[INFO] cloning repository https://github.com/ryanthegentry/Rustlings [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ryanthegentry/Rustlings" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fryanthegentry%2FRustlings", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fryanthegentry%2FRustlings'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 3d77f264101a35c4fea194e0253e4ecad2ccb3c0 [INFO] checking ryanthegentry/Rustlings against try#8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346 for pr-86194 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fryanthegentry%2FRustlings" "/workspace/builds/worker-10/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/ryanthegentry/Rustlings on toolchain 8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/ryanthegentry/Rustlings [INFO] finished tweaking git repo https://github.com/ryanthegentry/Rustlings [INFO] tweaked toml for git repo https://github.com/ryanthegentry/Rustlings written to /workspace/builds/worker-10/source/Cargo.toml [INFO] crate git repo https://github.com/ryanthegentry/Rustlings already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] dc74ab30578a42b9353c95b08efb909bc000925b990f07a09e3b9f3c8b4b0b66 [INFO] running `Command { std: "docker" "start" "-a" "dc74ab30578a42b9353c95b08efb909bc000925b990f07a09e3b9f3c8b4b0b66", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "dc74ab30578a42b9353c95b08efb909bc000925b990f07a09e3b9f3c8b4b0b66", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "dc74ab30578a42b9353c95b08efb909bc000925b990f07a09e3b9f3c8b4b0b66", kill_on_drop: false }` [INFO] [stdout] dc74ab30578a42b9353c95b08efb909bc000925b990f07a09e3b9f3c8b4b0b66 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 2ef3922a3b8e287ae83c7394de86be901ec9e0d6db196427c237057a17645e60 [INFO] running `Command { std: "docker" "start" "-a" "2ef3922a3b8e287ae83c7394de86be901ec9e0d6db196427c237057a17645e60", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling syn v1.0.17 [INFO] [stderr] Compiling ryu v1.0.3 [INFO] [stderr] Checking itoa v0.4.5 [INFO] [stderr] Compiling escargot v0.5.0 [INFO] [stderr] Checking tests_intro v0.1.0 (/opt/rustwide/workdir/Writing Automated Tests/Tests/Intro) [INFO] [stderr] Checking errorsn v0.1.0 (/opt/rustwide/workdir/Recoverable and Unrecoverable Errors/Error Handling/Multiple Errors) [INFO] [stderr] Checking calculate_price v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Variables and Functions Test/Calculate Price) [INFO] [stderr] Checking testing_task v0.1.0 (/opt/rustwide/workdir/Writing Automated Tests/Tests/Testing Task) [INFO] [stderr] Checking result1 v0.1.0 (/opt/rustwide/workdir/Recoverable and Unrecoverable Errors/Error Handling/Result) [INFO] [stderr] Checking iterators4 v0.1.0 (/opt/rustwide/workdir/Iterators and Closures/Standard Library Types/Factorial) [INFO] [stderr] Checking iterator3 v0.1.0 (/opt/rustwide/workdir/Iterators and Closures/Standard Library Types/Iterator) [INFO] [stderr] Checking returning_result v0.1.0 (/opt/rustwide/workdir/Recoverable and Unrecoverable Errors/Error Handling/Returning Result) [INFO] [stderr] Checking if_task v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/If/If Task) [INFO] [stderr] Checking times_two_tests v0.1.0 (/opt/rustwide/workdir/Writing Automated Tests/Tests Test/Times Two Tests) [INFO] [stderr] Checking matching_result v0.1.0 (/opt/rustwide/workdir/Recoverable and Unrecoverable Errors/Error Handling/Matching Result) [INFO] [stderr] Checking type_annotation_of_a_parameter v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Functions/Type Annotation of a Parameter) [INFO] [stderr] Checking shadowing v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Variables/Shadowing) [INFO] [stderr] Checking shared_state_concurrency v0.1.0 (/opt/rustwide/workdir/Iterators and Closures/Standard Library Types/Shared-State Concurrency) [INFO] [stderr] Checking string_slice v0.1.0 (/opt/rustwide/workdir/Common Collections/Strings/String Slice) [INFO] [stderr] Checking assert v0.1.0 (/opt/rustwide/workdir/Writing