[INFO] cloning repository https://github.com/willholl4nd/rustmazecreator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/willholl4nd/rustmazecreator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwillholl4nd%2Frustmazecreator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwillholl4nd%2Frustmazecreator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 089b1eecf9bc38c42c04179725b24dbcd5fe1a5f
[INFO] checking willholl4nd/rustmazecreator against master#b2728d5426bab1d8c39709768c7e22b7f66dde5d for pr-135852
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwillholl4nd%2Frustmazecreator" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] [stderr] Updating files:  87% (7/8)
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Updating files: 100% (8/8), done.
[INFO] validating manifest of git repo https://github.com/willholl4nd/rustmazecreator on toolchain b2728d5426bab1d8c39709768c7e22b7f66dde5d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b2728d5426bab1d8c39709768c7e22b7f66dde5d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/willholl4nd/rustmazecreator
[INFO] finished tweaking git repo https://github.com/willholl4nd/rustmazecreator
[INFO] tweaked toml for git repo https://github.com/willholl4nd/rustmazecreator written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/willholl4nd/rustmazecreator 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" "+b2728d5426bab1d8c39709768c7e22b7f66dde5d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded exr v1.5.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+b2728d5426bab1d8c39709768c7e22b7f66dde5d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c070eb154395689785647b4d486b67bdd4395b5a1fb114282096b6f04513db20
[INFO] running `Command { std: "docker" "start" "-a" "c070eb154395689785647b4d486b67bdd4395b5a1fb114282096b6f04513db20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c070eb154395689785647b4d486b67bdd4395b5a1fb114282096b6f04513db20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c070eb154395689785647b4d486b67bdd4395b5a1fb114282096b6f04513db20", kill_on_drop: false }`
[INFO] [stdout] c070eb154395689785647b4d486b67bdd4395b5a1fb114282096b6f04513db20
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+b2728d5426bab1d8c39709768c7e22b7f66dde5d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5135d129e2d45aab043bf8cf3e529ee4b2aa8e684c06123a8e1e8c3b2e9c8fa2
[INFO] running `Command { std: "docker" "start" "-a" "5135d129e2d45aab043bf8cf3e529ee4b2aa8e684c06123a8e1e8c3b2e9c8fa2", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling libc v0.2.132
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.11
[INFO] [stderr]     Checking once_cell v1.14.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling unicode-ident v1.0.3
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling rayon-core v1.9.3
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]     Checking miniz_oxide v0.5.3
[INFO] [stderr]    Compiling futures-core v0.3.24
[INFO] [stderr]     Checking either v1.8.0
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.10
[INFO] [stderr]    Compiling lock_api v0.4.8
[INFO] [stderr]    Compiling rayon v1.5.3
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]     Checking crossbeam-channel v0.5.6
[INFO] [stderr]     Checking spin v0.9.4
[INFO] [stderr]     Checking nanorand v0.7.0
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]     Checking futures-sink v0.3.24
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[INFO] [stderr]     Checking crossbeam-deque v0.8.2
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]     Checking rand_core v0.6.4
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[INFO] [stderr]     Checking color_quant v1.1.0
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[INFO] [stderr]     Checking png v0.17.5
[INFO] [stderr]     Checking gif v0.11.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]     Checking bytemuck v1.12.1
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking jpeg-decoder v0.2.6
[INFO] [stderr]     Checking tiff v0.7.3
[INFO] [stderr]    Compiling pin-project-internal v1.0.12
[INFO] [stderr]     Checking pin-project v1.0.12
[INFO] [stderr]     Checking flume v0.10.14
[INFO] [stderr]     Checking exr v1.5.0
[INFO] [stderr]     Checking image v0.24.3
[INFO] [stderr]     Checking rustmazecreator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `path_color` and `background_color` are never read
[INFO] [stdout]   --> src/main.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct Grid {
[INFO] [stdout]    |        ---- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 14 |     path_color: Rgb<u8>,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 15 |     background_color: Rgb<u8>
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `path_color` and `background_color` are never read
[INFO] [stdout]   --> src/main.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct Grid {
[INFO] [stdout]    |        ---- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 14 |     path_color: Rgb<u8>,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 15 |     background_color: Rgb<u8>
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |         img.save("maze.png");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 58 |         let _ = img.save("maze.png");
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |         img.save("maze.png");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 58 |         let _ = img.save("maze.png");
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 26.14s
[INFO] running `Command { std: "docker" "inspect" "5135d129e2d45aab043bf8cf3e529ee4b2aa8e684c06123a8e1e8c3b2e9c8fa2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5135d129e2d45aab043bf8cf3e529ee4b2aa8e684c06123a8e1e8c3b2e9c8fa2", kill_on_drop: false }`
[INFO] [stdout] 5135d129e2d45aab043bf8cf3e529ee4b2aa8e684c06123a8e1e8c3b2e9c8fa2