[INFO] cloning repository https://github.com/LearningByExample/rustlings [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LearningByExample/rustlings" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLearningByExample%2Frustlings", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLearningByExample%2Frustlings'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] f8f12937fc940a75c229bd128b517cd1649cb77b [INFO] checking LearningByExample/rustlings against try#dd2d87b6cc31907ae305875eb6be399783dc0256 for pr-143929 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLearningByExample%2Frustlings" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/LearningByExample/rustlings [INFO] finished tweaking git repo https://github.com/LearningByExample/rustlings [INFO] tweaked toml for git repo https://github.com/LearningByExample/rustlings written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/LearningByExample/rustlings on toolchain dd2d87b6cc31907ae305875eb6be399783dc0256 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dd2d87b6cc31907ae305875eb6be399783dc0256" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/LearningByExample/rustlings 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" "+dd2d87b6cc31907ae305875eb6be399783dc0256" "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 [ERROR] error running command: no output for 300 seconds [INFO] checking LearningByExample/rustlings against try#dd2d87b6cc31907ae305875eb6be399783dc0256 for pr-143929 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLearningByExample%2Frustlings" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/LearningByExample/rustlings [INFO] finished tweaking git repo https://github.com/LearningByExample/rustlings [INFO] tweaked toml for git repo https://github.com/LearningByExample/rustlings written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/LearningByExample/rustlings on toolchain dd2d87b6cc31907ae305875eb6be399783dc0256 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dd2d87b6cc31907ae305875eb6be399783dc0256" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/LearningByExample/rustlings 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" "+dd2d87b6cc31907ae305875eb6be399783dc0256" "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] [stderr] Downloading crates ... [INFO] [stderr] Downloaded escargot v0.5.0 [INFO] [stderr] Downloaded syn v1.0.32 [INFO] [stderr] Downloaded serde v1.0.113 [INFO] [stderr] Downloaded serde_json v1.0.55 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+dd2d87b6cc31907ae305875eb6be399783dc0256" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 074ffc580551d5fb5722d79929caba8f18bddbe3daf0b62146d6496a15cabfe6 [INFO] running `Command { std: "docker" "start" "-a" "074ffc580551d5fb5722d79929caba8f18bddbe3daf0b62146d6496a15cabfe6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "074ffc580551d5fb5722d79929caba8f18bddbe3daf0b62146d6496a15cabfe6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "074ffc580551d5fb5722d79929caba8f18bddbe3daf0b62146d6496a15cabfe6", kill_on_drop: false }` [INFO] [stdout] 074ffc580551d5fb5722d79929caba8f18bddbe3daf0b62146d6496a15cabfe6 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+dd2d87b6cc31907ae305875eb6be399783dc0256" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 5dfe403a61944720a9bd455f0f34bc36281c683a88f49e8da5dd1ed35d2351ea [INFO] running `Command { std: "docker" "start" "-a" "5dfe403a61944720a9bd455f0f34bc36281c683a88f49e8da5dd1ed35d2351ea", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.18 [INFO] [stderr] Compiling unicode-xid v0.2.0 [INFO] [stderr] Compiling syn v1.0.32 [INFO] [stderr] Compiling serde_derive v1.0.113 [INFO] [stderr] Compiling ryu v1.0.5 [INFO] [stderr] Compiling serde v1.0.113 [INFO] [stderr] Compiling serde_json v1.0.55 [INFO] [stderr] Compiling log v0.4.8 [INFO] [stderr] Checking cfg-if v0.1.10 [INFO] [stderr] Checking itoa v0.4.6 [INFO] [stderr] Compiling escargot v0.5.0 [INFO] [stderr] Checking lazy_static v1.4.0 [INFO] [stderr] Checking tests_intro v0.1.0 (/opt/rustwide/workdir/Writing Automated Tests/Tests/Intro) [INFO] [stderr] Checking times_two_tests v0.1.0 (/opt/rustwide/workdir/Writing Automated Tests/Tests Test/Times Two Tests) [INFO] [stderr] Checking errorsn v0.1.0 (/opt/rustwide/workdir/Recoverable and Unrecoverable Errors/Error Handling/Multiple Errors) [INFO] [stderr] Checking iterator3 v0.1.0 (/opt/rustwide/workdir/Iterators and Closures/Standard Library Types/Iterator) [INFO] [stderr] Checking iterators4 v0.1.0 (/opt/rustwide/workdir/Iterators and Closures/Standard Library Types/Factorial) [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> Recoverable and Unrecoverable Errors/Error Handling/Multiple Errors/src/lib.rs:6:34 [INFO] [stdout] | [INFO] [stdout] 6 | pub fn read_and_validate(b: &mut io::BufRead) -> Result> { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 6 | pub fn read_and_validate(b: &mut dyn io::BufRead) -> Result> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Rectangle` is never