[INFO] fetching crate chip_8 0.3.1...
[INFO] testing chip_8-0.3.1 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-7
[INFO] extracting crate chip_8 0.3.1 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate chip_8 0.3.1
[INFO] finished tweaking crates.io crate chip_8 0.3.1
[INFO] tweaked toml for crates.io crate chip_8 0.3.1 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate chip_8 0.3.1 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 97 packages to latest compatible versions
[INFO] [stderr]       Adding proptest v0.10.1 (available: v1.9.0)
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.2)
[INFO] [stderr]       Adding thiserror v1.0.69 (available: v2.0.17)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0f3d523651b7a06d4133e673dee875cc0f9069d72c2b64af18011994e5d3638f
[INFO] running `Command { std: "docker" "start" "-a" "0f3d523651b7a06d4133e673dee875cc0f9069d72c2b64af18011994e5d3638f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0f3d523651b7a06d4133e673dee875cc0f9069d72c2b64af18011994e5d3638f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f3d523651b7a06d4133e673dee875cc0f9069d72c2b64af18011994e5d3638f", kill_on_drop: false }`
[INFO] [stdout] 0f3d523651b7a06d4133e673dee875cc0f9069d72c2b64af18011994e5d3638f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b95b425d149674e59f67e9c7f834e47ab2c1560eecd4b6a032134e082c32588f
[INFO] running `Command { std: "docker" "start" "-a" "b95b425d149674e59f67e9c7f834e47ab2c1560eecd4b6a032134e082c32588f", kill_on_drop: false }`
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling chip_8 v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]   --> src/keypad.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     #[must_use]
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/keypad.rs:132:5
[INFO] [stdout]     |
[INFO] [stdout] 132 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/keypad.rs:139:5
[INFO] [stdout]     |
[INFO] [stdout] 139 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/keypad.rs:146:5
[INFO] [stdout]     |
[INFO] [stdout] 146 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]   --> src/vm.rs:84:5
[INFO] [stdout]    |
[INFO] [stdout] 84 |     #[must_use]
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `i` and `pc` are never read
[INFO] [stdout]   --> src/vm.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | struct Registers {
[INFO] [stdout]    |        --------- fields in this struct
[INFO] [stdout] 29 |     vregisters: [VRegisterValue; 16], // TODO: Use variant_count for constant?
[INFO] [stdout] 30 |     i: IRegisterValue,
[INFO] [stdout]    |     ^
[INFO] [stdout] 31 |     pc: PCRegisterValue,
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Registers` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `registers`, `rng`, `sys_fn`, `keypad`, `waiting_on_any_keypress`, and `display` are never read
[INFO] [stdout]   --> src/vm.rs:71:5
[INFO] [stdout]    |
[INFO] [stdout] 70 | pub struct VM<R: Rng> {
[INFO] [stdout]    |            -- fields in this struct
[INFO] [stdout] 71 |     registers: Registers,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 72 |     rng: R,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 73 |     sys_fn: fn(&mut Self, crate::instructions::Addr) -> crate::errors::Result<()>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 74 |     keypad: crate::keypad::Keypad,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 75 |     waiting_on_any_keypress: Option<VRegister>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 76 |     memory: Memory,
[INFO] [stdout] 77 |     display: Display,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `execute_instruction` is never used
[INFO] [stdout]    --> src/vm.rs:123:8
[INFO] [stdout]     |
[INFO] [stdout]  94 | / impl<R> VM<R>
[INFO] [stdout]  95 | | where
[INFO] [stdout]  96 | |     R: rand::Rng,
[INFO] [stdout]     | |_________________- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 123 |       fn execute_instruction(&mut self, instruction: &Instruction) -> crate::errors::Result<()> {
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.71s
[INFO] running `Command { std: "docker" "inspect" "b95b425d149674e59f67e9c7f834e47ab2c1560eecd4b6a032134e082c32588f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b95b425d149674e59f67e9c7f834e47ab2c1560eecd4b6a032134e082c32588f", kill_on_drop: false }`
[INFO] [stdout] b95b425d149674e59f67e9c7f834e47ab2c1560eecd4b6a032134e082c32588f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4acc2cd77d9b34c6ea30a02c41cf46be00bcf32edc664b94724070366835f4bc
