[INFO] fetching crate unmp-link-serial 0.3.3...
[INFO] checking unmp-link-serial-0.3.3 against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] extracting crate unmp-link-serial 0.3.3 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate unmp-link-serial 0.3.3 on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate unmp-link-serial 0.3.3
[INFO] finished tweaking crates.io crate unmp-link-serial 0.3.3
[INFO] tweaked toml for crates.io crate unmp-link-serial 0.3.3 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serial-windows v0.4.0
[INFO] [stderr]   Downloaded serial v0.4.0
[INFO] [stderr]   Downloaded eds v0.4.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7650aab845677b1c148c71a8d0f930a5a4a0f9e1cf04a8c89027dbdf71f30b72
[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" "7650aab845677b1c148c71a8d0f930a5a4a0f9e1cf04a8c89027dbdf71f30b72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7650aab845677b1c148c71a8d0f930a5a4a0f9e1cf04a8c89027dbdf71f30b72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7650aab845677b1c148c71a8d0f930a5a4a0f9e1cf04a8c89027dbdf71f30b72", kill_on_drop: false }`
[INFO] [stdout] 7650aab845677b1c148c71a8d0f930a5a4a0f9e1cf04a8c89027dbdf71f30b72
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] dac54093dd7c52d323d0185a2eefbb25f942f3bfde71e92d8002329c0d6fd19f
[INFO] running `Command { std: "docker" "start" "-a" "dac54093dd7c52d323d0185a2eefbb25f942f3bfde71e92d8002329c0d6fd19f", kill_on_drop: false }`
[INFO] [stderr]    Compiling crc16 v0.4.0
[INFO] [stderr]     Checking fixed-queue v0.3.9
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]     Checking futures-core v0.3.14
[INFO] [stderr]     Checking async-task v4.0.3
[INFO] [stderr]     Checking unmp-id v1.4.0
[INFO] [stderr]     Checking termios v0.2.2
[INFO] [stderr]     Checking serial-core v0.4.0
[INFO] [stderr]     Checking spin v0.9.0
[INFO] [stderr]     Checking ioctl-rs v0.1.6
[INFO] [stderr]     Checking futures-intrusive v0.4.0
[INFO] [stderr]     Checking serial-unix v0.4.0
[INFO] [stderr]     Checking serial v0.4.0
[INFO] [stderr]     Checking eds v0.4.4
[INFO] [stderr]     Checking task-stream v0.3.2
[INFO] [stderr]     Checking unmp v0.4.5
[INFO] [stderr]     Checking unmp-link-serial v0.3.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.92s
[INFO] running `Command { std: "docker" "inspect" "dac54093dd7c52d323d0185a2eefbb25f942f3bfde71e92d8002329c0d6fd19f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dac54093dd7c52d323d0185a2eefbb25f942f3bfde71e92d8002329c0d6fd19f", kill_on_drop: false }`
[INFO] [stdout] dac54093dd7c52d323d0185a2eefbb25f942f3bfde71e92d8002329c0d6fd19f