[INFO] cloning repository https://github.com/Kyledmw/rust-web-thing [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Kyledmw/rust-web-thing" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKyledmw%2Frust-web-thing"` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKyledmw%2Frust-web-thing'... [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 7fbfdac95ad57df9b3a4e5fa61237a10216cd458 [INFO] testing Kyledmw/rust-web-thing against beta-2020-06-03 for beta-1.45-1 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKyledmw%2Frust-web-thing" "/workspace/builds/worker-9/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Kyledmw/rust-web-thing on toolchain beta-2020-06-03 [INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/Kyledmw/rust-web-thing [INFO] finished tweaking git repo https://github.com/Kyledmw/rust-web-thing [INFO] tweaked toml for git repo https://github.com/Kyledmw/rust-web-thing written to /workspace/builds/worker-9/source/Cargo.toml [INFO] crate git repo https://github.com/Kyledmw/rust-web-thing already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=warn" "-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" "+beta-2020-06-03" "build" "--frozen"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] c9ea17b3b6a38f93b83f37249b6f5b7e4a9f1e649a07edf661f23ba5b3bfab91 [INFO] running `"docker" "start" "-a" "c9ea17b3b6a38f93b83f37249b6f5b7e4a9f1e649a07edf661f23ba5b3bfab91"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] Compiling libc v0.2.43 [INFO] [stderr] Compiling rand v0.4.3 [INFO] [stderr] Compiling rand v0.3.22 [INFO] [stderr] Compiling rust-web-thing v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused variable: `word` [INFO] [stderr] --> src/main.rs:241:9 [INFO] [stderr] | [INFO] [stderr] 241 | let word = first_word(&s); [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_word` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `user3` [INFO] [stderr] --> src/main.rs:325:9 [INFO] [stderr] | [INFO] [stderr] 325 | let user3 = User { [INFO] [stderr] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_user3` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `user4` [INFO] [stderr] --> src/main.rs:334:9 [INFO] [stderr] | [INFO] [stderr] 334 | let user4 = User { [INFO] [stderr] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_user4` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `black` [INFO] [stderr] --> src/main.rs:365:9 [INFO] [stderr] | [INFO] [stderr] 365 | let black = Color(0, 0, 0); [INFO] [stderr] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_black` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `home` [INFO] [stderr] --> src/main.rs:435:9 [INFO] [stderr] | [INFO] [stderr] 435 | let home = IpAddrStruct { [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_home` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `loopback` [INFO] [stderr] --> src/main.rs:440:9 [INFO] [stderr] | [INFO] [stderr] 440 | let loopback = IpAddrStruct { [INFO] [stderr] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loopback` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `h` [INFO] [stderr] --> src/main.rs:445:9 [INFO] [stderr] | [INFO] [stderr] 445 | let h = IpAddrS::V4(String::from("127.0.0.1")); [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_h` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `lb` [INFO] [stderr] --> src/main.rs:446:9 [INFO] [stderr] | [INFO] [stderr] 446 | let lb = IpAddrS::V6(String::from("::1")); [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_lb` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `h2` [INFO] [stderr] --> src/main.rs:448:9 [INFO] [stderr] | [INFO] [stderr] 448 | let h2 = IpAddr::V4(127, 0, 0, 1); [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_h2` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `ip_type` [INFO] [stderr] --> src/main.rs:458:10 [INFO] [stderr] | [INFO] [stderr] 458 | fn route(ip_type: IpAddrKind) {} [INFO] [stderr] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ip_type` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `some_number` [INFO] [stderr] --> src/main.rs:489:9 [INFO] [stderr] | [INFO] [stderr] 489 | let some_number = Some(5); [INFO] [stderr] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_some_number` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `some_string` [INFO] [stderr] --> src/main.rs:490:9 [INFO] [stderr] | [INFO] [stderr] 490 | let some_string = Some("a string"); [INFO] [stderr] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_some_string` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `absent_number` [INFO] [stderr] --> src/main.rs:492:9 [INFO] [stderr] | [INFO] [stderr] 492 | let absent_number: Option = None; [INFO] [stderr] | ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_absent_number` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `sum` [INFO] [stderr] --> src/main.rs:499:9 [INFO] [stderr] | [INFO] [stderr] 499 | let sum = y.unwrap() + x; [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_sum` [INFO] [stderr] [INFO] [stderr] warning: