[INFO] cloning repository https://github.com/saqib40/learning-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/saqib40/learning-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsaqib40%2Flearning-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsaqib40%2Flearning-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5bb6595de4d4656c970248bdabc088d0bc5b2990
[INFO] testing saqib40/learning-rust against try#b83b707f97d809763b7861afa7638871f3339a33 for pr-145838-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsaqib40%2Flearning-rust" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/saqib40/learning-rust
[INFO] finished tweaking git repo https://github.com/saqib40/learning-rust
[INFO] tweaked toml for git repo https://github.com/saqib40/learning-rust written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/saqib40/learning-rust on toolchain b83b707f97d809763b7861afa7638871f3339a33
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/saqib40/learning-rust 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" "+b83b707f97d809763b7861afa7638871f3339a33" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8bc4558a51b79d7d73a67c0a882e029b539786ebf92d3d558c8cb8bf9baa6870
[INFO] running `Command { std: "docker" "start" "-a" "8bc4558a51b79d7d73a67c0a882e029b539786ebf92d3d558c8cb8bf9baa6870", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8bc4558a51b79d7d73a67c0a882e029b539786ebf92d3d558c8cb8bf9baa6870", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8bc4558a51b79d7d73a67c0a882e029b539786ebf92d3d558c8cb8bf9baa6870", kill_on_drop: false }`
[INFO] [stdout] 8bc4558a51b79d7d73a67c0a882e029b539786ebf92d3d558c8cb8bf9baa6870
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c8282ef5c12929ea5b4fd69379c18781eff5515907ff8922d2ee430f955db7e3
[INFO] running `Command { std: "docker" "start" "-a" "c8282ef5c12929ea5b4fd69379c18781eff5515907ff8922d2ee430f955db7e3", kill_on_drop: false }`
[INFO] [stderr]    Compiling project1 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]  --> src/ownership_stack.rs:3:6
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let y = x; // unused variable warning
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/borrow/rules.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let mut s = String::from("Rust");
[INFO] [stdout]   |         ----^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/structs/heap_trait.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let mut user1 = User {
[INFO] [stdout]   |         ----^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/structs/stack_trait.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let mut user1 = User {
[INFO] [stdout]   |         ----^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `handle`
[INFO] [stdout]   --> src/threads/ex1.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let handle = thread::spawn(move || {
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_handle`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `sign_in_count` and `username` are never read
[INFO] [stdout]  --> src/structs/heap_trait.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct User {
[INFO] [stdout]   |        ---- fields in this struct
[INFO] [stdout] 3 |     active: bool,
[INFO] [stdout] 4 |     sign_in_count: u64,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 5 |     username: String,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `User` has a derived impl for the trait `Clone`, 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: field `sign_in_count` is never read
[INFO] [stdout]  --> src/structs/stack_trait.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct User {
[INFO] [stdout]   |        ---- field in this struct
[INFO] [stdout] 3 |     active: bool,
[INFO] [stdout] 4 |     sign_in_count: u64,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `User` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `North`, `South`, and `West` are never constructed
[INFO] [stdout]  --> src/enums/basic.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Direction {
[INFO] [stdout]   |      --------- variants in this enum
[INFO] [stdout] 2 |     North,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 3 |     South,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 4 |     East,
[INFO] [stdout] 5 |     West,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Shape` is never used
[INFO] [stdout]  --> src/enums/values.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Shape {
[INFO] [stdout]   |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ex1` is never used
[INFO] [stdout]  --> src/threads/ex1.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn ex1() {
[INFO] [stdout]   |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ex2` is never used
[INFO] [stdout]   --> src/threads/ex1.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn ex2() {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ex3` is never used
[INFO] [stdout]   --> src/threads/ex1.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn ex3() {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ex4` is never used
