[INFO] updating cached repository https://github.com/christ776/Rust-Z80
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f89eac0939056c34a75367ce507ce342abc2a08d
[INFO] checking christ776/Rust-Z80 against try#e689e5eaefe96e6dc3ed5bb629c521b7d207aff7 for pr-64398
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchrist776%2FRust-Z80" "work/builds/worker-6/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/christ776/Rust-Z80 on toolchain e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/christ776/Rust-Z80
[INFO] finished tweaking git repo https://github.com/christ776/Rust-Z80
[INFO] tweaked toml for git repo https://github.com/christ776/Rust-Z80 written to work/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/christ776/Rust-Z80 already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] d5f05ce38d9af74dcb738e98cdc6fabf6efc5db8fdc3b3b984052f19253b084b
[INFO] running `"docker" "start" "-a" "d5f05ce38d9af74dcb738e98cdc6fabf6efc5db8fdc3b3b984052f19253b084b"`
[INFO] [stderr]     Checking Z80 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable `r` is assigned to, but never used
[INFO] [stderr]    --> src/z80.rs:420:13
[INFO] [stderr]     |
[INFO] [stderr] 420 |     let mut r = 0;
[INFO] [stderr]     |             ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr]     = note: consider using `_r` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `r` is never read
[INFO] [stderr]    --> src/z80.rs:423:9
[INFO] [stderr]     |
[INFO] [stderr] 423 |         r = self.a as u8;
[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: value assigned to `r` is never read
[INFO] [stderr]    --> src/z80.rs:594:15
[INFO] [stderr]     |
[INFO] [stderr] 594 |       let mut r = 0;
[INFO] [stderr]     |               ^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `res` is never read
[INFO] [stderr]    --> src/z80.rs:638:15
[INFO] [stderr]     |
[INFO] [stderr] 638 |       let mut res: u16 = 0;
[INFO] [stderr]     |               ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `r` is never read
[INFO] [stderr]    --> src/z80.rs:639:15
[INFO] [stderr]     |
[INFO] [stderr] 639 |       let mut r: u8 = 0;
[INFO] [stderr]     |               ^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `op`
[INFO] [stderr]    --> src/z80.rs:815:27
[INFO] [stderr]     |
[INFO] [stderr] 815 |   pub fn sub_n(&mut self, op: u8) {
[INFO] [stderr]     |                           ^^ help: consider prefixing with an underscore: `_op`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `op`
[INFO] [stderr]    --> src/z80.rs:955:27
[INFO] [stderr]     |
[INFO] [stderr] 955 |   pub fn xor_r(&mut self, op: u8) {
[INFO] [stderr]     |                           ^^ help: consider prefixing with an underscore: `_op`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `result` is never read
[INFO] [stderr]    --> src/z80.rs:972:13
[INFO] [stderr]     |
[INFO] [stderr] 972 |     let mut result = 0;
[INFO] [stderr]     |             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `incr` is never read
[INFO] [stderr]     --> src/z80.rs:1134:15
[INFO] [stderr]      |
[INFO] [stderr] 1134 |       let mut incr = 0;
[INFO] [stderr]      |               ^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `r` is never read
[INFO] [stderr]     --> src/z80.rs:1135:15
[INFO] [stderr]      |
[INFO] [stderr] 1135 |       let mut r = 0;
[INFO] [stderr]      |               ^
[INFO] [stderr]      |
[INFO] [stderr]      = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/z80.rs:419:9
[INFO] [stderr]     |
[INFO] [stderr] 419 |     let mut res = 0;
[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: crate `Z80` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `z80`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `r` is assigned to, but never used
[INFO] [stderr]    --> src/z80.rs:420:13
[INFO] [stderr]     |
[INFO] [stderr] 420 |     let mut r = 0;
