[INFO] fetching crate polyfuse 0.4.1...
[INFO] checking polyfuse-0.4.1 against master#4fa76a4a7742bb9c1febe33019f5a9e7e4839a65 for pr-83744
[INFO] extracting crate polyfuse 0.4.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate polyfuse 0.4.1 on toolchain 4fa76a4a7742bb9c1febe33019f5a9e7e4839a65
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate polyfuse 0.4.1
[INFO] finished tweaking crates.io crate polyfuse 0.4.1
[INFO] tweaked toml for crates.io crate polyfuse 0.4.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "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] d584a979aadcce3f6742d3e09ba53aa7f4e815f5c02c8d6ad8f29a1dd628cffe
[INFO] running `Command { std: "docker" "start" "-a" "d584a979aadcce3f6742d3e09ba53aa7f4e815f5c02c8d6ad8f29a1dd628cffe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d584a979aadcce3f6742d3e09ba53aa7f4e815f5c02c8d6ad8f29a1dd628cffe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d584a979aadcce3f6742d3e09ba53aa7f4e815f5c02c8d6ad8f29a1dd628cffe", kill_on_drop: false }`
[INFO] [stdout] d584a979aadcce3f6742d3e09ba53aa7f4e815f5c02c8d6ad8f29a1dd628cffe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "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] 151be282ddeba8e7249134dadd19b0b30a3363082c5c0833cd5e3610e4beb48e
[INFO] running `Command { std: "docker" "start" "-a" "151be282ddeba8e7249134dadd19b0b30a3363082c5c0833cd5e3610e4beb48e", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.69
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking tracing-core v0.1.17
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling zerocopy-derive v0.2.1
[INFO] [stderr]    Compiling tracing-attributes v0.1.15
[INFO] [stderr]     Checking zerocopy v0.3.0
[INFO] [stderr]     Checking tracing v0.1.25
[INFO] [stderr]     Checking polyfuse-kernel v0.1.0
[INFO] [stderr]     Checking polyfuse v0.4.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `attr`
[INFO] [stdout]  --> src/reply.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     attr: fuse_attr,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `st`
[INFO] [stdout]    --> src/reply.rs:356:5
[INFO] [stdout]     |
[INFO] [stdout] 356 |     st: fuse_kstatfs,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `lk`
[INFO] [stdout]    --> src/reply.rs:478:5
[INFO] [stdout]     |
[INFO] [stdout] 478 |     lk: fuse_file_lock,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `attr`
[INFO] [stdout]  --> src/reply.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     attr: fuse_attr,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `st`
[INFO] [stdout]    --> src/reply.rs:356:5
[INFO] [stdout]     |
[INFO] [stdout] 356 |     st: fuse_kstatfs,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `lk`
[INFO] [stdout]    --> src/reply.rs:478:5
[INFO] [stdout]     |
[INFO] [stdout] 478 |     lk: fuse_file_lock,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.96s
[INFO] running `Command { std: "docker" "inspect" "151be282ddeba8e7249134dadd19b0b30a3363082c5c0833cd5e3610e4beb48e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "151be282ddeba8e7249134dadd19b0b30a3363082c5c0833cd5e3610e4beb48e", kill_on_drop: false }`
[INFO] [stdout] 151be282ddeba8e7249134dadd19b0b30a3363082c5c0833cd5e3610e4beb48e