[INFO] cloning repository https://github.com/DKolaya/rustling
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/DKolaya/rustling" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDKolaya%2Frustling", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDKolaya%2Frustling'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 764960ec2f357856dacfaa37077ad8920d982bfc
[INFO] checking DKolaya/rustling against master#ab1d2444533d829e2d5cff6634cd3c70de6d7103 for pr-147841
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDKolaya%2Frustling" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] [stderr] Updating files:  48% (3205/6650)
Updating files:  49% (3259/6650)
Updating files:  50% (3325/6650)
Updating files:  51% (3392/6650)
Updating files:  52% (3458/6650)
Updating files:  53% (3525/6650)
Updating files:  54% (3591/6650)
Updating files:  55% (3658/6650)
Updating files:  55% (3723/6650)
Updating files:  56% (3724/6650)
Updating files:  57% (3791/6650)
Updating files:  58% (3857/6650)
Updating files:  59% (3924/6650)
Updating files:  60% (3990/6650)
Updating files:  61% (4057/6650)
Updating files:  62% (4123/6650)
Updating files:  63% (4190/6650)
Updating files:  64% (4256/6650)
Updating files:  65% (4323/6650)
Updating files:  66% (4389/6650)
Updating files:  66% (4392/6650)
Updating files:  67% (4456/6650)
Updating files:  68% (4522/6650)
Updating files:  69% (4589/6650)
Updating files:  70% (4655/6650)
Updating files:  71% (4722/6650)
Updating files:  72% (4788/6650)
Updating files:  73% (4855/6650)
Updating files:  74% (4921/6650)
Updating files:  75% (4988/6650)
Updating files:  76% (5054/6650)
Updating files:  77% (5121/6650)
Updating files:  78% (5187/6650)
Updating files:  79% (5254/6650)
Updating files:  80% (5320/6650)
Updating files:  81% (5387/6650)
Updating files:  82% (5453/6650)
Updating files:  83% (5520/6650)
Updating files:  84% (5586/6650)
Updating files:  85% (5653/6650)
Updating files:  86% (5719/6650)
Updating files:  87% (5786/6650)
Updating files:  88% (5852/6650)
Updating files:  89% (5919/6650)
Updating files:  90% (5985/6650)
Updating files:  91% (6052/6650)
Updating files:  92% (6118/6650)
Updating files:  93% (6185/6650)
Updating files:  94% (6251/6650)
Updating files:  95% (6318/6650)
Updating files:  96% (6384/6650)
Updating files:  97% (6451/6650)
Updating files:  98% (6517/6650)
Updating files:  99% (6584/6650)
Updating files:  99% (6623/6650)
Updating files: 100% (6650/6650)
Updating files: 100% (6650/6650), done.
[INFO] started tweaking git repo https://github.com/DKolaya/rustling
[INFO] finished tweaking git repo https://github.com/DKolaya/rustling
[INFO] tweaked toml for git repo https://github.com/DKolaya/rustling written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/DKolaya/rustling on toolchain ab1d2444533d829e2d5cff6634cd3c70de6d7103
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab1d2444533d829e2d5cff6634cd3c70de6d7103" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/DKolaya/rustling 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" "+ab1d2444533d829e2d5cff6634cd3c70de6d7103" "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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ab1d2444533d829e2d5cff6634cd3c70de6d7103" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c081ea7e93504ca1756c4a51ce5574a42455259ed13da069c99ea08a9a2a17db
[INFO] running `Command { std: "docker" "start" "-a" "c081ea7e93504ca1756c4a51ce5574a42455259ed13da069c99ea08a9a2a17db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c081ea7e93504ca1756c4a51ce5574a42455259ed13da069c99ea08a9a2a17db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c081ea7e93504ca1756c4a51ce5574a42455259ed13da069c99ea08a9a2a17db", kill_on_drop: false }`
[INFO] [stdout] c081ea7e93504ca1756c4a51ce5574a42455259ed13da069c99ea08a9a2a17db
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ab1d2444533d829e2d5cff6634cd3c70de6d7103" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9494d2cda94fb77cbb98bd285984aa4cfa447328fe298c916a78a7102f863ea1
[INFO] running `Command { std: "docker" "start" "-a" "9494d2cda94fb77cbb98bd285984aa4cfa447328fe298c916a78a7102f863ea1", kill_on_drop: false }`
[INFO] [stderr]     Checking exercises v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> exercises/18_iterators/iterators2.rs:17:47
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn capitalize_words_vector(words: &[&str]) -> Vec<String> {