constructed [INFO] [stdout] --> Writing Automated Tests/Tests/Intro/src/lib.rs:2:8 [INFO] [stdout] | [INFO] [stdout] 2 | struct Rectangle { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `can_hold` is never used [INFO] [stdout] --> Writing Automated Tests/Tests/Intro/src/lib.rs:8:8 [INFO] [stdout] | [INFO] [stdout] 7 | impl Rectangle { [INFO] [stdout] | -------------- method in this implementation [INFO] [stdout] 8 | fn can_hold(&self, other: &Rectangle) -> bool { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking calculate_price v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Variables and Functions Test/Calculate Price) [INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string() [INFO] [stdout] --> Recoverable and Unrecoverable Errors/Error Handling/Multiple Errors/src/lib.rs:43:49 [INFO] [stdout] | [INFO] [stdout] 43 | f.write_str((self as &dyn error::Error).description()) [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking testing_task v0.1.0 (/opt/rustwide/workdir/Writing Automated Tests/Tests/Testing Task) [INFO] [stderr] Checking if_task v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/If/If Task) [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] [stderr] Checking returning_result v0.1.0 (/opt/rustwide/workdir/Recoverable and Unrecoverable Errors/Error Handling/Returning Result) [INFO] [stderr] Checking result1 v0.1.0 (/opt/rustwide/workdir/Recoverable and Unrecoverable Errors/Error Handling/Result) [INFO] [stderr] Checking matching_result v0.1.0 (/opt/rustwide/workdir/Recoverable and Unrecoverable Errors/Error Handling/Matching Result) [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: unnecessary trailing semicolon [INFO] [stdout] --> Recoverable and Unrecoverable Errors/Error Handling/Matching Result/src/lib.rs:6:78 [INFO] [stdout] | [INFO] [stdout] 6 | /*this is the short way, but you can just match the result of the parse*/; [INFO] [stdout] | ^ help: remove this semicolon [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(redundant_semicolons)]` 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: unused import: `std::error` [INFO] [stdout] --> Recoverable and Unrecoverable Errors/Error Handling/Multiple Errors/tests/tests.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::error; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking arrays v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Data Types/Arrays) [INFO] [stderr] Checking threads_intro v0.1.0 (/opt/rustwide/workdir/Fearless Concurrency/Threads/Intro) [INFO] [stderr] Checking return_a_value v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Functions/Return a Value) [INFO] [stderr] Checking macro_arms v0.1.0 (/opt/rustwide/workdir/Modules and Macros/Macros/Macro Arms) [INFO] [stderr] Checking calling_a_macro v0.1.0 (/opt/rustwide/workdir/Modules and Macros/Macros/Calling a Macro) [INFO] [stderr] Checking matching_result_2 v0.1.0 (/opt/rustwide/workdir/Recoverable and Unrecoverable Errors/Error Handling/Matching Result 2) [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 shared_state_concurrency v0.1.0 (/opt/rustwide/workdir/Iterators and Closures/Standard Library Types/Shared-State Concurrency) [INFO] [stderr] Checking variables1 v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Variables/Variables 1) [INFO] [stderr] Checking compound_types v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Data Types/Compound Types) [INFO] [stderr] Checking adding_custom_failure_messages v0.1.0 (/opt/rustwide/workdir/Writing Automated Tests/Tests/Adding Custom Failure Messages) [INFO] [stderr] Checking charcaters v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Data Types/Characters) [INFO] [stderr] Checking defining_a_function v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Functions/Defining a Function) [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> Recoverable and Unrecoverable Errors/Error Handling/Matching Result 2/src/main.rs:9:26 [INFO] [stdout] | [INFO] [stdout] 9 | Err(e) => panic!(e), [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(non_fmt_panics)]` on by default [INFO] [stdout] help: add a "{}" format string to `Display` the message [INFO] [stdout] | [INFO] [stdout] 9 | Err(e) => panic!("{}", e), [INFO] [stdout] | +++++ [INFO] [stdout] help: or use std::panic::panic_any instead [INFO] [stdout] | [INFO] [stdout] 9 - Err(e) => panic!