[INFO] fetching crate io-uring 0.5.0-alpha...
[INFO] testing io-uring-0.5.0-alpha against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate io-uring 0.5.0-alpha into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate io-uring 0.5.0-alpha on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate io-uring 0.5.0-alpha
[INFO] finished tweaking crates.io crate io-uring 0.5.0-alpha
[INFO] tweaked toml for crates.io crate io-uring 0.5.0-alpha written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate io-uring 0.5.0-alpha already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e49ba5afeeb50107655b69abcfb73e4f2f04b9911ff812efbb47f7f7df11a3ec
[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" "e49ba5afeeb50107655b69abcfb73e4f2f04b9911ff812efbb47f7f7df11a3ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e49ba5afeeb50107655b69abcfb73e4f2f04b9911ff812efbb47f7f7df11a3ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e49ba5afeeb50107655b69abcfb73e4f2f04b9911ff812efbb47f7f7df11a3ec", kill_on_drop: false }`
[INFO] [stdout] e49ba5afeeb50107655b69abcfb73e4f2f04b9911ff812efbb47f7f7df11a3ec
[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=warn" "-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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--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] c5b76bec7faa580cfcc00c3551563253d277f08cdb40e0c534f63e2f67bf9592
[INFO] running `Command { std: "docker" "start" "-a" "c5b76bec7faa580cfcc00c3551563253d277f08cdb40e0c534f63e2f67bf9592", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling io-uring v0.5.0-alpha (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.11s
[INFO] running `Command { std: "docker" "inspect" "c5b76bec7faa580cfcc00c3551563253d277f08cdb40e0c534f63e2f67bf9592", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5b76bec7faa580cfcc00c3551563253d277f08cdb40e0c534f63e2f67bf9592", kill_on_drop: false }`
[INFO] [stdout] c5b76bec7faa580cfcc00c3551563253d277f08cdb40e0c534f63e2f67bf9592
[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=warn" "-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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0468e523890b48d28c821dbd1d3abc6389a821caefd01c30f773fd8aceed54f4
[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" "0468e523890b48d28c821dbd1d3abc6389a821caefd01c30f773fd8aceed54f4", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling syn v1.0.54
[INFO] [stderr]    Compiling itoa v0.4.6
[INFO] [stderr]    Compiling serde_json v1.0.60
[INFO] [stderr]    Compiling anyhow v1.0.35
[INFO] [stderr]    Compiling nix v0.18.0
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling serde_cbor v0.11.1
[INFO] [stderr]    Compiling socket2 v0.3.17
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling bstr v0.2.14
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling csv v1.1.5
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling tinytemplate v1.1.0
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling criterion v0.3.3
[INFO] [stderr]    Compiling io-uring v0.5.0-alpha (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 36.91s
[INFO] running `Command { std: "docker" "inspect" "0468e523890b48d28c821dbd1d3abc6389a821caefd01c30f773fd8aceed54f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0468e523890b48d28c821dbd1d3abc6389a821caefd01c30f773fd8aceed54f4", kill_on_drop: false }`
[INFO] [stdout] 0468e523890b48d28c821dbd1d3abc6389a821caefd01c30f773fd8aceed54f4
[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=warn" "-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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c702d6eabd4a65e070a826836ff4ecafb8b56dac2c4f69b173fe2c1caa35fd3d
[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" "c702d6eabd4a65e070a826836ff4ecafb8b56dac2c4f69b173fe2c1caa35fd3d", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.14s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/io_uring-dab86872d678460e
[INFO] [stdout] 
[INFO] [stdout] running 16 tests
[INFO] [stdout] test sys::bindgen_test_layout_io_cqring_offsets ... ok
[INFO] [stdout] test sys::bindgen_test_layout_io_uring_params ... ok
[INFO] [stdout] test sys::bindgen_test_layout_io_uring_probe ... ok
[INFO] [stdout] test sys::bindgen_test_layout_io_uring_sqe__bindgen_ty_3 ... ok
[INFO] [stdout] test sys::bindgen_test_layout_io_uring_sqe__bindgen_ty_4 ... ok
[INFO] [stdout] test sys::bindgen_test_layout_io_uring_sqe__bindgen_ty_4__bindgen_ty_1__bindgen_ty_1 ... ok
[INFO] [stdout] test sys::bindgen_test_layout___kernel_timespec ... ok
[INFO] [stdout] test sys::bindgen_test_layout_io_uring_probe_op ... ok
[INFO] [stdout] test sys::bindgen_test_layout_io_sqring_offsets ... ok
[INFO] [stdout] test sys::bindgen_test_layout_io_uring_sqe__bindgen_ty_4__bindgen_ty_1 ... ok
[INFO] [stdout] test sys::bindgen_test_layout_io_uring_sqe ... ok
[INFO] [stdout] test sys::bindgen_test_layout_io_uring_sqe__bindgen_ty_1 ... ok
[INFO] [stdout] test sys::bindgen_test_layout_open_how ... ok
[INFO] [stdout] test sys::bindgen_test_layout_io_uring_files_update ... ok
[INFO] [stdout] test sys::bindgen_test_layout_io_uring_sqe__bindgen_ty_2 ... ok
[INFO] [stdout] test sys::bindgen_test_layout_io_uring_cqe ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 16 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests io-uring
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c702d6eabd4a65e070a826836ff4ecafb8b56dac2c4f69b173fe2c1caa35fd3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c702d6eabd4a65e070a826836ff4ecafb8b56dac2c4f69b173fe2c1caa35fd3d", kill_on_drop: false }`
[INFO] [stdout] c702d6eabd4a65e070a826836ff4ecafb8b56dac2c4f69b173fe2c1caa35fd3d