[INFO] cloning repository https://github.com/austinkaylor-eaton/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/austinkaylor-eaton/Learn-Rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faustinkaylor-eaton%2FLearn-Rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faustinkaylor-eaton%2FLearn-Rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] beaebfb4eaf8016f72b2d6d4001f842402a44480
[INFO] checking austinkaylor-eaton/Learn-Rust against try#50f413885985a8b0a0b6ca0766a0aedd45304953 for pr-155657-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faustinkaylor-eaton%2FLearn-Rust" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-5-tc2/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/austinkaylor-eaton/Learn-Rust
[INFO] finished tweaking git repo https://github.com/austinkaylor-eaton/Learn-Rust
[INFO] tweaked toml for git repo https://github.com/austinkaylor-eaton/Learn-Rust written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/austinkaylor-eaton/Learn-Rust on toolchain 50f413885985a8b0a0b6ca0766a0aedd45304953
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+50f413885985a8b0a0b6ca0766a0aedd45304953" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/austinkaylor-eaton/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" "+50f413885985a8b0a0b6ca0766a0aedd45304953" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+50f413885985a8b0a0b6ca0766a0aedd45304953" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 72c3d3ca5c5135546f4080e86cb8f8421373b28164bd9746b1cb56955eb89c2f
[INFO] running `Command { std: "docker" "start" "-a" "72c3d3ca5c5135546f4080e86cb8f8421373b28164bd9746b1cb56955eb89c2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "72c3d3ca5c5135546f4080e86cb8f8421373b28164bd9746b1cb56955eb89c2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72c3d3ca5c5135546f4080e86cb8f8421373b28164bd9746b1cb56955eb89c2f", kill_on_drop: false }`
[INFO] [stdout] 72c3d3ca5c5135546f4080e86cb8f8421373b28164bd9746b1cb56955eb89c2f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+50f413885985a8b0a0b6ca0766a0aedd45304953" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f86bc59e5e15021eb6eb7bdc0b95ccb3b9fcfd292b9048a0ffaa214e3383b01d
[INFO] running `Command { std: "docker" "start" "-a" "f86bc59e5e15021eb6eb7bdc0b95ccb3b9fcfd292b9048a0ffaa214e3383b01d", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling proc-macro2 v1.0.92
[INFO] [stderr]    Compiling unicode-ident v1.0.14
[INFO] [stderr]    Compiling serde v1.0.216
[INFO] [stderr]    Compiling serde_json v1.0.133
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]    Compiling escargot v0.5.13
[INFO] [stderr]     Checking itoa v1.0.14
[INFO] [stderr]     Checking ryu v1.0.18
[INFO] [stderr]     Checking once_cell v1.20.2
[INFO] [stderr]     Checking log v0.4.22
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling libc v0.2.168
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking hello_macro v0.1.0 (/opt/rustwide/workdir/Macros/Procedural Macros/hello_macro)
[INFO] [stderr]     Checking loop_over_vector_with_iterators v0.1.0 (/opt/rustwide/workdir/Standard Library Types/Iterators/Loop Over Vector With Iterators)
[INFO] [stderr]     Checking compare_licenses v0.1.0 (/opt/rustwide/workdir/Generic Types, Traits, and Lifetime/Traits/Compare Licenses)
[INFO] [stderr]     Checking trait_bound_syntax v0.1.0 (/opt/rustwide/workdir/Generic Types, Traits, and Lifetime/Traits/Trait Bound Syntax)
[INFO] [stderr]     Checking loop_over_a_vector v0.1.0 (/opt/rustwide/workdir/Common Collections/Vectors/Loop Over a Vector)
[INFO] [stderr]     Checking advanced_errors_2 v0.1.0 (/opt/rustwide/workdir/Error Handling/Errors Primer/Advanced Errors 2)
[INFO] [stderr]     Checking count_typed_cells v0.1.0 (/opt/rustwide/workdir/Common Collections/Vectors/Count Typed Cells)
[INFO] [stderr]     Checking count_progress v0.1.0 (/opt/rustwide/workdir/Standard Library Types/Iterators/Count Progress)
[INFO] [stderr]     Checking errors6 v0.1.0 (/opt/rustwide/workdir/Error Handling/Errors Primer/Custom Errors)
[INFO] [stderr]     Checking license_it v0.1.0 (/opt/rustwide/workdir/Generic Types, Traits, and Lifetime/Traits/License It)
[INFO] [stderr]     Checking try_from_into v0.1.0 (/opt/rustwide/workdir/Standard Library Types/Type Conversions/Try From Into)
[INFO] [stderr]     Checking vec_trait v0.1.0 (/opt/rustwide/workdir/Generic Types, Traits, and Lifetime/Traits/Vec Trait)
[INFO] [stderr]     Checking string_transformer v0.1.0 (/opt/rustwide/workdir/Common Collections/Strings/String Transformer)