[INFO] [stdout]  --> src/threads/ex2.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn ex4() {
[INFO] [stdout]   |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ex5` is never used
[INFO] [stdout]   --> src/threads/ex2.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn ex5() {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `optionEg` should have a snake case name
[INFO] [stdout]   --> src/option.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn optionEg() {
[INFO] [stdout]    |        ^^^^^^^^ help: convert the identifier to snake case: `option_eg`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.53s
[INFO] running `Command { std: "docker" "inspect" "c8282ef5c12929ea5b4fd69379c18781eff5515907ff8922d2ee430f955db7e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8282ef5c12929ea5b4fd69379c18781eff5515907ff8922d2ee430f955db7e3", kill_on_drop: false }`
[INFO] [stdout] c8282ef5c12929ea5b4fd69379c18781eff5515907ff8922d2ee430f955db7e3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3a2d48f08fd13d622e65455f8411db30d84c4d0283bb12c4f44c74ef132915eb
[INFO] running `Command { std: "docker" "start" "-a" "3a2d48f08fd13d622e65455f8411db30d84c4d0283bb12c4f44c74ef132915eb", kill_on_drop: false }`
[INFO] [stderr]    Compiling project1 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]  --> src/ownership_stack.rs:3:6
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let y = x; // unused variable warning
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/borrow/rules.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let mut s = String::from("Rust");
[INFO] [stdout]   |         ----^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/structs/heap_trait.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let mut user1 = User {
[INFO] [stdout]   |         ----^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/structs/stack_trait.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let mut user1 = User {
[INFO] [stdout]   |         ----^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `handle`
[INFO] [stdout]   --> src/threads/ex1.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let handle = thread::spawn(move || {
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_handle`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `sign_in_count` and `username` are never read
[INFO] [stdout]  --> src/structs/heap_trait.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct User {
[INFO] [stdout]   |        ---- fields in this struct
[INFO] [stdout] 3 |     active: bool,
[INFO] [stdout] 4 |     sign_in_count: u64,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 5 |     username: String,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `User` has a derived impl for the trait `Clone`, 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: field `sign_in_count` is never read
[INFO] [stdout]  --> src/structs/stack_trait.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct User {
[INFO] [stdout]   |        ---- field in this struct
[INFO] [stdout] 3 |     active: bool,
[INFO] [stdout] 4 |     sign_in_count: u64,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `User` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `North`, `South`, and `West` are never constructed
[INFO] [stdout]  --> src/enums/basic.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Direction {
[INFO] [stdout]   |      --------- variants in this enum
[INFO] [stdout] 2 |     North,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 3 |     South,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 4 |     East,
[INFO] [stdout] 5 |     West,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Shape` is never used
[INFO] [stdout]  --> src/enums/values.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Shape {
[INFO] [stdout]   |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ex1` is never used
[INFO] [stdout]  --> src/threads/ex1.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn ex1() {
[INFO] [stdout]   |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ex2` is never used
[INFO] [stdout]   --> src/threads/ex1.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn ex2() {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ex3` is never used
[INFO] [stdout]   --> src/threads/ex1.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn ex3() {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ex4` is never used
[INFO] [stdout]  --> src/threads/ex2.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn ex4() {
[INFO] [stdout]   |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ex5` is never used
[INFO] [stdout]   --> src/threads/ex2.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn ex5() {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `optionEg` should have a snake case name
[INFO] [stdout]   --> src/option.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn optionEg() {
