[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-1.37-6/sources/1.36.0/gh/Firehed/arcadecontrols"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/Firehed/arcadecontrols'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Firehed/arcadecontrols" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Firehed/arcadecontrols"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/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 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Firehed/arcadecontrols on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "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-1.37-6/sources/1.36.0/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-1.37-6/sources/beta-2019-07-23/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" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/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[INFO] the lockfile is outdated, regenerating it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" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing Firehed/arcadecontrols against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] f858748b2c0d353faf021365b9539ef84e4699149c2aef3b311242794b5c56e3
[INFO] running `"docker" "start" "-a" "f858748b2c0d353faf021365b9539ef84e4699149c2aef3b311242794b5c56e3"`
[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 5.97s
[INFO] running `"docker" "inspect" "f858748b2c0d353faf021365b9539ef84e4699149c2aef3b311242794b5c56e3"`
[INFO] running `"docker" "rm" "-f" "f858748b2c0d353faf021365b9539ef84e4699149c2aef3b311242794b5c56e3"`
[INFO] [stdout] f858748b2c0d353faf021365b9539ef84e4699149c2aef3b311242794b5c56e3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/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" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] fbb471a06aad369f3b5b67f767acd8841e4666edb5ce9ff44abe5f6a3b4ccad1
[INFO] running `"docker" "start" "-a" "fbb471a06aad369f3b5b67f767acd8841e4666edb5ce9ff44abe5f6a3b4ccad1"`
[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 1.02s
[INFO] running `"docker" "inspect" "fbb471a06aad369f3b5b67f767acd8841e4666edb5ce9ff44abe5f6a3b4ccad1"`
[INFO] running `"docker" "rm" "-f" "fbb471a06aad369f3b5b67f767acd8841e4666edb5ce9ff44abe5f6a3b4ccad1"`
[INFO] [stdout] fbb471a06aad369f3b5b67f767acd8841e4666edb5ce9ff44abe5f6a3b4ccad1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/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" "+beta-2019-07-23" "test" "--frozen"`
[INFO] [stdout] a2d79f38e1f3d8608411916e28bc584c2909d08b54600129fd02e7fd292d10a2
[INFO] running `"docker" "start" "-a" "a2d79f38e1f3d8608411916e28bc584c2909d08b54600129fd02e7fd292d10a2"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/arcade-7c179284d57ddb18
[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" "a2d79f38e1f3d8608411916e28bc584c2909d08b54600129fd02e7fd292d10a2"`
[INFO] running `"docker" "rm" "-f" "a2d79f38e1f3d8608411916e28bc584c2909d08b54600129fd02e7fd292d10a2"`
[INFO] [stdout] a2d79f38e1f3d8608411916e28bc584c2909d08b54600129fd02e7fd292d10a2