[INFO] fetching crate dns-client 0.0.2...
[INFO] checking dns-client-0.0.2 against try#3e22d1f9053c0fc87629b3c6d5d9567856368e5d for pr-78714
[INFO] extracting crate dns-client 0.0.2 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate dns-client 0.0.2 on toolchain 3e22d1f9053c0fc87629b3c6d5d9567856368e5d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate dns-client 0.0.2
[INFO] finished tweaking crates.io crate dns-client 0.0.2
[INFO] tweaked toml for crates.io crate dns-client 0.0.2 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate dns-client 0.0.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded thiserror-impl v1.0.10
[INFO] [stderr]   Downloaded thiserror v1.0.10
[INFO] [stderr]   Downloaded async-task v1.3.0
[INFO] [stderr]   Downloaded async-std v1.4.0
[INFO] [stderr]   Downloaded dnsclient v0.1.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f79045c9baacf9d888ca8b3df3887a8d777e852f308e736ea87b324985ce6949
[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" "f79045c9baacf9d888ca8b3df3887a8d777e852f308e736ea87b324985ce6949", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f79045c9baacf9d888ca8b3df3887a8d777e852f308e736ea87b324985ce6949", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f79045c9baacf9d888ca8b3df3887a8d777e852f308e736ea87b324985ce6949", kill_on_drop: false }`
[INFO] [stdout] f79045c9baacf9d888ca8b3df3887a8d777e852f308e736ea87b324985ce6949
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 48e32a8ad0c72a1479cdca0dbdb63557251a3abeb681682542d74a01967693a5
[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" "48e32a8ad0c72a1479cdca0dbdb63557251a3abeb681682542d74a01967693a5", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.8
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]     Checking debug-builders v0.1.0
[INFO] [stderr]    Compiling debugtrace v0.1.0
[INFO] [stderr]     Checking scopeguard v1.0.0
[INFO] [stderr]    Compiling memchr v2.3.0
[INFO] [stderr]     Checking custom_derive v0.1.7
[INFO] [stderr]    Compiling anyhow v1.0.26
[INFO] [stderr]    Compiling rustversion v1.0.2
[INFO] [stderr]     Checking either v0.1.7
[INFO] [stderr]     Checking futures-io v0.3.1
[INFO] [stderr]     Checking once_cell v1.3.1
[INFO] [stderr]     Checking futures-timer v2.0.2
[INFO] [stderr]     Checking futures-core v0.3.1
[INFO] [stderr]    Compiling dbghelp-sys v0.2.0
[INFO] [stderr]    Compiling crossbeam-utils v0.7.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.0
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]     Checking conv v0.3.3
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking num_cpus v1.12.0
[INFO] [stderr]     Checking async-task v1.3.0
[INFO] [stderr]    Compiling memoffset v0.5.3
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]     Checking kv-log-macro v1.0.4
[INFO] [stderr]     Checking crossbeam-channel v0.4.0
[INFO] [stderr]     Checking crossbeam-deque v0.7.2
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking backtrace v0.1.8
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking chomp v0.3.1
[INFO] [stderr]     Checking async-std v1.4.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.10
[INFO] [stderr]     Checking thiserror v1.0.10
[INFO] [stderr]     Checking dnssector v0.2.0
[INFO] [stderr]     Checking dnsclient v0.1.7
[INFO] [stderr]     Checking dns-client v0.0.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.59s
[INFO] running `Command { std: "docker" "inspect" "48e32a8ad0c72a1479cdca0dbdb63557251a3abeb681682542d74a01967693a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48e32a8ad0c72a1479cdca0dbdb63557251a3abeb681682542d74a01967693a5", kill_on_drop: false }`
[INFO] [stdout] 48e32a8ad0c72a1479cdca0dbdb63557251a3abeb681682542d74a01967693a5