[INFO] cloning repository https://github.com/iamnotstatic/rust-guide
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/iamnotstatic/rust-guide" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiamnotstatic%2Frust-guide", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiamnotstatic%2Frust-guide'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a3026a4c138bccef5be95b731d5818219b816555
[INFO] checking iamnotstatic/rust-guide against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiamnotstatic%2Frust-guide" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/iamnotstatic/rust-guide
[INFO] finished tweaking git repo https://github.com/iamnotstatic/rust-guide
[INFO] tweaked toml for git repo https://github.com/iamnotstatic/rust-guide written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/iamnotstatic/rust-guide 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/iamnotstatic/rust-guide 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]  Downloading crates ...
[INFO] [stderr]   Downloaded iana-time-zone v0.1.55
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 5d8f5ab305c4f01735a985a90a91fd5b8f88d7342830c2780d030f229dea2ddf
[INFO] running `Command { std: "docker" "start" "-a" "5d8f5ab305c4f01735a985a90a91fd5b8f88d7342830c2780d030f229dea2ddf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5d8f5ab305c4f01735a985a90a91fd5b8f88d7342830c2780d030f229dea2ddf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d8f5ab305c4f01735a985a90a91fd5b8f88d7342830c2780d030f229dea2ddf", kill_on_drop: false }`
[INFO] [stdout] 5d8f5ab305c4f01735a985a90a91fd5b8f88d7342830c2780d030f229dea2ddf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 38b0186f11c89e22ba678699808b4f41a3e77ba12c44df143e7c284214e7db35
[INFO] running `Command { std: "docker" "start" "-a" "38b0186f11c89e22ba678699808b4f41a3e77ba12c44df143e7c284214e7db35", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.140
[INFO] [stderr]    Compiling proc-macro2 v1.0.54
[INFO] [stderr]    Compiling quote v1.0.26
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling crossbeam-utils v0.8.15
[INFO] [stderr]     Checking iana-time-zone v0.1.55
[INFO] [stderr]     Checking crossbeam-channel v0.5.7
[INFO] [stderr]     Checking time v0.1.45
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling syn v2.0.12
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking chrono v0.4.24
[INFO] [stderr]    Compiling thiserror-impl v1.0.40
[INFO] [stderr]     Checking thiserror v1.0.40
[INFO] [stderr]     Checking rust-guide v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]  --> src/bin/tuple.rs:6:10
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let (x, y) = coordinate();
[INFO] [stdout]   |          ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `clamp` is never used
[INFO] [stdout]  --> src/bin/test.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn clamp(n: i32, lower: i32, upper: i32) -> i32 {
[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 `div` is never used
[INFO] [stdout]   --> src/bin/test.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn div(a: i32, b: i32) -> Option<i32> {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `concat` is never used
[INFO] [stdout]   --> src/bin/test.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn concat(first: &str, second: &str) -> String {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]  --> src/bin/option.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Student {
[INFO] [stdout]   |        ------- field in this struct
[INFO] [stdout] 2 |     name: String,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Green` and `Yellow` are never constructed
[INFO] [stdout]  --> src/bin/enum.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Color {
[INFO] [stdout]   |      ----- variants in this enum
[INFO] [stdout] 2 |     Red,
[INFO] [stdout] 3 |     Green,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 4 |     Yellow,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Brown` is never constructed
[INFO] [stdout]  --> src/bin/struct.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Color {
[INFO] [stdout]   |      ----- variant in this enum
[INFO] [stdout] 2 |     Brown,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]  --> src/bin/tuple.rs:6:10
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let (x, y) = coordinate();
[INFO] [stdout]   |          ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `attempt_access`
[INFO] [stdout]   --> src/bin/result.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let attempt_access = try_access(employee)?;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_attempt_access`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Maintenance`, `Marketing`, `LineSupervisor`, `KitchenStaff`, and `AssemblyTech` are never constructed
[INFO] [stdout]  --> src/bin/result.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Position {
[INFO] [stdout]   |      -------- variants in this enum
[INFO] [stdout] 2 |     Maintenance,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 3 |     Marketing,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 4 |     Manager,