(e), [INFO] [stdout] 9 + Err(e) => std::panic::panic_any(e), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking stdlib_intro v0.1.0 (/opt/rustwide/workdir/Iterators and Closures/Standard Library Types/Intro) [INFO] [stderr] Checking macros3 v0.1.0 (/opt/rustwide/workdir/Modules and Macros/Macros/Outside of Module) [INFO] [stderr] Checking modules_intro v0.1.0 (/opt/rustwide/workdir/Modules and Macros/Modules/Intro) [INFO] [stderr] Checking about v0.1.0 (/opt/rustwide/workdir/Introduction/Getting started/About) [INFO] [stderr] Checking repetition_with_loops v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/If/Repetition with Loops) [INFO] [stderr] Checking return_type v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Functions/Return Type) [INFO] [stderr] Checking installation v0.1.0 (/opt/rustwide/workdir/Introduction/Getting started/Installation) [INFO] [stderr] Checking macro_test v0.1.0 (/opt/rustwide/workdir/Modules and Macros/Macros and Modules Test/Test Task) [INFO] [stderr] Checking variables2 v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Variables/Variables 2) [INFO] [stderr] Checking variables_intro v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Variables/Intro) [INFO] [stderr] Checking strings_intro v0.1.0 (/opt/rustwide/workdir/Common Collections/Strings/Intro) [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 passing_an_argument v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Functions/Passing an Argument) [INFO] [stderr] Checking generic_data_types v0.1.0 (/opt/rustwide/workdir/Recoverable and Unrecoverable Errors/Error Handling/Generic Data Types) [INFO] [stderr] Checking variables3 v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Variables/Variables 3) [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 using_message_passing_to_transfer_data_between_threads v0.1.0 (/opt/rustwide/workdir/Fearless Concurrency/Threads/Using Message Passing to Transfer Data Between Threads) [INFO] [stderr] Checking macros2 v0.1.0 (/opt/rustwide/workdir/Modules and Macros/Macros/Declaring a Macro) [INFO] [stderr] Checking assert_eq v0.1.0 (/opt/rustwide/workdir/Writing Automated Tests/Tests/Assert_Eq) [INFO] [stderr] Checking move_semantics_intro v0.1.0 (/opt/rustwide/workdir/Understanding Ownership/Move Semantics/Intro) [INFO] [stderr] Checking boolean v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Data Types/Boolean) [INFO] [stderr] Checking separating_modules_into_different_files v0.1.0 (/opt/rustwide/workdir/Modules and Macros/Modules/Separating Modules into Different Files) [INFO] [stderr] Checking the_slice_type v0.1.0 (/opt/rustwide/workdir/Understanding Ownership/Move Semantics/The Slice Type) [INFO] [stderr] Checking paths_for_referring_to_an_item_in_the_module_tree v0.1.0 (/opt/rustwide/workdir/Modules and Macros/Modules/Paths for Referring to an Item in the Module Tree) [INFO] [stderr] Checking macros_intro v0.1.0 (/opt/rustwide/workdir/Modules and Macros/Macros/Intro) [INFO] [stdout] error[E0412]: cannot find type `Vect` in this scope [INFO] [stdout] --> Iterators and Closures/Standard Library Types/Iterator/src/lib.rs:37:50 [INFO] [stdout] | [INFO] [stdout] 37 | let x= division_results.collect::,DivisionError>>(); [INFO] [stdout] | ^^^^ help: a struct with a similar name exists: `Vec` [INFO] [stdout] --> /rustc/dd2d87b6cc31907ae305875eb6be399783dc0256/library/alloc/src/vec/mod.rs:414:1 [INFO] [stdout] | [INFO] [stdout] = note: similarly named struct `Vec` defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking error_handling_intro v0.1.0 (/opt/rustwide/workdir/Recoverable and Unrecoverable Errors/Error Handling/Intro) [INFO] [stderr] Checking references_and_borrowing v0.1.0 (/opt/rustwide/workdir/Understanding Ownership/Move Semantics/References and Borrowing) [INFO] [stderr] Checking borrow v0.1.0 (/opt/rustwide/workdir/Understanding Ownership/Move Semantics/Borrow) [INFO] [stderr] Checking scalar_types v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Data Types/Scalar Types) [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] For more information about this error, try `rustc --explain E0412`. [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> Recoverable and Unrecoverable Errors/Error Handling/Multiple Errors/src/lib.rs:6:34 [INFO] [stdout] | [INFO] [stdout] 6 | pub fn read_and_validate(b: &mut io::BufRead) -> Result> { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 6 | pub fn read_and_validate(b: &mut dyn io::BufRead) -> Result> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking variables4 v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Variables/Variables 4) [INFO] [stderr] Checking else_if v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/If/else if) [INFO] [stderr] error: could not compile `iterator3` (lib test) due to 1 previous error [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: unused imports: `BorrowMut` and `Borrow` [INFO] [stdout] --> Understanding Ownership/Move Semantics/Borrow/src/main.rs:1:19 [INFO] [stdout] | [INFO] [stdout] 1 | use std::borrow::{Borrow, BorrowMut}; [INFO] [stdout] | ^^^^^^ ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string() [INFO] [stdout] --> Recoverable and Unrecoverable Errors/Error Handling/Multiple Errors/src/lib.rs:43:49 [INFO] [stdout] | [INFO] [stdout] 43 | f.write_str((self as &dyn error::Error).description()) [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "5dfe403a61944720a9bd455f0f34bc36281c683a88f49e8da5dd1ed35d2351ea", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5dfe403a61944720a9bd455f0f34bc36281c683a88f49e8da5dd1ed35d2351ea", kill_on_drop: false }` [INFO] [stdout] 5dfe403a61944720a9bd455f0f34bc36281c683a88f49e8da5dd1ed35d2351ea