[INFO] fetching crate python_comm_macros 0.1.5...
[INFO] checking python_comm_macros-0.1.5 against master#0599f3403366d9c57f0625e6de3af214b5042a90 for pr-87710
[INFO] extracting crate python_comm_macros 0.1.5 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate python_comm_macros 0.1.5 on toolchain 0599f3403366d9c57f0625e6de3af214b5042a90
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate python_comm_macros 0.1.5
[INFO] finished tweaking crates.io crate python_comm_macros 0.1.5
[INFO] tweaked toml for crates.io crate python_comm_macros 0.1.5 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate python_comm_macros 0.1.5 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 00f2cf6819e6aa27e7c6d4e7530d84641f81dd43f708e13dd7a967663fbbfbbe
[INFO] running `Command { std: "docker" "start" "-a" "00f2cf6819e6aa27e7c6d4e7530d84641f81dd43f708e13dd7a967663fbbfbbe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "00f2cf6819e6aa27e7c6d4e7530d84641f81dd43f708e13dd7a967663fbbfbbe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00f2cf6819e6aa27e7c6d4e7530d84641f81dd43f708e13dd7a967663fbbfbbe", kill_on_drop: false }`
[INFO] [stdout] 00f2cf6819e6aa27e7c6d4e7530d84641f81dd43f708e13dd7a967663fbbfbbe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a1b45baf4753a0e3713eab9182702fcb282abfd975ec6fdd4c33155b86be2c44
[INFO] running `Command { std: "docker" "start" "-a" "a1b45baf4753a0e3713eab9182702fcb282abfd975ec6fdd4c33155b86be2c44", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]     Checking unicode-xid v0.2.2
[INFO] [stderr]     Checking quote v1.0.9
[INFO] [stderr]     Checking python_comm_macros v0.1.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/bin/test.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let a: i32 = 0;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/bin/test.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let a: i32 = 0;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/bin/test.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let a: i32 = 0;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/bin/test.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let a: i32 = 0;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/bin/test.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let a: i32 = 0;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/bin/test.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let a: i32 = 0;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.55s
[INFO] running `Command { std: "docker" "inspect" "a1b45baf4753a0e3713eab9182702fcb282abfd975ec6fdd4c33155b86be2c44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1b45baf4753a0e3713eab9182702fcb282abfd975ec6fdd4c33155b86be2c44", kill_on_drop: false }`
[INFO] [stdout] a1b45baf4753a0e3713eab9182702fcb282abfd975ec6fdd4c33155b86be2c44