Automated Tests/Tests/Assert) [INFO] [stderr] Checking returning_a_string v0.1.0 (/opt/rustwide/workdir/Common Collections/Strings/Returning a String) [INFO] [stderr] Checking extensible_concurrency_with_the_sync_and_send_traits v0.1.0 (/opt/rustwide/workdir/Fearless Concurrency/Threads/Extensible Concurrency with the Sync and Send Traits) [INFO] [stderr] Checking generic_data_types v0.1.0 (/opt/rustwide/workdir/Recoverable and Unrecoverable Errors/Error Handling/Generic Data Types) [INFO] [stderr] Checking charcaters v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Data Types/Characters) [INFO] [stderr] Checking differences_between_variables_and_constants v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Variables/Differences Between Variables and Constants) [INFO] [stderr] Checking scalar_types v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Data Types/Scalar Types) [INFO] [stderr] Checking arrays v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Data Types/Arrays) [INFO] [stderr] Checking strings_intro v0.1.0 (/opt/rustwide/workdir/Common Collections/Strings/Intro) [INFO] [stderr] Checking variables_intro v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Variables/Intro) [INFO] [stderr] Checking recoverable_errors_with_result v0.1.0 (/opt/rustwide/workdir/Recoverable and Unrecoverable Errors/Error Handling/Recoverable Errors with Result) [INFO] [stderr] Checking boolean v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Data Types/Boolean) [INFO] [stdout] error: expected identifier, found `?` [INFO] [stdout] --> Recoverable and Unrecoverable Errors/Error Handling/Multiple Errors/src/lib.rs:6:82 [INFO] [stdout] | [INFO] [stdout] 6 | pub fn read_and_validate(b: &mut io::BufRead) -> Result { [INFO] [stdout] | ^ expected identifier [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `errorsn` [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: associated function is never used: `can_hold` [INFO] [stdout] --> Writing Automated Tests/Tests/Intro/src/lib.rs:8:8 [INFO] [stdout] | [INFO] [stdout] 8 | fn can_hold(&self, other: &Rectangle) -> bool { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::cmp::Ordering` [INFO] [stdout] --> Recoverable and Unrecoverable Errors/Error Handling/Result/src/lib.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::cmp::Ordering; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> Iterators and Closures/Standard Library Types/Iterator/src/lib.rs:15:34 [INFO] [stdout] | [INFO] [stdout] 15 | pub fn divide(a: i32, b: i32) -> Result { [INFO] [stdout] | ------ ^^^^^^^^^^^^^^^^^^^^^^^^^^ expected enum `Result`, found `()` [INFO] [stdout] | | [INFO] [stdout] | implicitly returns `()` as its body has no tail or `return` expression [INFO] [stdout] | [INFO] [stdout] = note: expected enum `Result` [INFO] [stdout] found unit type `()` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0308`. [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::error::Error` [INFO] [stdout] --> Recoverable and Unrecoverable Errors/Error Handling/Returning Result/src/lib.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::error::Error; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0369]: cannot multiply `Result` by `{integer}` [INFO] [stdout] --> Recoverable and Unrecoverable Errors/Error Handling/Matching Result/src/lib.rs:8:12 [INFO] [stdout] | [INFO] [stdout] 8 | Ok(qty * cost_per_item + processing_fee) [INFO] [stdout] | --- ^ ------------- {integer} [INFO] [stdout] | | [INFO] [stdout] | Result [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0369`. [INFO] [stdout] [INFO] [stdout] error[E0425]: cannot find value `x` in this scope [INFO] [stdout] --> Iterators and Closures/Standard Library Types/Iterator/src/lib.rs:30:36 [INFO] [stdout] | [INFO] [stdout] 30 | assert_eq!(format!("{:?}", x), "Ok([1, 11, 1426, 3])"); [INFO] [stdout] | ^ not found in this scope [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0425]: cannot find value `x` in this scope [INFO] [stdout] --> Iterators and Closures/Standard Library Types/Iterator/src/lib.rs:37:36 [INFO] [stdout] | [INFO] [stdout] 37 | assert_eq!