[INFO] fetching crate romio 0.3.0-alpha.10...
[INFO] checking romio-0.3.0-alpha.10 against master#c919f490bbcd2b29b74016101f7ec71aaa24bdbb for pr-79073
[INFO] extracting crate romio 0.3.0-alpha.10 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate romio 0.3.0-alpha.10 on toolchain c919f490bbcd2b29b74016101f7ec71aaa24bdbb
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate romio 0.3.0-alpha.10
[INFO] finished tweaking crates.io crate romio 0.3.0-alpha.10
[INFO] tweaked toml for crates.io crate romio 0.3.0-alpha.10 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate romio 0.3.0-alpha.10 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4efa34b6bb29e2c6f38873b491c7986a8949711fc5cf87ed73839a123f3853d6
[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" "4efa34b6bb29e2c6f38873b491c7986a8949711fc5cf87ed73839a123f3853d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4efa34b6bb29e2c6f38873b491c7986a8949711fc5cf87ed73839a123f3853d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4efa34b6bb29e2c6f38873b491c7986a8949711fc5cf87ed73839a123f3853d6", kill_on_drop: false }`
[INFO] [stdout] 4efa34b6bb29e2c6f38873b491c7986a8949711fc5cf87ed73839a123f3853d6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=forbid" "-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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b884fc64cc55b00628013255af37626333739ad17c50c61e3edb5e0c3f9fb509
[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" "b884fc64cc55b00628013255af37626333739ad17c50c61e3edb5e0c3f9fb509", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]     Checking cfg-if v0.1.6
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking lazy_static v1.2.0
[INFO] [stderr]    Compiling getrandom v0.1.12
[INFO] [stderr]     Checking futures-io-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking ppv-lite86 v0.2.5
[INFO] [stderr]     Checking smallvec v0.6.9
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]     Checking async-ready v3.0.0
[INFO] [stderr]     Checking remove_dir_all v0.5.1
[INFO] [stderr]     Checking async-datagram v3.0.0
[INFO] [stderr]     Checking lock_api v0.3.1
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]     Checking crossbeam-utils v0.6.5
[INFO] [stderr]     Checking futures-sink-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking futures-channel-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking env_logger v0.6.1
[INFO] [stderr]     Checking c2-chacha v0.2.2
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking num_cpus v1.10.0
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking bytes v0.4.11
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking mio v0.6.16
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.0
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking futures-executor-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking futures-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking romio v0.3.0-alpha.10 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.00s
[INFO] running `Command { std: "docker" "inspect" "b884fc64cc55b00628013255af37626333739ad17c50c61e3edb5e0c3f9fb509", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b884fc64cc55b00628013255af37626333739ad17c50c61e3edb5e0c3f9fb509", kill_on_drop: false }`
[INFO] [stdout] b884fc64cc55b00628013255af37626333739ad17c50c61e3edb5e0c3f9fb509