[INFO] cloning repository https://github.com/wangtao2014/rust-learning
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wangtao2014/rust-learning" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwangtao2014%2Frust-learning", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwangtao2014%2Frust-learning'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ea5ff2ddeaa2c90fdcce9606a204d8660fe399eb
[INFO] checking wangtao2014/rust-learning against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwangtao2014%2Frust-learning" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/wangtao2014/rust-learning
[INFO] finished tweaking git repo https://github.com/wangtao2014/rust-learning
[INFO] tweaked toml for git repo https://github.com/wangtao2014/rust-learning written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/wangtao2014/rust-learning on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/wangtao2014/rust-learning 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cookie v0.16.1
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[INFO] [stderr]   Downloaded rocket_codegen v0.5.0-rc.2
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5665b493c2199cf6450ea88430530561dd474587c1b98296dbddd7541d4e08c5
[INFO] running `Command { std: "docker" "start" "-a" "5665b493c2199cf6450ea88430530561dd474587c1b98296dbddd7541d4e08c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5665b493c2199cf6450ea88430530561dd474587c1b98296dbddd7541d4e08c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5665b493c2199cf6450ea88430530561dd474587c1b98296dbddd7541d4e08c5", kill_on_drop: false }`
[INFO] [stdout] 5665b493c2199cf6450ea88430530561dd474587c1b98296dbddd7541d4e08c5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 22afad94b9dcf894ece4b406f8c576784b69c6c4c4b363ede17d4f571212e33f
[INFO] running `Command { std: "docker" "start" "-a" "22afad94b9dcf894ece4b406f8c576784b69c6c4c4b363ede17d4f571212e33f", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling libc v0.2.138
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
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[INFO] [stderr]    Compiling async-trait v0.1.59
[INFO] [stderr]    Compiling state v0.5.3
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[INFO] [stderr]     Checking spin v0.9.4
[INFO] [stderr]     Checking fastrand v1.8.0
[INFO] [stderr]    Compiling unicode-xid v0.2.4
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking hello_utils v0.1.0 (/opt/rustwide/workdir/live-coding/world_hello/hello_utils)
[INFO] [stderr]     Checking chapter-10-trait-lifetime v0.1.0 (/opt/rustwide/workdir/live-coding/chapter-10-trait-lifetime)
[INFO] [stderr]     Checking chapter-11-test v0.1.0 (/opt/rustwide/workdir/live-coding/chapter-11-test)
[INFO] [stderr]     Checking guessing_game v0.1.0 (/opt/rustwide/workdir/live-coding/guessing_game)
[INFO] [stderr]     Checking tempfile v3.3.0
[INFO] [stdout] warning: unused variable: `item2`
[INFO] [stdout]   --> live-coding/chapter-10-trait-lifetime/src/lib.rs:73:68
[INFO] [stdout]    |
[INFO] [stdout] 73 | pub fn notify4<T: Summary + Display, U: Clone + Display>(item1: T, item2: U) {
[INFO] [stdout]    |                                                                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_item2`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking world_hello v0.1.0 (/opt/rustwide/workdir/live-coding/world_hello)
[INFO] [stdout] warning: unused variable: `item2`
[INFO] [stdout]   --> live-coding/chapter-10-trait-lifetime/src/lib.rs:77:32
[INFO] [stdout]    |
[INFO] [stdout] 77 | pub fn notify5<T, U>(item1: T, item2: U) -> String
[INFO] [stdout]    |                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_item2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Pair` is never constructed
[INFO] [stdout]   --> live-coding/chapter-10-trait-lifetime/src/lib.rs:86:8
[INFO] [stdout]    |
[INFO] [stdout] 86 | struct Pair<T> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> live-coding/chapter-10-trait-lifetime/src/lib.rs:92:8
[INFO] [stdout]    |
[INFO] [stdout] 91 | impl<T> Pair<T> {
[INFO] [stdout]    | --------------- associated function in this implementation
[INFO] [stdout] 92 |     fn new(x: T, y: T) -> Self { 
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `cmp_display` is never used
[INFO] [stdout]   --> live-coding/chapter-10-trait-lifetime/src/lib.rs:98:8
[INFO] [stdout]    |
[INFO] [stdout] 97 | impl<T: Display + PartialOrd> Pair<T> {
[INFO] [stdout]    | ------------------------------------- method in this implementation
[INFO] [stdout] 98 |     fn cmp_display(&self) {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `random_self::random_test`
[INFO] [stdout]  --> live-coding/world_hello/src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use random_self::random_test;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `chapter_10_trait_lifetime::notify`
