[INFO] fetching crate viperus 0.1.10...
[INFO] checking viperus-0.1.10 against beta for pr-78714
[INFO] extracting crate viperus 0.1.10 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate viperus 0.1.10 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 viperus 0.1.10
[INFO] finished tweaking crates.io crate viperus 0.1.10
[INFO] tweaked toml for crates.io crate viperus 0.1.10 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate viperus 0.1.10 already has a lockfile, it will not be regenerated
[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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 75be02749878ffed66860d3b0b600a67877aab1b5deeebeadc8df90a79fb9714
[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" "75be02749878ffed66860d3b0b600a67877aab1b5deeebeadc8df90a79fb9714", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "75be02749878ffed66860d3b0b600a67877aab1b5deeebeadc8df90a79fb9714", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75be02749878ffed66860d3b0b600a67877aab1b5deeebeadc8df90a79fb9714", kill_on_drop: false }`
[INFO] [stdout] 75be02749878ffed66860d3b0b600a67877aab1b5deeebeadc8df90a79fb9714
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 1d6694307e5a17b6afc9b0b8661b1789f2645a68a4d92c8b1c5f35cb0d71e0da
[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" "1d6694307e5a17b6afc9b0b8661b1789f2645a68a4d92c8b1c5f35cb0d71e0da", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.0
[INFO] [stderr]     Checking inotify-sys v0.1.3
[INFO] [stderr]     Checking regex-automata v0.1.8
[INFO] [stderr]     Checking serde_yaml v0.8.11
[INFO] [stderr]     Checking mio-extras v2.0.6
[INFO] [stderr]     Checking criterion-plot v0.4.0
[INFO] [stderr]     Checking rand_os v0.2.2
[INFO] [stderr]     Checking rand_xoshiro v0.3.1
[INFO] [stderr]     Checking inotify v0.7.0
[INFO] [stderr]     Checking aho-corasick v0.7.6
[INFO] [stderr]     Checking csv-core v0.1.6
[INFO] [stderr]     Checking bstr v0.2.9
[INFO] [stderr]     Checking notify v4.0.15
[INFO] [stderr]     Checking csv v1.1.2
[INFO] [stderr]     Checking regex v1.3.3
[INFO] [stderr]     Checking criterion v0.3.0
[INFO] [stderr]     Checking java-properties v1.2.0
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking viperus v0.1.10 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]   --> src/global.rs:18:60
[INFO] [stdout]    |
[INFO] [stdout] 18 |     static ref VIPERUS: Arc::<Mutex::<Viperus<'static>>> = { Arc::new(Mutex::new(Viperus::new())) };
[INFO] [stdout]    |                                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_braces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]   --> src/global.rs:18:60
[INFO] [stdout]    |
[INFO] [stdout] 18 |     static ref VIPERUS: Arc::<Mutex::<Viperus<'static>>> = { Arc::new(Mutex::new(Viperus::new())) };
[INFO] [stdout]    |                                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_braces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.95s
[INFO] running `Command { std: "docker" "inspect" "1d6694307e5a17b6afc9b0b8661b1789f2645a68a4d92c8b1c5f35cb0d71e0da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d6694307e5a17b6afc9b0b8661b1789f2645a68a4d92c8b1c5f35cb0d71e0da", kill_on_drop: false }`
[INFO] [stdout] 1d6694307e5a17b6afc9b0b8661b1789f2645a68a4d92c8b1c5f35cb0d71e0da