[INFO] [stdout]    |    -----------------------                    ^^^^^^^^^^^ expected `Vec<String>`, found `()`
[INFO] [stdout]    |    |
[INFO] [stdout]    |    implicitly returns `()` as its body has no tail or `return` expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected struct `Vec<String>`
[INFO] [stdout]            found unit type `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> exercises/18_iterators/iterators2.rs:24:47
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn capitalize_words_string(words: &[&str]) -> String {
[INFO] [stdout]    |    -----------------------                    ^^^^^^ expected `String`, found `()`
[INFO] [stdout]    |    |
[INFO] [stdout]    |    implicitly returns `()` as its body has no tail or `return` expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `first`
[INFO] [stdout]   --> exercises/18_iterators/iterators2.rs:10:14
[INFO] [stdout]    |
[INFO] [stdout] 10 |         Some(first) => todo!(),
[INFO] [stdout]    |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_first`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exercises` (bin "iterators2") due to 2 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: expected identifier, found `)`
[INFO] [stdout]   --> exercises/15_traits/traits5.rs:22:23
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn some_func(item: ???) -> bool {
[INFO] [stdout]    |                       ^ expected identifier
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `item` in this scope
[INFO] [stdout]   --> exercises/15_traits/traits5.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     item.some_function() && item.other_function()
[INFO] [stdout]    |     ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `item` in this scope
[INFO] [stdout]   --> exercises/15_traits/traits5.rs:23:29
[INFO] [stdout]    |
[INFO] [stdout] 23 |     item.some_function() && item.other_function()
[INFO] [stdout]    |                             ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::Command`
[INFO] [stdout]   --> exercises/quizzes/quiz2.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     use super::Command;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[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] [stdout] error[E0425]: cannot find value `child_numbers` in this scope
[INFO] [stdout]   --> exercises/19_smart_pointers/arc1.rs:35:28
[INFO] [stdout]    |
[INFO] [stdout] 35 |             let sum: u32 = child_numbers.iter().filter(|&&n| n % 8 == offset).sum();
[INFO] [stdout]    |                            ^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `transformer` in this scope
[INFO] [stdout]   --> exercises/quizzes/quiz2.rs:51:22
[INFO] [stdout]    |
[INFO] [stdout] 51 |         let output = transformer(input);
[INFO] [stdout]    |                      ^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exercises` (bin "threads1") due to 1 previous error
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exercises` (bin "traits5" test) due to 3 previous errors
[INFO] [stderr] error: could not compile `exercises` (bin "quiz2" test) due to 1 previous error; 1 warning emitted
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> exercises/23_conversions/from_into.rs:37:25
[INFO] [stdout]    |
[INFO] [stdout] 37 |     fn from(s: &str) -> Self {}
[INFO] [stdout]    |        ----             ^^^^ expected `Person`, found `()`
[INFO] [stdout]    |        |
[INFO] [stdout]    |        implicitly returns `()` as its body has no tail or `return` expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused import: `sync::Arc`
[INFO] [stdout]   --> exercises/19_smart_pointers/arc1.rs:20:11
[INFO] [stdout]    |
[INFO] [stdout] 20 | use std::{sync::Arc, thread};
[INFO] [stdout]    |           ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> exercises/19_smart_pointers/arc1.rs:19:11
[INFO] [stdout]    |
[INFO] [stdout] 19 | #![forbid(unused_imports)]
[INFO] [stdout]    |           ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exercises` (bin "from_into" test) due to 1 previous error
[INFO] [stderr] error: could not compile `exercises` (bin "arc1") due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "9494d2cda94fb77cbb98bd285984aa4cfa447328fe298c916a78a7102f863ea1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9494d2cda94fb77cbb98bd285984aa4cfa447328fe298c916a78a7102f863ea1", kill_on_drop: false }`
[INFO] [stdout] 9494d2cda94fb77cbb98bd285984aa4cfa447328fe298c916a78a7102f863ea1