(format!("{:?}", x), "[Ok(1), Ok(11), Ok(1426), Ok(3)]"); [INFO] [stdout] | ^ not found in this scope [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: expected expression, found keyword `type` [INFO] [stdout] --> Common Programming Concepts/Data Types/Arrays/src/main.rs:2:13 [INFO] [stdout] | [INFO] [stdout] 2 | let a = type here; [INFO] [stdout] | ^^^^ expected expression [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: expected type, found `)` [INFO] [stdout] --> Common Programming Concepts/Functions/Type Annotation of a Parameter/src/main.rs:5:51 [INFO] [stdout] | [INFO] [stdout] 5 | fn call_me(num:/*insert the type annotation here*/) { [INFO] [stdout] | ^ expected type [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> Iterators and Closures/Standard Library Types/Factorial/src/lib.rs:1:31 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn factorial(num: u64) -> u64 { [INFO] [stdout] | --------- ^^^ expected `u64`, found `()` [INFO] [stdout] | | [INFO] [stdout] | implicitly returns `()` as its body has no tail or `return` expression [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0308`. [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::cmp::Ordering` [INFO] [stdout] --> Common Programming Concepts/Variables and Functions Test/Calculate Price/src/lib.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::cmp::Ordering; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::cmp::Ordering` [INFO] [stdout] --> Common Programming Concepts/Variables and Functions Test/Calculate Price/src/lib.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::cmp::Ordering; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> Common Programming Concepts/If/If Task/src/lib.rs:1:34 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn bigger(a: i32, b: i32) -> i32 { [INFO] [stdout] | ------ ^^^ expected `i32`, found `()` [INFO] [stdout] | | [INFO] [stdout] | implicitly returns `()` as its body has no tail or `return` expression [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0308`. [INFO] [stdout] [INFO] [stdout] error[E0425]: cannot find value `num` in this scope [INFO] [stdout] --> Common Programming Concepts/Functions/Type Annotation of a Parameter/src/main.rs:6:17 [INFO] [stdout] | [INFO] [stdout] 6 | for i in 0..num { [INFO] [stdout] | ^^^ not found in this scope [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 2 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0425`. [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> Common Collections/Strings/String Slice/src/main.rs:3:70 [INFO] [stdout] | [INFO] [stdout] 3 | if is_a_color_word(/*coerce the String into a string slice here*/word) { [INFO] [stdout] | ^^^^ [INFO] [stdout] | | [INFO] [stdout] | expected `&str`, found struct `String` [INFO] [stdout] | help: consider borrowing here: `&word` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0308`. [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> Iterators and Closures/Standard Library Types/Iterator/src/lib.rs:15:34 [INFO] [stdout] | [INFO] [stdout] 15 | pub fn divide(a: i32, b: i32) -> Result { [INFO] [stdout] | ------ ^^^^^^^^^^^^^^^^^^^^^^^^^^ expected enum `Result`, found `()` [INFO] [stdout] | | [INFO] [stdout] | implicitly returns `()` as its body has no tail or `return` expression [INFO] [stdout] | [INFO] [stdout] = note: expected enum `Result` [INFO] [stdout] found unit type `()` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 3 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0308, E0425. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0308`. [INFO] [stdout] [INFO] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "2ef3922a3b8e287ae83c7394de86be901ec9e0d6db196427c237057a17645e60", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2ef3922a3b8e287ae83c7394de86be901ec9e0d6db196427c237057a17645e60", kill_on_drop: false }` [INFO] [stdout] 2ef3922a3b8e287ae83c7394de86be901ec9e0d6db196427c237057a17645e60