[INFO] cloning repository https://github.com/danplubell/rusty_mandelbrot
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/danplubell/rusty_mandelbrot" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdanplubell%2Frusty_mandelbrot", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdanplubell%2Frusty_mandelbrot'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6bca6463d8e365c00aaf891380656e0f9d7cb42e
[INFO] checking danplubell/rusty_mandelbrot against master#3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0 for pr-143164
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdanplubell%2Frusty_mandelbrot" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/danplubell/rusty_mandelbrot
[INFO] finished tweaking git repo https://github.com/danplubell/rusty_mandelbrot
[INFO] tweaked toml for git repo https://github.com/danplubell/rusty_mandelbrot written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/danplubell/rusty_mandelbrot on toolchain 3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/danplubell/rusty_mandelbrot 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" "+3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0" "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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d47d5f6830862a67b557736d40fb2f9fa5e2fcd6e7f7f301021044b14afe41ed
[INFO] running `Command { std: "docker" "start" "-a" "d47d5f6830862a67b557736d40fb2f9fa5e2fcd6e7f7f301021044b14afe41ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d47d5f6830862a67b557736d40fb2f9fa5e2fcd6e7f7f301021044b14afe41ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d47d5f6830862a67b557736d40fb2f9fa5e2fcd6e7f7f301021044b14afe41ed", kill_on_drop: false }`
[INFO] [stdout] d47d5f6830862a67b557736d40fb2f9fa5e2fcd6e7f7f301021044b14afe41ed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 24bfc1580afcff09dae281593782c42f70b55405581af636f944bf27eee9da65
[INFO] running `Command { std: "docker" "start" "-a" "24bfc1580afcff09dae281593782c42f70b55405581af636f944bf27eee9da65", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.4.0
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking num-bigint v0.4.6
[INFO] [stderr]     Checking num-iter v0.1.45
[INFO] [stderr]     Checking num-rational v0.4.2
[INFO] [stderr]     Checking num v0.4.3
[INFO] [stderr]     Checking rusty_mandelbrot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `num::complex::Complex`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use num::complex::Complex;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `num::complex::Complex`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use num::complex::Complex;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/main.rs:27:61
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn mandelbrot_at_point(x: f64, y: f64, max_iters: usize) -> usize {}
[INFO] [stdout]    |    -------------------                                      ^^^^^ expected `usize`, 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 `max_iters`
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn mandelbrot_at_point(x: f64, y: f64, max_iters: usize) -> usize { max_iters }
[INFO] [stdout]    |                                                                     +++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/main.rs:27:61
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn mandelbrot_at_point(x: f64, y: f64, max_iters: usize) -> usize {}
[INFO] [stdout]    |    -------------------                                      ^^^^^ expected `usize`, 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 `max_iters`
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn mandelbrot_at_point(x: f64, y: f64, max_iters: usize) -> usize { max_iters }
[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 E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rusty_mandelbrot` (bin "rusty_mandelbrot") 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 `rusty_mandelbrot` (bin "rusty_mandelbrot" test) due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "24bfc1580afcff09dae281593782c42f70b55405581af636f944bf27eee9da65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24bfc1580afcff09dae281593782c42f70b55405581af636f944bf27eee9da65", kill_on_drop: false }`
[INFO] [stdout] 24bfc1580afcff09dae281593782c42f70b55405581af636f944bf27eee9da65
