[INFO] cloning repository https://github.com/Blinkion/rustlings
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Blinkion/rustlings" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBlinkion%2Frustlings", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBlinkion%2Frustlings'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6d9ea4a3c3aa7109157247696ab813a4700282ac
[INFO] checking Blinkion/rustlings against master#3f6250a7bb79e600d9036bbc7c8f65af43933643 for pr-147859
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBlinkion%2Frustlings" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
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[INFO] started tweaking git repo https://github.com/Blinkion/rustlings
[INFO] finished tweaking git repo https://github.com/Blinkion/rustlings
[INFO] tweaked toml for git repo https://github.com/Blinkion/rustlings written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Blinkion/rustlings on toolchain 3f6250a7bb79e600d9036bbc7c8f65af43933643
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3f6250a7bb79e600d9036bbc7c8f65af43933643" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Blinkion/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" "+3f6250a7bb79e600d9036bbc7c8f65af43933643" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+3f6250a7bb79e600d9036bbc7c8f65af43933643" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 77863a0d0b590a73fb2b63c215a269ac551b6da91dcad6097b5fd9c1b24b1987
[INFO] running `Command { std: "docker" "start" "-a" "77863a0d0b590a73fb2b63c215a269ac551b6da91dcad6097b5fd9c1b24b1987", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "77863a0d0b590a73fb2b63c215a269ac551b6da91dcad6097b5fd9c1b24b1987", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77863a0d0b590a73fb2b63c215a269ac551b6da91dcad6097b5fd9c1b24b1987", kill_on_drop: false }`
[INFO] [stdout] 77863a0d0b590a73fb2b63c215a269ac551b6da91dcad6097b5fd9c1b24b1987
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+3f6250a7bb79e600d9036bbc7c8f65af43933643" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 67dbfa8fb6f7b55118dc3ba93f69329d3f933565ea6fbac09c3151dac991009b
[INFO] running `Command { std: "docker" "start" "-a" "67dbfa8fb6f7b55118dc3ba93f69329d3f933565ea6fbac09c3151dac991009b", kill_on_drop: false }`
[INFO] [stderr]     Checking exercises v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> exercises/18_iterators/iterators1.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |         let mut fav_fruits_iterator = todo!();
[INFO] [stdout]    |                                       ------- any code following this expression is unreachable
[INFO] [stdout] 17 |
[INFO] [stdout] 18 |         assert_eq!(fav_fruits_iterator.next(), Some(&"banana"));
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> exercises/18_iterators/iterators3.rs:13:11
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn divide(a: i64, b: i64) -> Result<i64, DivisionError> {
[INFO] [stdout]    |           ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> exercises/18_iterators/iterators3.rs:13:19
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn divide(a: i64, b: i64) -> Result<i64, DivisionError> {
[INFO] [stdout]    |                   ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `division_results`
[INFO] [stdout]   --> exercises/18_iterators/iterators3.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let division_results = numbers.into_iter().map(|n| divide(n, 27));
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_division_results`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> exercises/18_iterators/iterators1.rs:16:13
[INFO] [stdout]    |
[INFO] [stdout] 16 |         let mut fav_fruits_iterator = todo!();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 17 |
[INFO] [stdout] 18 |         assert_eq!(fav_fruits_iterator.next(), Some(&"banana"));
[INFO] [stdout]    |                    ------------------- type must be known at this point
[INFO] [stdout]    |
[INFO] [stdout] help: consider giving `fav_fruits_iterator` an explicit type
[INFO] [stdout]    |
[INFO] [stdout] 16 |         let mut fav_fruits_iterator: /* Type */ = todo!();
[INFO] [stdout]    |                                    ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `division_results`
[INFO] [stdout]   --> exercises/18_iterators/iterators3.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let division_results = numbers.into_iter().map(|n| divide(n, 27));