constant is never used: `MAX_POINTS` [INFO] [stderr] --> src/main.rs:11:1 [INFO] [stderr] | [INFO] [stderr] 11 | const MAX_POINTS: u32 = 100_000; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `main_old` [INFO] [stderr] --> src/main.rs:14:4 [INFO] [stderr] | [INFO] [stderr] 14 | fn main_old() { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `another_function` [INFO] [stderr] --> src/main.rs:79:4 [INFO] [stderr] | [INFO] [stderr] 79 | fn another_function(a0: i32, a1: i32, a2: i32) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `five` [INFO] [stderr] --> src/main.rs:85:4 [INFO] [stderr] | [INFO] [stderr] 85 | fn five() -> i32 { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `plus_one` [INFO] [stderr] --> src/main.rs:89:4 [INFO] [stderr] | [INFO] [stderr] 89 | fn plus_one(x: i32) -> i32 { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `flow_control` [INFO] [stderr] --> src/main.rs:93:4 [INFO] [stderr] | [INFO] [stderr] 93 | fn flow_control() { [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `ownership` [INFO] [stderr] --> src/main.rs:146:4 [INFO] [stderr] | [INFO] [stderr] 146 | fn ownership() { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `takes_ownership` [INFO] [stderr] --> src/main.rs:171:4 [INFO] [stderr] | [INFO] [stderr] 171 | fn takes_ownership(some_string: String) { [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `makes_copy` [INFO] [stderr] --> src/main.rs:176:4 [INFO] [stderr] | [INFO] [stderr] 176 | fn makes_copy(some_integer: i32) { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `gives_ownership` [INFO] [stderr] --> src/main.rs:181:4 [INFO] [stderr] | [INFO] [stderr] 181 | fn gives_ownership() -> String { [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `takes_and_gives_back` [INFO] [stderr] --> src/main.rs:186:4 [INFO] [stderr] | [INFO] [stderr] 186 | fn takes_and_gives_back(a_string: String) -> String { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `calculate_length` [INFO] [stderr] --> src/main.rs:190:4 [INFO] [stderr] | [INFO] [stderr] 190 | fn calculate_length(s: String) -> (String, usize) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `references` [INFO] [stderr] --> src/main.rs:197:4 [INFO] [stderr] | [INFO] [stderr] 197 | fn references() { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `calculate_length_ref` [INFO] [stderr] --> src/main.rs:209:4 [INFO] [stderr] | [INFO] [stderr] 209 | fn calculate_length_ref(s: &String) -> usize { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `mut_references` [INFO] [stderr] --> src/main.rs:215:4 [INFO] [stderr] | [INFO] [stderr] 215 | fn mut_references() { [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `change` [INFO] [stderr] --> src/main.rs:222:4 [INFO] [stderr] | [INFO] [stderr] 222 | fn change(some_string: &mut String) { [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `no_dangle` [INFO] [stderr] --> src/main.rs:227:4 [INFO] [stderr] | [INFO] [stderr] 227 | fn no_dangle() -> String { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `word_runner` [INFO] [stderr] --> src/main.rs:238:4 [INFO] [stderr] | [INFO] [stderr] 238 | fn word_runner() { [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `first_word` [INFO] [stderr] --> src/main.rs:264:4 [INFO] [stderr] | [INFO] [stderr] 264 | fn first_word(s: &String) -> usize { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `first_word_slice` [INFO] [stderr] --> src/main.rs:277:4 [INFO] [stderr] | [INFO] [stderr] 277 | fn first_word_slice(s: &String) -> &str { //string slice written as &str [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `first_word_improved` [INFO] [stderr] --> src/main.rs:288:4 [INFO] [stderr] | [INFO] [stderr] 288 | fn first_word_improved(s: &str) -> &str { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `User` [INFO] [stderr] --> src/main.rs:299:8 [INFO] [stderr] | [INFO] [stderr] 299 | struct User { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `my_structs` [INFO] [stderr] --> src/main.rs:306:4 [INFO] [stderr] | [INFO] [stderr] 306 | fn my_structs() { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `build_user` [INFO] [stderr] --> src/main.rs:343:4 [INFO] [stderr] | [INFO] [stderr] 343 | fn build_user(email: String, username: String) -> User { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `test_build_user` [INFO] [stderr] --> src/main.rs:353:4 [INFO] [stderr] | [INFO] [stderr] 353 | fn test_build_user() { [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `Color` [INFO] [stderr] --> src/main.rs:362:8 [INFO] [stderr] | [INFO] [stderr] 362 | struct Color(i32, i32, i32); // structs without named fields. [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `test_tuple_structs` [INFO] [stderr] --> src/main.rs:364:4 [INFO] [stderr] | [INFO] [stderr] 364 | fn test_tuple_structs() { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `area` [INFO] [stderr] --> src/main.rs:378:8 [INFO] [stderr] | [INFO] [stderr] 378 | fn area(&self) -> u32 { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `square` [INFO] [stderr] --> src/main.rs:383:8 [INFO] [stderr] | [INFO] [stderr] 383 | fn square(size: u32) -> Rectangle { [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `main_old2` [INFO] [stderr] --> src/main.rs:388:4 [INFO] [stderr] | [INFO] [stderr] 388 | fn main_old2() { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `rectangle_examples` [INFO] [stderr] --> src/main.rs:392:4 [INFO] [stderr] | [INFO] [stderr] 392 | fn rectangle_examples() { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `testing_referencing` [INFO] [stderr] --> src/main.rs:407:4 [INFO] [stderr] | [INFO] [stderr] 407 | fn testing_referencing(rect: &Rectangle) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: enum is never used: `IpAddrKind` [INFO] [stderr] --> src/main.rs:411:6 [INFO] [stderr] | [INFO] [stderr] 411 | enum IpAddrKind { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `IpAddrStruct` [INFO] [stderr] --> src/main.rs:416:8 [INFO] [stderr] | [INFO] [stderr] 416 | struct IpAddrStruct { [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: enum is never used: `IpAddrS` [INFO] [stderr] --> src/main.rs:421:6 [INFO] [stderr] | [INFO] [stderr] 421 | enum IpAddrS { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: enum is never used: `IpAddr` [INFO] [stderr] --> src/main.rs:426:6 [INFO] [stderr] | [INFO] [stderr] 426 | enum IpAddr { [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `main_old3` [INFO] [stderr] --> src/main.rs:431:4 [INFO] [stderr] | [INFO] [stderr] 431 | fn main_old3() { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `route` [INFO] [stderr] --> src/main.rs:458:4 [INFO] [stderr] | [INFO] [stderr] 458 | fn route(ip_type: IpAddrKind) {} [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: enum is never used: `Message` [INFO] [stderr] --> src/main.rs:460:6 [INFO] [stderr] | [INFO] [stderr] 460 | enum Message { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `QuitMessage` [INFO] [stderr] --> src/main.rs:467:8 [INFO] [stderr] | [INFO] [stderr] 467 | struct QuitMessage; // unit struct [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `MoveMessage` [INFO] [stderr] --> src/main.rs:468:8 [INFO] [stderr] | [INFO] [stderr] 468 | struct MoveMessage { [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `WriteMessage` [INFO] [stderr] --> src/main.rs:473:8 [INFO] [stderr] | [INFO] [stderr] 473 | struct WriteMessage(String); [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `ChangeColorMessage` [INFO] [stderr] --> src/main.rs:474:8 [INFO] [stderr] | [INFO] [stderr] 474 | struct ChangeColorMessage(i32, i32, i32); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `call` [INFO] [stderr] --> src/main.rs:477:8 [INFO] [stderr] | [INFO] [stderr] 477 | fn call(&self) { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `enum_stuff` [INFO] [stderr] --> src/main.rs:482:4 [INFO] [stderr] | [INFO] [stderr] 482 | fn enum_stuff() { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `optional_enum` [INFO] [stderr] --> src/main.rs:488:4 [INFO] [stderr] | [INFO] [stderr] 488 | fn optional_enum() { [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Alabama` [INFO] [stderr] --> src/main.rs:506:5 [INFO] [stderr] | [INFO] [stderr] 506 | Alabama, [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Alaska` [INFO] [stderr] --> src/main.rs:507:5 [INFO] [stderr] | [INFO] [stderr] 507 | Alaska [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: enum is never used: `Coin` [INFO] [stderr] --> src/main.rs:510:6 [INFO] [stderr] | [INFO] [stderr] 510 | enum Coin { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `value_in_cents` [INFO] [stderr] --> src/main.rs:517:4 [INFO] [stderr] | [INFO] [stderr] 517 | fn value_in_cents(coin: Coin) -> u32 { [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: 64 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 3.85s [INFO] running `"docker" "inspect" "c9ea17b3b6a38f93b83f37249b6f5b7e4a9f1e649a07edf661f23ba5b3bfab91"` [INFO] running `"docker" "rm" "-f" "c9ea17b3b6a38f93b83f37249b6f5b7e4a9f1e649a07edf661f23ba5b3bfab91"` [INFO] [stdout] c9ea17b3b6a38f93b83f37249b6f5b7e4a9f1e649a07edf661f23ba5b3bfab91 [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=warn" "-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" "+beta-2020-06-03" "test" "--frozen" "--no-run"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] a180f4ed1701c74c9f179ae829b332c4d8a4fd8d82567a6ad86ecefde2203c4a [INFO] running `"docker" "start" "-a" "a180f4ed1701c74c9f179ae829b332c4d8a4fd8d82567a6ad86ecefde2203c4a"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] Compiling rust-web-thing v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused variable: `word` [INFO] [stderr] --> src/main.rs:241:9 [INFO] [stderr] | [INFO] [stderr] 241 | let word = first_word(&s); [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_word` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `user3` [INFO] [stderr] --> src/main.rs:325:9 [INFO] [stderr] | [INFO] [stderr] 325 | let user3 = User { [INFO] [stderr] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_user3` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `user4` [INFO] [stderr] --> src/main.rs:334:9 [INFO] [stderr] | [INFO] [stderr] 334 | let user4 = User { [INFO] [stderr] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_user4` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `black` [INFO] [stderr] --> src/main.rs:365:9 [INFO] [stderr] | [INFO] [stderr] 365 | let black = Color(0, 0, 0); [INFO] [stderr] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_black` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `home` [INFO] [stderr] --> src/main.rs:435:9 [INFO] [stderr] | [INFO] [stderr] 435 | let home = IpAddrStruct { [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_home` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `loopback` [INFO] [stderr] --> src/main.rs:440:9 [INFO] [stderr] | [INFO] [stderr] 440 | let loopback = IpAddrStruct { [INFO] [stderr] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loopback` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `h` [INFO] [stderr] --> src/main.rs:445:9 [INFO] [stderr] | [INFO] [stderr] 445 | let h = IpAddrS::V4(String::from("127.0.0.1")); [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_h` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `lb` [INFO] [stderr] --> src/main.rs:446:9 [INFO] [stderr] | [INFO] [stderr] 446 | let lb = IpAddrS::V6(String::from("::1")); [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_lb` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `h2` [INFO] [stderr] --> src/main.rs:448:9 [INFO] [stderr] | [INFO] [stderr] 448 | let h2 = IpAddr::V4(127, 0, 0, 1); [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_h2` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `ip_type` [INFO] [stderr] --> src/main.rs:458:10 [INFO] [stderr] | [INFO] [stderr] 458 | fn route(ip_type: IpAddrKind) {} [INFO] [stderr] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ip_type` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `some_number` [INFO] [stderr] --> src/main.rs:489:9 [INFO] [stderr] | [INFO] [stderr] 489 | let some_number = Some(5); [INFO] [stderr] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_some_number` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `some_string` [INFO] [stderr] --> src/main.rs:490:9 [INFO] [stderr] | [INFO] [stderr] 490 | let some_string = Some("a string"); [INFO] [stderr] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_some_string` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `absent_number` [INFO] [stderr] --> src/main.rs:492:9 [INFO] [stderr] | [INFO] [stderr] 492 | let absent_number: Option = None; [INFO] [stderr] | ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_absent_number` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `sum` [INFO] [stderr] --> src/main.rs:499:9 [INFO] [stderr] | [INFO] [stderr] 499 | let sum = y.unwrap() + x; [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_sum` [INFO] [stderr] [INFO] [stderr] warning: constant is never used: `MAX_POINTS` [INFO] [stderr] --> src/main.rs:11:1 [INFO] [stderr] | [INFO] [stderr] 11 | const MAX_POINTS: u32 = 100_000; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `main_old` [INFO] [stderr] --> src/main.rs:14:4 [INFO] [stderr] | [INFO] [stderr] 14 | fn main_old() { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `another_function` [INFO] [stderr] --> src/main.rs:79:4 [INFO] [stderr] | [INFO] [stderr] 79 | fn another_function(a0: i32, a1: i32, a2: i32) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `five` [INFO] [stderr] --> src/main.rs:85:4 [INFO] [stderr] | [INFO] [stderr] 85 | fn five() -> i32 { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `plus_one` [INFO] [stderr] --> src/main.rs:89:4 [INFO] [stderr] | [INFO] [stderr] 89 | fn plus_one(x: i32) -> i32 { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `flow_control` [INFO] [stderr] --> src/main.rs:93:4 [INFO] [stderr] | [INFO] [stderr] 93 | fn flow_control() { [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `ownership` [INFO] [stderr] --> src/main.rs:146:4 [INFO] [stderr] | [INFO] [stderr] 146 | fn ownership() { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `takes_ownership` [INFO] [stderr] --> src/main.rs:171:4 [INFO] [stderr] | [INFO] [stderr] 171 | fn takes_ownership(some_string: String) { [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `makes_copy` [INFO] [stderr] --> src/main.rs:176:4 [INFO] [stderr] | [INFO] [stderr] 176 | fn makes_copy(some_integer: i32) { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `gives_ownership` [INFO] [stderr] --> src/main.rs:181:4 [INFO] [stderr] | [INFO] [stderr] 181 | fn gives_ownership() -> String { [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `takes_and_gives_back` [INFO] [stderr] --> src/main.rs:186:4 [INFO] [stderr] | [INFO] [stderr] 186 | fn takes_and_gives_back(a_string: String) -> String { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `calculate_length` [INFO] [stderr] --> src/main.rs:190:4 [INFO] [stderr] | [INFO] [stderr] 190 | fn calculate_length(s: