[INFO] cloning repository https://github.com/infynyxx/hello_rust [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/infynyxx/hello_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Finfynyxx%2Fhello_rust"` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Finfynyxx%2Fhello_rust'... [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] da79a0496865ebe37e5a38eb8ed33287e3af25c8 [INFO] checking infynyxx/hello_rust against master#74e80468347471779be6060d8d7d6d04e98e467f for pr-72788 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Finfynyxx%2Fhello_rust" "/workspace/builds/worker-8/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/infynyxx/hello_rust on toolchain 74e80468347471779be6060d8d7d6d04e98e467f [INFO] running `"/workspace/cargo-home/bin/cargo" "+74e80468347471779be6060d8d7d6d04e98e467f" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/infynyxx/hello_rust [INFO] finished tweaking git repo https://github.com/infynyxx/hello_rust [INFO] tweaked toml for git repo https://github.com/infynyxx/hello_rust written to /workspace/builds/worker-8/source/Cargo.toml [INFO] crate git repo https://github.com/infynyxx/hello_rust already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+74e80468347471779be6060d8d7d6d04e98e467f" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+74e80468347471779be6060d8d7d6d04e98e467f" "check" "--frozen" "--all" "--all-targets"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] cfb7ecdbfa5aa6e5830826c649e8a31fbb44eb9f0cbbaa74853c7e9161113082 [INFO] running `"docker" "start" "-a" "cfb7ecdbfa5aa6e5830826c649e8a31fbb44eb9f0cbbaa74853c7e9161113082"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] Compiling libc v0.2.70 [INFO] [stderr] Compiling syn v1.0.23 [INFO] [stderr] Checking futures-core v0.3.5 [INFO] [stderr] Compiling proc-macro-nested v0.1.4 [INFO] [stderr] Checking futures-sink v0.3.5 [INFO] [stderr] Checking once_cell v1.4.0 [INFO] [stderr] Checking pin-utils v0.1.0 [INFO] [stderr] Checking futures-io v0.3.5 [INFO] [stderr] Checking arc-swap v0.4.6 [INFO] [stderr] Checking bytes v0.5.4 [INFO] [stderr] Checking remove_dir_all v0.5.2 [INFO] [stderr] Checking pin-project-lite v0.1.5 [INFO] [stderr] Checking fnv v1.0.7 [INFO] [stderr] Checking assert_approx_eq v1.1.0 [INFO] [stderr] Compiling proc-macro2 v1.0.17 [INFO] [stderr] Checking futures-channel v0.3.5 [INFO] [stderr] Checking futures-task v0.3.5 [INFO] [stderr] Compiling quote v1.0.6 [INFO] [stderr] Checking getrandom v0.1.14 [INFO] [stderr] Checking net2 v0.2.34 [INFO] [stderr] Checking iovec v0.1.4 [INFO] [stderr] Checking signal-hook-registry v1.2.0 [INFO] [stderr] Checking num_cpus v1.13.0 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking mio v0.6.22 [INFO] [stderr] Checking rand_chacha v0.2.2 [INFO] [stderr] Checking rand v0.7.3 [INFO] [stderr] Checking mio-uds v0.6.8 [INFO] [stderr] Checking tempfile v3.1.0 [INFO] [stderr] Compiling pin-project-internal v0.4.17 [INFO] [stderr] Compiling futures-macro v0.3.5 [INFO] [stderr] Compiling tokio-macros v0.2.5 [INFO] [stderr] Checking tokio v0.2.21 [INFO] [stderr] Checking pin-project v0.4.17 [INFO] [stderr] Checking futures-util v0.3.5 [INFO] [stderr] Checking futures-executor v0.3.5 [INFO] [stderr] Checking futures v0.3.5 [INFO] [stderr] Checking hello_rust v0.0.1 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused import: `std::fs::File` [INFO] [stderr] --> src/error_handling.rs:1:5 [INFO] [stderr] | [INFO] [stderr] 1 | use std::fs::File; [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::io` [INFO] [stderr] --> src/error_handling.rs:2:5 [INFO] [stderr] | [INFO] [stderr] 2 | use std::io; [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::io::Read` [INFO] [stderr] --> src/error_handling.rs:3:5 [INFO] [stderr] | [INFO] [stderr] 3 | use std::io::Read; [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::io::Write` [INFO] [stderr] --> src/error_handling.rs:4:5 [INFO] [stderr] | [INFO] [stderr] 4 | use std::io::Write; [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `tempfile::tempdir` [INFO] [stderr] --> src/error_handling.rs:5:5 [INFO] [stderr] | [INFO] [stderr] 5 | use tempfile::tempdir; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused doc comment [INFO] [stderr] --> src/generics.rs:67:5 [INFO] [stderr] | [INFO] [stderr] 67 | / /** [INFO] [stderr] 68 | | if (switch) { [INFO] [stderr] 69 | | NewsArticle { [INFO] [stderr] 70 | | headline: "Hello World".to_string(), [INFO] [stderr] ... | [INFO] [stderr] 81 | | } [INFO] [stderr] 82 | | }**/ [INFO] [stderr] | |________^ [INFO] [stderr] 83 | / Tweet { [INFO] [stderr] 84 | | username: "infynyxx".to_string(), [INFO] [stderr] 85 | | content: "Hello World!".to_string(), [INFO] [stderr] 86 | | reply: false, [INFO] [stderr] 87 | | retweet: false, [INFO] [stderr] 88 | | } [INFO] [stderr] | |_____- rustdoc does not generate documentation for expressions [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_doc_comments)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused doc comment [INFO] [stderr] --> src/generics.rs:67:5 [INFO] [stderr] | [INFO] [stderr] 67 | / /** [INFO] [stderr] 68 | | if (switch) { [INFO] [stderr] 69 | | NewsArticle { [INFO] [stderr] 70 | | headline: "Hello World".to_string(), [INFO] [stderr] ... | [INFO] [stderr] 81 | | } [INFO] [stderr] 82 | | }**/ [INFO] [stderr] | |________^ [INFO] [stderr] 83 | / Tweet { [INFO] [stderr] 84 | | username: "infynyxx".to_string(), [INFO] [stderr] 85 | | content: "Hello World!".to_string(), [INFO] [stderr] 86 | | reply: false, [INFO] [stderr] 87 | | retweet: false, [INFO] [stderr] 88 | | } [INFO] [stderr] | |_____- rustdoc does not generate documentation for expressions [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_doc_comments)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `t` [INFO] [stderr] --> src/generics.rs:58:24 [INFO] [stderr] | [INFO] [stderr] 58 | fn some_function(t: T, u: U) -> i32 [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `u` [INFO] [stderr] --> src/generics.rs:58:30 [INFO] [stderr] | [INFO] [stderr] 58 | fn some_function(t: T, u: U) -> i32 [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_u` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `switch` [INFO] [stderr] --> src/generics.rs:66:21 [INFO] [stderr] | [INFO] [stderr] 66 | fn get_summarizable(switch: bool) -> impl Summary { [INFO] [stderr] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_switch` [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `V4` [INFO] [stderr] --> src/enums.rs:3:5 [INFO] [stderr] | [INFO] [stderr] 3 | V4(u8, u8, u8, u8), [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `V6` [INFO] [stderr] --> src/enums.rs:4:5 [INFO] [stderr] | [INFO] [stderr] 4 | V6(String), [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `call` [INFO] [stderr] --> src/enums.rs:8:8 [INFO] [stderr] | [INFO] [stderr] 8 | fn call(&self) { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `Point` [INFO] [stderr] --> src/generics.rs:7:8 [INFO] [stderr] | [INFO] [stderr] 7 | struct Point { [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `distance_from_origin` [INFO] [stderr] --> src/generics.rs:13:8 [INFO] [stderr] | [INFO] [stderr] 13 | fn distance_from_origin(&self) -> f32 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `notify` [INFO] [stderr] --> src/generics.rs:54:4 [INFO] [stderr] | [INFO] [stderr] 54 | fn notify(item: T) -> String { [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `some_function` [INFO] [stderr] --> src/generics.rs:58:4 [INFO] [stderr] | [INFO] [stderr] 58 | fn some_function(t: T, u: U) -> i32 [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `get_summarizable` [INFO] [stderr] --> src/generics.rs:66:4 [INFO] [stderr] | [INFO] [stderr] 66 | fn