[INFO] fetching crate fast-async-mutex 0.6.5...
[INFO] checking fast-async-mutex-0.6.5 against master#c9228570668803e3e6402770d55f23a12c9ae686 for pr-79472
[INFO] extracting crate fast-async-mutex 0.6.5 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate fast-async-mutex 0.6.5 on toolchain c9228570668803e3e6402770d55f23a12c9ae686
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fast-async-mutex 0.6.5
[INFO] finished tweaking crates.io crate fast-async-mutex 0.6.5
[INFO] tweaked toml for crates.io crate fast-async-mutex 0.6.5 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+c9228570668803e3e6402770d55f23a12c9ae686" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 90a09ca1d5a51591c4af57fab2d874c22bfd2a61dfb1fa6889523c7b0a20a177
[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" "90a09ca1d5a51591c4af57fab2d874c22bfd2a61dfb1fa6889523c7b0a20a177", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "90a09ca1d5a51591c4af57fab2d874c22bfd2a61dfb1fa6889523c7b0a20a177", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90a09ca1d5a51591c4af57fab2d874c22bfd2a61dfb1fa6889523c7b0a20a177", kill_on_drop: false }`
[INFO] [stdout] 90a09ca1d5a51591c4af57fab2d874c22bfd2a61dfb1fa6889523c7b0a20a177
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f9be63be736f69e29747dcaec77b91f708f44bc8aef95bd1227c0f8326b565cf
[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" "f9be63be736f69e29747dcaec77b91f708f44bc8aef95bd1227c0f8326b565cf", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.54
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling proc-macro-nested v0.1.6
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]     Checking futures-sink v0.3.8
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking futures-io v0.3.8
[INFO] [stderr]     Checking bytes v0.6.0
[INFO] [stderr]     Checking fast-async-mutex v0.6.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]    Compiling tokio v0.3.5
[INFO] [stderr]     Checking lock_api v0.4.2
[INFO] [stderr]     Checking futures-channel v0.3.8
[INFO] [stderr]     Checking futures-task v0.3.8
[INFO] [stderr]     Checking parking_lot_core v0.8.1
[INFO] [stderr]     Checking signal-hook-registry v1.2.2
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking mio v0.7.6
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]    Compiling pin-project-internal v1.0.2
[INFO] [stderr]    Compiling futures-macro v0.3.8
[INFO] [stderr]    Compiling tokio-macros v0.3.1
[INFO] [stderr]     Checking pin-project v1.0.2
[INFO] [stderr]     Checking futures-util v0.3.8
[INFO] [stderr]     Checking futures-executor v0.3.8
[INFO] [stderr]     Checking futures v0.3.8
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 36.65s
[INFO] running `Command { std: "docker" "inspect" "f9be63be736f69e29747dcaec77b91f708f44bc8aef95bd1227c0f8326b565cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9be63be736f69e29747dcaec77b91f708f44bc8aef95bd1227c0f8326b565cf", kill_on_drop: false }`
[INFO] [stdout] f9be63be736f69e29747dcaec77b91f708f44bc8aef95bd1227c0f8326b565cf