[INFO] cloning repository https://github.com/tam159/rust_udemy_beginner [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tam159/rust_udemy_beginner" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftam159%2Frust_udemy_beginner", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftam159%2Frust_udemy_beginner'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 554a02ffcea4e1b7ccda29f45fd7a06ae2b71048 [INFO] checking tam159/rust_udemy_beginner against try#5fee451ebd94296ea05214e819c311e164b30af6 for pr-139042 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftam159%2Frust_udemy_beginner" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/tam159/rust_udemy_beginner on toolchain 5fee451ebd94296ea05214e819c311e164b30af6 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5fee451ebd94296ea05214e819c311e164b30af6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/tam159/rust_udemy_beginner [INFO] finished tweaking git repo https://github.com/tam159/rust_udemy_beginner [INFO] tweaked toml for git repo https://github.com/tam159/rust_udemy_beginner written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/tam159/rust_udemy_beginner 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" "+5fee451ebd94296ea05214e819c311e164b30af6" "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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+5fee451ebd94296ea05214e819c311e164b30af6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 0678b719a547a4e927e214bf7f3f7a1165ee3b20b2e3a69924da480f7dbc2a52 [INFO] running `Command { std: "docker" "start" "-a" "0678b719a547a4e927e214bf7f3f7a1165ee3b20b2e3a69924da480f7dbc2a52", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "0678b719a547a4e927e214bf7f3f7a1165ee3b20b2e3a69924da480f7dbc2a52", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0678b719a547a4e927e214bf7f3f7a1165ee3b20b2e3a69924da480f7dbc2a52", kill_on_drop: false }` [INFO] [stdout] 0678b719a547a4e927e214bf7f3f7a1165ee3b20b2e3a69924da480f7dbc2a52 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+5fee451ebd94296ea05214e819c311e164b30af6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 578f6aaf47b7c831e56362b9c3cb7c4bbaa9e08ccafaf1c6d44e707dc2be90ff [INFO] running `Command { std: "docker" "start" "-a" "578f6aaf47b7c831e56362b9c3cb7c4bbaa9e08ccafaf1c6d44e707dc2be90ff", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.140 [INFO] [stderr] Compiling getrandom v0.1.16 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Checking ppv-lite86 v0.2.17 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking rand_chacha v0.2.2 [INFO] [stderr] Checking rand v0.7.3 [INFO] [stderr] Checking rust_udemy_beginner v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: variant `Blue` is never constructed [INFO] [stdout] --> src/sample_enum.rs:18:5 [INFO] [stdout] | [INFO] [stdout] 15 | enum Colors { [INFO] [stdout] | ------ variant in this enum [INFO] [stdout] ... [INFO] [stdout] 18 | Blue, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Colors` 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: field `0` is never read [INFO] [stdout] --> src/sample_enum.rs:23:10 [INFO] [stdout] | [INFO] [stdout] 23 | Name(String), [INFO] [stdout] | ---- ^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `Person` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 23 - Name(String), [INFO] [stdout] 23 + Name(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `Surname` and `Age` are never constructed [INFO] [stdout] --> src/sample_enum.rs:24:5 [INFO] [stdout] | [INFO] [stdout] 22 | enum Person { [INFO] [stdout] | ------ variants in this enum [INFO] [stdout] 23 | Name(String), [INFO] [stdout] 24 | Surname(String), [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] 25 | Age(i32), [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Person` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `read_username_from_file` is never used [INFO] [stdout] --> src/sample_errors.rs:47:4 [INFO] [stdout] | [INFO] [stdout] 47 | fn read_username_from_file() -> Result { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `x` and `y` are never read [INFO] [stdout] --> src/sample_generic.rs:22:5 [INFO] [stdout] | [INFO] [stdout] 21 | struct Point { [INFO] [stdout] | ----- fields in this struct [INFO] [stdout] 22 | x: T, [INFO] [stdout] | ^ [INFO] [stdout] 23 | y: T, [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `Point` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `Blue` and `Green` are never constructed [INFO] [stdout] --> src/sample_generic.rs:29:5 [INFO] [stdout] | [INFO] [stdout] 27 | enum Colors { [INFO] [stdout] | ------ variants in this enum [INFO] [stdout] 28 | Red(T), [INFO] [stdout] 29 | Blue(T), [INFO] [stdout] | ^^^^ [INFO] [stdout] 30 | Green(T), [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Colors` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `x` and `y` are never read [INFO] [stdout] --> src/sample_generic.rs:35:5 [INFO] [stdout] | [INFO] [stdout] 34 | struct Point2 { [INFO] [stdout] | ------ fields in this struct [INFO] [stdout] 35 | x: T, [INFO] [stdout] | ^ [INFO] [stdout] 36 | y: V, [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `Point2` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `name` and `owner` are never read [INFO] [stdout] --> src/sample_memory.rs:60:5 [INFO] [stdout] | [INFO] [stdout] 59 | struct Dog<'l> { [INFO] [stdout] | --- fields in this struct [INFO] [stdout] 60 | name: String, [INFO] [stdout] | ^^^^ [INFO] [stdout] 61 | owner: &'l Person, // Define the same lifetime for both Dog and Person [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Dog` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `awesome` is never read [INFO] [stdout] --> src/sample_traits.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 6 | struct RustDev { [INFO] [stdout] | ------- field in this struct [INFO] [stdout] 7 | awesome: bool, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `awsome` is never read [INFO] [stdout] --> src/sample_traits.