[INFO] cloning repository https://github.com/mehedihasan722/Rust-Beginner-Learning
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mehedihasan722/Rust-Beginner-Learning" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmehedihasan722%2FRust-Beginner-Learning", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmehedihasan722%2FRust-Beginner-Learning'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2d5ebd9869c96ff018737c83893335c1095ae394
[INFO] checking mehedihasan722/Rust-Beginner-Learning against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145342-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmehedihasan722%2FRust-Beginner-Learning" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mehedihasan722/Rust-Beginner-Learning
[INFO] finished tweaking git repo https://github.com/mehedihasan722/Rust-Beginner-Learning
[INFO] tweaked toml for git repo https://github.com/mehedihasan722/Rust-Beginner-Learning written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mehedihasan722/Rust-Beginner-Learning on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mehedihasan722/Rust-Beginner-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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 720652125a2f7089cd0fd708eacdcc5d02bf55d521e078766f6cf52829626f04
[INFO] running `Command { std: "docker" "start" "-a" "720652125a2f7089cd0fd708eacdcc5d02bf55d521e078766f6cf52829626f04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "720652125a2f7089cd0fd708eacdcc5d02bf55d521e078766f6cf52829626f04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "720652125a2f7089cd0fd708eacdcc5d02bf55d521e078766f6cf52829626f04", kill_on_drop: false }`
[INFO] [stdout] 720652125a2f7089cd0fd708eacdcc5d02bf55d521e078766f6cf52829626f04
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bd9ba89b207942fca7054386b895daf080f290e24aa257f55d43ca8763110507
[INFO] running `Command { std: "docker" "start" "-a" "bd9ba89b207942fca7054386b895daf080f290e24aa257f55d43ca8763110507", kill_on_drop: false }`
[INFO] [stderr]     Checking hello v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variants `Manager`, `User`, and `Guest` are never constructed
[INFO] [stdout]  --> src/bin/expression.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Access {
[INFO] [stdout]   |      ------ variants in this enum
[INFO] [stdout] 2 |     Admin,
[INFO] [stdout] 3 |     Manager,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 4 |     User,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 5 |     Guest,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Bright` is never constructed
[INFO] [stdout]  --> src/bin/expression1.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | enum Light {
[INFO] [stdout]   |      ----- variant in this enum
[INFO] [stdout] 8 |     Bright,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Color` is never used
[INFO] [stdout]  --> src/bin/documentation.rs:2:6
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum Color {
[INFO] [stdout]   |      ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Mail` is never constructed
[INFO] [stdout]   --> src/bin/documentation.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct Mail {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add` is never used
[INFO] [stdout]   --> src/bin/documentation.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn add(a: i32, b: i32) -> i32 {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Color` is never used
[INFO] [stdout]  --> src/bin/documentation.rs:2:6
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum Color {
[INFO] [stdout]   |      ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Mail` is never constructed
[INFO] [stdout]   --> src/bin/documentation.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct Mail {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add` is never used
[INFO] [stdout]   --> src/bin/documentation.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn add(a: i32, b: i32) -> i32 {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/bin/match-1.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |         Discount::Flat(amount) => println!("Flat discount of {}", amount),
[INFO] [stdout]    |         ---------------------- matches all the relevant values
[INFO] [stdout] 20 |         Discount::Flat(100) => println!("Percent discount of 100%",),
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Percent` is never constructed
[INFO] [stdout]  --> src/bin/match-1.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Discount {
[INFO] [stdout]   |      -------- variant in this enum
[INFO] [stdout] 2 |     Percent(i32),
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Bright` is never constructed
[INFO] [stdout]  --> src/bin/expression1.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | enum Light {
[INFO] [stdout]   |      ----- variant in this enum
[INFO] [stdout] 8 |     Bright,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Manager`, `User`, and `Guest` are never constructed
[INFO] [stdout]  --> src/bin/expression.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Access {
[INFO] [stdout]   |      ------ variants in this enum
[INFO] [stdout] 2 |     Admin,
[INFO] [stdout] 3 |     Manager,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 4 |     User,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 5 |     Guest,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Dim` is never constructed
[INFO] [stdout]  --> src/bin/a1.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Light {
[INFO] [stdout]   |      ----- variant in this enum
[INFO] [stdout] 2 |     Bright,
[INFO] [stdout] 3 |     Dim,
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `display_Light` should have a snake case name
[INFO] [stdout]  --> src/bin/a1.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn display_Light(light: &Light) {
[INFO] [stdout]   |    ^^^^^^^^^^^^^ help: convert the identifier to snake case: `display_light`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/bin/match-1.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |         Discount::Flat(amount) => println!("Flat discount of {}", amount),
[INFO] [stdout]    |         ---------------------- matches all the relevant values
[INFO] [stdout] 20 |         Discount::Flat(100) => println!("Percent discount of 100%",),
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Percent` is never constructed
[INFO] [stdout]  --> src/bin/match-1.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Discount {
[INFO] [stdout]   |      -------- variant in this enum
[INFO] [stdout] 2 |     Percent(i32),
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `age` is never read
[INFO] [stdout]  --> src/bin/result-1.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Adult {
[INFO] [stdout]   |        ----- field in this struct
[INFO] [stdout] 3 |     age: u8,
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Adult` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Dim` is never constructed
[INFO] [stdout]  --> src/bin/a1.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Light {
[INFO] [stdout]   |      ----- variant in this enum
[INFO] [stdout] 2 |     Bright,
[INFO] [stdout] 3 |     Dim,
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `display_Light` should have a snake case name
[INFO] [stdout]  --> src/bin/a1.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn display_Light(light: &Light) {
[INFO] [stdout]   |    ^^^^^^^^^^^^^ help: convert the identifier to snake case: `display_light`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `age` is never read
[INFO] [stdout]  --> src/bin/result-1.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Adult {
[INFO] [stdout]   |        ----- field in this struct
[INFO] [stdout] 3 |     age: u8,
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Adult` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.26s
[INFO] running `Command { std: "docker" "inspect" "bd9ba89b207942fca7054386b895daf080f290e24aa257f55d43ca8763110507", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd9ba89b207942fca7054386b895daf080f290e24aa257f55d43ca8763110507", kill_on_drop: false }`
[INFO] [stdout] bd9ba89b207942fca7054386b895daf080f290e24aa257f55d43ca8763110507