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_division_results`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> exercises/18_iterators/iterators1.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |         assert_eq!(fav_fruits_iterator.next(), todo!()); // TODO: Replace `todo!()`
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-------^
[INFO] [stdout]    |         |                                      |
[INFO] [stdout]    |         |                                      any code following this expression is unreachable
[INFO] [stdout]    |         unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> exercises/18_iterators/iterators1.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |         assert_eq!(fav_fruits_iterator.next(), todo!()); // TODO: Replace `todo!()`
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-------^
[INFO] [stdout]    |         |                                      |
[INFO] [stdout]    |         |                                      any code following this expression is unreachable
[INFO] [stdout]    |         unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> exercises/18_iterators/iterators1.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |         assert_eq!(fav_fruits_iterator.next(), todo!()); // TODO: Replace `todo!()`
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-------^
[INFO] [stdout]    |         |                                      |
[INFO] [stdout]    |         |                                      any code following this expression is unreachable
[INFO] [stdout]    |         unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exercises` (bin "iterators1" test) due to 1 previous error; 4 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `exercises` (bin "macros1" test) due to 1 previous error; 1 warning emitted
[INFO] [stdout] warning: unused macro definition: `my_macro`
[INFO] [stdout]  --> exercises/21_macros/macros1.rs:1:14
[INFO] [stdout]   |
[INFO] [stdout] 1 | macro_rules! my_macro {
[INFO] [stdout]   |              ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_macros)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exercises` (bin "macros2" test) due to 1 previous error; 1 warning emitted
[INFO] [stdout] error[E0423]: expected function, found macro `my_macro`
[INFO] [stdout]  --> exercises/21_macros/macros1.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     my_macro();
[INFO] [stdout]   |     ^^^^^^^^ not a function
[INFO] [stdout]   |
[INFO] [stdout] help: use `!` to invoke the macro
[INFO] [stdout]   |
[INFO] [stdout] 9 |     my_macro!();
[INFO] [stdout]   |             +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exercises` (bin "from_str" test) due to 1 previous error
[INFO] [stdout] For more information about this error, try `rustc --explain E0423`.
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> exercises/23_conversions/from_str.rs:44:29
[INFO] [stdout]    |
[INFO] [stdout] 44 |     fn from_str(s: &str) -> Result<Self, Self::Err> {}
[INFO] [stdout]    |        --------             ^^^^^^^^^^^^^^^^^^^^^^^ expected `Result<Person, ParsePersonError>`, found `()`
[INFO] [stdout]    |        |
[INFO] [stdout]    |        implicitly returns `()` as its body has no tail or `return` expression
[INFO] [stdout]    |
[INFO] [stdout]    = note:   expected enum `Result<Person, ParsePersonError>`
[INFO] [stdout]            found unit type `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `my_macro` in this scope
[INFO] [stdout]  --> exercises/21_macros/macros2.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     my_macro!();
[INFO] [stdout]   |     ^^^^^^^^ consider moving the definition of `my_macro` before this call
[INFO] [stdout]   |
[INFO] [stdout] note: a macro with the same name exists, but it appears later
[INFO] [stdout]  --> exercises/21_macros/macros2.rs:6:14
[INFO] [stdout]   |
[INFO] [stdout] 6 | macro_rules! my_macro {
[INFO] [stdout]   |              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `my_macro`
[INFO] [stdout]  --> exercises/21_macros/macros2.rs:6:14
[INFO] [stdout]   |
[INFO] [stdout] 6 | macro_rules! my_macro {
[INFO] [stdout]   |              ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_macros)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "67dbfa8fb6f7b55118dc3ba93f69329d3f933565ea6fbac09c3151dac991009b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67dbfa8fb6f7b55118dc3ba93f69329d3f933565ea6fbac09c3151dac991009b", kill_on_drop: false }`
[INFO] [stdout] 67dbfa8fb6f7b55118dc3ba93f69329d3f933565ea6fbac09c3151dac991009b