[INFO] [stderr]     Checking capitalize_first v0.1.0 (/opt/rustwide/workdir/Standard Library Types/Iterators/Capitalize first)
[INFO] [stderr]     Checking asref_and_asmut v0.1.0 (/opt/rustwide/workdir/Standard Library Types/Type Conversions/AsRef and AsMut)
[INFO] [stderr]     Checking process_some_strings v0.1.0 (/opt/rustwide/workdir/Common Collections/Strings/Process Some Strings)
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> Error Handling/Errors Primer/Advanced Errors 2/src/lib.rs:49:13
[INFO] [stdout]    |
[INFO] [stdout] 49 |             _ => write!(f, "unhandled error!"),
[INFO] [stdout]    |             ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> Error Handling/Errors Primer/Advanced Errors 2/src/lib.rs:49:13
[INFO] [stdout]    |
[INFO] [stdout] 44 |             NoCity => write!(f, "no city name"),
[INFO] [stdout]    |             ------ matches some of the same values
[INFO] [stdout] 45 |             ParseFloat(e) => write!(f, "error parsing temperature: {}", e),
[INFO] [stdout]    |             ------------- matches some of the same values
[INFO] [stdout] 46 |             Empty => write!(f, "empty input"),
[INFO] [stdout]    |             ----- matches some of the same values
[INFO] [stdout] 47 |             BadLen => write!(f, "incorrect number of fields"),
[INFO] [stdout]    |             ------ matches some of the same values
[INFO] [stdout] 48 |             ParseInt(e) => write!(f, "error parsing year: {}", e),
[INFO] [stdout] 49 |             _ => write!(f, "unhandled error!"),
[INFO] [stdout]    |             ^ ...and 1 other patterns collectively make this unreachable
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking using_as v0.1.0 (/opt/rustwide/workdir/Standard Library Types/Type Conversions/Using As)
[INFO] [stderr]     Checking build_team_scores_table v0.1.0 (/opt/rustwide/workdir/Common Collections/Hashmaps/Build Scores Table)
[INFO] [stderr]     Checking box_task v0.1.0 (/opt/rustwide/workdir/Standard Library Types/Smart Pointers/Box Task)
[INFO] [stderr]     Checking modifying_a_hashmap v0.1.0 (/opt/rustwide/workdir/Common Collections/Hashmaps/More Fruits)
[INFO] [stderr]     Checking generics_in_structs v0.1.0 (/opt/rustwide/workdir/Generic Types, Traits, and Lifetime/Generic Data Types/Generics in Structs)
[INFO] [stderr]     Checking declaring_a_hashmap v0.1.0 (/opt/rustwide/workdir/Common Collections/Hashmaps/Fruits Delivery)
[INFO] [stderr]     Checking combine_traits v0.1.0 (/opt/rustwide/workdir/Generic Types, Traits, and Lifetime/Traits/Combine Traits)
[INFO] [stderr]     Checking trim_a_string v0.1.0 (/opt/rustwide/workdir/Understanding Ownership/The Slice Type/Trim a String)
[INFO] [stderr]     Checking declaring_a_vector v0.1.0 (/opt/rustwide/workdir/Common Collections/Vectors/Create a Vector on Your Own)
[INFO] [stderr]     Checking string_trait v0.1.0 (/opt/rustwide/workdir/Generic Types, Traits, and Lifetime/Traits/String Trait)
[INFO] [stderr]     Checking advanced_errors v0.1.0 (/opt/rustwide/workdir/Error Handling/Errors Primer/Advanced Errors)
[INFO] [stderr]     Checking lamp_with_switchers v0.1.0 (/opt/rustwide/workdir/Standard Library Types/Smart Pointers/Switch the Lamp)
[INFO] [stderr]     Checking from_into v0.1.0 (/opt/rustwide/workdir/Standard Library Types/Type Conversions/From Into)
[INFO] [stderr]     Checking errors5 v0.1.0 (/opt/rustwide/workdir/Error Handling/Errors Primer/Multiple Errors)
[INFO] [stderr]     Checking add_conditions v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Conditions/Add Conditions)
[INFO] [stderr]     Checking fromstr v0.1.0 (/opt/rustwide/workdir/Standard Library Types/Type Conversions/FromStr)
[INFO] [stderr]     Checking use_cow v0.1.0 (/opt/rustwide/workdir/Standard Library Types/Smart Pointers/Use Cow)
[INFO] [stderr]     Checking home_alone v0.1.0 (/opt/rustwide/workdir/Modules/Modules/Home Alone at Day X)
[INFO] [stderr]     Checking workers_in_the_engine v0.1.0 (/opt/rustwide/workdir/Standard Library Types/Smart Pointers/Workers in the Engine)
[INFO] [stderr]     Checking submodules v0.1.0 (/opt/rustwide/workdir/Writing Automated Tests/Running and Organizing Tests/Submodules in Integration Tests)
[INFO] [stderr]     Checking use_option v0.1.0 (/opt/rustwide/workdir/Common Collections/Options/Use Option)
[INFO] [stderr]     Checking iterators4 v0.1.0 (/opt/rustwide/workdir/Standard Library Types/Iterators/Factorial)
[INFO] [stderr]     Checking result1 v0.1.0 (/opt/rustwide/workdir/Error Handling/Errors Primer/Positive Nonzero Integer)
[INFO] [stderr]     Checking if_task v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Conditions/If Task)
