[INFO] fetching crate twiggy-traits 0.8.0...
[INFO] testing twiggy-traits-0.8.0 against master#562dee4820c458d823175268e41601d4c060588a for pr-154210-2
[INFO] extracting crate twiggy-traits 0.8.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate twiggy-traits 0.8.0
[INFO] finished tweaking crates.io crate twiggy-traits 0.8.0
[INFO] tweaked toml for crates.io crate twiggy-traits 0.8.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate twiggy-traits 0.8.0 on toolchain 562dee4820c458d823175268e41601d4c060588a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate twiggy-traits 0.8.0 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" "+562dee4820c458d823175268e41601d4c060588a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded frozen v1.0.0
[INFO] [stderr]   Downloaded itoa v1.0.5
[INFO] [stderr]   Downloaded fixedbitset v0.4.1
[INFO] [stderr]   Downloaded wasmparser v0.80.2
[INFO] [stderr]   Downloaded ryu v1.0.10
[INFO] [stderr]   Downloaded anyhow v1.0.70
[INFO] [stderr]   Downloaded indexmap v1.8.2
[INFO] [stderr]   Downloaded cpp_demangle v0.3.5
[INFO] [stderr]   Downloaded twiggy-ir v0.8.0
[INFO] [stderr]   Downloaded regex-syntax v0.6.26
[INFO] [stderr]   Downloaded petgraph v0.6.2
[INFO] [stderr]   Downloaded regex v1.5.6
[INFO] [stderr]   Downloaded csv v1.2.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8bf7304a7ad2a0343b77675c33147a37c96eead3377a4db1a9e7c473bdb83332
[INFO] running `Command { std: "docker" "start" "-a" "8bf7304a7ad2a0343b77675c33147a37c96eead3377a4db1a9e7c473bdb83332", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8bf7304a7ad2a0343b77675c33147a37c96eead3377a4db1a9e7c473bdb83332", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8bf7304a7ad2a0343b77675c33147a37c96eead3377a4db1a9e7c473bdb83332", kill_on_drop: false }`
[INFO] [stdout] 8bf7304a7ad2a0343b77675c33147a37c96eead3377a4db1a9e7c473bdb83332
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a6b66fa6ccdf5cc91015113f4a066e6a53ae576a2eb1bcf109497bb1544733ab
[INFO] running `Command { std: "docker" "start" "-a" "a6b66fa6ccdf5cc91015113f4a066e6a53ae576a2eb1bcf109497bb1544733ab", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.94
[INFO] [stderr]    Compiling cpp_demangle v0.3.5
[INFO] [stderr]    Compiling fixedbitset v0.4.1
[INFO] [stderr]    Compiling anyhow v1.0.70
[INFO] [stderr]    Compiling thiserror v1.0.40
[INFO] [stderr]    Compiling regex-syntax v0.6.26
[INFO] [stderr]    Compiling frozen v1.0.0
[INFO] [stderr]    Compiling itoa v1.0.5
[INFO] [stderr]    Compiling rustc-demangle v0.1.21
[INFO] [stderr]    Compiling ryu v1.0.10
[INFO] [stderr]    Compiling indexmap v1.8.2
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling wasmparser v0.80.2
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling petgraph v0.6.2
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.101
[INFO] [stderr]    Compiling regex v1.5.6
[INFO] [stderr]    Compiling csv v1.2.2
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling thiserror-impl v1.0.40
[INFO] [stderr]    Compiling twiggy-ir v0.8.0
[INFO] [stderr]    Compiling twiggy-traits v0.8.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `items`
[INFO] [stdout]    --> traits.rs:103:9
[INFO] [stdout]     |
[INFO] [stdout] 103 |         items: &ir::Items,
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_items`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `destination`
[INFO] [stdout]    --> traits.rs:104:9
[INFO] [stdout]     |
[INFO] [stdout] 104 |         destination: &mut dyn io::Write,
[INFO] [stdout]     |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_destination`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.06s
[INFO] running `Command { std: "docker" "inspect" "a6b66fa6ccdf5cc91015113f4a066e6a53ae576a2eb1bcf109497bb1544733ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6b66fa6ccdf5cc91015113f4a066e6a53ae576a2eb1bcf109497bb1544733ab", kill_on_drop: false }`
[INFO] [stdout] a6b66fa6ccdf5cc91015113f4a066e6a53ae576a2eb1bcf109497bb1544733ab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9e494ee9f07add40f85f7784ec0df8228e51aa741c3e9a6123daeb04767d9d51
[INFO] running `Command { std: "docker" "start" "-a" "9e494ee9f07add40f85f7784ec0df8228e51aa741c3e9a6123daeb04767d9d51", kill_on_drop: false }`
[INFO] [stdout] warning: unused variable: `items`
[INFO] [stdout]    --> traits.rs:103:9
[INFO] [stdout]     |
[INFO] [stdout] 103 |         items: &ir::Items,
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_items`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `destination`
[INFO] [stdout]    --> traits.rs:104:9
[INFO] [stdout]     |
[INFO] [stdout] 104 |         destination: &mut dyn io::Write,
[INFO] [stdout]     |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_destination`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling twiggy-traits v0.8.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `items`
[INFO] [stdout]    --> traits.rs:103:9
[INFO] [stdout]     |
[INFO] [stdout] 103 |         items: &ir::Items,
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_items`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `destination`
[INFO] [stdout]    --> traits.rs:104:9
[INFO] [stdout]     |
[INFO] [stdout] 104 |         destination: &mut dyn io::Write,
[INFO] [stdout]     |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_destination`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "9e494ee9f07add40f85f7784ec0df8228e51aa741c3e9a6123daeb04767d9d51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e494ee9f07add40f85f7784ec0df8228e51aa741c3e9a6123daeb04767d9d51", kill_on_drop: false }`
[INFO] [stdout] 9e494ee9f07add40f85f7784ec0df8228e51aa741c3e9a6123daeb04767d9d51
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ef8d5e86a17dc36f3b1d02749257beba30e5129910199112ad85f6f907a78bbd
[INFO] running `Command { std: "docker" "start" "-a" "ef8d5e86a17dc36f3b1d02749257beba30e5129910199112ad85f6f907a78bbd", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `items`
[INFO] [stderr]    --> traits.rs:103:9
[INFO] [stderr]     |
[INFO] [stderr] 103 |         items: &ir::Items,
[INFO] [stderr]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_items`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `destination`
[INFO] [stderr]    --> traits.rs:104:9
[INFO] [stderr]     |
[INFO] [stderr] 104 |         destination: &mut dyn io::Write,
[INFO] [stderr]     |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_destination`
[INFO] [stderr] 
[INFO] [stderr] warning: `twiggy-traits` (lib) generated 2 warnings (run `cargo fix --lib -p twiggy-traits` to apply 2 suggestions)
[INFO] [stderr] warning: `twiggy-traits` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests traits.rs (/opt/rustwide/target/debug/deps/twiggy_traits-d0b92990748205c5)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests twiggy_traits
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ef8d5e86a17dc36f3b1d02749257beba30e5129910199112ad85f6f907a78bbd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef8d5e86a17dc36f3b1d02749257beba30e5129910199112ad85f6f907a78bbd", kill_on_drop: false }`
[INFO] [stdout] ef8d5e86a17dc36f3b1d02749257beba30e5129910199112ad85f6f907a78bbd