[INFO] fetching crate potlood 0.1.0...
[INFO] building potlood-0.1.0 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate potlood 0.1.0 into /workspace/builds/worker-3-tc2/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-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate potlood 0.1.0 on toolchain 4987e9d4227139400384ab59296ffee3b0fb1183
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cb44793c5b37d046002603d11e8ede598db44247e3f47a8aadddc90d58b8a14c
[INFO] running `Command { std: "docker" "start" "-a" "cb44793c5b37d046002603d11e8ede598db44247e3f47a8aadddc90d58b8a14c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cb44793c5b37d046002603d11e8ede598db44247e3f47a8aadddc90d58b8a14c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb44793c5b37d046002603d11e8ede598db44247e3f47a8aadddc90d58b8a14c", kill_on_drop: false }`
[INFO] [stdout] cb44793c5b37d046002603d11e8ede598db44247e3f47a8aadddc90d58b8a14c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 180015afb78422b160c321a165f07a622e8da3631ff9f4129059f032e3b2d31f
[INFO] running `Command { std: "docker" "start" "-a" "180015afb78422b160c321a165f07a622e8da3631ff9f4129059f032e3b2d31f", kill_on_drop: false }`
[INFO] [stderr]    Compiling potlood v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `Command { std: "docker" "inspect" "180015afb78422b160c321a165f07a622e8da3631ff9f4129059f032e3b2d31f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "180015afb78422b160c321a165f07a622e8da3631ff9f4129059f032e3b2d31f", kill_on_drop: false }`
[INFO] [stdout] 180015afb78422b160c321a165f07a622e8da3631ff9f4129059f032e3b2d31f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 082e3cb7fd965131d151faec6e4ce7332343be9eb50a09e3af116f6bb2f2bd8f
[INFO] running `Command { std: "docker" "start" "-a" "082e3cb7fd965131d151faec6e4ce7332343be9eb50a09e3af116f6bb2f2bd8f", 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 1.01s
[INFO] running `Command { std: "docker" "inspect" "082e3cb7fd965131d151faec6e4ce7332343be9eb50a09e3af116f6bb2f2bd8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "082e3cb7fd965131d151faec6e4ce7332343be9eb50a09e3af116f6bb2f2bd8f", kill_on_drop: false }`
[INFO] [stdout] 082e3cb7fd965131d151faec6e4ce7332343be9eb50a09e3af116f6bb2f2bd8f