[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/f8f12937fc940a75c229bd128b517cd1649cb77b against master#a26e97be8826d408309fffbd8168362365719f50 for pr-136776
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLearningByExample%2Frustlings" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LearningByExample/rustlings on toolchain a26e97be8826d408309fffbd8168362365719f50
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a26e97be8826d408309fffbd8168362365719f50" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-6-tc1/source/Cargo.toml
[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" "+a26e97be8826d408309fffbd8168362365719f50" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded escargot v0.5.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+a26e97be8826d408309fffbd8168362365719f50" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0ddd1e25155fe92640adad07a19f9658dc7f07312005253c661b438541f56e63
[INFO] running `Command { std: "docker" "start" "-a" "0ddd1e25155fe92640adad07a19f9658dc7f07312005253c661b438541f56e63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0ddd1e25155fe92640adad07a19f9658dc7f07312005253c661b438541f56e63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ddd1e25155fe92640adad07a19f9658dc7f07312005253c661b438541f56e63", kill_on_drop: false }`
[INFO] [stdout] 0ddd1e25155fe92640adad07a19f9658dc7f07312005253c661b438541f56e63
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+a26e97be8826d408309fffbd8168362365719f50" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 64e9875bd4bc822a7bec4afc73fcbfcef7e88dcad16a367ae20bf843aa737513
[INFO] running `Command { std: "docker" "start" "-a" "64e9875bd4bc822a7bec4afc73fcbfcef7e88dcad16a367ae20bf843aa737513", 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 log v0.4.8
[INFO] [stderr]    Compiling serde_json v1.0.55
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]    Compiling escargot v0.5.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[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 errorsn v0.1.0 (/opt/rustwide/workdir/Recoverable and Unrecoverable Errors/Error Handling/Multiple Errors)
[INFO] [stderr]     Checking matching_result v0.1.0 (/opt/rustwide/workdir/Recoverable and Unrecoverable Errors/Error Handling/Matching Result)
[INFO] [stderr]     Checking times_two_tests v0.1.0 (/opt/rustwide/workdir/Writing Automated Tests/Tests Test/Times Two Tests)
[INFO] [stderr]     Checking result1 v0.1.0 (/opt/rustwide/workdir/Recoverable and Unrecoverable Errors/Error Handling/Result)
[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: 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<PositiveNonzeroInteger, Box<dyn error::Error>> {
[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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[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<PositiveNonzeroInteger, Box<dyn error::Error>> {
[INFO] [stdout]   |                                  +++
[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 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] [stderr]     Checking calculate_price v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Variables and Functions Test/Calculate Price)
[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 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] [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: 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] [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::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::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 return_a_value v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Functions/Return a Value)
[INFO] [stderr]     Checking macros_intro v0.1.0 (/opt/rustwide/workdir/Modules and Macros/Macros/Intro)
[INFO] [stderr]     Checking variables4 v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Variables/Variables 4)
[INFO] [stderr]     Checking bringing_paths_into_scope_with_the_use_keyword v0.1.0 (/opt/rustwide/workdir/Modules and Macros/Modules/Bringing Paths into Scope with the use Keyword)
[INFO] [stderr]     Checking boolean v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Data Types/Boolean)
[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 shared_state_concurrency v0.1.0 (/opt/rustwide/workdir/Iterators and Closures/Standard Library Types/Shared-State Concurrency)
[INFO] [stderr]     Checking threads_intro v0.1.0 (/opt/rustwide/workdir/Fearless Concurrency/Threads/Intro)
[INFO] [stderr]     Checking adding_custom_failure_messages v0.1.0 (/opt/rustwide/workdir/Writing Automated Tests/Tests/Adding Custom Failure Messages)
[INFO] [stderr]     Checking matching_result_2 v0.1.0 (/opt/rustwide/workdir/Recoverable and Unrecoverable Errors/Error Handling/Matching Result 2)
[INFO] [stderr]     Checking macros2 v0.1.0 (/opt/rustwide/workdir/Modules and Macros/Macros/Declaring a Macro)
[INFO] [stderr]     Checking macros3 v0.1.0 (/opt/rustwide/workdir/Modules and Macros/Macros/Outside of Module)
[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] [stderr]     Checking variables1 v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Variables/Variables 1)
[INFO] [stderr]     Checking variables3 v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Variables/Variables 3)
[INFO] [stderr]     Checking repetition_with_loops v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/If/Repetition with Loops)
[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 the_slice_type v0.1.0 (/opt/rustwide/workdir/Understanding Ownership/Move Semantics/The Slice Type)
[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] [stderr]     Checking functions_intro v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Functions/Intro)