[INFO] [stderr]     Checking returning_result v0.1.0 (/opt/rustwide/workdir/Error Handling/Error Handling/Returning Result)
[INFO] [stderr]     Checking calculate_price v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Variables, Functions, and Conditions Test/Calculate Price)
[INFO] [stderr]     Checking optional_value v0.1.0 (/opt/rustwide/workdir/Common Collections/Options/Optional Value)
[INFO] [stderr]     Checking matching_result v0.1.0 (/opt/rustwide/workdir/Error Handling/Error Handling/Matching Result)
[INFO] [stderr]     Checking times_two_tests v0.1.0 (/opt/rustwide/workdir/Writing Automated Tests/Running and Organizing Tests/Times Two Tests)
[INFO] [stderr]     Checking integration_tests v0.1.0 (/opt/rustwide/workdir/Writing Automated Tests/Running and Organizing Tests/Integration Tests)
[INFO] [stderr]     Checking iterator3 v0.1.0 (/opt/rustwide/workdir/Standard Library Types/Iterators/Iterator)
[INFO] [stdout] warning: unused import: `std::num::ParseIntError`
[INFO] [stdout]  --> Error Handling/Errors Primer/Multiple Errors/src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::num::ParseIntError;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str::Matches`
[INFO] [stdout]  --> Error Handling/Errors Primer/Multiple Errors/src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::str::Matches;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::num::ParseIntError`
[INFO] [stdout]  --> Error Handling/Errors Primer/Multiple Errors/src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::num::ParseIntError;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str::Matches`
[INFO] [stdout]  --> Error Handling/Errors Primer/Multiple Errors/src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::str::Matches;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]     Checking functions_with_return_values_ v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Functions/Functions with Return Values)
[INFO] [stderr]     Checking defining_an_enum v0.1.0 (/opt/rustwide/workdir/Structs, Methods, Enums, and Pattern Matching/Enums/Defining an Enum)
[INFO] [stderr]     Checking adding_useful_functionality_with_derived_traits v0.1.0 (/opt/rustwide/workdir/Structs, Methods, Enums, and Pattern Matching/Structs/Adding Useful Functionality with Derived Traits)
[INFO] [stderr]     Checking the_slice_type v0.1.0 (/opt/rustwide/workdir/Understanding Ownership/The Slice Type/Intro)
[INFO] [stderr]     Checking matches_are_exhaustive v0.1.0 (/opt/rustwide/workdir/Structs, Methods, Enums, and Pattern Matching/Pattern Matching/Matches Are Exhaustive)
[INFO] [stderr]     Checking indexing_into_strings v0.1.0 (/opt/rustwide/workdir/Common Collections/Strings/Indexing into Strings)
[INFO] [stderr]     Checking who_owns_the_ring_of_power v0.1.0 (/opt/rustwide/workdir/Understanding Ownership/What is ownership/Who Owns the One Ring)
[INFO] [stderr]     Checking error_handling_intro v0.1.0 (/opt/rustwide/workdir/Error Handling/Error Handling/Intro)
[INFO] [stderr]     Checking duplicated_code_fragments v0.1.0 (/opt/rustwide/workdir/Generic Types, Traits, and Lifetime/Intro/Duplicated Code Fragments)
[INFO] [stderr]     Checking macros2 v0.1.0 (/opt/rustwide/workdir/Macros/Declarative Macros/Declaring a Macro)
[INFO] [stdout] warning: fields `width` and `height` are never read
[INFO] [stdout]  --> Structs, Methods, Enums, and Pattern Matching/Structs/Adding Useful Functionality with Derived Traits/src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Rectangle {
[INFO] [stdout]   |        --------- fields in this struct
[INFO] [stdout] 3 |     width: u32,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 4 |     height: u32,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Rectangle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking matching_on_different_errors v0.1.0 (/opt/rustwide/workdir/Error Handling/Error Handling/Matching on Different Errors)
[INFO] [stderr]     Checking modules3 v0.1.0 (/opt/rustwide/workdir/Modules/Modules/Time To Check Time)
[INFO] [stdout] warning: unused variable: `ip_kind`
[INFO] [stdout]  --> Structs, Methods, Enums, and Pattern Matching/Enums/Defining an Enum/src/main.rs:6:10
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn route(ip_kind: IpAddrKind) {}
[INFO] [stdout]   |          ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ip_kind`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking using_the_field_init_shorthand v0.1.0 (/opt/rustwide/workdir/Structs, Methods, Enums, and Pattern Matching/Structs/Using the Field Init Shorthand)
[INFO] [stdout] warning: unused variable: `word`