[INFO] [stdout] 5 |     LineSupervisor,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 6 |     KitchenStaff,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 7 |     AssemblyTech,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Terminated` is never constructed
[INFO] [stdout]   --> src/bin/result.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | enum Status {
[INFO] [stdout]    |      ------ variant in this enum
[INFO] [stdout] 11 |     Active,
[INFO] [stdout] 12 |     Terminated,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> src/bin/trait.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | impl Package {
[INFO] [stdout]   | ------------ associated function in this implementation
[INFO] [stdout] 6 |     fn new(weight: f64) -> Self {
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Brown` is never constructed
[INFO] [stdout]  --> src/bin/struct.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Color {
[INFO] [stdout]   |      ----- variant in this enum
[INFO] [stdout] 2 |     Brown,
[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 `Color` is never used
[INFO] [stdout]  --> src/bin/docs.rs:2:6
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum Color {
[INFO] [stdout]   |      ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Mail` is never constructed
[INFO] [stdout]  --> src/bin/docs.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct Mail {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add` is never used
[INFO] [stdout]   --> src/bin/docs.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn add(a: i32, b: i32) -> i32 {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `attempt_access`
[INFO] [stdout]   --> src/bin/result.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let attempt_access = try_access(employee)?;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_attempt_access`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Maintenance`, `Marketing`, `LineSupervisor`, `KitchenStaff`, and `AssemblyTech` are never constructed
[INFO] [stdout]  --> src/bin/result.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Position {
[INFO] [stdout]   |      -------- variants in this enum
[INFO] [stdout] 2 |     Maintenance,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 3 |     Marketing,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 4 |     Manager,
[INFO] [stdout] 5 |     LineSupervisor,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 6 |     KitchenStaff,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 7 |     AssemblyTech,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Terminated` is never constructed
[INFO] [stdout]   --> src/bin/result.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | enum Status {
[INFO] [stdout]    |      ------ variant in this enum
[INFO] [stdout] 11 |     Active,
[INFO] [stdout] 12 |     Terminated,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]  --> src/bin/option.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Student {
[INFO] [stdout]   |        ------- field in this struct
[INFO] [stdout] 2 |     name: String,
[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 `Color` is never used
[INFO] [stdout]  --> src/bin/docs.rs:2:6
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum Color {
[INFO] [stdout]   |      ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Mail` is never constructed
[INFO] [stdout]  --> src/bin/docs.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct Mail {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add` is never used
[INFO] [stdout]   --> src/bin/docs.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn add(a: i32, b: i32) -> i32 {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `RgbError` is never used
[INFO] [stdout]  --> src/bin/type-conversion.rs:5:6
[INFO] [stdout]   |
[INFO] [stdout] 5 | enum RgbError {
[INFO] [stdout]   |      ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rgb` is never constructed
[INFO] [stdout]   --> src/bin/type-conversion.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct Rgb(u8, u8, u8);
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Green` and `Yellow` are never constructed
[INFO] [stdout]  --> src/bin/enum.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Color {
[INFO] [stdout]   |      ----- variants in this enum
[INFO] [stdout] 2 |     Red,
[INFO] [stdout] 3 |     Green,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 4 |     Yellow,
[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]  --> src/bin/trait.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | impl Package {
[INFO] [stdout]   | ------------ associated function in this implementation
[INFO] [stdout] 6 |     fn new(weight: f64) -> Self {
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.78s
[INFO] running `Command { std: "docker" "inspect" "38b0186f11c89e22ba678699808b4f41a3e77ba12c44df143e7c284214e7db35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38b0186f11c89e22ba678699808b4f41a3e77ba12c44df143e7c284214e7db35", kill_on_drop: false }`
[INFO] [stdout] 38b0186f11c89e22ba678699808b4f41a3e77ba12c44df143e7c284214e7db35
