[INFO] fetching crate vedirect 0.1.0...
[INFO] checking vedirect-0.1.0 against try#05c8870159e4f328578a970e125aa76d24f03b56 for pr-76219
[INFO] extracting crate vedirect 0.1.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate vedirect 0.1.0 on toolchain 05c8870159e4f328578a970e125aa76d24f03b56
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+05c8870159e4f328578a970e125aa76d24f03b56" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate vedirect 0.1.0
[INFO] finished tweaking crates.io crate vedirect 0.1.0
[INFO] tweaked toml for crates.io crate vedirect 0.1.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate vedirect 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+05c8870159e4f328578a970e125aa76d24f03b56" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+05c8870159e4f328578a970e125aa76d24f03b56" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 52defdc756dd1909ae28a0f5b97877c0a38a00f7aa1b5acdac22e7fca87b276a
[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" "52defdc756dd1909ae28a0f5b97877c0a38a00f7aa1b5acdac22e7fca87b276a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "52defdc756dd1909ae28a0f5b97877c0a38a00f7aa1b5acdac22e7fca87b276a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52defdc756dd1909ae28a0f5b97877c0a38a00f7aa1b5acdac22e7fca87b276a", kill_on_drop: false }`
[INFO] [stdout] 52defdc756dd1909ae28a0f5b97877c0a38a00f7aa1b5acdac22e7fca87b276a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+05c8870159e4f328578a970e125aa76d24f03b56" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fbcaadbdf21c448a1c9e4e6b90e75a28c2e5f16d81e105dc73256089384e3780
[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" "fbcaadbdf21c448a1c9e4e6b90e75a28c2e5f16d81e105dc73256089384e3780", kill_on_drop: false }`
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]     Checking static_assertions v0.3.4
[INFO] [stderr]    Compiling anyhow v1.0.27
[INFO] [stderr]    Compiling nom v5.1.1
[INFO] [stderr]    Compiling lexical-core v0.6.7
[INFO] [stderr]     Checking termios v0.2.2
[INFO] [stderr]     Checking ioctl-rs v0.1.6
[INFO] [stderr]     Checking serial-core v0.4.0
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]     Checking serial-unix v0.4.0
[INFO] [stderr]     Checking serial v0.4.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.11
[INFO] [stderr]     Checking thiserror v1.0.11
[INFO] [stderr]     Checking vedirect v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `r`
[INFO] [stdout]   --> examples/read_serial.rs:15:13
[INFO] [stdout]    |
[INFO] [stdout] 15 |         let r = port.read(&mut buf)?;
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.02s
[INFO] running `Command { std: "docker" "inspect" "fbcaadbdf21c448a1c9e4e6b90e75a28c2e5f16d81e105dc73256089384e3780", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fbcaadbdf21c448a1c9e4e6b90e75a28c2e5f16d81e105dc73256089384e3780", kill_on_drop: false }`
[INFO] [stdout] fbcaadbdf21c448a1c9e4e6b90e75a28c2e5f16d81e105dc73256089384e3780