[INFO] [stdout]  --> live-coding/chapter-10-trait-lifetime/src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use chapter_10_trait_lifetime::notify;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `priority_self as other_priority_self`
[INFO] [stdout]  --> live-coding/world_hello/src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use priority_self as other_priority_self;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `chapter_10_trait_lifetime::notify`
[INFO] [stdout]  --> live-coding/chapter-10-trait-lifetime/src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use chapter_10_trait_lifetime::notify;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `y` is never read
[INFO] [stdout]   --> live-coding/chapter-10-trait-lifetime/src/main.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | struct Point<T> {
[INFO] [stdout]    |        ----- field in this struct
[INFO] [stdout] 18 |     x: T,
[INFO] [stdout] 19 |     y: T,
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `x1` is never used
[INFO] [stdout]   --> live-coding/chapter-10-trait-lifetime/src/main.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | impl Point<i32> {
[INFO] [stdout]    | --------------- method in this implementation
[INFO] [stdout] 31 |     fn x1(&self) -> &i32 {
[INFO] [stdout]    |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `y` is never read
[INFO] [stdout]   --> live-coding/chapter-10-trait-lifetime/src/main.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | struct Point<T> {
[INFO] [stdout]    |        ----- field in this struct
[INFO] [stdout] 18 |     x: T,
[INFO] [stdout] 19 |     y: T,
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `x1` is never used
[INFO] [stdout]   --> live-coding/chapter-10-trait-lifetime/src/main.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | impl Point<i32> {
[INFO] [stdout]    | --------------- method in this implementation
[INFO] [stdout] 31 |     fn x1(&self) -> &i32 {
[INFO] [stdout]    |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking my-project v0.1.0 (/opt/rustwide/workdir/live-coding/my-project)
[INFO] [stdout] warning: unused import: `random_self::random_test`
[INFO] [stdout]  --> live-coding/world_hello/src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use random_self::random_test;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `priority_self as other_priority_self`
[INFO] [stdout]  --> live-coding/world_hello/src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use priority_self as other_priority_self;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking life-time v0.1.0 (/opt/rustwide/workdir/live-coding/life-time)
[INFO] [stdout] warning: function `random_test` is never used
[INFO] [stdout]  --> live-coding/world_hello/src/random_self.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn random_test() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Gender` is never used
[INFO] [stdout]  --> live-coding/world_hello/src/types.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Gender {
[INFO] [stdout]   |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ConnectionState` is never used
[INFO] [stdout]  --> live-coding/world_hello/src/types.rs:7:6
[INFO] [stdout]   |
[INFO] [stdout] 7 | enum ConnectionState {
[INFO] [stdout]   |      ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `HalfOpen` is never constructed
[INFO] [stdout]   --> live-coding/world_hello/src/types.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct HalfOpen {}
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FullSession` is never constructed
[INFO] [stdout]   --> live-coding/world_hello/src/types.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct FullSession {}
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `User` is never constructed
[INFO] [stdout]   --> live-coding/world_hello/src/types.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | struct User {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `value_tour` is never used
[INFO] [stdout]  --> live-coding/world_hello/src/value_tour.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn value_tour() {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `random_test` is never used
[INFO] [stdout]  --> live-coding/world_hello/src/random_self.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn random_test() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Gender` is never used
[INFO] [stdout]  --> live-coding/world_hello/src/types.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Gender {
[INFO] [stdout]   |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ConnectionState` is never used
[INFO] [stdout]  --> live-coding/world_hello/src/types.rs:7:6
[INFO] [stdout]   |
[INFO] [stdout] 7 | enum ConnectionState {
[INFO] [stdout]   |      ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `HalfOpen` is never constructed
[INFO] [stdout]   --> live-coding/world_hello/src/types.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct HalfOpen {}
