[INFO] fetching crate weyl 0.1.3...
[INFO] checking weyl-0.1.3 against try#b2f80f6008cdafc35b4472bd46afa16cc6b0cd63 for pr-79470
[INFO] extracting crate weyl 0.1.3 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate weyl 0.1.3 on toolchain b2f80f6008cdafc35b4472bd46afa16cc6b0cd63
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate weyl 0.1.3
[INFO] finished tweaking crates.io crate weyl 0.1.3
[INFO] tweaked toml for crates.io crate weyl 0.1.3 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "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] bfdc2b42c754b09a8d8f17807a975dc720cce3fafbd9ec2b493ccca502189ddf
[INFO] running `Command { std: "docker" "start" "-a" "bfdc2b42c754b09a8d8f17807a975dc720cce3fafbd9ec2b493ccca502189ddf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bfdc2b42c754b09a8d8f17807a975dc720cce3fafbd9ec2b493ccca502189ddf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bfdc2b42c754b09a8d8f17807a975dc720cce3fafbd9ec2b493ccca502189ddf", kill_on_drop: false }`
[INFO] [stdout] bfdc2b42c754b09a8d8f17807a975dc720cce3fafbd9ec2b493ccca502189ddf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 702d6fa72eb0b7ba8903737af45a3537348d6c59b7189fdf2c49ce4e1c5b7bb0
[INFO] running `Command { std: "docker" "start" "-a" "702d6fa72eb0b7ba8903737af45a3537348d6c59b7189fdf2c49ce4e1c5b7bb0", kill_on_drop: false }`
[INFO] [stderr]     Checking weyl v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]   --> src/lib.rs:74:35
[INFO] [stdout]    |
[INFO] [stdout] 74 |     static ref RAND: Mutex<Rng> = { Mutex::new(Rng::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: unnecessary braces around block return value
[INFO] [stdout]   --> src/lib.rs:74:35
[INFO] [stdout]    |
[INFO] [stdout] 74 |     static ref RAND: Mutex<Rng> = { Mutex::new(Rng::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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `Command { std: "docker" "inspect" "702d6fa72eb0b7ba8903737af45a3537348d6c59b7189fdf2c49ce4e1c5b7bb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "702d6fa72eb0b7ba8903737af45a3537348d6c59b7189fdf2c49ce4e1c5b7bb0", kill_on_drop: false }`
[INFO] [stdout] 702d6fa72eb0b7ba8903737af45a3537348d6c59b7189fdf2c49ce4e1c5b7bb0