[INFO] fetching crate rust-dense-bitset 0.1.1...
[INFO] checking rust-dense-bitset-0.1.1 against master#d902752866cbbdb331e3cf28ff6bba86ab0f6c62 for pr-77271
[INFO] extracting crate rust-dense-bitset 0.1.1 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate rust-dense-bitset 0.1.1 on toolchain d902752866cbbdb331e3cf28ff6bba86ab0f6c62
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d902752866cbbdb331e3cf28ff6bba86ab0f6c62" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rust-dense-bitset 0.1.1
[INFO] finished tweaking crates.io crate rust-dense-bitset 0.1.1
[INFO] tweaked toml for crates.io crate rust-dense-bitset 0.1.1 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d902752866cbbdb331e3cf28ff6bba86ab0f6c62" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d902752866cbbdb331e3cf28ff6bba86ab0f6c62" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+d902752866cbbdb331e3cf28ff6bba86ab0f6c62" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 63c01d80a3153f8d70c1750e8d3d16944ac593f568838f9cdba8a477f6e81cc9
[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" "63c01d80a3153f8d70c1750e8d3d16944ac593f568838f9cdba8a477f6e81cc9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "63c01d80a3153f8d70c1750e8d3d16944ac593f568838f9cdba8a477f6e81cc9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63c01d80a3153f8d70c1750e8d3d16944ac593f568838f9cdba8a477f6e81cc9", kill_on_drop: false }`
[INFO] [stdout] 63c01d80a3153f8d70c1750e8d3d16944ac593f568838f9cdba8a477f6e81cc9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+d902752866cbbdb331e3cf28ff6bba86ab0f6c62" "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] a876131bf05c3576033872b7f32c5c687e26b35893a596983db460e6ab18a043
[INFO] running `Command { std: "docker" "start" "-a" "a876131bf05c3576033872b7f32c5c687e26b35893a596983db460e6ab18a043", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking rust-dense-bitset v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking serde_json v1.0.57
[INFO] [stderr]     Checking rand_xoshiro v0.1.0
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/u64impl.rs:109:13
[INFO] [stdout]     |
[INFO] [stdout] 109 |             (self.state >> position)
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.23
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking bstr v0.2.13
[INFO] [stderr]     Checking crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking crossbeam-channel v0.4.4
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking criterion-plot v0.3.1
[INFO] [stderr]     Checking tinytemplate v1.1.0
[INFO] [stderr]     Checking csv v1.1.3
[INFO] [stderr]     Checking rayon-core v1.8.1
[INFO] [stderr]    Compiling syn v1.0.42
[INFO] [stderr]     Checking rayon v1.4.1
[INFO] [stderr]    Compiling serde_derive v1.0.116
[INFO] [stderr]     Checking criterion v0.2.11
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/u64impl.rs:109:13
[INFO] [stdout]     |
[INFO] [stdout] 109 |             (self.state >> position)
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` 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 38.32s
[INFO] running `Command { std: "docker" "inspect" "a876131bf05c3576033872b7f32c5c687e26b35893a596983db460e6ab18a043", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a876131bf05c3576033872b7f32c5c687e26b35893a596983db460e6ab18a043", kill_on_drop: false }`
[INFO] [stdout] a876131bf05c3576033872b7f32c5c687e26b35893a596983db460e6ab18a043