[INFO] fetching crate tab-websocket 0.5.0...
[INFO] checking tab-websocket-0.5.0 against try#b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b for pr-82781
[INFO] extracting crate tab-websocket 0.5.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate tab-websocket 0.5.0 on toolchain b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tab-websocket 0.5.0
[INFO] finished tweaking crates.io crate tab-websocket 0.5.0
[INFO] tweaked toml for crates.io crate tab-websocket 0.5.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded lifeline v0.4.0
[INFO] [stderr]   Downloaded owned-alloc v0.2.0
[INFO] [stderr]   Downloaded lockfree v0.5.1
[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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aae978000884df5be7a3018a742c8d832569f9c2f1ec2b36389608297ff4ce3e
[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" "aae978000884df5be7a3018a742c8d832569f9c2f1ec2b36389608297ff4ce3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aae978000884df5be7a3018a742c8d832569f9c2f1ec2b36389608297ff4ce3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aae978000884df5be7a3018a742c8d832569f9c2f1ec2b36389608297ff4ce3e", kill_on_drop: false }`
[INFO] [stdout] aae978000884df5be7a3018a742c8d832569f9c2f1ec2b36389608297ff4ce3e
[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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e73b939189dc3cbbcab1641291f41ca54aa315d89b295c52d649e6d31c663aec
[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" "e73b939189dc3cbbcab1641291f41ca54aa315d89b295c52d649e6d31c663aec", kill_on_drop: false }`
[INFO] [stderr]    Compiling pin-project-internal v0.4.27
[INFO] [stderr]     Checking owned-alloc v0.2.0
[INFO] [stderr]     Checking arc-swap v0.4.8
[INFO] [stderr]     Checking input_buffer v0.3.1
[INFO] [stderr]    Compiling syn v1.0.64
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]     Checking signal-hook-registry v1.3.0
[INFO] [stderr]     Checking bincode v1.3.2
[INFO] [stderr]     Checking sha-1 v0.9.4
[INFO] [stderr]     Checking lockfree v0.5.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]     Checking tungstenite v0.11.1
[INFO] [stderr]    Compiling futures-macro v0.3.13
[INFO] [stderr]    Compiling tokio-macros v0.2.6
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]    Compiling async-trait v0.1.48
[INFO] [stderr]     Checking tokio v0.2.25
[INFO] [stderr]     Checking futures-util v0.3.13
[INFO] [stderr]     Checking thiserror v1.0.24
[INFO] [stderr]     Checking pin-project v0.4.27
[INFO] [stderr]     Checking tokio-test v0.2.1
[INFO] [stderr]     Checking futures-executor v0.3.13
[INFO] [stderr]     Checking async-tungstenite v0.8.0
[INFO] [stderr]     Checking lifeline v0.4.0
[INFO] [stderr]     Checking futures v0.3.13
[INFO] [stderr]     Checking tab-websocket v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 32.53s
[INFO] running `Command { std: "docker" "inspect" "e73b939189dc3cbbcab1641291f41ca54aa315d89b295c52d649e6d31c663aec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e73b939189dc3cbbcab1641291f41ca54aa315d89b295c52d649e6d31c663aec", kill_on_drop: false }`
[INFO] [stdout] e73b939189dc3cbbcab1641291f41ca54aa315d89b295c52d649e6d31c663aec