[INFO] fetching crate ruc 8.1.4...
[INFO] building ruc-8.1.4 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate ruc 8.1.4 into /workspace/builds/worker-4-tc1/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-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate ruc 8.1.4 on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ssh2 v0.9.5
[INFO] [stderr]   Downloaded serde-transcode v1.1.1
[INFO] [stderr]   Downloaded libssh2-sys v0.3.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cf975a481a71a6fc05e345573fad899af49bd648d209fcfa959b6b4659357550
[INFO] running `Command { std: "docker" "start" "-a" "cf975a481a71a6fc05e345573fad899af49bd648d209fcfa959b6b4659357550", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cf975a481a71a6fc05e345573fad899af49bd648d209fcfa959b6b4659357550", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf975a481a71a6fc05e345573fad899af49bd648d209fcfa959b6b4659357550", kill_on_drop: false }`
[INFO] [stdout] cf975a481a71a6fc05e345573fad899af49bd648d209fcfa959b6b4659357550
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 64c12406ae257916559f8ade93e32e63d62c74c2215af9985918a5ec70a8fcec
[INFO] running `Command { std: "docker" "start" "-a" "64c12406ae257916559f8ade93e32e63d62c74c2215af9985918a5ec70a8fcec", 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 1.89s
[INFO] running `Command { std: "docker" "inspect" "64c12406ae257916559f8ade93e32e63d62c74c2215af9985918a5ec70a8fcec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64c12406ae257916559f8ade93e32e63d62c74c2215af9985918a5ec70a8fcec", kill_on_drop: false }`
[INFO] [stdout] 64c12406ae257916559f8ade93e32e63d62c74c2215af9985918a5ec70a8fcec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5241f6076d7f8fe841d0fb8f0660a81b97e5442aa301780ad8257334da3348ee
[INFO] running `Command { std: "docker" "start" "-a" "5241f6076d7f8fe841d0fb8f0660a81b97e5442aa301780ad8257334da3348ee", 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" "5241f6076d7f8fe841d0fb8f0660a81b97e5442aa301780ad8257334da3348ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5241f6076d7f8fe841d0fb8f0660a81b97e5442aa301780ad8257334da3348ee", kill_on_drop: false }`
[INFO] [stdout] 5241f6076d7f8fe841d0fb8f0660a81b97e5442aa301780ad8257334da3348ee