[INFO] cloning repository https://github.com/timothyjulian/rust-refresh
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/timothyjulian/rust-refresh" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftimothyjulian%2Frust-refresh", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftimothyjulian%2Frust-refresh'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 835612699581ddad691e2f31c6f1a6f470fb1803
[INFO] building timothyjulian/rust-refresh against try#8b8eff55bd72abbb57167bc42222a7f91d41cb0d for pr-142134-abi-ast-error
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftimothyjulian%2Frust-refresh" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/timothyjulian/rust-refresh on toolchain 8b8eff55bd72abbb57167bc42222a7f91d41cb0d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/timothyjulian/rust-refresh
[INFO] finished tweaking git repo https://github.com/timothyjulian/rust-refresh
[INFO] tweaked toml for git repo https://github.com/timothyjulian/rust-refresh written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/timothyjulian/rust-refresh 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" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7ca105b78b65aaa2111769eda422b345149f87d927d48d231f7b6f7bef4bf690
[INFO] running `Command { std: "docker" "start" "-a" "7ca105b78b65aaa2111769eda422b345149f87d927d48d231f7b6f7bef4bf690", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7ca105b78b65aaa2111769eda422b345149f87d927d48d231f7b6f7bef4bf690", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ca105b78b65aaa2111769eda422b345149f87d927d48d231f7b6f7bef4bf690", kill_on_drop: false }`
[INFO] [stdout] 7ca105b78b65aaa2111769eda422b345149f87d927d48d231f7b6f7bef4bf690
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8206f4e62b3f8307b2c9c18669b74a444b432b87c1063edbdc0f7683321b9c32
[INFO] running `Command { std: "docker" "start" "-a" "8206f4e62b3f8307b2c9c18669b74a444b432b87c1063edbdc0f7683321b9c32", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-refresh v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::struct_type::GeoPoint`
[INFO] [stdout]  --> src/enumer.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::struct_type::GeoPoint;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::struct_type::Person`
[INFO] [stdout]  --> src/enumer.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::struct_type::Person;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SimplePerson`
[INFO] [stdout]  --> src/generic.rs:1:36
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::traits::{CanSayGoodbye, SimplePerson};
[INFO] [stdout]   |                                    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BTreeMap` and `HashMap`
[INFO] [stdout]  --> src/maps.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{BTreeMap, HashMap};
[INFO] [stdout]   |                        ^^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `LinkedList` and `VecDeque`
[INFO] [stdout]  --> src/sequences.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{LinkedList, VecDeque};
[INFO] [stdout]   |                        ^^^^^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BTreeSet` and `HashSet`
[INFO] [stdout]  --> src/sets.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{BTreeSet, HashSet};
[INFO] [stdout]   |                        ^^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `unit` is never used
[INFO] [stdout]   --> src/main.rs:45:4
[INFO] [stdout]    |
[INFO] [stdout] 45 | fn unit() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `say_goodbye` is never used
[INFO] [stdout]    --> src/main.rs:156:4
[INFO] [stdout]     |
[INFO] [stdout] 156 | fn say_goodbye(first_name: &str, last_name: &str) {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `factorial_loop` is never used
[INFO] [stdout]    --> src/main.rs:167:4
[INFO] [stdout]     |
[INFO] [stdout] 167 | fn factorial_loop(n: i32) -> i32 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_map` is never used
[INFO] [stdout]  --> src/closure.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn print_map(value: &String, map_fn: fn(&String) -> String) {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `to_uppercase` is never used
[INFO] [stdout]   --> src/closure.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn to_uppercase(value: &String) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Apple` is never constructed
[INFO] [stdout]  --> src/comparing.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Apple {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Level` is never used
[INFO] [stdout]  --> src/enumer.rs:4:6
[INFO] [stdout]   |
[INFO] [stdout] 4 | enum Level {
[INFO] [stdout]   |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Payment` is never used
[INFO] [stdout]   --> src/enumer.rs:10:6
[INFO] [stdout]    |
[INFO] [stdout] 10 | enum Payment {
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `pay` is never used
[INFO] [stdout]   --> src/enumer.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl Payment {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 17 |     fn pay(&self, amount: u32) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Category` is never constructed
[INFO] [stdout]  --> src/format.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Category {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]  --> src/generic.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Point<T = i32> {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get_x` and `get_y` are never used
[INFO] [stdout]   --> src/generic.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl<T> Point<T> {
[INFO] [stdout]    | ---------------- methods in this implementation
[INFO] [stdout] 10 |     fn get_x(&self) -> &T {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 13 |     fn get_y(&self) -> &T {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `GetValue` is never used
[INFO] [stdout]   --> src/generic.rs:18:7
[INFO] [stdout]    |
[INFO] [stdout] 18 | trait GetValue<T>
[INFO] [stdout]    |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Hi` is never constructed
[INFO] [stdout]   --> src/generic.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | struct Hi<T: CanSayGoodbye> {
[INFO] [stdout]    |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Value` is never used
[INFO] [stdout]   --> src/generic.rs:38:6
[INFO] [stdout]    |
[INFO] [stdout] 38 | enum Value<T> {
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `min` is never used
[INFO] [stdout]   --> src/generic.rs:43:4
[INFO] [stdout]    |
[INFO] [stdout] 43 | fn min<T: PartialOrd>(value1: T, value2: T) -> T {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `double` is never used
[INFO] [stdout]  --> src/options.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn double(x: Option<i32>) -> Option<i32> {
[INFO] [stdout]   |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_ownership` is never used
