[INFO] cloning repository https://github.com/NikitaMGrimm/rust-learning-problems [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/NikitaMGrimm/rust-learning-problems" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNikitaMGrimm%2Frust-learning-problems", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNikitaMGrimm%2Frust-learning-problems'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] aeefb4a9812508da36585c152c3a5a2fbbd38763 [INFO] testing NikitaMGrimm/rust-learning-problems against try#16fbf98f22730e073c09e7b03f0eafb87a295545 for pr-145628-retry-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNikitaMGrimm%2Frust-learning-problems" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/NikitaMGrimm/rust-learning-problems [INFO] finished tweaking git repo https://github.com/NikitaMGrimm/rust-learning-problems [INFO] tweaked toml for git repo https://github.com/NikitaMGrimm/rust-learning-problems written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/NikitaMGrimm/rust-learning-problems on toolchain 16fbf98f22730e073c09e7b03f0eafb87a295545 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+16fbf98f22730e073c09e7b03f0eafb87a295545" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/NikitaMGrimm/rust-learning-problems 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" "+16fbf98f22730e073c09e7b03f0eafb87a295545" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"` [INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest [INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest [INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "+16fbf98f22730e073c09e7b03f0eafb87a295545" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 72fb5b23de9a43cbbdfa0d48d53d285ef891b53da1be2093b2587c2cd8622d64 [INFO] running `Command { std: "docker" "start" "-a" "72fb5b23de9a43cbbdfa0d48d53d285ef891b53da1be2093b2587c2cd8622d64", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "72fb5b23de9a43cbbdfa0d48d53d285ef891b53da1be2093b2587c2cd8622d64", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "72fb5b23de9a43cbbdfa0d48d53d285ef891b53da1be2093b2587c2cd8622d64", kill_on_drop: false }` [INFO] [stdout] 72fb5b23de9a43cbbdfa0d48d53d285ef891b53da1be2093b2587c2cd8622d64 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "+16fbf98f22730e073c09e7b03f0eafb87a295545" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 2aa696c2d3850bf2aaac88bdf3138266d12d1bd2452c41f0c6496903feb43813 [INFO] running `Command { std: "docker" "start" "-a" "2aa696c2d3850bf2aaac88bdf3138266d12d1bd2452c41f0c6496903feb43813", kill_on_drop: false }` [INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"` [INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest [INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest [INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions [INFO] [stderr] Compiling libc v0.2.140 [INFO] [stderr] Compiling hello_multithread v0.1.0 (/opt/rustwide/workdir/RustBook/hello_multithread) [INFO] [stderr] Compiling blog_testing_oop_rusty v0.1.0 (/opt/rustwide/workdir/RustBook/blog_testing_oop_rusty) [INFO] [stderr] Compiling minigrep v0.1.0 (/opt/rustwide/workdir/RustBook/minigrep) [INFO] [stderr] Compiling blog_testing_oop v0.1.0 (/opt/rustwide/workdir/RustBook/blog_testing_oop) [INFO] [stderr] Compiling progress_bar v0.1.0 (/opt/rustwide/workdir/RustBook/progress_bar) [INFO] [stderr] Compiling calc_averages v0.1.0 (/opt/rustwide/workdir/RustBook/calc_averages) [INFO] [stderr] Compiling unsafe_testing v0.1.0 (/opt/rustwide/workdir/RustBook/unsafe_testing) [INFO] [stdout] warning: trait `Foo` is never used [INFO] [stdout] --> RustBook/unsafe_testing/src/main.rs:103:18 [INFO] [stdout] | [INFO] [stdout] 103 | unsafe trait Foo { [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `f2` is never read [INFO] [stdout] --> RustBook/unsafe_testing/src/main.rs:123:9 [INFO] [stdout] | [INFO] [stdout] 121 | union MyUnion { [INFO] [stdout] | ------- field in this union [INFO] [stdout] 122 | f1: u32, [INFO] [stdout] 123 | f2: f32, [INFO] [stdout] | ^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: creating a shared reference to mutable static [INFO] [stdout] --> RustBook/unsafe_testing/src/main.rs:99:33 [INFO] [stdout] | [INFO] [stdout] 99 | println!("COUNTER: {}", COUNTER); [INFO] [stdout] | ^^^^^^^ shared reference to mutable static [INFO] [stdout] | [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives [INFO] [stdout] = note: `#[warn(static_mut_refs)]` (part of `#[warn(rust_2024_compatibility)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling advanced_closures_testing v0.1.0 (/opt/rustwide/workdir/RustBook/advanced_closures_testing) [INFO] [stdout] warning: unused variable: `list_of_statuses1` [INFO] [stdout] --> RustBook/advanced_closures_testing/src/main.rs:47:9 [INFO] [stdout] | [INFO] [stdout] 47 | let list_of_statuses1: Vec = (0u32..20).map(Status::Value).collect(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_list_of_statuses1` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `list_of_statuses2` [INFO] [stdout] --> RustBook/advanced_closures_testing/src/main.rs:48:9 [INFO] [stdout] | [INFO] [stdout] 48 | let list_of_statuses2: Vec = (0u32..20).map(|x| Status::Value(x)).collect(); // same thing [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_list_of_statuses2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> RustBook/advanced_closures_testing/src/main.rs:13:11 [INFO] [stdout] | [INFO] [stdout] 13 | Value(u32), [INFO] [stdout] | ----- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 13 - Value(u32), [INFO] [stdout] 13 + Value(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `Stop` is never constructed [INFO] [stdout] --> RustBook/advanced_closures_testing/src/main.rs:14:5 [INFO] [stdout] | [INFO] [stdout] 12 | enum Status { [INFO] [stdout] | ------ variant in this enum [INFO] [stdout] 13 | Value(u32), [INFO] [stdout] 14 | Stop, [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `returns_closure1` is never used [INFO] [stdout] --> RustBook/advanced_closures_testing/src/main.rs:23:4 [INFO] [stdout] | [INFO] [stdout] 23 | fn returns_closure1() -> Box i32> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `returns_closure2` is never used [INFO] [stdout] --> RustBook/advanced_closures_testing/src/main.rs:27:4 [INFO] [stdout] | [INFO] [stdout] 27 | fn returns_closure2() -> fn(i32) -> i32 { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: static `hello` is never used [INFO] [stdout] --> RustBook/advanced_closures_testing/src/main.rs:31:8 [INFO] [stdout] | [INFO] [stdout] 31 | static hello: i32 = 1; [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: static variable `hello` should have an upper case name [INFO] [stdout] --> RustBook/advanced_closures_testing/src/main.rs:31:8 [INFO] [stdout] | [INFO] [stdout] 31 | static hello: i32 = 1; [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_upper_case_globals)]` (part of `#[warn(nonstandard_style)]`) on by default [INFO] [stdout] help: convert the identifier to upper case [INFO] [stdout] | [INFO] [stdout] 31 - static hello: i32 = 1; [INFO] [stdout] 31 + static HELLO: i32 = 1; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling lifetime_example v0.1.0 (/opt/rustwide/workdir/RustBook/lifetime_example) [INFO] [stdout] warning: function `longest_with_an_announcement` is never used [INFO] [stdout] --> RustBook/lifetime_example/src/main.rs:4:4 [INFO] [stdout] | [INFO] [stdout] 4 | fn longest_with_an_announcement<'a, T>( [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling variables v0.1.0 (/opt/rustwide/workdir/RustBook/variables) [INFO] [stderr] Compiling basic_mathematical_operations v0.1.0 (/opt/rustwide/workdir/Codewars/8kyu/basic_mathematical_operations) [INFO] [stdout] warning: function `basic_op` is never used [INFO] [stdout] --> Codewars/8kyu/basic_mathematical_operations/src/lib.rs:14:4 [INFO] [stdout] | [INFO] [stdout] 14 | fn basic_op(operator: char, value1: i32, value2: i32) -> i32 { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling threadpool_testing v0.1.0 (/opt/rustwide/workdir/RustBook/threadpool_testing) [INFO] [stderr] Compiling fibonacci_generator v0.1.0 (/opt/rustwide/workdir/RustBook/fibonacci_generator) [INFO] [stderr] Compiling another_function v0.1.0 (/opt/rustwide/workdir/RustBook/another_function) [INFO] [stderr] Compiling enums_and_pattern_matching v0.1.0 (/opt/rustwide/workdir/RustBook/enums_and_pattern_matching) [INFO] [stdout] warning: unused imports: `BufReader`, `Read`, and `fs::File` [INFO] [stdout] --> RustBook/another_function/src/main.rs:1:16 [INFO] [stdout] | [INFO] [stdout] 1 | use std::{io::{BufReader, Read}, fs::File, vec}; [INFO] [stdout] | ^^^^^^^^^ ^^^^ ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0618]: expected function, found `std::slice::Iter<'_, {integer}>` [INFO] [stdout] --> RustBook/another_function/src/main.rs:15:14 [INFO] [stdout] | [INFO] [stdout] 13 | let iter = vector.iter(); [INFO] [stdout] | ---- `iter` has type `std::slice::Iter<'_, {integer}>` [INFO] [stdout] 14 | [INFO] [stdout] 15 | for i in iter().clone() { [INFO] [stdout] | ^^^^-- [INFO] [stdout] | | [INFO] [stdout] | call expression requires function [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0618`. [INFO] [stdout] [INFO] [stderr] Compiling you_cant_code_under_pressure_1 v0.1.0 (/opt/rustwide/workdir/Codewars/8kyu/you_cant_code_under_pressure_1) [INFO] [stderr] error: could not compile `another_function` (bin "another_function") due to 1 previous error; 1 warning emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: function `double_integer` is never used [INFO] [stdout] --> Codewars/8kyu/you_cant_code_under_pressure_1/src/lib.rs:5:4 [INFO] [stdout] | [INFO] [stdout] 5 | fn double_integer(n: i32) -> i32 { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "2aa696c2d3850bf2aaac88bdf3138266d12d1bd2452c41f0c6496903feb43813", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2aa696c2d3850bf2aaac88bdf3138266d12d1bd2452c41f0c6496903feb43813", kill_on_drop: false }` [INFO] [stdout] 2aa696c2d3850bf2aaac88bdf3138266d12d1bd2452c41f0c6496903feb43813