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FullSession` is never constructed
[INFO] [stdout]   --> live-coding/world_hello/src/types.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct FullSession {}
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `User` is never constructed
[INFO] [stdout]   --> live-coding/world_hello/src/types.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | struct User {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `value_tour` is never used
[INFO] [stdout]  --> live-coding/world_hello/src/value_tour.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn value_tour() {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking adder v0.1.0 (/opt/rustwide/workdir/live-coding/adder)
[INFO] [stderr]     Checking chapter-09-error v0.1.0 (/opt/rustwide/workdir/live-coding/chapter-09-error)
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> live-coding/chapter-09-error/src/main.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let f = File::open("hello.txt").unwrap_or_else(|error|{
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `load_file` is never used
[INFO] [stdout]  --> live-coding/chapter-09-error/src/main.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn load_file() {
[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 `load_file_unwrap` is never used
[INFO] [stdout]   --> live-coding/chapter-09-error/src/main.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn load_file_unwrap() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_file` is never used
[INFO] [stdout]   --> live-coding/chapter-09-error/src/main.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn create_file() {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_file_clouser` is never used
[INFO] [stdout]   --> live-coding/chapter-09-error/src/main.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn create_file_clouser() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_username_from_file_another2` is never used
[INFO] [stdout]   --> live-coding/chapter-09-error/src/main.rs:76:4
[INFO] [stdout]    |
[INFO] [stdout] 76 | fn read_username_from_file_another2() -> Result<String, Error> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> live-coding/chapter-09-error/src/main.rs:97:5
[INFO] [stdout]    |
[INFO] [stdout] 97 |     open_file_error();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 97 |     let _ = open_file_error();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> live-coding/chapter-09-error/src/main.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let f = File::open("hello.txt").unwrap_or_else(|error|{
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `File` and `Read`
[INFO] [stdout]  --> live-coding/adder/src/lib.rs:1:33
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{result::*, io::{self, Read}, fs::{File, self}};
[INFO] [stdout]   |                                 ^^^^        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `load_file` is never used
[INFO] [stdout]  --> live-coding/chapter-09-error/src/main.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn load_file() {
[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 `load_file_unwrap` is never used
[INFO] [stdout]   --> live-coding/chapter-09-error/src/main.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn load_file_unwrap() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_file` is never used
[INFO] [stdout]   --> live-coding/chapter-09-error/src/main.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn create_file() {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_file_clouser` is never used
[INFO] [stdout]   --> live-coding/chapter-09-error/src/main.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn create_file_clouser() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_username_from_file_another2` is never used
[INFO] [stdout]   --> live-coding/chapter-09-error/src/main.rs:76:4
[INFO] [stdout]    |
[INFO] [stdout] 76 | fn read_username_from_file_another2() -> Result<String, Error> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> live-coding/chapter-09-error/src/main.rs:97:5
[INFO] [stdout]    |
[INFO] [stdout] 97 |     open_file_error();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 97 |     let _ = open_file_error();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> live-coding/adder/src/lib.rs:63:13
[INFO] [stdout]    |
[INFO] [stdout] 63 |         let f = match file {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `File` and `Read`
[INFO] [stdout]  --> live-coding/adder/src/lib.rs:1:33
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{result::*, io::{self, Read}, fs::{File, self}};
[INFO] [stdout]   |                                 ^^^^        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item2`
[INFO] [stdout]   --> live-coding/chapter-10-trait-lifetime/src/lib.rs:73:68
[INFO] [stdout]    |
[INFO] [stdout] 73 | pub fn notify4<T: Summary + Display, U: Clone + Display>(item1: T, item2: U) {
