[INFO] cloning repository https://github.com/rjoydip/learn-rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rjoydip/learn-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frjoydip%2Flearn-rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frjoydip%2Flearn-rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 0e91f308ef5e3ecc09594c3d9db61be3dfe1b6f5 [INFO] checking rjoydip/learn-rust against master#a932eb36f8adf6c8cdfc450f063943da3112d621 for pr-140209-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frjoydip%2Flearn-rust" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/rjoydip/learn-rust on toolchain a932eb36f8adf6c8cdfc450f063943da3112d621 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a932eb36f8adf6c8cdfc450f063943da3112d621" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/rjoydip/learn-rust [INFO] finished tweaking git repo https://github.com/rjoydip/learn-rust [INFO] tweaked toml for git repo https://github.com/rjoydip/learn-rust written to /workspace/builds/worker-0-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/rjoydip/learn-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" "+a932eb36f8adf6c8cdfc450f063943da3112d621" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024 [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-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+a932eb36f8adf6c8cdfc450f063943da3112d621" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 1608a637391615055f80c317841131c98ccf069330276dcbde0027f76bcc8384 [INFO] running `Command { std: "docker" "start" "-a" "1608a637391615055f80c317841131c98ccf069330276dcbde0027f76bcc8384", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "1608a637391615055f80c317841131c98ccf069330276dcbde0027f76bcc8384", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1608a637391615055f80c317841131c98ccf069330276dcbde0027f76bcc8384", kill_on_drop: false }` [INFO] [stdout] 1608a637391615055f80c317841131c98ccf069330276dcbde0027f76bcc8384 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+a932eb36f8adf6c8cdfc450f063943da3112d621" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 21dfaf6c3238b8c113ed3cb158de789bbc2374e670b83a576ce3d29edacef0e4 [INFO] running `Command { std: "docker" "start" "-a" "21dfaf6c3238b8c113ed3cb158de789bbc2374e670b83a576ce3d29edacef0e4", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024 [INFO] [stderr] Checking learn_rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] error[E0428]: the name `main` is defined multiple times [INFO] [stdout] --> examples/struct.rs:32:1 [INFO] [stdout] | [INFO] [stdout] 15 | fn main() { [INFO] [stdout] | --------- previous definition of the value `main` here [INFO] [stdout] ... [INFO] [stdout] 32 | fn main() { [INFO] [stdout] | ^^^^^^^^^ `main` redefined here [INFO] [stdout] | [INFO] [stdout] = note: `main` must be defined only once in the value namespace of this module [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0428]: the name `main` is defined multiple times [INFO] [stdout] --> examples/owenership_borrowing.rs:21:1 [INFO] [stdout] | [INFO] [stdout] 4 | fn main() { [INFO] [stdout] | --------- previous definition of the value `main` here [INFO] [stdout] ... [INFO] [stdout] 21 | fn main() { [INFO] [stdout] | ^^^^^^^^^ `main` redefined here [INFO] [stdout] | [INFO] [stdout] = note: `main` must be defined only once in the value namespace of this module [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0428]: the name `main` is defined multiple times [INFO] [stdout] --> examples/owenership_borrowing.rs:55:1 [INFO] [stdout] | [INFO] [stdout] 4 | fn main() { [INFO] [stdout] | --------- previous definition of the value `main` here [INFO] [stdout] ... [INFO] [stdout] 55 | fn main() { [INFO] [stdout] | ^^^^^^^^^ `main` redefined here [INFO] [stdout] | [INFO] [stdout] = note: `main` must be defined only once in the value namespace of this module [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0428]: the name `main` is defined multiple times [INFO] [stdout] --> examples/owenership_borrowing.rs:74:1 [INFO] [stdout] | [INFO] [stdout] 4 | fn main() { [INFO] [stdout] | --------- previous definition of the value `main` here [INFO] [stdout] ... [INFO] [stdout] 74 | fn main() { [INFO] [stdout] | ^^^^^^^^^ `main` redefined here [INFO] [stdout] | [INFO] [stdout] = note: `main` must be defined only once in the value namespace of this module [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0428`. [INFO] [stdout] [INFO] [stdout] warning: `...` range patterns are deprecated [INFO] [stdout] --> examples/match.rs:46:10 [INFO] [stdout] | [INFO] [stdout] 46 | 4...7 => println!("In between 4...7: {}", a), [INFO] [stdout] | ^^^ help: use `..=` for an inclusive range [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `...` range patterns are deprecated [INFO] [stdout] --> examples/match.rs:61:15 [INFO] [stdout] | [INFO] [stdout] 61 | n @ 1 ... 10 => println!("Between 1 to 10 : {}", n), [INFO] [stdout] | ^^^ help: use `..=` for an inclusive range [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `...` range patterns are deprecated [INFO] [stdout] --> examples/match.rs:62:16 [INFO] [stdout] | [INFO] [stdout] 62 | n @ 11 ... 20 => println!("Between 11 to 20 : {}", n), [INFO] [stdout] | ^^^ help: use `..