[INFO] fetching crate dns_common 0.2.1...
[INFO] checking dns_common-0.2.1 against master#f167efad2f51088d86180ee89177b3d7c9e7c2f5 for pr-129543
[INFO] extracting crate dns_common 0.2.1 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate dns_common 0.2.1 on toolchain f167efad2f51088d86180ee89177b3d7c9e7c2f5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f167efad2f51088d86180ee89177b3d7c9e7c2f5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate dns_common 0.2.1
[INFO] finished tweaking crates.io crate dns_common 0.2.1
[INFO] tweaked toml for crates.io crate dns_common 0.2.1 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f167efad2f51088d86180ee89177b3d7c9e7c2f5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 53 packages to latest compatible versions
[INFO] [stderr]       Adding matchers v0.1.0 (latest: v0.2.0)
[INFO] [stderr]       Adding nu-ansi-term v0.46.0 (latest: v0.50.1)
[INFO] [stderr]       Adding regex-automata v0.1.10 (latest: v0.4.7)
[INFO] [stderr]       Adding regex-syntax v0.6.29 (latest: v0.8.4)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.2+wasi-0.2.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f167efad2f51088d86180ee89177b3d7c9e7c2f5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unsafe-libyaml v0.2.11
[INFO] [stderr]   Downloaded directories-next v2.0.0
[INFO] [stderr]   Downloaded serde_yaml v0.9.34+deprecated
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+f167efad2f51088d86180ee89177b3d7c9e7c2f5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0b5af9d4122706833ea978e35ec7a5b0240c501871468a7dda63841e9725352b
[INFO] running `Command { std: "docker" "start" "-a" "0b5af9d4122706833ea978e35ec7a5b0240c501871468a7dda63841e9725352b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0b5af9d4122706833ea978e35ec7a5b0240c501871468a7dda63841e9725352b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b5af9d4122706833ea978e35ec7a5b0240c501871468a7dda63841e9725352b", kill_on_drop: false }`
[INFO] [stdout] 0b5af9d4122706833ea978e35ec7a5b0240c501871468a7dda63841e9725352b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+f167efad2f51088d86180ee89177b3d7c9e7c2f5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a3a0a2b5d0effd57ccceaf757507197c8b6f5970ef0f3f648b0d9872c6afa2a4
[INFO] running `Command { std: "docker" "start" "-a" "a3a0a2b5d0effd57ccceaf757507197c8b6f5970ef0f3f648b0d9872c6afa2a4", kill_on_drop: false }`
[INFO] [stderr]     Checking regex-syntax v0.8.4
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking sharded-slab v0.1.7
[INFO] [stderr]     Checking unsafe-libyaml v0.2.11
[INFO] [stderr]     Checking directories-next v2.0.0
[INFO] [stderr]     Checking regex-automata v0.4.7
[INFO] [stderr]     Checking regex v1.10.6
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]    Compiling serde_derive v1.0.209
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking tracing-subscriber v0.3.18
[INFO] [stderr]     Checking serde v1.0.209
[INFO] [stderr]     Checking serde_yaml v0.9.34+deprecated
[INFO] [stderr]     Checking dns_common v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `prelude`
[INFO] [stdout]  --> src/tracing.rs:3:26
[INFO] [stdout]   |
[INFO] [stdout] 3 | use tracing_subscriber::{prelude::*, EnvFilter};
[INFO] [stdout]   |                          ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `prelude`
[INFO] [stdout]  --> src/tracing.rs:3:26
[INFO] [stdout]   |
[INFO] [stdout] 3 | use tracing_subscriber::{prelude::*, EnvFilter};
[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 21.32s
[INFO] running `Command { std: "docker" "inspect" "a3a0a2b5d0effd57ccceaf757507197c8b6f5970ef0f3f648b0d9872c6afa2a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3a0a2b5d0effd57ccceaf757507197c8b6f5970ef0f3f648b0d9872c6afa2a4", kill_on_drop: false }`
[INFO] [stdout] a3a0a2b5d0effd57ccceaf757507197c8b6f5970ef0f3f648b0d9872c6afa2a4