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 10 | struct JavaDev { [INFO] [stdout] | ------- field in this struct [INFO] [stdout] 11 | awsome: bool, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `color` is never read [INFO] [stdout] --> src/sample_traits.rs:71:5 [INFO] [stdout] | [INFO] [stdout] 70 | struct Cat { [INFO] [stdout] | --- field in this struct [INFO] [stdout] 71 | color: &'static str, [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: creating a shared reference to mutable static is discouraged [INFO] [stdout] --> src/main.rs:129:28 [INFO] [stdout] | [INFO] [stdout] 129 | println!("R = {}", R); [INFO] [stdout] | ^ shared reference to mutable static [INFO] [stdout] | [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives [INFO] [stdout] = note: `#[warn(static_mut_refs)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused closure that must be used [INFO] [stdout] --> src/main.rs:133:5 [INFO] [stdout] | [INFO] [stdout] 133 | |a: i32, b: i32| println!("{}", a + b); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: closures are lazy and do nothing unless called [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `Blue` is never constructed [INFO] [stdout] --> src/sample_enum.rs:18:5 [INFO] [stdout] | [INFO] [stdout] 15 | enum Colors { [INFO] [stdout] | ------ variant in this enum [INFO] [stdout] ... [INFO] [stdout] 18 | Blue, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Colors` 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: field `0` is never read [INFO] [stdout] --> src/sample_enum.rs:23:10 [INFO] [stdout] | [INFO] [stdout] 23 | Name(String), [INFO] [stdout] | ---- ^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `Person` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 23 - Name(String), [INFO] [stdout] 23 + Name(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `Surname` and `Age` are never constructed [INFO] [stdout] --> src/sample_enum.rs:24:5 [INFO] [stdout] | [INFO] [stdout] 22 | enum Person { [INFO] [stdout] | ------ variants in this enum [INFO] [stdout] 23 | Name(String), [INFO] [stdout] 24 | Surname(String), [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] 25 | Age(i32), [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Person` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `read_username_from_file` is never used [INFO] [stdout] --> src/sample_errors.rs:47:4 [INFO] [stdout] | [INFO] [stdout] 47 | fn read_username_from_file() -> Result { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `x` and `y` are never read [INFO] [stdout] --> src/sample_generic.rs:22:5 [INFO] [stdout] | [INFO] [stdout] 21 | struct Point { [INFO] [stdout] | ----- fields in this struct [INFO] [stdout] 22 | x: T, [INFO] [stdout] | ^ [INFO] [stdout] 23 | y: T, [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `Point` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `Blue` and `Green` are never constructed [INFO] [stdout] --> src/sample_generic.rs:29:5 [INFO] [stdout] | [INFO] [stdout] 27 | enum Colors { [INFO] [stdout] | ------ variants in this enum [INFO] [stdout] 28 | Red(T), [INFO] [stdout] 29 | Blue(T), [INFO] [stdout] | ^^^^ [INFO] [stdout] 30 | Green(T), [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Colors` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `x` and `y` are never read [INFO] [stdout] --> src/sample_generic.rs:35:5 [INFO] [stdout] | [INFO] [stdout] 34 | struct Point2 { [INFO] [stdout] | ------ fields in this struct [INFO] [stdout] 35 | x: T, [INFO] [stdout] | ^ [INFO] [stdout] 36 | y: V, [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `Point2` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `name` and `owner` are never read [INFO] [stdout] --> src/sample_memory.rs:60:5 [INFO] [stdout] | [INFO] [stdout] 59 | struct Dog<'l> { [INFO] [stdout] | --- fields in this struct [INFO] [stdout] 60 | name: String, [INFO] [stdout] | ^^^^ [INFO] [stdout] 61 | owner: &'l Person, // Define the same lifetime for both Dog and Person [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Dog` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `awesome` is never read [INFO] [stdout] --> src/sample_traits.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 6 | struct RustDev { [INFO] [stdout] | ------- field in this struct [INFO] [stdout] 7 | awesome: bool, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `awsome` is never read [INFO] [stdout] --> src/sample_traits.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 10 | struct JavaDev { [INFO] [stdout] | ------- field in this struct [INFO] [stdout] 11 | awsome: bool, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `color` is never read [INFO] [stdout] --> src/sample_traits.rs:71:5 [INFO] [stdout] | [INFO] [stdout] 70 | struct Cat { [INFO] [stdout] | --- field in this struct [INFO] [stdout] 71 | color: &'static str, [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: creating a shared reference to mutable static is discouraged [INFO] [stdout] --> src/main.rs:129:28 [INFO] [stdout] | [INFO] [stdout] 129 | println!("R = {}", R); [INFO] [stdout] | ^ shared reference to mutable static [INFO] [stdout] | [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives [INFO] [stdout] = note: `#[warn(static_mut_refs)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused closure that must be used [INFO] [stdout] --> src/main.rs:133:5 [INFO] [stdout] | [INFO] [stdout] 133 | |a: i32, b: i32| println!("{}", a + b); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: closures are lazy and do nothing unless called [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.81s [INFO] running `Command { std: "docker" "inspect" "578f6aaf47b7c831e56362b9c3cb7c4bbaa9e08ccafaf1c6d44e707dc2be90ff", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "578f6aaf47b7c831e56362b9c3cb7c4bbaa9e08ccafaf1c6d44e707dc2be90ff", kill_on_drop: false }` [INFO] [stdout] 578f6aaf47b7c831e56362b9c3cb7c4bbaa9e08ccafaf1c6d44e707dc2be90ff