[INFO] fetching crate mcp4725-rs 0.1.1...
[INFO] checking mcp4725-rs-0.1.1 against master#0599f3403366d9c57f0625e6de3af214b5042a90 for pr-87710
[INFO] extracting crate mcp4725-rs 0.1.1 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate mcp4725-rs 0.1.1 on toolchain 0599f3403366d9c57f0625e6de3af214b5042a90
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mcp4725-rs 0.1.1
[INFO] finished tweaking crates.io crate mcp4725-rs 0.1.1
[INFO] tweaked toml for crates.io crate mcp4725-rs 0.1.1 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+0599f3403366d9c57f0625e6de3af214b5042a90" "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] f6bbd619577c87a2a2695a7c68970e57a369ab0ef6a3167fb09a616cb14fe5cc
[INFO] running `Command { std: "docker" "start" "-a" "f6bbd619577c87a2a2695a7c68970e57a369ab0ef6a3167fb09a616cb14fe5cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f6bbd619577c87a2a2695a7c68970e57a369ab0ef6a3167fb09a616cb14fe5cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6bbd619577c87a2a2695a7c68970e57a369ab0ef6a3167fb09a616cb14fe5cc", kill_on_drop: false }`
[INFO] [stdout] f6bbd619577c87a2a2695a7c68970e57a369ab0ef6a3167fb09a616cb14fe5cc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+0599f3403366d9c57f0625e6de3af214b5042a90" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4e0655d54bc45b8227d58fa5acf217f123ef8e69d87b9c2d7ccbfbae0eed5a49
[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" "4e0655d54bc45b8227d58fa5acf217f123ef8e69d87b9c2d7ccbfbae0eed5a49", kill_on_drop: false }`
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking bitflags v0.4.0
[INFO] [stderr]     Checking bitflags v0.3.3
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling cast v0.2.7
[INFO] [stderr]     Checking embedded-hal v0.2.6
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]     Checking mcp4725-rs v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling nix v0.6.0
[INFO] [stderr]     Checking spidev v0.3.0
[INFO] [stderr]     Checking sysfs_gpio v0.5.4
[INFO] [stderr]     Checking i2cdev v0.4.4
[INFO] [stderr]     Checking linux-embedded-hal v0.2.2
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> examples/linux_raspi.rs:19:13
[INFO] [stdout]    |
[INFO] [stdout] 19 |             dac.set_dac_value(dac_code);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.92s
[INFO] running `Command { std: "docker" "inspect" "4e0655d54bc45b8227d58fa5acf217f123ef8e69d87b9c2d7ccbfbae0eed5a49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e0655d54bc45b8227d58fa5acf217f123ef8e69d87b9c2d7ccbfbae0eed5a49", kill_on_drop: false }`
[INFO] [stdout] 4e0655d54bc45b8227d58fa5acf217f123ef8e69d87b9c2d7ccbfbae0eed5a49