[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#c797096598b80ba4a40397ad7e91584fcd3df5f1 for pr-146377
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDKolaya%2Frustling" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] [stderr] Updating files:  49% (3273/6650)
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:  56% (3724/6650)
Updating files:  57% (3791/6650)
Updating files:  57% (3844/6650)
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:  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% (6589/6650)
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-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/DKolaya/rustling on toolchain c797096598b80ba4a40397ad7e91584fcd3df5f1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c797096598b80ba4a40397ad7e91584fcd3df5f1" "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" "+c797096598b80ba4a40397ad7e91584fcd3df5f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+c797096598b80ba4a40397ad7e91584fcd3df5f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 92318f92c2670b92b0d9a2a463cb5b9338203c993299bcc1a6fd0a47662b7f5e
[INFO] running `Command { std: "docker" "start" "-a" "92318f92c2670b92b0d9a2a463cb5b9338203c993299bcc1a6fd0a47662b7f5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "92318f92c2670b92b0d9a2a463cb5b9338203c993299bcc1a6fd0a47662b7f5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92318f92c2670b92b0d9a2a463cb5b9338203c993299bcc1a6fd0a47662b7f5e", kill_on_drop: false }`
[INFO] [stdout] 92318f92c2670b92b0d9a2a463cb5b9338203c993299bcc1a6fd0a47662b7f5e
[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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+c797096598b80ba4a40397ad7e91584fcd3df5f1" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d20f2587918a7badf1382f574e18fa14aa1d0086bc4c710793015431cc878378
[INFO] running `Command { std: "docker" "start" "-a" "d20f2587918a7badf1382f574e18fa14aa1d0086bc4c710793015431cc878378", kill_on_drop: false }`
[INFO] [stderr]     Checking exercises v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0425]: cannot find value `basket` in this scope
[INFO] [stdout]   --> exercises/11_hashmaps/hashmaps1.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     basket.insert(String::from("banana"), 2);
[INFO] [stdout]    |     ^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `basket` in this scope
[INFO] [stdout]   --> exercises/11_hashmaps/hashmaps1.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     basket
[INFO] [stdout]    |     ^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: macro requires a boolean expression as an argument
[INFO] [stdout]   --> exercises/17_tests/tests1.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |         assert!();
[INFO] [stdout]    |         ^^^^^^^^^ boolean expression required
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: macro requires a boolean expression as an argument
[INFO] [stdout]   --> exercises/17_tests/tests1.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |         assert!();
[INFO] [stdout]    |         ^^^^^^^^^ boolean expression required
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exercises` (bin "hashmaps1" test) due to 2 previous errors
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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] [stderr] error: could not compile `exercises` (bin "tests1" test) due to 2 previous errors
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> exercises/20_threads/threads2.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 33 |     println!("Jobs done: {}", todo!());
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^-------^
[INFO] [stdout]    |     |                         |
[INFO] [stdout]    |     |                         any code following this expression is unreachable
[INFO] [stdout]    |     unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout]    = note: this warning originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0046]: not all trait items implemented, missing: `append_bar`
[INFO] [stdout]  --> exercises/15_traits/traits1.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 4 |     fn append_bar(self) -> Self;
[INFO] [stdout]   |     ---------------------------- `append_bar` from trait
[INFO] [stdout] ...
[INFO] [stdout] 7 | impl AppendBar for String {
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^ missing `append_bar` in implementation
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0046`.
[INFO] [stdout] 
[INFO] [stdout] error[E0594]: cannot assign to data in an `Arc`
[INFO] [stdout]   --> exercises/20_threads/threads2.rs:22:13
[INFO] [stdout]    |
[INFO] [stdout] 22 |             status_shared.jobs_done += 1;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot assign
[INFO] [stdout]    |
[INFO] [stdout]    = help: trait `DerefMut` is required to modify through a dereference, but it is not implemented for `Arc<JobStatus>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]   --> exercises/13_error_handling/errors3.rs:23:46
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn main() {
[INFO] [stdout]    | --------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 23 |     let cost = total_cost(pretend_user_input)?;
[INFO] [stdout]    |                                              ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]    |
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn main() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout]    |           +++++++++++++++++++++++++++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0594`.
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exercises` (bin "traits1") due to 1 previous error
[INFO] [stderr] error: could not compile `exercises` (bin "threads2") due to 1 previous error; 1 warning emitted
[INFO] [stderr] error: could not compile `exercises` (bin "errors3" test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "d20f2587918a7badf1382f574e18fa14aa1d0086bc4c710793015431cc878378", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d20f2587918a7badf1382f574e18fa14aa1d0086bc4c710793015431cc878378", kill_on_drop: false }`
[INFO] [stdout] d20f2587918a7badf1382f574e18fa14aa1d0086bc4c710793015431cc878378
