deref.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let myBox = MyBox::new(String::from("world"));
[INFO] [stdout]    |         ^^^^^ help: convert the identifier to snake case: `my_box`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> tests/test_rc.rs:22:13
[INFO] [stdout]    |
[INFO] [stdout] 22 |         let c = Con(4 ,Rc::clone(&a));
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]  --> tests/test_rc.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Con(i32,Rc<List>),
[INFO] [stdout]   |     --- ^^^ ^^^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     fields in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]   |
[INFO] [stdout] 6 -     Con(i32,Rc<List>),
[INFO] [stdout] 6 +     Con((),()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `str_b`
[INFO] [stdout]   --> src/collection/mod.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |     let str_b = String::from("strb");
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_str_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `team_score`
[INFO] [stdout]   --> src/collection/mod.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 63 |     let team_score :HashMap<_,_>= teams.iter().zip(scores.iter()).collect();
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_team_score`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `median`
[INFO] [stdout]   --> src/collection/mod.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |     let median =  list[list.len()/2];
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_median`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/collection/mod.rs:88:13
[INFO] [stdout]    |
[INFO] [stdout] 88 |         let value = map.entry(x.clone()).or_insert(0);
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `avg`
[INFO] [stdout]   --> src/collection/mod.rs:92:11
[INFO] [stdout]    |
[INFO] [stdout] 92 |       let avg = sum/(list.len() as i32);
[INFO] [stdout]    |           ^^^ help: if this is intentional, prefix it with an underscore: `_avg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `list_excercise` is never used
[INFO] [stdout]   --> src/collection/mod.rs:78:8
[INFO] [stdout]    |
[INFO] [stdout] 78 | pub fn list_excercise(mut list: Vec<i32>){
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `largest_num` is never used
[INFO] [stdout]  --> src/traits/mod.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn largest_num<T: PartialOrd + Copy>(list:&[T]) -> T{
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `vectInt` should have a snake case name
[INFO] [stdout]  --> src/collection/mod.rs:6:14
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let  mut vectInt = vec![1,2,3];
[INFO] [stdout]   |              ^^^^^^^ help: convert the identifier to snake case: `vect_int`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> tests/thread.rs:101:29
[INFO] [stdout]     |
[INFO] [stdout] 101 | fn reverse_str(str:&str) -> String{
[INFO] [stdout]     |    -----------              ^^^^^^ expected `String`, found `()`
[INFO] [stdout]     |    |
[INFO] [stdout]     |    implicitly returns `()` as its body has no tail or `return` expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> tests/thread.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |     for i in 0..10{
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[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 E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_note` (test "thread") due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "8401143616b7a3cfbe8b21f96e2e64c1637c5236ffbb42d15513d53ef6dcdbf1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8401143616b7a3cfbe8b21f96e2e64c1637c5236ffbb42d15513d53ef6dcdbf1", kill_on_drop: false }`
[INFO] [stdout] 8401143616b7a3cfbe8b21f96e2e64c1637c5236ffbb42d15513d53ef6dcdbf1