[INFO] updating cached repository Firehed/arcadecontrols
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Firehed/arcadecontrols
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Firehed/arcadecontrols" "work/ex/beta-1.38-1/sources/1.37.0/gh/Firehed/arcadecontrols"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Firehed/arcadecontrols'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Firehed/arcadecontrols" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Firehed/arcadecontrols"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Firehed/arcadecontrols'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9a14f951e4dcd5d0a8f29abdc4390fd219b6612e
[INFO] sha for GitHub repo Firehed/arcadecontrols: 9a14f951e4dcd5d0a8f29abdc4390fd219b6612e
[INFO] validating manifest of Firehed/arcadecontrols 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 Firehed/arcadecontrols 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 Firehed/arcadecontrols
[INFO] finished frobbing Firehed/arcadecontrols
[INFO] frobbed toml for Firehed/arcadecontrols written to work/ex/beta-1.38-1/sources/1.37.0/gh/Firehed/arcadecontrols/Cargo.toml
[INFO] started frobbing Firehed/arcadecontrols
[INFO] finished frobbing Firehed/arcadecontrols
[INFO] frobbed toml for Firehed/arcadecontrols written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Firehed/arcadecontrols/Cargo.toml
[INFO] crate Firehed/arcadecontrols already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Firehed/arcadecontrols/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[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 Firehed/arcadecontrols 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-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Firehed/arcadecontrols:/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] 9c96456876ac52d3a060b6e7417f34cdc7175f54c8d0f5551003f2a92244713e
[INFO] running `"docker" "start" "-a" "9c96456876ac52d3a060b6e7417f34cdc7175f54c8d0f5551003f2a92244713e"`
[INFO] [stderr]    Compiling rust-ini v0.13.0
[INFO] [stderr]    Compiling nix v0.5.1
[INFO] [stderr]    Compiling arcade v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]   --> src/i2c/mod.rs:76:5
[INFO] [stderr]    |
[INFO] [stderr] 76 |     let fd = file.as_raw_fd();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unreachable_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `parsed`
[INFO] [stderr]   --> src/config/mod.rs:56:19
[INFO] [stderr]    |
[INFO] [stderr] 56 |         .map(|(i, parsed)| {
[INFO] [stderr]    |                   ^^^^^^ help: consider prefixing with an underscore: `_parsed`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `bank` is never read
[INFO] [stderr]   --> src/mcp23017/mod.rs:88:17
[INFO] [stderr]    |
[INFO] [stderr] 88 |         let mut bank = set_chip_to_bank1(&mut i2c);
[INFO] [stderr]    |                 ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_assignments)] on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `file`
[INFO] [stderr]   --> src/i2c/mod.rs:73:22
[INFO] [stderr]    |
[INFO] [stderr] 73 | fn set_slave_address(file: &File, slave_address: Address) -> Result<(), nix::Error> {
[INFO] [stderr]    |                      ^^^^ help: consider prefixing with an underscore: `_file`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `slave_address`
[INFO] [stderr]   --> src/i2c/mod.rs:73:35
[INFO] [stderr]    |
[INFO] [stderr] 73 | fn set_slave_address(file: &File, slave_address: Address) -> Result<(), nix::Error> {
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_slave_address`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.49s
[INFO] running `"docker" "inspect" "9c96456876ac52d3a060b6e7417f34cdc7175f54c8d0f5551003f2a92244713e"`
[INFO] running `"docker" "rm" "-f" "9c96456876ac52d3a060b6e7417f34cdc7175f54c8d0f5551003f2a92244713e"`
[INFO] [stdout] 9c96456876ac52d3a060b6e7417f34cdc7175f54c8d0f5551003f2a92244713e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Firehed/arcadecontrols:/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] 6fd853efc60e17a53da02837117f4bae88360f83ecae8ea3d68f6511b03db5e3
[INFO] running `"docker" "start" "-a" "6fd853efc60e17a53da02837117f4bae88360f83ecae8ea3d68f6511b03db5e3"`
[INFO] [stderr]    Compiling arcade v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]   --> src/i2c/mod.rs:76:5
[INFO] [stderr]    |
[INFO] [stderr] 76 |     let fd = file.as_raw_fd();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unreachable_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `parsed`
[INFO] [stderr]   --> src/config/mod.rs:56:19
[INFO] [stderr]    |
[INFO] [stderr] 56 |         .map(|(i, parsed)| {
[INFO] [stderr]    |                   ^^^^^^ help: consider prefixing with an underscore: `_parsed`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `bank` is never read
[INFO] [stderr]   --> src/mcp23017/mod.rs:88:17
[INFO] [stderr]    |
[INFO] [stderr] 88 |         let mut bank = set_chip_to_bank1(&mut i2c);
[INFO] [stderr]    |                 ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_assignments)] on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `file`
[INFO] [stderr]   --> src/i2c/mod.rs:73:22
[INFO] [stderr]    |
[INFO] [stderr] 73 | fn set_slave_address(file: &File, slave_address: Address) -> Result<(), nix::Error> {
[INFO] [stderr]    |                      ^^^^ help: consider prefixing with an underscore: `_file`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `slave_address`
[INFO] [stderr]   --> src/i2c/mod.rs:73:35
[INFO] [stderr]    |
[INFO] [stderr] 73 | fn set_slave_address(file: &File, slave_address: Address) -> Result<(), nix::Error> {
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_slave_address`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.74s
[INFO] running `"docker" "inspect" "6fd853efc60e17a53da02837117f4bae88360f83ecae8ea3d68f6511b03db5e3"`
[INFO] running `"docker" "rm" "-f" "6fd853efc60e17a53da02837117f4bae88360f83ecae8ea3d68f6511b03db5e3"`
[INFO] [stdout] 6fd853efc60e17a53da02837117f4bae88360f83ecae8ea3d68f6511b03db5e3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Firehed/arcadecontrols:/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] f8077d999b01e6004ebc0a78899be899ba17f57595e41a0c527f7f62aec9eab4
[INFO] running `"docker" "start" "-a" "f8077d999b01e6004ebc0a78899be899ba17f57595e41a0c527f7f62aec9eab4"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/arcade-5b8922f98b01bc85
[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" "f8077d999b01e6004ebc0a78899be899ba17f57595e41a0c527f7f62aec9eab4"`
[INFO] running `"docker" "rm" "-f" "f8077d999b01e6004ebc0a78899be899ba17f57595e41a0c527f7f62aec9eab4"`
[INFO] [stdout] f8077d999b01e6004ebc0a78899be899ba17f57595e41a0c527f7f62aec9eab4