[INFO] [stdout]    |                                                                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_item2`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item2`
[INFO] [stdout]   --> live-coding/chapter-10-trait-lifetime/src/lib.rs:77:32
[INFO] [stdout]    |
[INFO] [stdout] 77 | pub fn notify5<T, U>(item1: T, item2: U) -> String
[INFO] [stdout]    |                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_item2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Pair` is never constructed
[INFO] [stdout]   --> live-coding/chapter-10-trait-lifetime/src/lib.rs:86:8
[INFO] [stdout]    |
[INFO] [stdout] 86 | struct Pair<T> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> live-coding/chapter-10-trait-lifetime/src/lib.rs:92:8
[INFO] [stdout]    |
[INFO] [stdout] 91 | impl<T> Pair<T> {
[INFO] [stdout]    | --------------- associated function in this implementation
[INFO] [stdout] 92 |     fn new(x: T, y: T) -> Self { 
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `cmp_display` is never used
[INFO] [stdout]   --> live-coding/chapter-10-trait-lifetime/src/lib.rs:98:8
[INFO] [stdout]    |
[INFO] [stdout] 97 | impl<T: Display + PartialOrd> Pair<T> {
[INFO] [stdout]    | ------------------------------------- method in this implementation
[INFO] [stdout] 98 |     fn cmp_display(&self) {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling futures v0.3.25
[INFO] [stderr]    Compiling devise_core v0.3.1
[INFO] [stderr]    Compiling tokio-macros v1.8.2
[INFO] [stderr]    Compiling tracing-attributes v0.1.23
[INFO] [stderr]    Compiling pear_codegen v0.2.3
[INFO] [stderr]    Compiling ref-cast-impl v1.0.13
[INFO] [stderr]    Compiling async-stream-impl v0.3.3
[INFO] [stderr]     Checking async-stream v0.3.3
[INFO] [stderr]    Compiling devise_codegen v0.3.1
[INFO] [stderr]    Compiling pear v0.2.3
[INFO] [stderr]     Checking tracing v0.1.37
[INFO] [stderr]    Compiling devise v0.3.1
[INFO] [stderr]     Checking tokio-util v0.7.4
[INFO] [stderr]     Checking tokio-stream v0.1.11
[INFO] [stderr]     Checking toml v0.5.9
[INFO] [stderr]     Checking ubyte v0.10.3
[INFO] [stderr]     Checking h2 v0.3.15
[INFO] [stderr]     Checking training-code v0.1.0 (/opt/rustwide/workdir/live-coding/training-code)
[INFO] [stdout] warning: field `permit` is never read
[INFO] [stdout]  --> live-coding/training-code/src/ticket.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct Ticket<'a> {
[INFO] [stdout]   |            ------ field in this struct
[INFO] [stdout] 9 |     permit: SemaphorePermit<'a>,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Ticket` 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: unused variable: `tickets`
[INFO] [stdout]   --> live-coding/training-code/src/ticket.rs:53:13
[INFO] [stdout]    |
[INFO] [stdout] 53 |         let tickets: Vec<Ticket> = (0..4).map(|_i| museum.get_ticket().unwrap()).collect();
[INFO] [stdout]    |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tickets`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `permit` is never read
[INFO] [stdout]  --> live-coding/training-code/src/ticket.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct Ticket<'a> {
[INFO] [stdout]   |            ------ field in this struct
[INFO] [stdout] 9 |     permit: SemaphorePermit<'a>,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Ticket` 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] [stderr]     Checking hyper v0.14.23
[INFO] [stderr]     Checking rocket_http v0.5.0-rc.2
[INFO] [stderr]    Compiling rocket_codegen v0.5.0-rc.2
[INFO] [stderr]     Checking chat-app v0.1.0 (/opt/rustwide/workdir/live-coding/chat-app)
[INFO] [stdout] warning: lint `private_in_public` has been removed: replaced with another group of lints, see RFC <https://rust-lang.github.io/rfcs/2145-type-privacy.html> for more information
[INFO] [stdout]   --> live-coding/chat-app/src/main.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | #[cfg_attr(test, derive(PartialEq, UriDisplayQuery))]
[INFO] [stdout]    | ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(renamed_and_removed_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lint `private_in_public` has been removed: replaced with another group of lints, see RFC <https://rust-lang.github.io/rfcs/2145-type-privacy.html> for more information
[INFO] [stdout]   --> live-coding/chat-app/src/main.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | #[serde(crate = "rocket::serde")]
[INFO] [stdout]    | ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(renamed_and_removed_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 47.75s
[INFO] running `Command { std: "docker" "inspect" "22afad94b9dcf894ece4b406f8c576784b69c6c4c4b363ede17d4f571212e33f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22afad94b9dcf894ece4b406f8c576784b69c6c4c4b363ede17d4f571212e33f", kill_on_drop: false }`
[INFO] [stdout] 22afad94b9dcf894ece4b406f8c576784b69c6c4c4b363ede17d4f571212e33f
