[INFO] fetching crate async-std 1.10.0...
[INFO] testing async-std-1.10.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate async-std 1.10.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate async-std 1.10.0 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate async-std 1.10.0
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate async-std 1.10.0
[INFO] tweaked toml for crates.io crate async-std 1.10.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate async-std 1.10.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded curl-sys v0.4.39+curl-7.74.0
[INFO] [stderr]   Downloaded libnghttp2-sys v0.1.5+1.42.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 79335534c6ae0fed5c8135a10dfb0e9f09f2f3300fd6a9f4c30e73d60a64368d
[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" "79335534c6ae0fed5c8135a10dfb0e9f09f2f3300fd6a9f4c30e73d60a64368d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "79335534c6ae0fed5c8135a10dfb0e9f09f2f3300fd6a9f4c30e73d60a64368d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79335534c6ae0fed5c8135a10dfb0e9f09f2f3300fd6a9f4c30e73d60a64368d", kill_on_drop: false }`
[INFO] [stdout] 79335534c6ae0fed5c8135a10dfb0e9f09f2f3300fd6a9f4c30e73d60a64368d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3bba87d41166590e547aaeb3686c4b59154b19354d343701e53c681403d95a17
[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" "3bba87d41166590e547aaeb3686c4b59154b19354d343701e53c681403d95a17", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling log v0.4.13
[INFO] [stderr]    Compiling futures-core v0.3.9
[INFO] [stderr]    Compiling pin-project-lite v0.2.4
[INFO] [stderr]    Compiling futures-io v0.3.9
[INFO] [stderr]    Compiling fastrand v1.4.0
[INFO] [stderr]    Compiling once_cell v1.5.2
[INFO] [stderr]    Compiling vec-arena v1.0.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]    Compiling async-lock v2.3.0
[INFO] [stderr]    Compiling async-channel v1.5.1
[INFO] [stderr]    Compiling futures-lite v1.11.3
[INFO] [stderr]    Compiling kv-log-macro v1.0.7
[INFO] [stderr]    Compiling nb-connect v1.0.2
[INFO] [stderr]    Compiling polling v2.0.2
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling async-executor v1.4.0
[INFO] [stderr]    Compiling async-io v1.3.1
[INFO] [stderr]    Compiling blocking v1.0.2
[INFO] [stderr]    Compiling async-global-executor v2.0.2
[INFO] [stderr]    Compiling async-std v1.10.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.38s
[INFO] running `Command { std: "docker" "inspect" "3bba87d41166590e547aaeb3686c4b59154b19354d343701e53c681403d95a17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3bba87d41166590e547aaeb3686c4b59154b19354d343701e53c681403d95a17", kill_on_drop: false }`
[INFO] [stdout] 3bba87d41166590e547aaeb3686c4b59154b19354d343701e53c681403d95a17
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 368764c33f70332599a8aec682976ec3b03fa16a671a75d215b506ea997720a2
[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" "368764c33f70332599a8aec682976ec3b03fa16a671a75d215b506ea997720a2", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling syn v1.0.58
[INFO] [stderr]    Compiling getrandom v0.2.1
[INFO] [stderr]    Compiling proc-macro-nested v0.1.6
[INFO] [stderr]    Compiling serde v1.0.119
[INFO] [stderr]    Compiling futures-sink v0.3.9
[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]    Compiling serde_derive v1.0.119
[INFO] [stderr]    Compiling futures-task v0.3.9
[INFO] [stderr]    Compiling futures-channel v0.3.9
[INFO] [stderr]    Compiling rand_core v0.6.1
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling rand_xorshift v0.3.0
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling rand v0.8.2
