[INFO] cloning repository https://github.com/Anu-Ra-g/Rustlings_course
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Anu-Ra-g/Rustlings_course" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAnu-Ra-g%2FRustlings_course", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAnu-Ra-g%2FRustlings_course'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2cf814396d063ae41607a87034f5a14a9dd3ce35
[INFO] checking Anu-Ra-g/Rustlings_course against try#73ffebff6f34db7eb167bf9edcf2afa19c3073e9 for pr-147841
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAnu-Ra-g%2FRustlings_course" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Anu-Ra-g/Rustlings_course
[INFO] finished tweaking git repo https://github.com/Anu-Ra-g/Rustlings_course
[INFO] tweaked toml for git repo https://github.com/Anu-Ra-g/Rustlings_course written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Anu-Ra-g/Rustlings_course on toolchain 73ffebff6f34db7eb167bf9edcf2afa19c3073e9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+73ffebff6f34db7eb167bf9edcf2afa19c3073e9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Anu-Ra-g/Rustlings_course 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" "+73ffebff6f34db7eb167bf9edcf2afa19c3073e9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+73ffebff6f34db7eb167bf9edcf2afa19c3073e9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b76b7da63533868d4412417ed73548fe32744c422a30270b30a527cb7c4e4b4b
[INFO] running `Command { std: "docker" "start" "-a" "b76b7da63533868d4412417ed73548fe32744c422a30270b30a527cb7c4e4b4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b76b7da63533868d4412417ed73548fe32744c422a30270b30a527cb7c4e4b4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b76b7da63533868d4412417ed73548fe32744c422a30270b30a527cb7c4e4b4b", kill_on_drop: false }`
[INFO] [stdout] b76b7da63533868d4412417ed73548fe32744c422a30270b30a527cb7c4e4b4b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+73ffebff6f34db7eb167bf9edcf2afa19c3073e9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d43d01f1058a7ddb32d361caff856a141861a84b78aa974de52a04737823c5fa
[INFO] running `Command { std: "docker" "start" "-a" "d43d01f1058a7ddb32d361caff856a141861a84b78aa974de52a04737823c5fa", kill_on_drop: false }`
[INFO] [stderr]     Checking exercises v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `exercises` (bin "using_as" test) due to 1 previous error
[INFO] [stdout] error[E0277]: cannot divide `f64` by `usize`
[INFO] [stdout]  --> exercises/23_conversions/using_as.rs:8:11
[INFO] [stdout]   |
[INFO] [stdout] 8 |     total / values.len()
[INFO] [stdout]   |           ^ no implementation for `f64 / usize`
[INFO] [stdout]   |
[INFO] [stdout]   = help: the trait `Div<usize>` is not implemented for `f64`
[INFO] [stdout]   = help: the following other types implement trait `Div<Rhs>`:
[INFO] [stdout]             `&f64` implements `Div<f64>`
[INFO] [stdout]             `&f64` implements `Div`
[INFO] [stdout]             `f64` implements `Div<&f64>`
[INFO] [stdout]             `f64` implements `Div`
[INFO] [stdout] 
[INFO] [stdout] 
[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] error[E0597]: `string2` does not live long enough
[INFO] [stdout]   --> exercises/16_lifetimes/lifetimes2.rs:17:36
[INFO] [stdout]    |
[INFO] [stdout] 16 |         let string2 = String::from("xyz");
[INFO] [stdout]    |             ------- binding `string2` declared here
[INFO] [stdout] 17 |         result = longest(&string1, &string2);
[INFO] [stdout]    |                                    ^^^^^^^^ borrowed value does not live long enough
[INFO] [stdout] 18 |     }
[INFO] [stdout]    |     - `string2` dropped here while still borrowed
[INFO] [stdout] 19 |     println!("The longest string is '{result}'");
[INFO] [stdout]    |                                       ------ borrow later used here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0597`.
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `basket`
[INFO] [stdout]   --> exercises/11_hashmaps/hashmaps2.rs:22:17
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn fruit_basket(basket: &mut HashMap<Fruit, u32>) {
[INFO] [stdout]    |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_basket`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fruit`
[INFO] [stdout]   --> exercises/11_hashmaps/hashmaps2.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     for fruit in fruit_kinds {
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_fruit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exercises` (bin "lifetimes2" test) due to 1 previous error
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> exercises/11_hashmaps/hashmaps3.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let mut scores = HashMap::<&str, TeamScores>::new();
[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: `team_1_name`
[INFO] [stdout]   --> exercises/11_hashmaps/hashmaps3.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 25 |         let team_1_name = split_iterator.next().unwrap();
[INFO] [stdout]    |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_team_1_name`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `team_2_name`
[INFO] [stdout]   --> exercises/11_hashmaps/hashmaps3.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |         let team_2_name = split_iterator.next().unwrap();
[INFO] [stdout]    |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_team_2_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `team_1_score`
[INFO] [stdout]   --> exercises/11_hashmaps/hashmaps3.rs:27:13
[INFO] [stdout]    |
[INFO] [stdout] 27 |         let team_1_score: u8 = split_iterator.next().unwrap().parse().unwrap();
[INFO] [stdout]    |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_team_1_score`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `team_2_score`
[INFO] [stdout]   --> exercises/11_hashmaps/hashmaps3.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout] 28 |         let team_2_score: u8 = split_iterator.next().unwrap().parse().unwrap();
[INFO] [stdout]    |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_team_2_score`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]  --> exercises/18_iterators/iterators4.rs:1:27
[INFO] [stdout]   |
[INFO] [stdout] 1 | 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] help: consider returning the local binding `num`
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn factorial(num: u64) -> u64 {
[INFO] [stdout] 3 ~     num
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed for `Vec<_>`
[INFO] [stdout]   --> exercises/20_threads/threads1.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let mut results = Vec::new();
[INFO] [stdout]    |         ^^^^^^^^^^^   ---------- type must be known at this point
[INFO] [stdout]    |
[INFO] [stdout] help: consider giving `results` an explicit type, where the type for type parameter `T` is specified
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let mut results: Vec<T> = Vec::new();
[INFO] [stdout]    |                    ++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exercises` (bin "iterators4") due to 1 previous error
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exercises` (bin "threads1" test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "d43d01f1058a7ddb32d361caff856a141861a84b78aa974de52a04737823c5fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d43d01f1058a7ddb32d361caff856a141861a84b78aa974de52a04737823c5fa", kill_on_drop: false }`
[INFO] [stdout] d43d01f1058a7ddb32d361caff856a141861a84b78aa974de52a04737823c5fa