[INFO] [stderr]     |             ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr]     = note: consider using `_r` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `r` is never read
[INFO] [stderr]    --> src/z80.rs:423:9
[INFO] [stderr]     |
[INFO] [stderr] 423 |         r = self.a as u8;
[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: value assigned to `r` is never read
[INFO] [stderr]    --> src/z80.rs:594:15
[INFO] [stderr]     |
[INFO] [stderr] 594 |       let mut r = 0;
[INFO] [stderr]     |               ^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `res` is never read
[INFO] [stderr]    --> src/z80.rs:638:15
[INFO] [stderr]     |
[INFO] [stderr] 638 |       let mut res: u16 = 0;
[INFO] [stderr]     |               ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `r` is never read
[INFO] [stderr]    --> src/z80.rs:639:15
[INFO] [stderr]     |
[INFO] [stderr] 639 |       let mut r: u8 = 0;
[INFO] [stderr]     |               ^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `op`
[INFO] [stderr]    --> src/z80.rs:815:27
[INFO] [stderr]     |
[INFO] [stderr] 815 |   pub fn sub_n(&mut self, op: u8) {
[INFO] [stderr]     |                           ^^ help: consider prefixing with an underscore: `_op`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `op`
[INFO] [stderr]    --> src/z80.rs:955:27
[INFO] [stderr]     |
[INFO] [stderr] 955 |   pub fn xor_r(&mut self, op: u8) {
[INFO] [stderr]     |                           ^^ help: consider prefixing with an underscore: `_op`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `result` is never read
[INFO] [stderr]    --> src/z80.rs:972:13
[INFO] [stderr]     |
[INFO] [stderr] 972 |     let mut result = 0;
[INFO] [stderr]     |             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `incr` is never read
[INFO] [stderr]     --> src/z80.rs:1134:15
[INFO] [stderr]      |
[INFO] [stderr] 1134 |       let mut incr = 0;
[INFO] [stderr]      |               ^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `r` is never read
[INFO] [stderr]     --> src/z80.rs:1135:15
[INFO] [stderr]      |
[INFO] [stderr] 1135 |       let mut r = 0;
[INFO] [stderr]      |               ^
[INFO] [stderr]      |
[INFO] [stderr]      = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/z80.rs:419:9
[INFO] [stderr]     |
[INFO] [stderr] 419 |     let mut res = 0;
[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: crate `Z80` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `z80`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `r` is assigned to, but never used
[INFO] [stderr]    --> src/z80.rs:420:13
[INFO] [stderr]     |
[INFO] [stderr] 420 |     let mut r = 0;
[INFO] [stderr]     |             ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr]     = note: consider using `_r` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `r` is never read
[INFO] [stderr]    --> src/z80.rs:423:9
[INFO] [stderr]     |
[INFO] [stderr] 423 |         r = self.a as u8;
[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: value assigned to `r` is never read
[INFO] [stderr]    --> src/z80.rs:594:15
[INFO] [stderr]     |
[INFO] [stderr] 594 |       let mut r = 0;
[INFO] [stderr]     |               ^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `res` is never read
[INFO] [stderr]    --> src/z80.rs:638:15
[INFO] [stderr]     |
[INFO] [stderr] 638 |       let mut res: u16 = 0;
[INFO] [stderr]     |               ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `r` is never read
[INFO] [stderr]    --> src/z80.rs:639:15
[INFO] [stderr]     |
[INFO] [stderr] 639 |       let mut r: u8 = 0;
[INFO] [stderr]     |               ^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `op`
[INFO] [stderr]    --> src/z80.rs:815:27
[INFO] [stderr]     |
[INFO] [stderr] 815 |   pub fn sub_n(&mut self, op: u8) {
[INFO] [stderr]     |                           ^^ help: consider prefixing with an underscore: `_op`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `op`
[INFO] [stderr]    --> src/z80.rs:955:27
[INFO] [stderr]     |
