[INFO] fetching crate son_of_grid_engine 0.2.0...
[INFO] checking son_of_grid_engine-0.2.0 against master#3e826bb11228508fbe749e594038d6727208aa94 for pr-82322
[INFO] extracting crate son_of_grid_engine 0.2.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate son_of_grid_engine 0.2.0 on toolchain 3e826bb11228508fbe749e594038d6727208aa94
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e826bb11228508fbe749e594038d6727208aa94" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate son_of_grid_engine 0.2.0
[INFO] finished tweaking crates.io crate son_of_grid_engine 0.2.0
[INFO] tweaked toml for crates.io crate son_of_grid_engine 0.2.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e826bb11228508fbe749e594038d6727208aa94" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e826bb11228508fbe749e594038d6727208aa94" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+3e826bb11228508fbe749e594038d6727208aa94" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ce2dac7aa23fa554c700ee1ef8a252238f7bf980089c011eb68d0ab7315cd227
[INFO] running `Command { std: "docker" "start" "-a" "ce2dac7aa23fa554c700ee1ef8a252238f7bf980089c011eb68d0ab7315cd227", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ce2dac7aa23fa554c700ee1ef8a252238f7bf980089c011eb68d0ab7315cd227", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce2dac7aa23fa554c700ee1ef8a252238f7bf980089c011eb68d0ab7315cd227", kill_on_drop: false }`
[INFO] [stdout] ce2dac7aa23fa554c700ee1ef8a252238f7bf980089c011eb68d0ab7315cd227
[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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+3e826bb11228508fbe749e594038d6727208aa94" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 037bd57bed189b22e0288b5710c5d15a449ccb7541cb1ec263d8fa7d07be8a63
[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" "037bd57bed189b22e0288b5710c5d15a449ccb7541cb1ec263d8fa7d07be8a63", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.87
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking file v1.1.2
[INFO] [stderr]     Checking serde_json v1.0.64
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking son_of_grid_engine v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling serde_derive v1.0.123
[INFO] [stdout] warning: unused return value of `Result::<T, E>::is_ok` that must be used
[INFO] [stdout]    --> examples/networking.rs:180:33
[INFO] [stdout]     |
[INFO] [stdout] 180 | ...                   write(stream.get_mut(), ips).is_ok();
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: if you intended to assert that this is ok, consider `.unwrap()` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Result::<T, E>::is_ok` that must be used
[INFO] [stdout]    --> examples/networking.rs:205:37
[INFO] [stdout]     |
[INFO] [stdout] 205 | ...                   write(stream.get_mut(), id).is_ok();
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you intended to assert that this is ok, consider `.unwrap()` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.14s
[INFO] running `Command { std: "docker" "inspect" "037bd57bed189b22e0288b5710c5d15a449ccb7541cb1ec263d8fa7d07be8a63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "037bd57bed189b22e0288b5710c5d15a449ccb7541cb1ec263d8fa7d07be8a63", kill_on_drop: false }`
[INFO] [stdout] 037bd57bed189b22e0288b5710c5d15a449ccb7541cb1ec263d8fa7d07be8a63