get_summarizable(switch: bool) -> impl Summary { [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `largest` [INFO] [stderr] --> src/generics.rs:91:4 [INFO] [stderr] | [INFO] [stderr] 91 | fn largest(list: &[T]) -> T { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `area` [INFO] [stderr] --> src/structs.rs:9:8 [INFO] [stderr] | [INFO] [stderr] 9 | fn area(&self) -> u32 { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `can_hold` [INFO] [stderr] --> src/structs.rs:13:8 [INFO] [stderr] | [INFO] [stderr] 13 | fn can_hold(&self, other: Rectangle) -> bool { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `square` [INFO] [stderr] --> src/structs.rs:17:8 [INFO] [stderr] | [INFO] [stderr] 17 | fn square(size: u32) -> Rectangle { [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never read: `x` [INFO] [stderr] --> src/lib.rs:17:5 [INFO] [stderr] | [INFO] [stderr] 17 | x: f64, [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never read: `y` [INFO] [stderr] --> src/lib.rs:18:5 [INFO] [stderr] | [INFO] [stderr] 18 | y: f64, [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: 23 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: unused variable: `t` [INFO] [stderr] --> src/generics.rs:58:24 [INFO] [stderr] | [INFO] [stderr] 58 | fn some_function(t: T, u: U) -> i32 [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `u` [INFO] [stderr] --> src/generics.rs:58:30 [INFO] [stderr] | [INFO] [stderr] 58 | fn some_function(t: T, u: U) -> i32 [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_u` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `switch` [INFO] [stderr] --> src/generics.rs:66:21 [INFO] [stderr] | [INFO] [stderr] 66 | fn get_summarizable(switch: bool) -> impl Summary { [INFO] [stderr] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_switch` [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `call` [INFO] [stderr] --> src/enums.rs:8:8 [INFO] [stderr] | [INFO] [stderr] 8 | fn call(&self) { [INFO] [stderr] | ^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `some_function` [INFO] [stderr] --> src/generics.rs:58:4 [INFO] [stderr] | [INFO] [stderr] 58 | fn some_function(t: T, u: U) -> i32 [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `get_summarizable` [INFO] [stderr] --> src/generics.rs:66:4 [INFO] [stderr] | [INFO] [stderr] 66 | fn get_summarizable(switch: bool) -> impl Summary { [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never read: `x` [INFO] [stderr] --> src/lib.rs:17:5 [INFO] [stderr] | [INFO] [stderr] 17 | x: f64, [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never read: `y` [INFO] [stderr] --> src/lib.rs:18:5 [INFO] [stderr] | [INFO] [stderr] 18 | y: f64, [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `test_V4` should have a snake case name [INFO] [stderr] --> src/enums.rs:14:4 [INFO] [stderr] | [INFO] [stderr] 14 | fn test_V4() { [INFO] [stderr] | ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `test_v4` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(non_snake_case)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function `test_V6` should have a snake case name [INFO] [stderr] --> src/enums.rs:24:4 [INFO] [stderr] | [INFO] [stderr] 24 | fn test_V6() { [INFO] [stderr] | ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `test_v6` [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:46:9 [INFO] [stderr] | [INFO] [stderr] 46 | channel.send(result); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: 11 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: 1 warning emitted [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 39.28s [INFO] running `"docker" "inspect" "cfb7ecdbfa5aa6e5830826c649e8a31fbb44eb9f0cbbaa74853c7e9161113082"` [INFO] running `"docker" "rm" "-f" "cfb7ecdbfa5aa6e5830826c649e8a31fbb44eb9f0cbbaa74853c7e9161113082"` [INFO] [stdout] cfb7ecdbfa5aa6e5830826c649e8a31fbb44eb9f0cbbaa74853c7e9161113082