[INFO] cloning repository https://github.com/nikomatsakis/rust-metrics
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nikomatsakis/rust-metrics" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnikomatsakis%2Frust-metrics", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnikomatsakis%2Frust-metrics'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 914edd36b864f217920fb9fcfa66b8645aa1b550
[INFO] testing nikomatsakis/rust-metrics against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnikomatsakis%2Frust-metrics" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nikomatsakis/rust-metrics 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 git repo https://github.com/nikomatsakis/rust-metrics
[INFO] finished tweaking git repo https://github.com/nikomatsakis/rust-metrics
[INFO] tweaked toml for git repo https://github.com/nikomatsakis/rust-metrics written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/nikomatsakis/rust-metrics 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded octocrab v0.9.1
[INFO] [stderr]   Downloaded curl-sys v0.4.44+curl-7.77.0
[INFO] [stderr]   Downloaded rust-playground-top-crates v0.1.0
[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" "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] 8d3d3e8bce9df29aae44dc19c38d0d3a9f7aa10c46dae47d8791c061ee056b9f
[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" "8d3d3e8bce9df29aae44dc19c38d0d3a9f7aa10c46dae47d8791c061ee056b9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8d3d3e8bce9df29aae44dc19c38d0d3a9f7aa10c46dae47d8791c061ee056b9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d3d3e8bce9df29aae44dc19c38d0d3a9f7aa10c46dae47d8791c061ee056b9f", kill_on_drop: false }`
[INFO] [stdout] 8d3d3e8bce9df29aae44dc19c38d0d3a9f7aa10c46dae47d8791c061ee056b9f
[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=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] b221d989bfce91e21a42388c3032e5cdbeea8bb5972ab1a265b4d385c5e2ff87
[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" "b221d989bfce91e21a42388c3032e5cdbeea8bb5972ab1a265b4d385c5e2ff87", kill_on_drop: false }`
[INFO] [stderr]    Compiling openssl v0.10.34
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling shell-escape v0.1.5
[INFO] [stderr]    Compiling hyperx v1.3.0
[INFO] [stderr]    Compiling opener v0.4.1
[INFO] [stderr]    Compiling semver v1.0.3
[INFO] [stderr]    Compiling indenter v0.3.3
[INFO] [stderr]    Compiling bytesize v1.0.1
[INFO] [stderr]    Compiling rustc-workspace-hack v1.0.0
[INFO] [stderr]    Compiling arc-swap v1.3.0
[INFO] [stderr]    Compiling im-rc v15.0.0
[INFO] [stderr]    Compiling thread_local v1.1.3
[INFO] [stderr]    Compiling vte v0.3.3
[INFO] [stderr]    Compiling tracing v0.1.26
[INFO] [stderr]    Compiling unicode-normalization v0.1.19
[INFO] [stderr]    Compiling jobserver v0.1.22
[INFO] [stderr]    Compiling parking_lot_core v0.8.3
[INFO] [stderr]    Compiling socket2 v0.4.0
[INFO] [stderr]    Compiling filetime v0.2.14
[INFO] [stderr]    Compiling object v0.25.2
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling mio v0.7.11
[INFO] [stderr]    Compiling rand_xoshiro v0.4.0
[INFO] [stderr]    Compiling eyre v0.6.5
[INFO] [stderr]    Compiling bitmaps v2.1.0
[INFO] [stderr]    Compiling combine v3.8.1
[INFO] [stderr]    Compiling itertools v0.10.1
[INFO] [stderr]    Compiling rand_core v0.6.2
[INFO] [stderr]    Compiling strip-ansi-escapes v0.1.0
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling cc v1.0.68
[INFO] [stderr]    Compiling tar v0.4.35
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling futures-macro v0.3.16
[INFO] [stderr]    Compiling snafu-derive v0.6.10
[INFO] [stderr]    Compiling fehler-macros v1.0.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling env_logger v0.8.4
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling pin-project v1.0.7
[INFO] [stderr]    Compiling tokio v1.6.1
[INFO] [stderr]    Compiling rand v0.8.3
[INFO] [stderr]    Compiling clap_derive v3.0.0-beta.2
[INFO] [stderr]    Compiling idna v0.2.3
[INFO] [stderr]    Compiling sized-chunks v0.6.5
[INFO] [stderr]    Compiling openssl-sys v0.9.63
[INFO] [stderr]    Compiling libz-sys v1.1.3
[INFO] [stderr]    Compiling libnghttp2-sys v0.1.6+1.43.0
[INFO] [stderr]    Compiling backtrace v0.3.60
[INFO] [stderr]    Compiling libssh2-sys v0.2.21
[INFO] [stderr]    Compiling curl-sys v0.4.44+curl-7.77.0
[INFO] [stderr]    Compiling libgit2-sys v0.12.21+1.1.0
[INFO] [stderr]    Compiling tempfile v3.2.0
[INFO] [stderr]    Compiling futures-util v0.3.16
[INFO] [stderr]    Compiling native-tls v0.2.7
[INFO] [stderr]    Compiling flate2 v1.0.20
[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-1.6.1/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="bytes"' --cfg 'feature="default"' --cfg 'feature="fs"' --cfg 'feature="full"' --cfg 'feature="io-std"' --cfg 'feature="io-util"' --cfg 'feature="libc"' --cfg 'feature="macros"' --cfg 'feature="memchr"' --cfg 'feature="mio"' --cfg 'feature="net"' --cfg 'feature="num_cpus"' --cfg 'feature="once_cell"' --cfg 'feature="parking_lot"' --cfg 'feature="process"' --cfg 'feature="rt"' --cfg 'feature="rt-multi-thread"' --cfg 'feature="signal"' --cfg 'feature="signal-hook-registry"' --cfg 'feature="sync"' --cfg 'feature="time"' --cfg 'feature="tokio-macros"' --cfg 'feature="winapi"' -C metadata=ad704af58a6135c7 -C extra-filename=-ad704af58a6135c7 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern bytes=/opt/rustwide/target/debug/deps/libbytes-5cd672cac86e9454.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-f2e916541e2d6658.rmeta --extern memchr=/opt/rustwide/target/debug/deps/libmemchr-1aeda76b47c773bc.rmeta --extern mio=/opt/rustwide/target/debug/deps/libmio-06fce3b7719fa589.rmeta --extern num_cpus=/opt/rustwide/target/debug/deps/libnum_cpus-8baa4290712c89da.rmeta --extern once_cell=/opt/rustwide/target/debug/deps/libonce_cell-05a60f3c03734a45.rmeta --extern parking_lot=/opt/rustwide/target/debug/deps/libparking_lot-837ed6819e9fcd72.rmeta --extern pin_project_lite=/opt/rustwide/target/debug/deps/libpin_project_lite-bc29cd12efb5d8c3.rmeta --extern signal_hook_registry=/opt/rustwide/target/debug/deps/libsignal_hook_registry-7ebdf2001bedcfb2.rmeta --extern tokio_macros=/opt/rustwide/target/debug/deps/libtokio_macros-213ddd187c2e0e23.so --cap-lints allow --cap-lints=warn --cfg tokio_track_caller` (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" "b221d989bfce91e21a42388c3032e5cdbeea8bb5972ab1a265b4d385c5e2ff87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b221d989bfce91e21a42388c3032e5cdbeea8bb5972ab1a265b4d385c5e2ff87", kill_on_drop: false }`
[INFO] [stdout] b221d989bfce91e21a42388c3032e5cdbeea8bb5972ab1a265b4d385c5e2ff87