[INFO] crate optional 0.5.0 is already in cache
[INFO] checking optional-0.5.0 against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] extracting crate optional 0.5.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate optional 0.5.0 on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate optional 0.5.0
[INFO] finished tweaking crates.io crate optional 0.5.0
[INFO] tweaked toml for crates.io crate optional 0.5.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 4287388639f5d0ec1fb8b13c4fdc82da42309b9511cb69183fe08bb6c775e6ad
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "4287388639f5d0ec1fb8b13c4fdc82da42309b9511cb69183fe08bb6c775e6ad"`
[INFO] [stderr]    Compiling ryu v1.0.4
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking bencher v0.1.5
[INFO] [stderr]     Checking optional v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: `#[inline]` is ignored on function prototypes
[INFO] [stderr]     --> src/lib.rs:1033:5
[INFO] [stderr]      |
[INFO] [stderr] 1033 |     #[inline]
[INFO] [stderr]      |     ^^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_attributes)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `#[inline]` is ignored on function prototypes
[INFO] [stderr]     --> src/lib.rs:1117:5
[INFO] [stderr]      |
[INFO] [stderr] 1117 |     #[inline]
[INFO] [stderr]      |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Checking serde_json v1.0.52
[INFO] [stderr] warning: `#[inline]` is ignored on function prototypes
[INFO] [stderr]     --> src/lib.rs:1033:5
[INFO] [stderr]      |
[INFO] [stderr] 1033 |     #[inline]
[INFO] [stderr]      |     ^^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_attributes)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `#[inline]` is ignored on function prototypes
[INFO] [stderr]     --> src/lib.rs:1117:5
[INFO] [stderr]      |
[INFO] [stderr] 1117 |     #[inline]
[INFO] [stderr]      |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.66s
[INFO] running `"docker" "inspect" "4287388639f5d0ec1fb8b13c4fdc82da42309b9511cb69183fe08bb6c775e6ad"`
[INFO] running `"docker" "rm" "-f" "4287388639f5d0ec1fb8b13c4fdc82da42309b9511cb69183fe08bb6c775e6ad"`
[INFO] [stdout] 4287388639f5d0ec1fb8b13c4fdc82da42309b9511cb69183fe08bb6c775e6ad