[INFO] crate mcp4725-rs 0.1.1 is already in cache
[INFO] testing mcp4725-rs-0.1.1 against beta-2019-09-28 for beta-1.39-1
[INFO] extracting crate mcp4725-rs 0.1.1 into work/builds/worker-2/source
[INFO] validating manifest of crates.io crate mcp4725-rs 0.1.1 on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[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 work/builds/worker-2/source/Cargo.toml
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] e5ced5887876078c6bfb899c430541b34f23531866a38888b258b2f08ffb03cd
[INFO] running `"docker" "start" "-a" "e5ced5887876078c6bfb899c430541b34f23531866a38888b258b2f08ffb03cd"`
[INFO] [stderr]    Compiling mcp4725-rs v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.12s
[INFO] running `"docker" "inspect" "e5ced5887876078c6bfb899c430541b34f23531866a38888b258b2f08ffb03cd"`
[INFO] running `"docker" "rm" "-f" "e5ced5887876078c6bfb899c430541b34f23531866a38888b258b2f08ffb03cd"`
[INFO] [stdout] e5ced5887876078c6bfb899c430541b34f23531866a38888b258b2f08ffb03cd
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen" "--no-run"`
[INFO] [stdout] adc6631e77d4973e9cda1b043c96aa2d203c73a0ab1e61b17e7d8ee97728704b
[INFO] running `"docker" "start" "-a" "adc6631e77d4973e9cda1b043c96aa2d203c73a0ab1e61b17e7d8ee97728704b"`
[INFO] [stderr]    Compiling mcp4725-rs v0.1.1 (/opt/rustwide/workdir)
[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]     Finished dev [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `"docker" "inspect" "adc6631e77d4973e9cda1b043c96aa2d203c73a0ab1e61b17e7d8ee97728704b"`
[INFO] running `"docker" "rm" "-f" "adc6631e77d4973e9cda1b043c96aa2d203c73a0ab1e61b17e7d8ee97728704b"`
[INFO] [stdout] adc6631e77d4973e9cda1b043c96aa2d203c73a0ab1e61b17e7d8ee97728704b
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen"`
[INFO] [stdout] b1ebb4f5d45b3bc6102ce95e08eb39d3c54c44010b87ddc6a1723e488aa41f9e
[INFO] running `"docker" "start" "-a" "b1ebb4f5d45b3bc6102ce95e08eb39d3c54c44010b87ddc6a1723e488aa41f9e"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/mcp4725_rs-b60fd9fb7b7477f8
[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] [stderr]    Doc-tests mcp4725-rs
[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 `"docker" "inspect" "b1ebb4f5d45b3bc6102ce95e08eb39d3c54c44010b87ddc6a1723e488aa41f9e"`
[INFO] running `"docker" "rm" "-f" "b1ebb4f5d45b3bc6102ce95e08eb39d3c54c44010b87ddc6a1723e488aa41f9e"`
[INFO] [stdout] b1ebb4f5d45b3bc6102ce95e08eb39d3c54c44010b87ddc6a1723e488aa41f9e