[INFO] cloning repository https://github.com/Jim124/playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Jim124/playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJim124%2Fplayground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJim124%2Fplayground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0772d60b8b5d3b8f57abca80da87e7f070cd7b20
[INFO] checking Jim124/playground against master#779e19d8baa3e3625bd4fc5c85cbb2ad47b43155 for pr-147589-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJim124%2Fplayground" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Jim124/playground
[INFO] finished tweaking git repo https://github.com/Jim124/playground
[INFO] tweaked toml for git repo https://github.com/Jim124/playground written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Jim124/playground on toolchain 779e19d8baa3e3625bd4fc5c85cbb2ad47b43155
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+779e19d8baa3e3625bd4fc5c85cbb2ad47b43155" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Jim124/playground 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" "+779e19d8baa3e3625bd4fc5c85cbb2ad47b43155" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded security-framework-sys v2.13.0
[INFO] [stderr]   Downloaded rustls v0.23.20
[INFO] [stderr]   Downloaded petgraph v0.6.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+779e19d8baa3e3625bd4fc5c85cbb2ad47b43155" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 016d439119702fdd3a5b42fb1deffef2b3df9cadb946f9b600f93708bef08ff0
[INFO] running `Command { std: "docker" "start" "-a" "016d439119702fdd3a5b42fb1deffef2b3df9cadb946f9b600f93708bef08ff0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "016d439119702fdd3a5b42fb1deffef2b3df9cadb946f9b600f93708bef08ff0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "016d439119702fdd3a5b42fb1deffef2b3df9cadb946f9b600f93708bef08ff0", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+779e19d8baa3e3625bd4fc5c85cbb2ad47b43155" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] [stdout] warning: enum `CarColor` is never used
[INFO] [stdout]  --> src/m1_enums.rs:2:6
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum CarColor {
[INFO] [stdout]   |      ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_car_color_blue` is never used
[INFO] [stdout]  --> src/m1_enums.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn create_car_color_blue() -> CarColor {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `check_result_built_in` is never used
[INFO] [stdout]   --> src/m1_enums.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn check_result_built_in(num: u8) -> Result<u8, String> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reminder_option_built_in` is never used
[INFO] [stdout]   --> src/m1_enums.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn reminder_option_built_in(num: f32) -> Option<f32> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `User` is never constructed
[INFO] [stdout]  --> src/m2_structs.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct User {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `increment_sign_in_account` and `change_email` are never used
[INFO] [stdout]   --> src/m2_structs.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl User {
[INFO] [stdout]    | --------- methods in this implementation
[INFO] [stdout] 10 |     fn increment_sign_in_account(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 13 |     fn change_email(&mut self, new_email: &str) {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Attacker` is never used
[INFO] [stdout]  --> src/m3_traits.rs:1:7
[INFO] [stdout]   |
[INFO] [stdout] 1 | trait Attacker {
[INFO] [stdout]   |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Character` is never used
[INFO] [stdout]  --> src/m3_traits.rs:5:6
[INFO] [stdout]   |
[INFO] [stdout] 5 | enum Character {
[INFO] [stdout]   |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `EthereumAddress` is never used
[INFO] [stdout]  --> src/m4_polymorphism.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 4 | trait EthereumAddress {
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_ethereum_date` is never used
[INFO] [stdout]   --> src/m4_polymorphism.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn get_ethereum_date<T: EthereumAddress>(address: T) -> Address {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Message` is never used
[INFO] [stdout]  --> src/m6_matches.rs:2:6
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum Message {
[INFO] [stdout]   |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `process_message` is never used
[INFO] [stdout]  --> src/m6_matches.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn process_message(message: Message) {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `my_async_call` is never used
[INFO] [stdout]  --> src/m7_async.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | async fn my_async_call(url: &str) -> Result<serde_json::Value, reqwest::Error> {
[INFO] [stdout]   |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `async_call` is never used
[INFO] [stdout]  --> src/m8_handle_error.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | async fn async_call(url: &str) -> Result<serde_json::Value, Error> {
[INFO] [stdout]   |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `prob_none`
[INFO] [stdout]   --> src/m6_matches.rs:42:13
[INFO] [stdout]    |
[INFO] [stdout] 42 |         let prob_none: Option<i32> = None;
[INFO] [stdout]    |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_prob_none`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `some_err`
[INFO] [stdout]   --> src/m6_matches.rs:67:13
[INFO] [stdout]    |
[INFO] [stdout] 67 |         let some_err: Result<i32, &str> = Err("There was en err");
[INFO] [stdout]    |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_some_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/m6_matches.rs:113:24
[INFO] [stdout]     |
[INFO] [stdout] 113 |             Location { x, y: 0 } => println!("Y is on the axis"),
[INFO] [stdout]     |                        ^ help: try ignoring the field: `x: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/m6_matches.rs:114:30
[INFO] [stdout]     |
[INFO] [stdout] 114 |             Location { x: 0, y } => println!("X is on the axis"),
[INFO] [stdout]     |                              ^ help: try ignoring the field: `y: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/m6_matches.rs:115:24
[INFO] [stdout]     |
[INFO] [stdout] 115 |             Location { x, y } => println!("x and y are not on the axis"),
[INFO] [stdout]     |                        ^ help: try ignoring the field: `x: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/m6_matches.rs:115:27
[INFO] [stdout]     |
[INFO] [stdout] 115 |             Location { x, y } => println!("x and y are not on the axis"),
[INFO] [stdout]     |                           ^ help: try ignoring the field: `y: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Red`, `Green`, and `Silver` are never constructed
[INFO] [stdout]  --> src/m1_enums.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum CarColor {
[INFO] [stdout]   |      -------- variants in this enum
[INFO] [stdout] 3 |     Red,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 4 |     Blue,
[INFO] [stdout] 5 |     Green,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 6 |     Silver,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `CarColor` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `username` and `active` are never read
[INFO] [stdout]  --> src/m2_structs.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct User {
[INFO] [stdout]   |        ---- fields in this struct
[INFO] [stdout] 3 |     username: String,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 6 |     active: bool,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `User` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Warrior` and `Wizard` are never constructed
[INFO] [stdout]  --> src/m3_traits.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | enum Character {
[INFO] [stdout]   |      --------- variants in this enum
[INFO] [stdout] 6 |     Warrior,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 7 |     Archer,
[INFO] [stdout] 8 |     Wizard,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `EthereumAddress` is never used
[INFO] [stdout]  --> src/m4_polymorphism.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 4 | trait EthereumAddress {
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_ethereum_date` is never used
[INFO] [stdout]   --> src/m4_polymorphism.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn get_ethereum_date<T: EthereumAddress>(address: T) -> Address {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3m 34s
[INFO] running `Command { std: "docker" "inspect" "d5c6b471bca08d19328d91c725f45c8fb4bd0753673a1982792079ab59224a70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5c6b471bca08d19328d91c725f45c8fb4bd0753673a1982792079ab59224a70", kill_on_drop: false }`
[INFO] [stdout] d5c6b471bca08d19328d91c725f45c8fb4bd0753673a1982792079ab59224a70
