[INFO] fetching crate futures_ringbuf 0.3.1...
[INFO] checking futures_ringbuf-0.3.1 against try#ddfd70ee3c3748e597b32f416b0d15a4f6e37685 for pr-87050
[INFO] extracting crate futures_ringbuf 0.3.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate futures_ringbuf 0.3.1 on toolchain ddfd70ee3c3748e597b32f416b0d15a4f6e37685
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate futures_ringbuf 0.3.1
[INFO] finished tweaking crates.io crate futures_ringbuf 0.3.1
[INFO] tweaked toml for crates.io crate futures_ringbuf 0.3.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate futures_ringbuf 0.3.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ergo-pin v0.1.0
[INFO] [stderr]   Downloaded futures-test v0.3.15
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] db32f82af0187b7e4119ff533ad6a0342f1d74ddd0f736c46c7ddd4530b4ece0
[INFO] running `Command { std: "docker" "start" "-a" "db32f82af0187b7e4119ff533ad6a0342f1d74ddd0f736c46c7ddd4530b4ece0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "db32f82af0187b7e4119ff533ad6a0342f1d74ddd0f736c46c7ddd4530b4ece0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db32f82af0187b7e4119ff533ad6a0342f1d74ddd0f736c46c7ddd4530b4ece0", kill_on_drop: false }`
[INFO] [stdout] db32f82af0187b7e4119ff533ad6a0342f1d74ddd0f736c46c7ddd4530b4ece0
[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=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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8da27a2e9e36614efb0e4a79ab171139226537ace3ec17f671b9c477fcc190c1
[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" "8da27a2e9e36614efb0e4a79ab171139226537ace3ec17f671b9c477fcc190c1", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling futures-core v0.3.15
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking pin-project-lite v0.2.6
[INFO] [stderr]     Checking futures-io v0.3.15
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]     Checking slab v0.4.3
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling futures-task v0.3.15
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]    Compiling futures-channel v0.3.15
[INFO] [stderr]     Checking futures-sink v0.3.15
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking fastrand v1.4.1
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]     Checking parking v2.0.0
[INFO] [stderr]    Compiling semver v1.0.3
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]     Checking bytes v1.0.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking ringbuf v0.2.5
[INFO] [stderr]     Checking async-lock v2.4.0
[INFO] [stderr]     Checking socket2 v0.4.0
[INFO] [stderr]    Compiling value-bag v1.0.0-alpha.7
[INFO] [stderr]    Compiling futures-macro v0.3.15
[INFO] [stderr]    Compiling futures-util v0.3.15
[INFO] [stderr]    Compiling tokio v1.6.1
[INFO] [stderr]     Checking futures-lite v1.12.0
[INFO] [stderr]     Checking async-channel v1.6.1
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling futures_ringbuf v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking blocking v1.0.2
[INFO] [stderr]     Checking async-executor v1.4.1
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]    Compiling ctor v0.1.20
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]    Compiling pin-project-internal v1.0.7
[INFO] [stderr]    Compiling async-attributes v1.1.2
[INFO] [stderr]    Compiling ergo-pin v0.1.0
[INFO] [stderr]    Compiling darling v0.10.2
[INFO] [stderr]    Compiling log-derive v0.4.1
[INFO] [stderr]     Checking polling v2.0.3
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]     Checking tokio-util v0.6.7
[INFO] [stderr]     Checking async-io v1.4.1
[INFO] [stderr]     Checking pin-project v1.0.7
[INFO] [stderr]     Checking async-global-executor v2.0.2
[INFO] [stderr]     Checking async-std v1.9.0
[INFO] [stderr]     Checking futures-executor v0.3.15
[INFO] [stderr]     Checking asynchronous-codec v0.6.0
[INFO] [stderr]     Checking futures v0.3.15
[INFO] [stderr]     Checking futures-test v0.3.15
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 37.62s
[INFO] running `Command { std: "docker" "inspect" "8da27a2e9e36614efb0e4a79ab171139226537ace3ec17f671b9c477fcc190c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8da27a2e9e36614efb0e4a79ab171139226537ace3ec17f671b9c477fcc190c1", kill_on_drop: false }`
[INFO] [stdout] 8da27a2e9e36614efb0e4a79ab171139226537ace3ec17f671b9c477fcc190c1