[INFO] cloning repository https://github.com/MortenMunk/top-k-fastest-horses
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MortenMunk/top-k-fastest-horses" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMortenMunk%2Ftop-k-fastest-horses", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMortenMunk%2Ftop-k-fastest-horses'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 878738b77d3140a8be0ad8f73d83cc6e4e7cb73c
[INFO] checking MortenMunk/top-k-fastest-horses against master#12f35ad39ed3e39df4d953c46d4f6cc6c82adc96 for pr-155299-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMortenMunk%2Ftop-k-fastest-horses" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/MortenMunk/top-k-fastest-horses
[INFO] finished tweaking git repo https://github.com/MortenMunk/top-k-fastest-horses
[INFO] tweaked toml for git repo https://github.com/MortenMunk/top-k-fastest-horses written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/MortenMunk/top-k-fastest-horses on toolchain 12f35ad39ed3e39df4d953c46d4f6cc6c82adc96
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+12f35ad39ed3e39df4d953c46d4f6cc6c82adc96" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/MortenMunk/top-k-fastest-horses 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" "+12f35ad39ed3e39df4d953c46d4f6cc6c82adc96" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+12f35ad39ed3e39df4d953c46d4f6cc6c82adc96" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 45d59bdf46a2b6a9183dca5b07973403a852f00a9208ea501d8eab76b7b6eb34
[INFO] running `Command { std: "docker" "start" "-a" "45d59bdf46a2b6a9183dca5b07973403a852f00a9208ea501d8eab76b7b6eb34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "45d59bdf46a2b6a9183dca5b07973403a852f00a9208ea501d8eab76b7b6eb34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "45d59bdf46a2b6a9183dca5b07973403a852f00a9208ea501d8eab76b7b6eb34", kill_on_drop: false }`
[INFO] [stdout] 45d59bdf46a2b6a9183dca5b07973403a852f00a9208ea501d8eab76b7b6eb34
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+12f35ad39ed3e39df4d953c46d4f6cc6c82adc96" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a7656f680ef1605a4beaed9dce170c35ad41700c9ba6036c93ae29f3ec37bc27
[INFO] running `Command { std: "docker" "start" "-a" "a7656f680ef1605a4beaed9dce170c35ad41700c9ba6036c93ae29f3ec37bc27", kill_on_drop: false }`
[INFO] [stderr]     Checking top-k-fastest-horses v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `HashMap` and `VecDeque`
[INFO] [stdout]  --> src/main.rs:2:19
[INFO] [stdout]   |
[INFO] [stdout] 2 |     collections::{HashMap, VecDeque},
[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 imports: `HashMap` and `VecDeque`
[INFO] [stdout]  --> src/main.rs:2:19
[INFO] [stdout]   |
[INFO] [stdout] 2 |     collections::{HashMap, VecDeque},
[INFO] [stdout]   |                   ^^^^^^^  ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]  --> src/main.rs:6:63
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn min_races(total: usize, race_size: usize, top_k: usize) -> u32 {}
[INFO] [stdout]   |    ---------                                                  ^^^ expected `u32`, found `()`
[INFO] [stdout]   |    |
[INFO] [stdout]   |    implicitly returns `()` as its body has no tail or `return` expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]  --> src/main.rs:6:63
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn min_races(total: usize, race_size: usize, top_k: usize) -> u32 {}
[INFO] [stdout]   |    ---------                                                  ^^^ expected `u32`, found `()`
[INFO] [stdout]   |    |
[INFO] [stdout]   |    implicitly returns `()` as its body has no tail or `return` expression
[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 E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `top-k-fastest-horses` (bin "top-k-fastest-horses" test) due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `top-k-fastest-horses` (bin "top-k-fastest-horses") due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "a7656f680ef1605a4beaed9dce170c35ad41700c9ba6036c93ae29f3ec37bc27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7656f680ef1605a4beaed9dce170c35ad41700c9ba6036c93ae29f3ec37bc27", kill_on_drop: false }`
[INFO] [stdout] a7656f680ef1605a4beaed9dce170c35ad41700c9ba6036c93ae29f3ec37bc27
