[INFO] fetching crate potlood 0.1.0...
[INFO] building potlood-0.1.0 against master#ad85bc524b1ad696e42061ad8338d382dffbdbe5 for pr-146237-1
[INFO] extracting crate potlood 0.1.0 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate potlood 0.1.0
[INFO] finished tweaking crates.io crate potlood 0.1.0
[INFO] tweaked toml for crates.io crate potlood 0.1.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate potlood 0.1.0 on toolchain ad85bc524b1ad696e42061ad8338d382dffbdbe5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate potlood 0.1.0 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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 16d55ab8f8c2ca23768296812cbbdfb9ff7e03bbebc151598e9ca93ee3393892
[INFO] running `Command { std: "docker" "start" "-a" "16d55ab8f8c2ca23768296812cbbdfb9ff7e03bbebc151598e9ca93ee3393892", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "16d55ab8f8c2ca23768296812cbbdfb9ff7e03bbebc151598e9ca93ee3393892", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16d55ab8f8c2ca23768296812cbbdfb9ff7e03bbebc151598e9ca93ee3393892", kill_on_drop: false }`
[INFO] [stdout] 16d55ab8f8c2ca23768296812cbbdfb9ff7e03bbebc151598e9ca93ee3393892
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 863d61d59d5ce5fc33d5e78687f73db6992f7d02ae27d832f8939b3a34e9e998
[INFO] running `Command { std: "docker" "start" "-a" "863d61d59d5ce5fc33d5e78687f73db6992f7d02ae27d832f8939b3a34e9e998", kill_on_drop: false }`
[INFO] [stderr]    Compiling potlood v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `Command { std: "docker" "inspect" "863d61d59d5ce5fc33d5e78687f73db6992f7d02ae27d832f8939b3a34e9e998", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "863d61d59d5ce5fc33d5e78687f73db6992f7d02ae27d832f8939b3a34e9e998", kill_on_drop: false }`
[INFO] [stdout] 863d61d59d5ce5fc33d5e78687f73db6992f7d02ae27d832f8939b3a34e9e998
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f11f65dd8656d5dc38e642ae129f29ed8e7e5c47494855879edcdae0bb3996cc
[INFO] running `Command { std: "docker" "start" "-a" "f11f65dd8656d5dc38e642ae129f29ed8e7e5c47494855879edcdae0bb3996cc", kill_on_drop: false }`
[INFO] [stderr]    Compiling potlood v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> examples/shapes.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     paper.rect(width / 4, height / 4, 100, 200, Pixel::color(Color::Red));
[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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let _ = paper.rect(width / 4, height / 4, 100, 200, Pixel::color(Color::Red));
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> examples/shapes.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | /     paper.circle(
[INFO] [stdout] 21 | |         3 * width / 4,
[INFO] [stdout] 22 | |         3 * height / 4,
[INFO] [stdout] 23 | |         100,
[INFO] [stdout] 24 | |         Pixel::color(Color::Green),
[INFO] [stdout] 25 | |     );
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let _ = paper.circle(
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.96s
[INFO] running `Command { std: "docker" "inspect" "f11f65dd8656d5dc38e642ae129f29ed8e7e5c47494855879edcdae0bb3996cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f11f65dd8656d5dc38e642ae129f29ed8e7e5c47494855879edcdae0bb3996cc", kill_on_drop: false }`
[INFO] [stdout] f11f65dd8656d5dc38e642ae129f29ed8e7e5c47494855879edcdae0bb3996cc