[INFO] fetching crate net2 0.2.39...
[INFO] checking net2-0.2.39 against master#35936c4839dd272646394779d151e060d0f6b3ac for pr-122960-1
[INFO] extracting crate net2 0.2.39 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate net2 0.2.39 on toolchain 35936c4839dd272646394779d151e060d0f6b3ac
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+35936c4839dd272646394779d151e060d0f6b3ac" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate net2 0.2.39
[INFO] finished tweaking crates.io crate net2 0.2.39
[INFO] tweaked toml for crates.io crate net2 0.2.39 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+35936c4839dd272646394779d151e060d0f6b3ac" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+35936c4839dd272646394779d151e060d0f6b3ac" "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" "+35936c4839dd272646394779d151e060d0f6b3ac" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 813cd7fd6a77957d0847be8b8f7af3b88b6b0d0779215f79612096fca6dd3f4d
[INFO] running `Command { std: "docker" "start" "-a" "813cd7fd6a77957d0847be8b8f7af3b88b6b0d0779215f79612096fca6dd3f4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "813cd7fd6a77957d0847be8b8f7af3b88b6b0d0779215f79612096fca6dd3f4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "813cd7fd6a77957d0847be8b8f7af3b88b6b0d0779215f79612096fca6dd3f4d", kill_on_drop: false }`
[INFO] [stdout] 813cd7fd6a77957d0847be8b8f7af3b88b6b0d0779215f79612096fca6dd3f4d
[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" "+35936c4839dd272646394779d151e060d0f6b3ac" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1e48bad2cda021223a8c1b2576b195fab2666c4748b417b9dc3362ee5fe660a5
[INFO] running `Command { std: "docker" "start" "-a" "1e48bad2cda021223a8c1b2576b195fab2666c4748b417b9dc3362ee5fe660a5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking net2 v0.2.39 (/opt/rustwide/workdir)
[INFO] [stdout] error: the item `libc` is imported redundantly
[INFO] [stdout]   --> src/sys/unix/mod.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | use libc::{self, c_int};
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:49:39
[INFO] [stdout]    |
[INFO] [stdout] 49 | #[cfg(any(target_os = "wasi", unix))] extern crate libc;
[INFO] [stdout]    |                                       ------------------ the item `libc` is already imported here
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:42:23
[INFO] [stdout]    |
[INFO] [stdout] 42 | #![deny(missing_docs, warnings)]
[INFO] [stdout]    |                       ^^^^^^^^
[INFO] [stdout]    = note: `#[deny(unused_imports)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `libc` is imported redundantly
[INFO] [stdout]   --> src/sys/unix/mod.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | use libc::{self, c_int};
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:49:39
[INFO] [stdout]    |
[INFO] [stdout] 49 | #[cfg(any(target_os = "wasi", unix))] extern crate libc;
[INFO] [stdout]    |                                       ------------------ the item `libc` is already imported here
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:42:23
[INFO] [stdout]    |
[INFO] [stdout] 42 | #![deny(missing_docs, warnings)]
[INFO] [stdout]    |                       ^^^^^^^^
[INFO] [stdout]    = note: `#[deny(unused_imports)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait `Zero` is never used
[INFO] [stdout]   --> src/utils.rs:40:11
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub trait Zero {
[INFO] [stdout]    |           ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[deny(dead_code)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait `Zero` is never used
[INFO] [stdout]   --> src/utils.rs:40:11
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub trait Zero {
[INFO] [stdout]    |           ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[deny(dead_code)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `net2` (lib test) due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `net2` (lib) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "1e48bad2cda021223a8c1b2576b195fab2666c4748b417b9dc3362ee5fe660a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e48bad2cda021223a8c1b2576b195fab2666c4748b417b9dc3362ee5fe660a5", kill_on_drop: false }`
[INFO] [stdout] 1e48bad2cda021223a8c1b2576b195fab2666c4748b417b9dc3362ee5fe660a5