[INFO] cloning repository https://github.com/t0814524/rust-mandelbrot
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/t0814524/rust-mandelbrot" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ft0814524%2Frust-mandelbrot", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ft0814524%2Frust-mandelbrot'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d05cdb34e5aa4627cb455c48e611069e24ac47a5
[INFO] checking t0814524/rust-mandelbrot against try#fafe42c59556a4233f03dd0d900b575a9afeece8 for pr-143764
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ft0814524%2Frust-mandelbrot" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/t0814524/rust-mandelbrot
[INFO] finished tweaking git repo https://github.com/t0814524/rust-mandelbrot
[INFO] tweaked toml for git repo https://github.com/t0814524/rust-mandelbrot written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/t0814524/rust-mandelbrot on toolchain fafe42c59556a4233f03dd0d900b575a9afeece8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fafe42c59556a4233f03dd0d900b575a9afeece8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/t0814524/rust-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" "+fafe42c59556a4233f03dd0d900b575a9afeece8" "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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+fafe42c59556a4233f03dd0d900b575a9afeece8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c9dc9f5f38b85df02ef19f26cf06d07f36e72d320b6fc3a04547ccbb478b7dbf
[INFO] running `Command { std: "docker" "start" "-a" "c9dc9f5f38b85df02ef19f26cf06d07f36e72d320b6fc3a04547ccbb478b7dbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c9dc9f5f38b85df02ef19f26cf06d07f36e72d320b6fc3a04547ccbb478b7dbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9dc9f5f38b85df02ef19f26cf06d07f36e72d320b6fc3a04547ccbb478b7dbf", kill_on_drop: false }`
[INFO] [stdout] c9dc9f5f38b85df02ef19f26cf06d07f36e72d320b6fc3a04547ccbb478b7dbf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+fafe42c59556a4233f03dd0d900b575a9afeece8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 015cb5554c1050905bd52478defccd8065ccd81f8c75dae41785318b6ca8c74c
[INFO] running `Command { std: "docker" "start" "-a" "015cb5554c1050905bd52478defccd8065ccd81f8c75dae41785318b6ca8c74c", kill_on_drop: false }`
[INFO] [stderr]     Checking mandelbrot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/mandelbrot.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 | / ...   /**
[INFO] [stdout] 37 | | ...    * assignment says here if check_pixel return some IT IS in the set  
[INFO] [stdout] 38 | | ...    * but it also says about the implementation of the check_pixel fn that it's NOT IN THE SET if it returns Some. so what is it?? idk...
[INFO] [stdout] 39 | | ...    */
[INFO] [stdout]    | |_________^
[INFO] [stdout] 40 | / ...   match check_pixel(c, max_iterations) {
[INFO] [stdout] 41 | | ...       Some(_) => {
[INFO] [stdout] ...  |
[INFO] [stdout] 53 | | ...       None => {}
[INFO] [stdout] 54 | | ...   }
[INFO] [stdout]    | |_______- rustdoc does not generate documentation for expressions
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `/* */` for a plain comment
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/mandelbrot.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 | / ...   /**
[INFO] [stdout] 37 | | ...    * assignment says here if check_pixel return some IT IS in the set  
[INFO] [stdout] 38 | | ...    * but it also says about the implementation of the check_pixel fn that it's NOT IN THE SET if it returns Some. so what is it?? idk...
[INFO] [stdout] 39 | | ...    */
[INFO] [stdout]    | |_________^
[INFO] [stdout] 40 | / ...   match check_pixel(c, max_iterations) {
[INFO] [stdout] 41 | | ...       Some(_) => {
[INFO] [stdout] ...  |
[INFO] [stdout] 53 | | ...       None => {}
[INFO] [stdout] 54 | | ...   }
[INFO] [stdout]    | |_______- rustdoc does not generate documentation for expressions
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `/* */` for a plain comment
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] running `Command { std: "docker" "inspect" "015cb5554c1050905bd52478defccd8065ccd81f8c75dae41785318b6ca8c74c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "015cb5554c1050905bd52478defccd8065ccd81f8c75dae41785318b6ca8c74c", kill_on_drop: false }`
[INFO] [stdout] 015cb5554c1050905bd52478defccd8065ccd81f8c75dae41785318b6ca8c74c