[INFO] updating cached repository evantypanski/gremulator
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/evantypanski/gremulator
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/evantypanski/gremulator" "work/ex/pr-58592/sources/master#f66e4697ae286985ddefc53c3a047614568458bb/gh/evantypanski/gremulator"`
[INFO] [stderr] Cloning into 'work/ex/pr-58592/sources/master#f66e4697ae286985ddefc53c3a047614568458bb/gh/evantypanski/gremulator'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/evantypanski/gremulator" "work/ex/pr-58592/sources/try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a/gh/evantypanski/gremulator"`
[INFO] [stderr] Cloning into 'work/ex/pr-58592/sources/try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a/gh/evantypanski/gremulator'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7490ba17796aba4e992e44818a17c9fd1758fb12
[INFO] sha for GitHub repo evantypanski/gremulator: 7490ba17796aba4e992e44818a17c9fd1758fb12
[INFO] validating manifest of evantypanski/gremulator on toolchain master#f66e4697ae286985ddefc53c3a047614568458bb
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+f66e4697ae286985ddefc53c3a047614568458bb-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of evantypanski/gremulator on toolchain try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c3b22200e6f5b70eb1f99ae6944d989ae17a458a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing evantypanski/gremulator
[INFO] finished frobbing evantypanski/gremulator
[INFO] frobbed toml for evantypanski/gremulator written to work/ex/pr-58592/sources/master#f66e4697ae286985ddefc53c3a047614568458bb/gh/evantypanski/gremulator/Cargo.toml
[INFO] started frobbing evantypanski/gremulator
[INFO] finished frobbing evantypanski/gremulator
[INFO] frobbed toml for evantypanski/gremulator written to work/ex/pr-58592/sources/try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a/gh/evantypanski/gremulator/Cargo.toml
[INFO] crate evantypanski/gremulator has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+f66e4697ae286985ddefc53c3a047614568458bb-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c3b22200e6f5b70eb1f99ae6944d989ae17a458a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking evantypanski/gremulator against master#f66e4697ae286985ddefc53c3a047614568458bb for pr-58592
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58592/worker-6/master#f66e4697ae286985ddefc53c3a047614568458bb:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58592/sources/master#f66e4697ae286985ddefc53c3a047614568458bb/gh/evantypanski/gremulator:/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" "+f66e4697ae286985ddefc53c3a047614568458bb-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c53eccec3fef0fbc20eac9165686145d02171b56313b2e61fe98365cbb5030e1
[INFO] running `"docker" "start" "-a" "c53eccec3fef0fbc20eac9165686145d02171b56313b2e61fe98365cbb5030e1"`
[INFO] [stderr]     Checking gremulator v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/register.rs:57:12
[INFO] [stderr]    |
[INFO] [stderr] 57 |         if (set) { self.f |= (1 << offset);  }
[INFO] [stderr]    |            ^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/register.rs:57:30
[INFO] [stderr]    |
[INFO] [stderr] 57 |         if (set) { self.f |= (1 << offset);  }
[INFO] [stderr]    |                              ^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/register.rs:57:12
[INFO] [stderr]    |
[INFO] [stderr] 57 |         if (set) { self.f |= (1 << offset);  }
[INFO] [stderr]    |            ^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/register.rs:57:30
[INFO] [stderr]    |
[INFO] [stderr] 57 |         if (set) { self.f |= (1 << offset);  }
[INFO] [stderr]    |                              ^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `other`
[INFO] [stderr]    --> src/cpu.rs:204:13
[INFO] [stderr]     |
[INFO] [stderr] 204 |             other => panic!("Instruction not implemented!"),
[INFO] [stderr]     |             ^^^^^ help: consider prefixing with an underscore: `_other`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `other`
[INFO] [stderr]    --> src/cpu.rs:204:13
[INFO] [stderr]     |
[INFO] [stderr] 204 |             other => panic!("Instruction not implemented!"),
[INFO] [stderr]     |             ^^^^^ help: consider prefixing with an underscore: `_other`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/cpu.rs:215:13
[INFO] [stderr]     |
[INFO] [stderr] 215 |         let mut cpu = CPU::new();
[INFO] [stderr]     |             ----^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `a`
[INFO] [stderr]  --> src/mmu.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 |     a: u8,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: comparison is useless due to type limits
[INFO] [stderr]   --> src/cpu.rs:53:15
[INFO] [stderr]    |
[INFO] [stderr] 53 |         set = self.registers.a + val > 0xff;
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_comparisons)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `halted`
[INFO] [stderr]  --> src/cpu.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     halted:     bool,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `a`
[INFO] [stderr]  --> src/mmu.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 |     a: u8,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: comparison is useless due to type limits
[INFO] [stderr]   --> src/cpu.rs:53:15
[INFO] [stderr]    |
[INFO] [stderr] 53 |         set = self.registers.a + val > 0xff;
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_comparisons)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/mbc.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |         file.read_to_end(&mut contents);
[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] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/mbc.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |         file.read_to_end(&mut contents);
[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 0.95s
[INFO] running `"docker" "inspect" "c53eccec3fef0fbc20eac9165686145d02171b56313b2e61fe98365cbb5030e1"`
[INFO] running `"docker" "rm" "-f" "c53eccec3fef0fbc20eac9165686145d02171b56313b2e61fe98365cbb5030e1"`
[INFO] [stdout] c53eccec3fef0fbc20eac9165686145d02171b56313b2e61fe98365cbb5030e1