[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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[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) => std::panic::panic_any(e),
[INFO] [stdout]   |                   ~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking statements_and_expressions v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Functions/Statements and Expressions)
[INFO] [stderr]     Checking modules_intro v0.1.0 (/opt/rustwide/workdir/Modules and Macros/Modules/Intro)
[INFO] [stderr]     Checking return_type v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Functions/Return Type)
[INFO] [stderr]     Checking string_slice v0.1.0 (/opt/rustwide/workdir/Common Collections/Strings/String Slice)
[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 passing_an_argument v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Functions/Passing an Argument)
[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<PositiveNonzeroInteger, Box<dyn error::Error>> {
[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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[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<PositiveNonzeroInteger, Box<dyn error::Error>> {
[INFO] [stdout]   |                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking variables_and_mutability v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Variables/Variables and Mutability)
[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] [stderr]     Checking generic_data_types v0.1.0 (/opt/rustwide/workdir/Recoverable and Unrecoverable Errors/Error Handling/Generic Data Types)
[INFO] [stderr]     Checking shadowing v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Variables/Shadowing)
[INFO] [stderr]     Checking installation v0.1.0 (/opt/rustwide/workdir/Introduction/Getting started/Installation)
[INFO] [stderr]     Checking variables_intro v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Variables/Intro)
[INFO] [stderr]     Checking macro_test v0.1.0 (/opt/rustwide/workdir/Modules and Macros/Macros and Modules Test/Test Task)
[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 assert_eq v0.1.0 (/opt/rustwide/workdir/Writing Automated Tests/Tests/Assert_Eq)
[INFO] [stderr]     Checking stdlib_intro v0.1.0 (/opt/rustwide/workdir/Iterators and Closures/Standard Library Types/Intro)
[INFO] [stderr]     Checking assert v0.1.0 (/opt/rustwide/workdir/Writing Automated Tests/Tests/Assert)
[INFO] [stderr]     Checking borrow v0.1.0 (/opt/rustwide/workdir/Understanding Ownership/Move Semantics/Borrow)
[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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[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) => std::panic::panic_any(e),
[INFO] [stdout]   |                   ~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking compound_types v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Data Types/Compound Types)
[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] [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] [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 strings_intro v0.1.0 (/opt/rustwide/workdir/Common Collections/Strings/Intro)
[INFO] [stderr]     Checking defining_a_function v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Functions/Defining a Function)
[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 separating_modules_into_different_files v0.1.0 (/opt/rustwide/workdir/Modules and Macros/Modules/Separating Modules into Different Files)
[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] [stderr]     Checking variables2 v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Variables/Variables 2)
[INFO] [stderr]     Checking arrays v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Data Types/Arrays)
[INFO] [stderr]     Checking else_if v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/If/else if)
[INFO] [stderr]     Checking charcaters v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Data Types/Characters)
[INFO] [stderr]     Checking if_intro v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/If/Intro)
[INFO] [stderr]     Checking about v0.1.0 (/opt/rustwide/workdir/Introduction/Getting started/About)
[INFO] [stderr]     Checking references_and_borrowing v0.1.0 (/opt/rustwide/workdir/Understanding Ownership/Move Semantics/References and Borrowing)
[INFO] [stderr]     Checking returning_a_string v0.1.0 (/opt/rustwide/workdir/Common Collections/Strings/Returning a String)
[INFO] [stderr]     Checking error_handling_intro v0.1.0 (/opt/rustwide/workdir/Recoverable and Unrecoverable Errors/Error Handling/Intro)
[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] [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::<Result<Vect<i32>,DivisionError>>();
[INFO] [stdout]    |                                                  ^^^^ help: a struct with a similar name exists: `Vec`
[INFO] [stdout]   --> /rustc/a26e97be8826d408309fffbd8168362365719f50/library/alloc/src/vec/mod.rs:397:1
[INFO] [stdout]    |
[INFO] [stdout]    = note: similarly named struct `Vec` defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking scalar_types v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Data Types/Scalar Types)
[INFO] [stdout] For more information about this error, try `rustc --explain E0412`.
[INFO] [stdout] 
[INFO] [stderr]     Checking move_semantics_intro v0.1.0 (/opt/rustwide/workdir/Understanding Ownership/Move Semantics/Intro)
[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] running `Command { std: "docker" "inspect" "64e9875bd4bc822a7bec4afc73fcbfcef7e88dcad16a367ae20bf843aa737513", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64e9875bd4bc822a7bec4afc73fcbfcef7e88dcad16a367ae20bf843aa737513", kill_on_drop: false }`
[INFO] [stdout] 64e9875bd4bc822a7bec4afc73fcbfcef7e88dcad16a367ae20bf843aa737513
