[INFO] crate mcp4725-rs 0.1.1 is already in cache
[INFO] extracting crate mcp4725-rs 0.1.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/mcp4725-rs/0.1.1
[INFO] extracting crate mcp4725-rs 0.1.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/mcp4725-rs/0.1.1
[INFO] validating manifest of mcp4725-rs-0.1.1 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of mcp4725-rs-0.1.1 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing mcp4725-rs-0.1.1
[INFO] finished frobbing mcp4725-rs-0.1.1
[INFO] frobbed toml for mcp4725-rs-0.1.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/mcp4725-rs/0.1.1/Cargo.toml
[INFO] started frobbing mcp4725-rs-0.1.1
[INFO] finished frobbing mcp4725-rs-0.1.1
[INFO] frobbed toml for mcp4725-rs-0.1.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/mcp4725-rs/0.1.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing mcp4725-rs-0.1.1 against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/mcp4725-rs/0.1.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 4e51963a9363ef621ee1f5eacba0ebab9149a02d5e729944bf80ad26791fd386
[INFO] running `"docker" "start" "-a" "4e51963a9363ef621ee1f5eacba0ebab9149a02d5e729944bf80ad26791fd386"`
[INFO] [stderr]    Compiling mcp4725-rs v0.1.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.24s
[INFO] running `"docker" "inspect" "4e51963a9363ef621ee1f5eacba0ebab9149a02d5e729944bf80ad26791fd386"`
[INFO] running `"docker" "rm" "-f" "4e51963a9363ef621ee1f5eacba0ebab9149a02d5e729944bf80ad26791fd386"`
[INFO] [stdout] 4e51963a9363ef621ee1f5eacba0ebab9149a02d5e729944bf80ad26791fd386
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/mcp4725-rs/0.1.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 4a8e1fbe3f52f39b4140c93977d1d6640fda9c737d2e77227d5f35f938d34eaa
[INFO] running `"docker" "start" "-a" "4a8e1fbe3f52f39b4140c93977d1d6640fda9c737d2e77227d5f35f938d34eaa"`
[INFO] [stderr]    Compiling mcp4725-rs v0.1.1 (/opt/crater/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 0.74s
[INFO] running `"docker" "inspect" "4a8e1fbe3f52f39b4140c93977d1d6640fda9c737d2e77227d5f35f938d34eaa"`
[INFO] running `"docker" "rm" "-f" "4a8e1fbe3f52f39b4140c93977d1d6640fda9c737d2e77227d5f35f938d34eaa"`
[INFO] [stdout] 4a8e1fbe3f52f39b4140c93977d1d6640fda9c737d2e77227d5f35f938d34eaa
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/mcp4725-rs/0.1.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] fa97cbf8e97cc7723ef9a461c744ac69c9d4cbd424144fad88b7812c19318ec8
[INFO] running `"docker" "start" "-a" "fa97cbf8e97cc7723ef9a461c744ac69c9d4cbd424144fad88b7812c19318ec8"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/mcp4725_rs-41351a023c8f8859
[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" "fa97cbf8e97cc7723ef9a461c744ac69c9d4cbd424144fad88b7812c19318ec8"`
[INFO] running `"docker" "rm" "-f" "fa97cbf8e97cc7723ef9a461c744ac69c9d4cbd424144fad88b7812c19318ec8"`
[INFO] [stdout] fa97cbf8e97cc7723ef9a461c744ac69c9d4cbd424144fad88b7812c19318ec8