String) -> (String, usize) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `references` [INFO] [stderr] --> src/main.rs:197:4 [INFO] [stderr] | [INFO] [stderr] 197 | fn references() { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `calculate_length_ref` [INFO] [stderr] --> src/main.rs:209:4 [INFO] [stderr] | [INFO] [stderr] 209 | fn calculate_length_ref(s: &String) -> usize { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `mut_references` [INFO] [stderr] --> src/main.rs:215:4 [INFO] [stderr] | [INFO] [stderr] 215 | fn mut_references() { [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `change` [INFO] [stderr] --> src/main.rs:222:4 [INFO] [stderr] | [INFO] [stderr] 222 | fn change(some_string: &mut String) { [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `no_dangle` [INFO] [stderr] --> src/main.rs:227:4 [INFO] [stderr] | [INFO] [stderr] 227 | fn no_dangle() -> String { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `word_runner` [INFO] [stderr] --> src/main.rs:238:4 [INFO] [stderr] | [INFO] [stderr] 238 | fn word_runner() { [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `first_word` [INFO] [stderr] --> src/main.rs:264:4 [INFO] [stderr] | [INFO] [stderr] 264 | fn first_word(s: &String) -> usize { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `first_word_slice` [INFO] [stderr] --> src/main.rs:277:4 [INFO] [stderr] | [INFO] [stderr] 277 | fn first_word_slice(s: &String) -> &str { //string slice written as &str [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `first_word_improved` [INFO] [stderr] --> src/main.rs:288:4 [INFO] [stderr] | [INFO] [stderr] 288 | fn first_word_improved(s: &str) -> &str { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `User` [INFO] [stderr] --> src/main.rs:299:8 [INFO] [stderr] | [INFO] [stderr] 299 | struct User { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `my_structs` [INFO] [stderr] --> src/main.rs:306:4 [INFO] [stderr] | [INFO] [stderr] 306 | fn my_structs() { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `build_user` [INFO] [stderr] --> src/main.rs:343:4 [INFO] [stderr] | [INFO] [stderr] 343 | fn build_user(email: String, username: String) -> User { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `test_build_user` [INFO] [stderr] --> src/main.rs:353:4 [INFO] [stderr] | [INFO] [stderr] 353 | fn test_build_user() { [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `Color` [INFO] [stderr] --> src/main.rs:362:8 [INFO] [stderr] | [INFO] [stderr] 362 | struct Color(i32, i32, i32); // structs without named fields. [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `test_tuple_structs` [INFO] [stderr] --> src/main.rs:364:4 [INFO] [stderr] | [INFO] [stderr] 364 | fn test_tuple_structs() { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `area` [INFO] [stderr] --> src/main.rs:378:8 [INFO] [stderr] | [INFO] [stderr] 378 | fn area(&self) -> u32 { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `square` [INFO] [stderr] --> src/main.rs:383:8 [INFO] [stderr] | [INFO] [stderr] 383 | fn square(size: u32) -> Rectangle { [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `main_old2` [INFO] [stderr] --> src/main.rs:388:4 [INFO] [stderr] | [INFO] [stderr] 388 | fn main_old2() { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `rectangle_examples` [INFO] [stderr] --> src/main.rs:392:4 [INFO] [stderr] | [INFO] [stderr] 392 | fn rectangle_examples() { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `testing_referencing` [INFO] [stderr] --> src/main.rs:407:4 [INFO] [stderr] | [INFO] [stderr] 407 | fn testing_referencing(rect: &Rectangle) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: enum is never used: `IpAddrKind` [INFO] [stderr] --> src/main.rs:411:6 [INFO] [stderr] | [INFO] [stderr] 411 | enum IpAddrKind { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `IpAddrStruct` [INFO] [stderr] --> src/main.rs:416:8 [INFO] [stderr] | [INFO] [stderr] 416 | struct IpAddrStruct { [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: enum is never used: `IpAddrS` [INFO] [stderr] --> src/main.rs:421:6 [INFO] [stderr] | [INFO] [stderr] 421 | enum IpAddrS { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: enum is never used: `IpAddr` [INFO] [stderr] --> src/main.rs:426:6 [INFO] [stderr] | [INFO] [stderr] 426 | enum IpAddr { [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `main_old3` [INFO] [stderr] --> src/main.rs:431:4 [INFO] [stderr] | [INFO] [stderr] 431 | fn main_old3() { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `route` [INFO] [stderr] --> src/main.rs:458:4 [INFO] [stderr] | [INFO] [stderr] 458 | fn route(ip_type: IpAddrKind) {} [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: enum is never used: `Message` [INFO] [stderr] --> src/main.rs:460:6 [INFO] [stderr] | [INFO] [stderr] 460 | enum Message { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `QuitMessage` [INFO] [stderr] --> src/main.rs:467:8 [INFO] [stderr] | [INFO] [stderr] 467 | struct QuitMessage; // unit struct [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `MoveMessage` [INFO] [stderr] --> src/main.rs:468:8 [INFO] [stderr] | [INFO] [stderr] 468 | struct MoveMessage { [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `WriteMessage` [INFO] [stderr] --> src/main.rs:473:8 [INFO] [stderr] | [INFO] [stderr] 473 | struct WriteMessage(String); [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `ChangeColorMessage` [INFO] [stderr] --> src/main.rs:474:8 [INFO] [stderr] | [INFO] [stderr] 474 | struct ChangeColorMessage(i32, i32, i32); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `call` [INFO] [stderr] --> src/main.rs:477:8 [INFO] [stderr] | [INFO] [stderr] 477 | fn call(&self) { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `enum_stuff` [INFO] [stderr] --> src/main.rs:482:4 [INFO] [stderr] | [INFO] [stderr] 482 | fn enum_stuff() { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `optional_enum` [INFO] [stderr] --> src/main.rs:488:4 [INFO] [stderr] | [INFO] [stderr] 488 | fn optional_enum() { [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Alabama` [INFO] [stderr] --> src/main.rs:506:5 [INFO] [stderr] | [INFO] [stderr] 506 | Alabama, [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Alaska` [INFO] [stderr] --> src/main.rs:507:5 [INFO] [stderr] | [INFO] [stderr] 507 | Alaska [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: enum is never used: `Coin` [INFO] [stderr] --> src/main.rs:510:6 [INFO] [stderr] | [INFO] [stderr] 510 | enum Coin { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `value_in_cents` [INFO] [stderr] --> src/main.rs:517:4 [INFO] [stderr] | [INFO] [stderr] 517 | fn value_in_cents(coin: Coin) -> u32 { [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: 64 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.75s [INFO] running `"docker" "inspect" "a180f4ed1701c74c9f179ae829b332c4d8a4fd8d82567a6ad86ecefde2203c4a"` [INFO] running `"docker" "rm" "-f" "a180f4ed1701c74c9f179ae829b332c4d8a4fd8d82567a6ad86ecefde2203c4a"` [INFO] [stdout] a180f4ed1701c74c9f179ae829b332c4d8a4fd8d82567a6ad86ecefde2203c4a [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=warn" "-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" "+beta-2020-06-03" "test" "--frozen"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 7a98df495a481d4637b6baec5c0d052b4c220dfb0ee244bc611d054d391a61da [INFO] running `"docker" "start" "-a" "7a98df495a481d4637b6baec5c0d052b4c220dfb0ee244bc611d054d391a61da"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] warning: unused variable: `word` [INFO] [stderr] --> src/main.rs:241:9 [INFO] [stderr] | [INFO] [stderr] 241 | let word = first_word(&s); [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_word` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `user3` [INFO] [stderr] --> src/main.rs:325:9 [INFO] [stderr] | [INFO] [stderr] 325 | let user3 = User { [INFO] [stderr] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_user3` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `user4` [INFO] [stderr] --> src/main.rs:334:9 [INFO] [stderr] | [INFO] [stderr] 334 | let user4 = User { [INFO] [stderr] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_user4` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `black` [INFO] [stderr] --> src/main.rs:365:9 [INFO] [stderr] | [INFO] [stderr] 365 | let black = Color(0, 0, 0); [INFO] [stderr] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_black` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `home` [INFO] [stderr] --> src/main.rs:435:9 [INFO] [stderr] | [INFO] [stderr] 435 | let home = IpAddrStruct { [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_home` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `loopback` [INFO] [stderr] --> src/main.rs:440:9 [INFO] [stderr] | [INFO] [stderr] 440 | let loopback = IpAddrStruct { [INFO] [stderr] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loopback` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `h` [INFO] [stderr] --> src/main.rs:445:9 [INFO] [stderr] | [INFO] [stderr] 445 | let h = IpAddrS::V4(String::from("127.0.0.1")); [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_h` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `lb` [INFO] [stderr] --> src/main.rs:446:9 [INFO] [stderr] | [INFO] [stderr] 446 | let lb = IpAddrS::V6(String::from("::1")); [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_lb` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `h2` [INFO] [stderr] --> src/main.rs:448:9 [INFO] [stderr] | [INFO] [stderr] 448 | let h2 = IpAddr::V4(127, 0, 0, 1); [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_h2` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `ip_type` [INFO] [stderr] --> src/main.rs:458:10 [INFO] [stderr] | [INFO] [stderr] 458 | fn route(ip_type: IpAddrKind) {} [INFO] [stderr] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ip_type` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `some_number` [INFO] [stderr] --> src/main.rs:489:9 [INFO] [stderr] | [INFO] [stderr] 489 | let some_number = Some(5); [INFO] [stderr] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_some_number` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `some_string` [INFO] [stderr] --> src/main.rs:490:9 [INFO] [stderr] | [INFO] [stderr] 490 | let some_string = Some("a string"); [INFO] [stderr] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_some_string` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `absent_number` [INFO] [stderr] --> src/main.rs:492:9 [INFO] [stderr] | [INFO] [stderr] 492 | let absent_number: Option = None; [INFO] [stderr] | ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_absent_number` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `sum` [INFO] [stderr] --> src/main.rs:499:9 [INFO] [stderr] | [INFO] [stderr] 499 | let sum = y.unwrap() + x; [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_sum` [INFO] [stderr] [INFO] [stderr] warning: constant is never used: `MAX_POINTS` [INFO] [stderr] --> src/main.rs:11:1 [INFO] [stderr] | [INFO] [stderr] 11 | const MAX_POINTS: u32 = 100_000; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `main_old` [INFO] [stderr] --> src/main.rs:14:4 [INFO] [stderr] | [INFO] [stderr] 14 | fn main_old() { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `another_function` [INFO] [stderr] --> src/main.rs:79:4 [INFO] [stderr] | [INFO] [stderr] 79 | fn another_function(a0: i32, a1: i32, a2: i32) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `five` [INFO] [stderr] --> src/main.rs:85:4 [INFO] [stderr] | [INFO] [stderr] 85 | fn five() -> i32 { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `plus_one` [INFO] [stderr] --> src/main.rs:89:4 [INFO] [stderr] | [INFO] [stderr] 89 | fn plus_one(x: i32) -> i32 { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `flow_control` [INFO] [stderr] --> src/main.rs:93:4 [INFO] [stderr] | [INFO] [stderr] 93 | fn flow_control() { [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `ownership` [INFO] [stderr] --> src/main.rs:146:4 [INFO] [stderr] | [INFO] [stderr] 146 | fn ownership() { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `takes_ownership` [INFO] [stderr] --> src/main.rs:171:4 [INFO] [stderr] | [INFO] [stderr] 171 | fn takes_ownership(some_string: String) { [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `makes_copy` [INFO] [stderr] --> src/main.rs:176:4 [INFO] [stderr] | [INFO] [stderr] 176 | fn makes_copy(some_integer: i32) { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `gives_ownership` [INFO] [stderr] --> src/main.rs:181:4 [INFO] [stderr] | [INFO] [stderr] 181 | fn gives_ownership() -> String { [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `takes_and_gives_back` [INFO] [stderr] --> src/main.rs:186:4 [INFO] [stderr] | [INFO] [stderr] 186 | fn takes_and_gives_back(a_string: String) -> String { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `calculate_length` [INFO] [stderr] --> src/main.rs:190:4 [INFO] [stderr] | [INFO] [stderr] 190 | fn calculate_length(s: String) -> (String, usize) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `references` [INFO] [stderr] --> src/main.rs:197:4 [INFO] [stderr] | [INFO] [stderr] 197 | fn references() { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `calculate_length_ref` [INFO] [stderr] --> src/main.rs:209:4 [INFO] [stderr] | [INFO] [stderr] 209 | fn calculate_length_ref(s: &String) -> usize { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `mut_references` [INFO] [stderr] --> src/main.rs:215:4 [INFO] [stderr] | [INFO] [stderr] 215 | fn mut_references() { [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `change` [INFO] [stderr] --> src/main.rs:222:4 [INFO] [stderr] | [INFO] [stderr] 222 | fn change(some_string: &mut String) { [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `no_dangle` [INFO] [stderr] --> src/main.rs:227:4 [INFO] [stderr] | [INFO] [stderr] 227 | fn no_dangle() -> String { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `word_runner` [INFO] [stderr] --> src/main.rs:238:4 [INFO] [stderr] | [INFO] [stderr] 238 | fn word_runner() { [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `first_word` [INFO] [stderr] --> src/main.rs:264:4 [INFO] [stderr] | [INFO] [stderr] 264 | fn first_word(s: &String) -> usize { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `first_word_slice` [INFO] [stderr] --> src/main.rs:277:4 [INFO] [stderr] | [INFO] [stderr] 277 | fn first_word_slice(s: &String) -> &str { //string slice written as &str [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `first_word_improved` [INFO] [stderr] --> src/main.rs:288:4 [INFO] [stderr] | [INFO] [stderr] 288 | fn first_word_improved(s: &str) -> &str { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `User` [INFO] [stderr] --> src/main.rs:299:8 [INFO] [stderr] | [INFO] [stderr] 299 | struct User { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `my_structs` [INFO] [stderr] --> src/main.rs:306:4 [INFO] [stderr] | [INFO] [stderr] 306 | fn my_structs() { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `build_user` [INFO] [stderr] --> src/main.rs:343:4 [INFO] [stderr] | [INFO] [stderr] 343 | fn build_user(email: String, username: