[INFO] fetching crate mcp4725-rs 0.1.1...
[INFO] testing mcp4725-rs-0.1.1 against 1.49.0 for beta-1.50-1
[INFO] extracting crate mcp4725-rs 0.1.1 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate mcp4725-rs 0.1.1 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", 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-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 61c7ca2473fe0bb7cdc5d824d342b90be2e31f9baa4882bcbc930ed948c3a4a6
[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" "61c7ca2473fe0bb7cdc5d824d342b90be2e31f9baa4882bcbc930ed948c3a4a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "61c7ca2473fe0bb7cdc5d824d342b90be2e31f9baa4882bcbc930ed948c3a4a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61c7ca2473fe0bb7cdc5d824d342b90be2e31f9baa4882bcbc930ed948c3a4a6", kill_on_drop: false }`
[INFO] [stdout] 61c7ca2473fe0bb7cdc5d824d342b90be2e31f9baa4882bcbc930ed948c3a4a6
[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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9b45c28c40311482e79f0e24ee1d108e0052b450277f9b3aeb822572eab13ceb
[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" "9b45c28c40311482e79f0e24ee1d108e0052b450277f9b3aeb822572eab13ceb", kill_on_drop: false }`
[INFO] [stderr]    Compiling mcp4725-rs v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "9b45c28c40311482e79f0e24ee1d108e0052b450277f9b3aeb822572eab13ceb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b45c28c40311482e79f0e24ee1d108e0052b450277f9b3aeb822572eab13ceb", kill_on_drop: false }`
[INFO] [stdout] 9b45c28c40311482e79f0e24ee1d108e0052b450277f9b3aeb822572eab13ceb
[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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5c740897cd62b4bbe7b8be9313f7727bc5467d5a9fbee22e496940de6d9497d9
[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" "5c740897cd62b4bbe7b8be9313f7727bc5467d5a9fbee22e496940de6d9497d9", kill_on_drop: false }`
[INFO] [stderr]    Compiling mcp4725-rs v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `std::result::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 test [unoptimized + debuginfo] target(s) in 1.74s
[INFO] running `Command { std: "docker" "inspect" "5c740897cd62b4bbe7b8be9313f7727bc5467d5a9fbee22e496940de6d9497d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c740897cd62b4bbe7b8be9313f7727bc5467d5a9fbee22e496940de6d9497d9", kill_on_drop: false }`
[INFO] [stdout] 5c740897cd62b4bbe7b8be9313f7727bc5467d5a9fbee22e496940de6d9497d9
[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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", 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] 656b9bf5b04858c12838322f3a5b8579f34b2dfe0a2e9b2fc7ef1f07ebd6bdfd
[INFO] running `Command { std: "docker" "start" "-a" "656b9bf5b04858c12838322f3a5b8579f34b2dfe0a2e9b2fc7ef1f07ebd6bdfd", kill_on_drop: false }`
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> examples/linux_raspi.rs:19:13
[INFO] [stderr]    |
[INFO] [stderr] 19 |             dac.set_dac_value(dac_code);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/mcp4725_rs-780213eb9ee1634d
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests mcp4725-rs
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "656b9bf5b04858c12838322f3a5b8579f34b2dfe0a2e9b2fc7ef1f07ebd6bdfd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "656b9bf5b04858c12838322f3a5b8579f34b2dfe0a2e9b2fc7ef1f07ebd6bdfd", kill_on_drop: false }`
[INFO] [stdout] 656b9bf5b04858c12838322f3a5b8579f34b2dfe0a2e9b2fc7ef1f07ebd6bdfd