[INFO] fetching crate io-uring 0.5.0-alpha.2...
[INFO] checking io-uring-0.5.0-alpha.2 against master#4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5 for pr-81174
[INFO] extracting crate io-uring 0.5.0-alpha.2 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate io-uring 0.5.0-alpha.2 on toolchain 4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate io-uring 0.5.0-alpha.2
[INFO] finished tweaking crates.io crate io-uring 0.5.0-alpha.2
[INFO] tweaked toml for crates.io crate io-uring 0.5.0-alpha.2 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate crates.io crate io-uring 0.5.0-alpha.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "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] 2dd56b3c1731b884ab3bd34d2fc2c82e836f3bf65af1d33789ed73c9d80ce921
[INFO] running `Command { std: "docker" "start" "-a" "2dd56b3c1731b884ab3bd34d2fc2c82e836f3bf65af1d33789ed73c9d80ce921", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2dd56b3c1731b884ab3bd34d2fc2c82e836f3bf65af1d33789ed73c9d80ce921", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2dd56b3c1731b884ab3bd34d2fc2c82e836f3bf65af1d33789ed73c9d80ce921", kill_on_drop: false }`
[INFO] [stdout] 2dd56b3c1731b884ab3bd34d2fc2c82e836f3bf65af1d33789ed73c9d80ce921
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f33525a934d47ceb563aac86bf034ff3e81d7442ea24300298cea2499fd1467f
[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" "f33525a934d47ceb563aac86bf034ff3e81d7442ea24300298cea2499fd1467f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling io-uring v0.5.0-alpha.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking nix v0.19.1
[INFO] [stderr]     Checking socket2 v0.3.19
[INFO] [stdout] warning: unused import: `crate::util::cast_ptr`
[INFO] [stdout]   --> src/types.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 | use crate::util::cast_ptr;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::marker::PhantomData`
[INFO] [stdout]   --> src/types.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 46 | use std::marker::PhantomData;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::util::cast_ptr`
[INFO] [stdout]   --> src/types.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 | use crate::util::cast_ptr;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::marker::PhantomData`
[INFO] [stdout]   --> src/types.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 46 | use std::marker::PhantomData;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.01s
[INFO] running `Command { std: "docker" "inspect" "f33525a934d47ceb563aac86bf034ff3e81d7442ea24300298cea2499fd1467f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f33525a934d47ceb563aac86bf034ff3e81d7442ea24300298cea2499fd1467f", kill_on_drop: false }`
[INFO] [stdout] f33525a934d47ceb563aac86bf034ff3e81d7442ea24300298cea2499fd1467f