=` for an inclusive range [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused doc comment [INFO] [stdout] --> examples/loop.rs:30:5 [INFO] [stdout] | [INFO] [stdout] 30 | / /** [INFO] [stdout] 31 | | * Break [INFO] [stdout] 32 | | **/ [INFO] [stdout] | |________^ [INFO] [stdout] 33 | let mut x = 0; [INFO] [stdout] | -------------- rustdoc does not generate documentation for statements [INFO] [stdout] | [INFO] [stdout] = help: use `/* */` for a plain comment [INFO] [stdout] = note: `#[warn(unused_doc_comments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused doc comment [INFO] [stdout] --> examples/loop.rs:65:5 [INFO] [stdout] | [INFO] [stdout] 65 | / /** [INFO] [stdout] 66 | | * Continue [INFO] [stdout] 67 | | **/ [INFO] [stdout] | |________^ [INFO] [stdout] 68 | / for i in 1..20 { [INFO] [stdout] 69 | | if i == 2 { [INFO] [stdout] 70 | | continue; [INFO] [stdout] ... | [INFO] [stdout] 73 | | } [INFO] [stdout] | |_____- rustdoc does not generate documentation for expressions [INFO] [stdout] | [INFO] [stdout] = help: use `/* */` for a plain comment [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable statement [INFO] [stdout] --> examples/loop.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 3 | / loop { [INFO] [stdout] 4 | | println!("Forever"); [INFO] [stdout] 5 | | } [INFO] [stdout] | |_____- any code following this expression is unreachable [INFO] [stdout] ... [INFO] [stdout] 8 | let mut count = 5; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ unreachable statement [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> examples/owenership_borrowing.rs:5:9 [INFO] [stdout] | [INFO] [stdout] 5 | let x = 1; // x is owener of one and it stores in stack [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> examples/owenership_borrowing.rs:8:9 [INFO] [stdout] | [INFO] [stdout] 8 | let y = s; // moved refrence s owenership to y [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0382]: borrow of moved value: `s` [INFO] [stdout] --> examples/owenership_borrowing.rs:10:20 [INFO] [stdout] | [INFO] [stdout] 7 | let s = String::from("String"); [INFO] [stdout] | - move occurs because `s` has type `String`, which does not implement the `Copy` trait [INFO] [stdout] 8 | let y = s; // moved refrence s owenership to y [INFO] [stdout] | - value moved here [INFO] [stdout] 9 | // NOTE: only one reference can own one pice of data [INFO] [stdout] 10 | println!("{}", s); [INFO] [stdout] | ^ value borrowed here after move [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] help: consider cloning the value if the performance cost is acceptable [INFO] [stdout] | [INFO] [stdout] 8 | let y = s.clone(); // moved refrence s owenership to y [INFO] [stdout] | ++++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `learn_rust` (example "struct") due to 1 previous error [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] Some errors have detailed explanations: E0382, E0428. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0382`. [INFO] [stdout] [INFO] [stdout] warning: value assigned to `x` is never read [INFO] [stdout] --> examples/var.rs:7:13 [INFO] [stdout] | [INFO] [stdout] 7 | let mut x = 5; [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `learn_rust` (example "owenership_borrowing") due to 4 previous errors; 2 warnings emitted [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/main.rs:2:10 [INFO] [stdout] | [INFO] [stdout] 2 | struct A(i32); [INFO] [stdout] | - ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing this field [INFO] [stdout] = note: `A` has derived impls for the traits `Clone` and `Debug`, but these are 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/main.rs:4:10 [INFO] [stdout] | [INFO] [stdout] 4 | struct B(f32); [INFO] [stdout] | - ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing this field [INFO] [stdout] = note: `B` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused doc comment [INFO] [stdout] --> examples/hash_map.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | / /** [INFO] [stdout] 5 | | * Example 1 [INFO] [stdout] 6 | | * Simple hash map [INFO] [stdout] 7 | | * Insert value in HashMap and print that [INFO] [stdout] 8 | | **/ [INFO] [stdout] | |________^ [INFO] [stdout] 9 | let mut hm = HashMap::new(); [INFO] [stdout] | ---------------------------- rustdoc does not generate documentation for statements [INFO] [stdout] | [INFO] [stdout] = help: use `/* */` for a plain comment [INFO] [stdout] = note: `#[warn(unused_doc_comments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> examples/enum_vector.rs:3:11 [INFO] [stdout] | [INFO] [stdout] 3 | Float(f64), [INFO] [stdout] | ----- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `Example` 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] 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] 3 - Float(f64), [INFO] [stdout] 3 + Float(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> examples/enum_vector.rs:4:9 [INFO] [stdout] | [INFO] [stdout] 4 | Int(i32), [INFO] [stdout] | --- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `Example` 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] 4 - Int(i32), [INFO] [stdout] 4 + Int(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> examples/enum_vector.rs:5:10 [INFO] [stdout] | [INFO] [stdout] 5 | Test(String), [INFO] [stdout] | ---- ^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `Example` 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] 5 - Test(String), [INFO] [stdout] 5 + Test(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "21dfaf6c3238b8c113ed3cb158de789bbc2374e670b83a576ce3d29edacef0e4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "21dfaf6c3238b8c113ed3cb158de789bbc2374e670b83a576ce3d29edacef0e4", kill_on_drop: false }` [INFO] [stdout] 21dfaf6c3238b8c113ed3cb158de789bbc2374e670b83a576ce3d29edacef0e4