[INFO] fetching crate memsocket 0.1.3...
[INFO] checking memsocket-0.1.3 against beta for pr-78714
[INFO] extracting crate memsocket 0.1.3 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate memsocket 0.1.3 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate memsocket 0.1.3
[INFO] finished tweaking crates.io crate memsocket 0.1.3
[INFO] tweaked toml for crates.io crate memsocket 0.1.3 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ba86fca5ba6430bcf26214842e9770c76bf245a85d4a04ad74ac37e456c67453
[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" "ba86fca5ba6430bcf26214842e9770c76bf245a85d4a04ad74ac37e456c67453", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ba86fca5ba6430bcf26214842e9770c76bf245a85d4a04ad74ac37e456c67453", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba86fca5ba6430bcf26214842e9770c76bf245a85d4a04ad74ac37e456c67453", kill_on_drop: false }`
[INFO] [stdout] ba86fca5ba6430bcf26214842e9770c76bf245a85d4a04ad74ac37e456c67453
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f3facf1f85a53f7a4e04f3a9ca14370c9322ac9510527677af856d09b26166ea
[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" "f3facf1f85a53f7a4e04f3a9ca14370c9322ac9510527677af856d09b26166ea", kill_on_drop: false }`
[INFO] [stderr]     Checking memsocket v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `std::result::Result` in tuple element 1 that must be used
[INFO] [stdout]   --> tests/bounded_test.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | /     tokio::runtime::current_thread::Runtime::new()
[INFO] [stdout] 32 | |         .unwrap()
[INFO] [stdout] 33 | |         .block_on({
[INFO] [stdout] 34 | |             tokio::io::read_to_end(server, vec![])
[INFO] [stdout] ...  |
[INFO] [stdout] 41 | |         })
[INFO] [stdout] 42 | |         .unwrap();
[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: unused `std::result::Result` in tuple element 1 that must be used
[INFO] [stdout]   --> tests/unbounded_test.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | /     tokio::runtime::current_thread::Runtime::new()
[INFO] [stdout] 32 | |         .unwrap()
[INFO] [stdout] 33 | |         .block_on({
[INFO] [stdout] 34 | |             tokio::io::read_to_end(server, vec![])
[INFO] [stdout] ...  |
[INFO] [stdout] 41 | |         })
[INFO] [stdout] 42 | |         .unwrap();
[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] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.18s
[INFO] running `Command { std: "docker" "inspect" "f3facf1f85a53f7a4e04f3a9ca14370c9322ac9510527677af856d09b26166ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3facf1f85a53f7a4e04f3a9ca14370c9322ac9510527677af856d09b26166ea", kill_on_drop: false }`
[INFO] [stdout] f3facf1f85a53f7a4e04f3a9ca14370c9322ac9510527677af856d09b26166ea