[INFO] crate linux-io-uring 0.1.0 is already in cache
[INFO] checking linux-io-uring-0.1.0 against try#3ae4c050387df9f7fbb379ee90ce8bf05e566870 for pr-70872
[INFO] extracting crate linux-io-uring 0.1.0 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate linux-io-uring 0.1.0 on toolchain 3ae4c050387df9f7fbb379ee90ce8bf05e566870
[INFO] running `"/workspace/cargo-home/bin/cargo" "+3ae4c050387df9f7fbb379ee90ce8bf05e566870" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate linux-io-uring 0.1.0
[INFO] finished tweaking crates.io crate linux-io-uring 0.1.0
[INFO] tweaked toml for crates.io crate linux-io-uring 0.1.0 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+3ae4c050387df9f7fbb379ee90ce8bf05e566870" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+3ae4c050387df9f7fbb379ee90ce8bf05e566870" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+3ae4c050387df9f7fbb379ee90ce8bf05e566870" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 31fb17918fd2d153ea14fccd944bd5cabcc0a7c74c8c58945f4bc226afc5db76
[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" "31fb17918fd2d153ea14fccd944bd5cabcc0a7c74c8c58945f4bc226afc5db76"`
[INFO] [stderr]    Compiling linux-io-uring-sys v0.0.4
[INFO] [stderr]    Compiling nix v0.16.1
[INFO] [stderr]    Compiling uring-sys v1.0.0-beta
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking num_cpus v1.12.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking socket2 v0.3.12
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rayon-core v1.7.0
[INFO] [stderr]     Checking linux-io-uring v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr] error: constants of type `*mut core::ffi::c_void` cannot be used in a pattern
[INFO] [stderr]   --> src/util.rs:37:17
[INFO] [stderr]    |
[INFO] [stderr] 37 |                 libc::MAP_FAILED => Err(io::Error::last_os_error()),
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/util.rs:38:17
[INFO] [stderr]    |
[INFO] [stderr] 38 |                 addr => {
[INFO] [stderr]    |                 ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `linux-io-uring`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "31fb17918fd2d153ea14fccd944bd5cabcc0a7c74c8c58945f4bc226afc5db76"`
[INFO] running `"docker" "rm" "-f" "31fb17918fd2d153ea14fccd944bd5cabcc0a7c74c8c58945f4bc226afc5db76"`
[INFO] [stdout] 31fb17918fd2d153ea14fccd944bd5cabcc0a7c74c8c58945f4bc226afc5db76