[INFO] [stdout]    |        ^^^^^^^^ help: convert the identifier to snake case: `option_eg`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `Command { std: "docker" "inspect" "3a2d48f08fd13d622e65455f8411db30d84c4d0283bb12c4f44c74ef132915eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a2d48f08fd13d622e65455f8411db30d84c4d0283bb12c4f44c74ef132915eb", kill_on_drop: false }`
[INFO] [stdout] 3a2d48f08fd13d622e65455f8411db30d84c4d0283bb12c4f44c74ef132915eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9086d953d7ae10b87aeaabd6d6feb484c5c95dfbc2c3e3d9fdf24ca7e1cb5fc2
[INFO] running `Command { std: "docker" "start" "-a" "9086d953d7ae10b87aeaabd6d6feb484c5c95dfbc2c3e3d9fdf24ca7e1cb5fc2", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]  --> src/ownership_stack.rs:3:6
[INFO] [stderr]   |
[INFO] [stderr] 3 |     let y = x; // unused variable warning
[INFO] [stderr]   |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/borrow/rules.rs:2:9
[INFO] [stderr]   |
[INFO] [stderr] 2 |     let mut s = String::from("Rust");
[INFO] [stderr]   |         ----^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/structs/heap_trait.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let mut user1 = User {
[INFO] [stderr]   |         ----^^^^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/structs/stack_trait.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let mut user1 = User {
[INFO] [stderr]   |         ----^^^^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `handle`
[INFO] [stderr]   --> src/threads/ex1.rs:26:9
[INFO] [stderr]    |
[INFO] [stderr] 26 |     let handle = thread::spawn(move || {
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_handle`
[INFO] [stderr] 
[INFO] [stderr] warning: fields `sign_in_count` and `username` are never read
[INFO] [stderr]  --> src/structs/heap_trait.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | struct User {
[INFO] [stdout] 
[INFO] [stderr]   |        ---- fields in this struct
[INFO] [stdout] running 0 tests
[INFO] [stderr] 3 |     active: bool,
[INFO] [stdout] 
[INFO] [stderr] 4 |     sign_in_count: u64,
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stderr] 5 |     username: String,
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `User` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `sign_in_count` is never read
[INFO] [stderr]  --> src/structs/stack_trait.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | struct User {
[INFO] [stderr]   |        ---- field in this struct
[INFO] [stderr] 3 |     active: bool,
[INFO] [stderr] 4 |     sign_in_count: u64,
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `User` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: variants `North`, `South`, and `West` are never constructed
[INFO] [stderr]  --> src/enums/basic.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | enum Direction {
[INFO] [stderr]   |      --------- variants in this enum
[INFO] [stderr] 2 |     North,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 3 |     South,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 4 |     East,
[INFO] [stderr] 5 |     West,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Shape` is never used
[INFO] [stderr]  --> src/enums/values.rs:1:6
[INFO] [stderr]   |
[INFO] [stderr] 1 | enum Shape {
[INFO] [stderr]   |      ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `ex1` is never used
[INFO] [stderr]  --> src/threads/ex1.rs:3:4
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn ex1() {
[INFO] [stderr]   |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `ex2` is never used
[INFO] [stderr]   --> src/threads/ex1.rs:13:4
[INFO] [stderr]    |
[INFO] [stderr] 13 | fn ex2() {
[INFO] [stderr]    |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `ex3` is never used
[INFO] [stderr]   --> src/threads/ex1.rs:23:4
[INFO] [stderr]    |
[INFO] [stderr] 23 | fn ex3() {
[INFO] [stderr]    |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `ex4` is never used
[INFO] [stderr]  --> src/threads/ex2.rs:4:4
[INFO] [stderr]   |
[INFO] [stderr] 4 | fn ex4() {
[INFO] [stderr]   |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `ex5` is never used
[INFO] [stderr]   --> src/threads/ex2.rs:16:4
[INFO] [stderr]    |
[INFO] [stderr] 16 | fn ex5() {
[INFO] [stderr]    |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `optionEg` should have a snake case name
[INFO] [stderr]   --> src/option.rs:10:8
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub fn optionEg() {
[INFO] [stderr]    |        ^^^^^^^^ help: convert the identifier to snake case: `option_eg`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `project1` (bin "project1" test) generated 15 warnings (run `cargo fix --bin "project1" --tests` to apply 3 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/project1-5c204c2e4428c844)
[INFO] running `Command { std: "docker" "inspect" "9086d953d7ae10b87aeaabd6d6feb484c5c95dfbc2c3e3d9fdf24ca7e1cb5fc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9086d953d7ae10b87aeaabd6d6feb484c5c95dfbc2c3e3d9fdf24ca7e1cb5fc2", kill_on_drop: false }`
[INFO] [stdout] 9086d953d7ae10b87aeaabd6d6feb484c5c95dfbc2c3e3d9fdf24ca7e1cb5fc2