[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/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/Firehed/arcadecontrols"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/Firehed/arcadecontrols'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Firehed/arcadecontrols" "work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/Firehed/arcadecontrols"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/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 master#0f88167f89fffe321590c5148f21b7d51d44388d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Firehed/arcadecontrols on toolchain try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "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/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/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/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/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" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/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" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking Firehed/arcadecontrols against try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b for pr-58948
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58948/worker-4/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/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=forbid" "-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" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 4a2dc2e73c8fae446176cb1603e40d9dba4a03819f95e4f0521b7ce0789c8939
[INFO] running `"docker" "start" "-a" "4a2dc2e73c8fae446176cb1603e40d9dba4a03819f95e4f0521b7ce0789c8939"`
[INFO] [stderr]     Checking 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] 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 1.05s
[INFO] running `"docker" "inspect" "4a2dc2e73c8fae446176cb1603e40d9dba4a03819f95e4f0521b7ce0789c8939"`
[INFO] running `"docker" "rm" "-f" "4a2dc2e73c8fae446176cb1603e40d9dba4a03819f95e4f0521b7ce0789c8939"`
[INFO] [stdout] 4a2dc2e73c8fae446176cb1603e40d9dba4a03819f95e4f0521b7ce0789c8939