[INFO] fetching crate polyzero 0.0.1...
[INFO] checking polyzero-0.0.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate polyzero 0.0.1 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate polyzero 0.0.1 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate polyzero 0.0.1
[INFO] finished tweaking crates.io crate polyzero 0.0.1
[INFO] tweaked toml for crates.io crate polyzero 0.0.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate crates.io crate polyzero 0.0.1 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fde4faad66676523ed9ecee3a5fd99739b0f95301d2950639d9f59ffa9c06125
[INFO] running `Command { std: "docker" "start" "-a" "fde4faad66676523ed9ecee3a5fd99739b0f95301d2950639d9f59ffa9c06125", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fde4faad66676523ed9ecee3a5fd99739b0f95301d2950639d9f59ffa9c06125", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fde4faad66676523ed9ecee3a5fd99739b0f95301d2950639d9f59ffa9c06125", kill_on_drop: false }`
[INFO] [stdout] fde4faad66676523ed9ecee3a5fd99739b0f95301d2950639d9f59ffa9c06125
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e7ea72e111cc0ee3c67136cb39cf52d75d8a5324a7bfe094c072f21c9be9e02f
[INFO] running `Command { std: "docker" "start" "-a" "e7ea72e111cc0ee3c67136cb39cf52d75d8a5324a7bfe094c072f21c9be9e02f", kill_on_drop: false }`
[INFO] [stderr]     Checking itertools v0.11.0
[INFO] [stderr]     Checking num-complex v0.4.4
[INFO] [stderr]     Checking polyzero v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `newt`, `samp`
[INFO] [stdout]  --> src/main.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use polyzero::{newt, samp, Complex, Pol};
[INFO] [stdout]   |                ^^^^  ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `newt`, `samp`
[INFO] [stdout]  --> src/main.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use polyzero::{newt, samp, Complex, Pol};
[INFO] [stdout]   |                ^^^^  ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.58s
[INFO] running `Command { std: "docker" "inspect" "e7ea72e111cc0ee3c67136cb39cf52d75d8a5324a7bfe094c072f21c9be9e02f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7ea72e111cc0ee3c67136cb39cf52d75d8a5324a7bfe094c072f21c9be9e02f", kill_on_drop: false }`
[INFO] [stdout] e7ea72e111cc0ee3c67136cb39cf52d75d8a5324a7bfe094c072f21c9be9e02f
[INFO] checking polyzero-0.0.1 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate polyzero 0.0.1 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate polyzero 0.0.1 on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate polyzero 0.0.1
[INFO] finished tweaking crates.io crate polyzero 0.0.1
[INFO] tweaked toml for crates.io crate polyzero 0.0.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate crates.io crate polyzero 0.0.1 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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5b4a96b5b1d466590ea2a4b90c9e7b54f08d65df80453bdc054c0390ceb4e1d8
[INFO] running `Command { std: "docker" "start" "-a" "5b4a96b5b1d466590ea2a4b90c9e7b54f08d65df80453bdc054c0390ceb4e1d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5b4a96b5b1d466590ea2a4b90c9e7b54f08d65df80453bdc054c0390ceb4e1d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b4a96b5b1d466590ea2a4b90c9e7b54f08d65df80453bdc054c0390ceb4e1d8", kill_on_drop: false }`
[INFO] [stdout] 5b4a96b5b1d466590ea2a4b90c9e7b54f08d65df80453bdc054c0390ceb4e1d8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 198afaab55585af6042a853da1cdbcf70b8d2729b8928dda9dd13fb081e1bd16
[INFO] running `Command { std: "docker" "start" "-a" "198afaab55585af6042a853da1cdbcf70b8d2729b8928dda9dd13fb081e1bd16", kill_on_drop: false }`
[INFO] [stderr]     Checking itertools v0.11.0
[INFO] [stderr]     Checking num-complex v0.4.4
[INFO] [stderr]     Checking polyzero v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `newt`, `samp`
[INFO] [stdout]  --> src/main.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use polyzero::{newt, samp, Complex, Pol};
[INFO] [stdout]   |                ^^^^  ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `newt`, `samp`
[INFO] [stdout]  --> src/main.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use polyzero::{newt, samp, Complex, Pol};
[INFO] [stdout]   |                ^^^^  ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.10s
[INFO] running `Command { std: "docker" "inspect" "198afaab55585af6042a853da1cdbcf70b8d2729b8928dda9dd13fb081e1bd16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "198afaab55585af6042a853da1cdbcf70b8d2729b8928dda9dd13fb081e1bd16", kill_on_drop: false }`
[INFO] [stdout] 198afaab55585af6042a853da1cdbcf70b8d2729b8928dda9dd13fb081e1bd16