[INFO] [stdout]  --> Understanding Ownership/The Slice Type/Intro/src/main.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let word = first_word(&s); // word will get the value 5
[INFO] [stdout]   |         ^^^^ help: if this is intentional, prefix it with an underscore: `_word`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking re_exporting_names_with_pub_use v0.1.0 (/opt/rustwide/workdir/Modules/Modules/Re-exporting Names with pub use)
[INFO] [stderr]     Checking else_if v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Conditions/else if)
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking recoverable_errors_with_result v0.1.0 (/opt/rustwide/workdir/Error Handling/Error Handling/Recoverable Errors with Result)
[INFO] [stdout] warning: fields `email`, `sign_in_count`, and `active` are never read
[INFO] [stdout]  --> Structs, Methods, Enums, and Pattern Matching/Structs/Using the Field Init Shorthand/src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct User {
[INFO] [stdout]   |        ---- fields in this struct
[INFO] [stdout] 2 |     username: String,
[INFO] [stdout] 3 |     email: String,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 4 |     sign_in_count: u64,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 5 |     active: bool,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking string_slices v0.1.0 (/opt/rustwide/workdir/Understanding Ownership/The Slice Type/String Slices)
[INFO] [stderr]     Checking the_glob_operator v0.1.0 (/opt/rustwide/workdir/Modules/Modules/The Glob Operator)
[INFO] [stderr]     Checking dropping_a_vector_drops_its_elements v0.1.0 (/opt/rustwide/workdir/Common Collections/Vectors/Dropping a Vector Drops Its Elements)
[INFO] [stdout] error[E0277]: the type `str` cannot be indexed by `{integer}`
[INFO] [stdout]  --> Common Collections/Strings/Indexing into Strings/src/main.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let h = s1[0];
[INFO] [stdout]   |                ^ string indices are ranges of `usize`
[INFO] [stdout]   |
[INFO] [stdout]   = help: the trait `SliceIndex<str>` is not implemented for `{integer}`
[INFO] [stdout]   = note: you can use `.chars().nth()` or `.bytes().nth()`
[INFO] [stdout]           for more information, see chapter 8 in The Book: <https://doc.rust-lang.org/book/ch08-02-strings.html#indexing-into-strings>
[INFO] [stdout] help: `usize` implements trait `SliceIndex<T>`
[INFO] [stdout]  --> /rustc/50f413885985a8b0a0b6ca0766a0aedd45304953/library/core/src/slice/index.rs:214:0
[INFO] [stdout]   |
[INFO] [stdout]   = note: `SliceIndex<[T]>`
[INFO] [stdout]  --> /rustc/50f413885985a8b0a0b6ca0766a0aedd45304953/library/core/src/bstr/traits.rs:197:0
[INFO] [stdout]   |
[INFO] [stdout]   = note: `SliceIndex<ByteStr>`
[INFO] [stdout]   = note: required for `String` to implement `Index<{integer}>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking creating_multiple_producers_by_cloning_the_transmitter v0.1.0 (/opt/rustwide/workdir/Fearless Concurrency/Using Message Passing to Transfer Data Between Threads/Creating Multiple Producers by Cloning the Transmitter)
[INFO] [stderr] error: could not compile `indexing_into_strings` (bin "indexing_into_strings" test) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]  --> Error Handling/Error Handling/Matching on Different Errors/src/main.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let f = File::open("hello.txt").unwrap_or_else(|error| {
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::*`
[INFO] [stdout]  --> Modules/Modules/The Glob Operator/src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> Understanding Ownership/The Slice Type/String Slices/src/main.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let mut s = String::from("hello world");
[INFO] [stdout]   |         ----^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]  --> Error Handling/Error Handling/Recoverable Errors with Result/src/main.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let f = match f {
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]  --> Common Collections/Vectors/Dropping a Vector Drops Its Elements/src/main.rs:3:13
[INFO] [stdout]   |
[INFO] [stdout] 3 |         let v = vec![1, 2, 3, 4];
[INFO] [stdout]   |             ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f86bc59e5e15021eb6eb7bdc0b95ccb3b9fcfd292b9048a0ffaa214e3383b01d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f86bc59e5e15021eb6eb7bdc0b95ccb3b9fcfd292b9048a0ffaa214e3383b01d", kill_on_drop: false }`
[INFO] [stdout] f86bc59e5e15021eb6eb7bdc0b95ccb3b9fcfd292b9048a0ffaa214e3383b01d
