[INFO] fetching crate stream_multiplexer 0.16.1...
[INFO] checking stream_multiplexer-0.16.1 against beta for pr-78714
[INFO] extracting crate stream_multiplexer 0.16.1 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate stream_multiplexer 0.16.1 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate stream_multiplexer 0.16.1
[INFO] finished tweaking crates.io crate stream_multiplexer 0.16.1
[INFO] tweaked toml for crates.io crate stream_multiplexer 0.16.1 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+beta" "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] 16728715e78852894086d383b474311d4068a00d7d0e4038890505fd6651ea22
[INFO] running `Command { std: "docker" "start" "-a" "16728715e78852894086d383b474311d4068a00d7d0e4038890505fd6651ea22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "16728715e78852894086d383b474311d4068a00d7d0e4038890505fd6651ea22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16728715e78852894086d383b474311d4068a00d7d0e4038890505fd6651ea22", kill_on_drop: false }`
[INFO] [stdout] 16728715e78852894086d383b474311d4068a00d7d0e4038890505fd6651ea22
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4ca5f2f4b3f6ee6363e991b6e42c55ed41a0c1c3add6cadf260c2bcc165b6f16
[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" "4ca5f2f4b3f6ee6363e991b6e42c55ed41a0c1c3add6cadf260c2bcc165b6f16", kill_on_drop: false }`
[INFO] [stderr]     Checking vec-arena v0.5.2
[INFO] [stderr]     Checking easy-parallel v3.1.0
[INFO] [stderr]     Checking sharded-slab v0.0.9
[INFO] [stderr]     Checking tokio v0.2.22
[INFO] [stderr]     Checking multitask v0.2.0
[INFO] [stderr]     Checking socket2 v0.3.16
[INFO] [stderr]     Checking polling v0.1.9
[INFO] [stderr]     Checking alto_logger v0.3.7
[INFO] [stderr]     Checking futures-lite v0.1.11
[INFO] [stderr]     Checking futures-util v0.3.8
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking async-io v0.1.11
[INFO] [stderr]     Checking blocking v0.5.2
[INFO] [stderr]     Checking async-executor v0.1.2
[INFO] [stderr]     Checking smol v0.3.3
[INFO] [stderr]     Checking stream_multiplexer v0.16.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.96s
[INFO] running `Command { std: "docker" "inspect" "4ca5f2f4b3f6ee6363e991b6e42c55ed41a0c1c3add6cadf260c2bcc165b6f16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ca5f2f4b3f6ee6363e991b6e42c55ed41a0c1c3add6cadf260c2bcc165b6f16", kill_on_drop: false }`
[INFO] [stdout] 4ca5f2f4b3f6ee6363e991b6e42c55ed41a0c1c3add6cadf260c2bcc165b6f16