[INFO] fetching crate trust-dns-proto 0.20.2...
[INFO] checking trust-dns-proto-0.20.2 against try#b20a093d9fb1ffaa04ae9852cb034864a992bafd for pr-85073
[INFO] extracting crate trust-dns-proto 0.20.2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate trust-dns-proto 0.20.2 on toolchain b20a093d9fb1ffaa04ae9852cb034864a992bafd
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate trust-dns-proto 0.20.2
[INFO] finished tweaking crates.io crate trust-dns-proto 0.20.2
[INFO] tweaked toml for crates.io crate trust-dns-proto 0.20.2 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "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/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f9a95cbd872ae3049d9c55886c488ff0c9d014a12c5a213d5327a20226bfba8c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f9a95cbd872ae3049d9c55886c488ff0c9d014a12c5a213d5327a20226bfba8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f9a95cbd872ae3049d9c55886c488ff0c9d014a12c5a213d5327a20226bfba8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9a95cbd872ae3049d9c55886c488ff0c9d014a12c5a213d5327a20226bfba8c", kill_on_drop: false }`
[INFO] [stdout] f9a95cbd872ae3049d9c55886c488ff0c9d014a12c5a213d5327a20226bfba8c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 692df1c311d1e185b84919bc5e305804c32675839d992747e979c0acba896fce
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "692df1c311d1e185b84919bc5e305804c32675839d992747e979c0acba896fce", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-channel v0.3.15
[INFO] [stderr]    Compiling futures-util v0.3.15
[INFO] [stderr]    Compiling tokio v1.6.0
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking mio v0.7.11
[INFO] [stderr]    Compiling thiserror-impl v1.0.25
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]    Compiling async-trait v0.1.50
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]    Compiling enum-as-inner v0.3.3
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking env_logger v0.8.3
[INFO] [stderr]     Checking thiserror v1.0.25
[INFO] [stderr]     Checking futures-executor v0.3.15
[INFO] [stderr]     Checking trust-dns-proto v0.20.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> benches/lib.rs:142:9
[INFO] [stdout]     |
[INFO] [stdout] 142 |         Message::read(&mut decoder);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.32s
[INFO] running `Command { std: "docker" "inspect" "692df1c311d1e185b84919bc5e305804c32675839d992747e979c0acba896fce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "692df1c311d1e185b84919bc5e305804c32675839d992747e979c0acba896fce", kill_on_drop: false }`
[INFO] [stdout] 692df1c311d1e185b84919bc5e305804c32675839d992747e979c0acba896fce