[INFO] [stderr]    Compiling tempfile v3.2.0
[INFO] [stderr]    Compiling futures-macro v0.3.9
[INFO] [stderr]    Compiling futures-util v0.3.9
[INFO] [stderr]    Compiling femme v2.1.1
[INFO] [stderr]    Compiling futures-executor v0.3.9
[INFO] [stderr]    Compiling futures v0.3.9
[INFO] [stderr]    Compiling async-std v1.10.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `async-std`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name channel --edition=2018 tests/channel.rs --error-format=json --json=diagnostic-rendered-ansi --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --test --cfg 'feature="alloc"' --cfg 'feature="async-channel"' --cfg 'feature="async-global-executor"' --cfg 'feature="async-io"' --cfg 'feature="async-lock"' --cfg 'feature="crossbeam-utils"' --cfg 'feature="default"' --cfg 'feature="futures-channel"' --cfg 'feature="futures-core"' --cfg 'feature="futures-io"' --cfg 'feature="futures-lite"' --cfg 'feature="gloo-timers"' --cfg 'feature="kv-log-macro"' --cfg 'feature="log"' --cfg 'feature="memchr"' --cfg 'feature="num_cpus"' --cfg 'feature="once_cell"' --cfg 'feature="pin-project-lite"' --cfg 'feature="pin-utils"' --cfg 'feature="slab"' --cfg 'feature="std"' --cfg 'feature="wasm-bindgen-futures"' -C metadata=bc288af340f600f6 -C extra-filename=-bc288af340f600f6 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern async_channel=/opt/rustwide/target/debug/deps/libasync_channel-5e72d207622598fe.rlib --extern async_global_executor=/opt/rustwide/target/debug/deps/libasync_global_executor-ed0a0875cd2defd3.rlib --extern async_io=/opt/rustwide/target/debug/deps/libasync_io-e42586df80095700.rlib --extern async_lock=/opt/rustwide/target/debug/deps/libasync_lock-9d3d89c6b8e330ae.rlib --extern async_std=/opt/rustwide/target/debug/deps/libasync_std-95c9b7a0e5bcbf93.rlib --extern crossbeam_utils=/opt/rustwide/target/debug/deps/libcrossbeam_utils-42ae04f8151980ef.rlib --extern femme=/opt/rustwide/target/debug/deps/libfemme-b35b7fe2e4439902.rlib --extern futures=/opt/rustwide/target/debug/deps/libfutures-a17020a3f862590a.rlib --extern futures_core=/opt/rustwide/target/debug/deps/libfutures_core-27b5f4a246cbe1bf.rlib --extern futures_io=/opt/rustwide/target/debug/deps/libfutures_io-054257f70999dfbc.rlib --extern futures_lite=/opt/rustwide/target/debug/deps/libfutures_lite-94df7ca5ebf947b5.rlib --extern kv_log_macro=/opt/rustwide/target/debug/deps/libkv_log_macro-0606fee01af65e8c.rlib --extern log=/opt/rustwide/target/debug/deps/liblog-79e36d61a08a8447.rlib --extern memchr=/opt/rustwide/target/debug/deps/libmemchr-9ac983291cce33e7.rlib --extern num_cpus=/opt/rustwide/target/debug/deps/libnum_cpus-475c32c55cde3993.rlib --extern once_cell=/opt/rustwide/target/debug/deps/libonce_cell-c3a2e8275cc34ecc.rlib --extern pin_project_lite=/opt/rustwide/target/debug/deps/libpin_project_lite-b9d2d58497d450ff.rlib --extern pin_utils=/opt/rustwide/target/debug/deps/libpin_utils-501725f4e360d46d.rlib --extern rand=/opt/rustwide/target/debug/deps/librand-7cb838ba80101633.rlib --extern rand_xorshift=/opt/rustwide/target/debug/deps/librand_xorshift-030a5c7a73cf3ba8.rlib --extern slab=/opt/rustwide/target/debug/deps/libslab-ee0db592f9db8068.rlib --extern tempfile=/opt/rustwide/target/debug/deps/libtempfile-502f8552ca23eee0.rlib --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "368764c33f70332599a8aec682976ec3b03fa16a671a75d215b506ea997720a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "368764c33f70332599a8aec682976ec3b03fa16a671a75d215b506ea997720a2", kill_on_drop: false }`
[INFO] [stdout] 368764c33f70332599a8aec682976ec3b03fa16a671a75d215b506ea997720a2