[INFO] [stdout]   --> src/ownership.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn print_ownership(name: String) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `return_ownership` is never used
[INFO] [stdout]   --> src/ownership.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn return_ownership(first_name: String, second_name: String) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `return_borrow` is never used
[INFO] [stdout]   --> src/ownership.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn return_borrow(first_name: &String, second_name: &String) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mutable_reference` is never used
[INFO] [stdout]   --> src/ownership.rs:50:4
[INFO] [stdout]    |
[INFO] [stdout] 50 | fn mutable_reference(first_name: &mut String) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_text` is never used
[INFO] [stdout]  --> src/recursive.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn print_text(value: String, times: u32) {
[INFO] [stdout]   |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `factorial_recursive` is never used
[INFO] [stdout]   --> src/recursive.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn factorial_recursive(n: u32) -> u32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Person` is never constructed
[INFO] [stdout]  --> src/struct_type.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Person {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `GeoPoint` is never constructed
[INFO] [stdout]  --> src/struct_type.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct GeoPoint(pub f64, pub f64);
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_person` is never used
[INFO] [stdout]  --> src/struct_type.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn print_person(person: &Person) {
[INFO] [stdout]   |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `say_hello` is never used
[INFO] [stdout]   --> src/struct_type.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl Person {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] 16 |     pub fn say_hello(&self, name: &str) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/struct_type.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl GeoPoint {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 22 |     pub fn new(long: f64, lat: f64) -> GeoPoint {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SimplePerson` is never constructed
[INFO] [stdout]  --> src/traits.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct SimplePerson {
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `CanSayHello` is never used
[INFO] [stdout]  --> src/traits.rs:7:7
[INFO] [stdout]   |
[INFO] [stdout] 7 | trait CanSayHello {
[INFO] [stdout]   |       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `CanSayGoodbye` is never used
[INFO] [stdout]   --> src/traits.rs:16:11
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub trait CanSayGoodbye {
[INFO] [stdout]    |           ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `CanSay` is never used
[INFO] [stdout]   --> src/traits.rs:22:7
[INFO] [stdout]    |
[INFO] [stdout] 22 | trait CanSay: CanSayHello + CanSayGoodbye {
[INFO] [stdout]    |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `say_hello_trait` is never used
[INFO] [stdout]   --> src/traits.rs:63:4
[INFO] [stdout]    |
[INFO] [stdout] 63 | fn say_hello_trait(value: &impl CanSayHello) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `say_goodbye_and_hello` is never used
[INFO] [stdout]   --> src/traits.rs:67:4
[INFO] [stdout]    |
[INFO] [stdout] 67 | fn say_goodbye_and_hello(value: &(impl CanSayHello + CanSayGoodbye)) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_simple_person` is never used
[INFO] [stdout]   --> src/traits.rs:72:4
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn create_simple_person(name: String) -> impl CanSayGoodbye {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.18s
[INFO] running `Command { std: "docker" "inspect" "8206f4e62b3f8307b2c9c18669b74a444b432b87c1063edbdc0f7683321b9c32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8206f4e62b3f8307b2c9c18669b74a444b432b87c1063edbdc0f7683321b9c32", kill_on_drop: false }`
[INFO] [stdout] 8206f4e62b3f8307b2c9c18669b74a444b432b87c1063edbdc0f7683321b9c32
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d354cb1a7e3aaaf092c004343bf7b2b58b8efa2aa795d8b6c7d4335e19cbe37d
[INFO] running `Command { std: "docker" "start" "-a" "d354cb1a7e3aaaf092c004343bf7b2b58b8efa2aa795d8b6c7d4335e19cbe37d", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-refresh v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/ownership.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let mut first_name = String::from("Tim");
[INFO] [stdout]    |         ----^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `b` is never read
[INFO] [stdout]    --> src/main.rs:104:13
[INFO] [stdout]     |
[INFO] [stdout] 104 |     let mut b = a; //copy data
[INFO] [stdout]     |             ^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Regular` and `Premium` are never constructed
[INFO] [stdout]  --> src/enumer.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | enum Level {
[INFO] [stdout]   |      ----- variants in this enum
[INFO] [stdout] 5 |     Regular,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 6 |     Premium,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `CreditCard` and `EWallet` are never constructed
[INFO] [stdout]   --> src/enumer.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | enum Payment {
[INFO] [stdout]    |      ------- variants in this enum
[INFO] [stdout] 11 |     CreditCard(String),
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 12 |     BankTransfer(String, String),
[INFO] [stdout] 13 |     EWallet(String, String),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `NONE` is never constructed
[INFO] [stdout]   --> src/generic.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 38 | enum Value<T> {
[INFO] [stdout]    |      ----- variant in this enum
[INFO] [stdout] 39 |     NONE,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `say_goodbye_to` is never used
[INFO] [stdout]   --> src/traits.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub trait CanSayGoodbye {
[INFO] [stdout]    |           ------------- method in this trait
[INFO] [stdout] 17 |     fn say_goodbye(&self) -> String;
[INFO] [stdout] 18 |     fn say_goodbye_to(&self, name: &str) -> String;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `CanSay` is never used
[INFO] [stdout]   --> src/traits.rs:22:7
[INFO] [stdout]    |
[INFO] [stdout] 22 | trait CanSay: CanSayHello + CanSayGoodbye {
[INFO] [stdout]    |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "d354cb1a7e3aaaf092c004343bf7b2b58b8efa2aa795d8b6c7d4335e19cbe37d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d354cb1a7e3aaaf092c004343bf7b2b58b8efa2aa795d8b6c7d4335e19cbe37d", kill_on_drop: false }`
[INFO] [stdout] d354cb1a7e3aaaf092c004343bf7b2b58b8efa2aa795d8b6c7d4335e19cbe37d