[INFO] [stderr] 955 |   pub fn xor_r(&mut self, op: u8) {
[INFO] [stderr]     |                           ^^ help: consider prefixing with an underscore: `_op`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `result` is never read
[INFO] [stderr]    --> src/z80.rs:972:13
[INFO] [stderr]     |
[INFO] [stderr] 972 |     let mut result = 0;
[INFO] [stderr]     |             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `incr` is never read
[INFO] [stderr]     --> src/z80.rs:1134:15
[INFO] [stderr]      |
[INFO] [stderr] 1134 |       let mut incr = 0;
[INFO] [stderr]      |               ^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `r` is never read
[INFO] [stderr]     --> src/z80.rs:1135:15
[INFO] [stderr]      |
[INFO] [stderr] 1135 |       let mut r = 0;
[INFO] [stderr]      |               ^
[INFO] [stderr]      |
[INFO] [stderr]      = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/z80.rs:419:9
[INFO] [stderr]     |
[INFO] [stderr] 419 |     let mut res = 0;
[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: variable `r` is assigned to, but never used
[INFO] [stderr]    --> src/z80.rs:420:13
[INFO] [stderr]     |
[INFO] [stderr] 420 |     let mut r = 0;
[INFO] [stderr]     |             ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr]     = note: consider using `_r` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `r` is never read
[INFO] [stderr]    --> src/z80.rs:423:9
[INFO] [stderr]     |
[INFO] [stderr] 423 |         r = self.a as u8;
[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: value assigned to `r` is never read
[INFO] [stderr]    --> src/z80.rs:594:15
[INFO] [stderr]     |
[INFO] [stderr] 594 |       let mut r = 0;
[INFO] [stderr]     |               ^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `res` is never read
[INFO] [stderr]    --> src/z80.rs:638:15
[INFO] [stderr]     |
[INFO] [stderr] 638 |       let mut res: u16 = 0;
[INFO] [stderr]     |               ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `r` is never read
[INFO] [stderr]    --> src/z80.rs:639:15
[INFO] [stderr]     |
[INFO] [stderr] 639 |       let mut r: u8 = 0;
[INFO] [stderr]     |               ^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `op`
[INFO] [stderr]    --> src/z80.rs:815:27
[INFO] [stderr]     |
[INFO] [stderr] 815 |   pub fn sub_n(&mut self, op: u8) {
[INFO] [stderr]     |                           ^^ help: consider prefixing with an underscore: `_op`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `op`
[INFO] [stderr]    --> src/z80.rs:955:27
[INFO] [stderr]     |
[INFO] [stderr] 955 |   pub fn xor_r(&mut self, op: u8) {
[INFO] [stderr]     |                           ^^ help: consider prefixing with an underscore: `_op`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `result` is never read
[INFO] [stderr]    --> src/z80.rs:972:13
[INFO] [stderr]     |
[INFO] [stderr] 972 |     let mut result = 0;
[INFO] [stderr]     |             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `incr` is never read
[INFO] [stderr]     --> src/z80.rs:1134:15
[INFO] [stderr]      |
[INFO] [stderr] 1134 |       let mut incr = 0;
[INFO] [stderr]      |               ^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `r` is never read
[INFO] [stderr]     --> src/z80.rs:1135:15
[INFO] [stderr]      |
[INFO] [stderr] 1135 |       let mut r = 0;
[INFO] [stderr]      |               ^
[INFO] [stderr]      |
[INFO] [stderr]      = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/z80.rs:419:9
[INFO] [stderr]     |
[INFO] [stderr] 419 |     let mut res = 0;
[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]     Finished dev [unoptimized + debuginfo] target(s) in 5.41s
[INFO] running `"docker" "inspect" "d5f05ce38d9af74dcb738e98cdc6fabf6efc5db8fdc3b3b984052f19253b084b"`
[INFO] running `"docker" "rm" "-f" "d5f05ce38d9af74dcb738e98cdc6fabf6efc5db8fdc3b3b984052f19253b084b"`
[INFO] [stdout] d5f05ce38d9af74dcb738e98cdc6fabf6efc5db8fdc3b3b984052f19253b084b