[INFO] fetching crate cranko 0.3.4...
[INFO] testing cranko-0.3.4 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate cranko 0.3.4 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate cranko 0.3.4 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 cranko 0.3.4
[INFO] finished tweaking crates.io crate cranko 0.3.4
[INFO] tweaked toml for crates.io crate cranko 0.3.4 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate cranko 0.3.4 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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded configparser v1.0.0
[INFO] [stderr]   Downloaded derive-enum-error v0.0.1
[INFO] [stderr]   Downloaded dynfmt v0.1.4
[INFO] [stderr]   Downloaded git-url-parse v0.2.0
[INFO] [stderr]   Downloaded target-lexicon v0.11.0
[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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ca6845b6ac8c856f72b8bc3bf1de5667c5ffb42c9a61cbdb46928fbab9da371f
[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" "ca6845b6ac8c856f72b8bc3bf1de5667c5ffb42c9a61cbdb46928fbab9da371f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ca6845b6ac8c856f72b8bc3bf1de5667c5ffb42c9a61cbdb46928fbab9da371f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca6845b6ac8c856f72b8bc3bf1de5667c5ffb42c9a61cbdb46928fbab9da371f", kill_on_drop: false }`
[INFO] [stdout] ca6845b6ac8c856f72b8bc3bf1de5667c5ffb42c9a61cbdb46928fbab9da371f
[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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 32982c1cf0788a689aef33a25453336fa2ec9e38f7877c51c570d58befeee8ab
[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" "32982c1cf0788a689aef33a25453336fa2ec9e38f7877c51c570d58befeee8ab", kill_on_drop: false }`
[INFO] [stderr]    Compiling ahash v0.3.8
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling target-lexicon v0.11.0
[INFO] [stderr]    Compiling fsio v0.1.3
[INFO] [stderr]    Compiling either v1.6.0
[INFO] [stderr]    Compiling podio v0.1.7
[INFO] [stderr]    Compiling configparser v1.0.0
[INFO] [stderr]    Compiling json v0.12.4
[INFO] [stderr]    Compiling hashbrown v0.8.2
[INFO] [stderr]    Compiling indexmap v1.5.1
[INFO] [stderr]    Compiling tracing-core v0.1.14
[INFO] [stderr]    Compiling futures-channel v0.3.5
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling textwrap v0.12.1
[INFO] [stderr]    Compiling miniz_oxide v0.4.1
[INFO] [stderr]    Compiling jobserver v0.1.21
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling filetime v0.2.12
[INFO] [stderr]    Compiling xattr v0.2.2
[INFO] [stderr]    Compiling dirs-sys v0.3.5
[INFO] [stderr]    Compiling terminal_size v0.1.13
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling combine v3.8.1
[INFO] [stderr]    Compiling cc v1.0.58
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling tokio v0.2.22
[INFO] [stderr]    Compiling tracing v0.1.19
[INFO] [stderr]    Compiling tar v0.4.30
[INFO] [stderr]    Compiling dirs v3.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]    Compiling strum_macros v0.18.0
[INFO] [stderr]    Compiling chrono v0.4.15
[INFO] [stderr]    Compiling flate2 v1.0.17
[INFO] [stderr]    Compiling tempdir v0.3.7
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling futures-util v0.3.5
[INFO] [stderr]    Compiling lru v0.6.0
[INFO] [stderr]    Compiling zip v0.5.6
[INFO] [stderr]    Compiling structopt-derive v0.4.9
[INFO] [stderr]    Compiling envmnt v0.8.4
[INFO] [stderr]    Compiling petgraph v0.5.1
[INFO] [stderr]    Compiling openssl-sys v0.9.58
[INFO] [stderr]    Compiling libz-sys v1.0.27
[INFO] [stderr]    Compiling libssh2-sys v0.2.18
[INFO] [stderr]    Compiling libgit2-sys v0.12.9+1.0.1
[INFO] [stderr]    Compiling ci_info v0.10.2
[INFO] [stderr]    Compiling openssl v0.10.30
[INFO] [stderr]    Compiling native-tls v0.2.4
[INFO] [stderr]    Compiling tokio-util v0.3.1
[INFO] [stderr]    Compiling git-url-parse v0.2.0
[INFO] [stderr] error: could not compile `tokio`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name tokio --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.22/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="blocking"' --cfg 'feature="default"' --cfg 'feature="fnv"' --cfg 'feature="futures-core"' --cfg 'feature="io-driver"' --cfg 'feature="io-util"' --cfg 'feature="iovec"' --cfg 'feature="lazy_static"' --cfg 'feature="memchr"' --cfg 'feature="mio"' --cfg 'feature="num_cpus"' --cfg 'feature="rt-core"' --cfg 'feature="rt-threaded"' --cfg 'feature="slab"' --cfg 'feature="stream"' --cfg 'feature="sync"' --cfg 'feature="tcp"' --cfg 'feature="time"' -C metadata=43f55e6b3a629d38 -C extra-filename=-43f55e6b3a629d38 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern bytes=/opt/rustwide/target/debug/deps/libbytes-ae8e0e99d586d290.rmeta --extern fnv=/opt/rustwide/target/debug/deps/libfnv-9bab2cd4d16544dd.rmeta --extern futures_core=/opt/rustwide/target/debug/deps/libfutures_core-558f3951e09ad2ea.rmeta --extern iovec=/opt/rustwide/target/debug/deps/libiovec-a3969879621bf748.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-b2d06f7d60fcbb27.rmeta --extern memchr=/opt/rustwide/target/debug/deps/libmemchr-90bac19b7815f3a4.rmeta --extern mio=/opt/rustwide/target/debug/deps/libmio-10d1fd8e37c292d9.rmeta --extern num_cpus=/opt/rustwide/target/debug/deps/libnum_cpus-1630f5d1ed56db99.rmeta --extern pin_project_lite=/opt/rustwide/target/debug/deps/libpin_project_lite-e5c99df355e3e2ea.rmeta --extern slab=/opt/rustwide/target/debug/deps/libslab-f568091877b30548.rmeta --cap-lints allow --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" "32982c1cf0788a689aef33a25453336fa2ec9e38f7877c51c570d58befeee8ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "32982c1cf0788a689aef33a25453336fa2ec9e38f7877c51c570d58befeee8ab", kill_on_drop: false }`
[INFO] [stdout] 32982c1cf0788a689aef33a25453336fa2ec9e38f7877c51c570d58befeee8ab