String) -> User { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `test_build_user` [INFO] [stderr] --> src/main.rs:353:4 [INFO] [stderr] | [INFO] [stderr] 353 | fn test_build_user() { [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `Color` [INFO] [stderr] --> src/main.rs:362:8 [INFO] [stderr] | [INFO] [stderr] 362 | struct Color(i32, i32, i32); // structs without named fields. [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `test_tuple_structs` [INFO] [stderr] --> src/main.rs:364:4 [INFO] [stderr] | [INFO] [stderr] 364 | fn test_tuple_structs() { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `area` [INFO] [stderr] --> src/main.rs:378:8 [INFO] [stderr] | [INFO] [stderr] 378 | fn area(&self) -> u32 { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `square` [INFO] [stderr] --> src/main.rs:383:8 [INFO] [stderr] | [INFO] [stderr] 383 | fn square(size: u32) -> Rectangle { [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `main_old2` [INFO] [stderr] --> src/main.rs:388:4 [INFO] [stderr] | [INFO] [stderr] 388 | fn main_old2() { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `rectangle_examples` [INFO] [stderr] --> src/main.rs:392:4 [INFO] [stderr] | [INFO] [stderr] 392 | fn rectangle_examples() { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `testing_referencing` [INFO] [stderr] --> src/main.rs:407:4 [INFO] [stderr] | [INFO] [stderr] 407 | fn testing_referencing(rect: &Rectangle) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: enum is never used: `IpAddrKind` [INFO] [stderr] --> src/main.rs:411:6 [INFO] [stderr] | [INFO] [stderr] 411 | enum IpAddrKind { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `IpAddrStruct` [INFO] [stderr] --> src/main.rs:416:8 [INFO] [stderr] | [INFO] [stderr] 416 | struct IpAddrStruct { [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: enum is never used: `IpAddrS` [INFO] [stderr] --> src/main.rs:421:6 [INFO] [stderr] | [INFO] [stderr] 421 | enum IpAddrS { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: enum is never used: `IpAddr` [INFO] [stderr] --> src/main.rs:426:6 [INFO] [stderr] | [INFO] [stderr] 426 | enum IpAddr { [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `main_old3` [INFO] [stderr] --> src/main.rs:431:4 [INFO] [stderr] | [INFO] [stderr] 431 | fn main_old3() { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `route` [INFO] [stderr] --> src/main.rs:458:4 [INFO] [stderr] | [INFO] [stderr] 458 | fn route(ip_type: IpAddrKind) {} [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: enum is never used: `Message` [INFO] [stderr] --> src/main.rs:460:6 [INFO] [stderr] | [INFO] [stderr] 460 | enum Message { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `QuitMessage` [INFO] [stderr] --> src/main.rs:467:8 [INFO] [stderr] | [INFO] [stderr] 467 | struct QuitMessage; // unit struct [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `MoveMessage` [INFO] [stderr] --> src/main.rs:468:8 [INFO] [stderr] | [INFO] [stderr] 468 | struct MoveMessage { [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `WriteMessage` [INFO] [stderr] --> src/main.rs:473:8 [INFO] [stderr] | [INFO] [stderr] 473 | struct WriteMessage(String); [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `ChangeColorMessage` [INFO] [stderr] --> src/main.rs:474:8 [INFO] [stderr] | [INFO] [stderr] 474 | struct ChangeColorMessage(i32, i32, i32); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `call` [INFO] [stderr] --> src/main.rs:477:8 [INFO] [stderr] | [INFO] [stderr] 477 | fn call(&self) { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `enum_stuff` [INFO] [stderr] --> src/main.rs:482:4 [INFO] [stderr] | [INFO] [stderr] 482 | fn enum_stuff() { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `optional_enum` [INFO] [stderr] --> src/main.rs:488:4 [INFO] [stderr] | [INFO] [stderr] 488 | fn optional_enum() { [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Alabama` [INFO] [stderr] --> src/main.rs:506:5 [INFO] [stderr] | [INFO] [stderr] 506 | Alabama, [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Alaska` [INFO] [stderr] --> src/main.rs:507:5 [INFO] [stderr] | [INFO] [stderr] 507 | Alaska [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: enum is never used: `Coin` [INFO] [stderr] --> src/main.rs:510:6 [INFO] [stderr] | [INFO] [stderr] 510 | enum Coin { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `value_in_cents` [INFO] [stderr] --> src/main.rs:517:4 [INFO] [stderr] | [INFO] [stderr] 517 | fn value_in_cents(coin: Coin) -> u32 { [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: 64 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.04s [INFO] [stderr] Running /opt/rustwide/target/debug/deps/rust_web_thing-d913488d3cc1aa93 [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] running `"docker" "inspect" "7a98df495a481d4637b6baec5c0d052b4c220dfb0ee244bc611d054d391a61da"` [INFO] running `"docker" "rm" "-f" "7a98df495a481d4637b6baec5c0d052b4c220dfb0ee244bc611d054d391a61da"` [INFO] [stdout] 7a98df495a481d4637b6baec5c0d052b4c220dfb0ee244bc611d054d391a61da