[INFO] fetching crate ruc 8.1.4...
[INFO] building ruc-8.1.4 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate ruc 8.1.4 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate ruc 8.1.4
[INFO] finished tweaking crates.io crate ruc 8.1.4
[INFO] tweaked toml for crates.io crate ruc 8.1.4 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ruc 8.1.4 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 ruc 8.1.4 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 068b6e2d534887083ed799addb3305da7af061b77eae071eee793149e2716749
[INFO] running `Command { std: "docker" "start" "-a" "068b6e2d534887083ed799addb3305da7af061b77eae071eee793149e2716749", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "068b6e2d534887083ed799addb3305da7af061b77eae071eee793149e2716749", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "068b6e2d534887083ed799addb3305da7af061b77eae071eee793149e2716749", kill_on_drop: false }`
[INFO] [stdout] 068b6e2d534887083ed799addb3305da7af061b77eae071eee793149e2716749
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 5380604f275ff847a64da1f5174861965d32f0549c7f9cf8198856d64ae929cd
[INFO] running `Command { std: "docker" "start" "-a" "5380604f275ff847a64da1f5174861965d32f0549c7f9cf8198856d64ae929cd", kill_on_drop: false }`
[INFO] [stderr]    Compiling time v0.3.41
[INFO] [stderr]    Compiling ruc v8.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.24s
[INFO] running `Command { std: "docker" "inspect" "5380604f275ff847a64da1f5174861965d32f0549c7f9cf8198856d64ae929cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5380604f275ff847a64da1f5174861965d32f0549c7f9cf8198856d64ae929cd", kill_on_drop: false }`
[INFO] [stdout] 5380604f275ff847a64da1f5174861965d32f0549c7f9cf8198856d64ae929cd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 5151603ad0a19fa3590521a1f93ca7ef9d4a7a051049d567ed5bba34ebc203cd
[INFO] running `Command { std: "docker" "start" "-a" "5151603ad0a19fa3590521a1f93ca7ef9d4a7a051049d567ed5bba34ebc203cd", kill_on_drop: false }`
[INFO] [stderr]    Compiling ruc v8.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] error: unused import: `crate::*`
[INFO] [stdout]    --> src/common.rs:177:9
[INFO] [stdout]     |
[INFO] [stdout] 177 |     use crate::*;
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:2:9
[INFO] [stdout]     |
[INFO] [stdout]   2 | #![deny(warnings)]
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     = note: `#[deny(unused_imports)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ruc` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "5151603ad0a19fa3590521a1f93ca7ef9d4a7a051049d567ed5bba34ebc203cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5151603ad0a19fa3590521a1f93ca7ef9d4a7a051049d567ed5bba34ebc203cd", kill_on_drop: false }`
[INFO] [stdout] 5151603ad0a19fa3590521a1f93ca7ef9d4a7a051049d567ed5bba34ebc203cd