[INFO] running `Command { std: "docker" "start" "-a" "4acc2cd77d9b34c6ea30a02c41cf46be00bcf32edc664b94724070366835f4bc", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.103
[INFO] [stderr]    Compiling quote v1.0.42
[INFO] [stderr]    Compiling regex-syntax v0.8.8
[INFO] [stderr]    Compiling pulldown-cmark v0.9.6
[INFO] [stderr]    Compiling winnow v0.5.40
[INFO] [stderr]    Compiling once_cell v1.21.3
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling rand_xorshift v0.2.0
[INFO] [stderr]    Compiling semver v1.0.27
[INFO] [stderr]    Compiling tempfile v3.23.0
[INFO] [stderr]    Compiling bit-set v0.5.3
[INFO] [stderr]    Compiling rusty-fork v0.3.1
[INFO] [stderr]    Compiling syn v2.0.110
[INFO] [stderr]    Compiling proptest v0.10.1
[INFO] [stderr]    Compiling regex-automata v0.4.13
[INFO] [stderr]    Compiling synstructure v0.13.2
[INFO] [stderr]    Compiling regex v1.12.2
[INFO] [stderr]    Compiling zerovec-derive v0.11.2
[INFO] [stderr]    Compiling displaydoc v0.2.5
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling zerofrom-derive v0.1.6
[INFO] [stderr]    Compiling yoke-derive v0.8.1
[INFO] [stderr]    Compiling zerofrom v0.1.6
[INFO] [stderr]    Compiling yoke v0.8.1
[INFO] [stderr]    Compiling zerotrie v0.2.3
[INFO] [stderr]    Compiling zerovec v0.11.5
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling chip_8 v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]   --> src/keypad.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     #[must_use]
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/keypad.rs:132:5
[INFO] [stdout]     |
[INFO] [stdout] 132 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/keypad.rs:139:5
[INFO] [stdout]     |
[INFO] [stdout] 139 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/keypad.rs:146:5
[INFO] [stdout]     |
[INFO] [stdout] 146 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]   --> src/vm.rs:84:5
[INFO] [stdout]    |
[INFO] [stdout] 84 |     #[must_use]
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `i` and `pc` are never read
[INFO] [stdout]   --> src/vm.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | struct Registers {
[INFO] [stdout]    |        --------- fields in this struct
[INFO] [stdout] 29 |     vregisters: [VRegisterValue; 16], // TODO: Use variant_count for constant?
[INFO] [stdout] 30 |     i: IRegisterValue,
[INFO] [stdout]    |     ^
[INFO] [stdout] 31 |     pc: PCRegisterValue,
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Registers` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `registers`, `rng`, `sys_fn`, `keypad`, `waiting_on_any_keypress`, and `display` are never read
[INFO] [stdout]   --> src/vm.rs:71:5
[INFO] [stdout]    |
[INFO] [stdout] 70 | pub struct VM<R: Rng> {
[INFO] [stdout]    |            -- fields in this struct
[INFO] [stdout] 71 |     registers: Registers,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 72 |     rng: R,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 73 |     sys_fn: fn(&mut Self, crate::instructions::Addr) -> crate::errors::Result<()>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 74 |     keypad: crate::keypad::Keypad,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 75 |     waiting_on_any_keypress: Option<VRegister>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 76 |     memory: Memory,
[INFO] [stdout] 77 |     display: Display,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `execute_instruction` is never used
[INFO] [stdout]    --> src/vm.rs:123:8
[INFO] [stdout]     |
[INFO] [stdout]  94 | / impl<R> VM<R>
[INFO] [stdout]  95 | | where
[INFO] [stdout]  96 | |     R: rand::Rng,
[INFO] [stdout]     | |_________________- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 123 |       fn execute_instruction(&mut self, instruction: &Instruction) -> crate::errors::Result<()> {
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling tinystr v0.8.2
[INFO] [stderr]    Compiling potential_utf v0.1.4
[INFO] [stderr]    Compiling icu_collections v2.1.1
[INFO] [stderr]    Compiling icu_locale_core v2.1.1
[INFO] [stderr]    Compiling icu_provider v2.1.1
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling icu_properties v2.1.1
[INFO] [stderr]    Compiling icu_normalizer v2.1.1
[INFO] [stderr]    Compiling serde_spanned v0.6.9
[INFO] [stderr]    Compiling toml_datetime v0.6.11
[INFO] [stderr]    Compiling toml_edit v0.19.15
[INFO] [stderr]    Compiling idna_adapter v1.2.1
[INFO] [stderr]    Compiling idna v1.1.0
[INFO] [stderr]    Compiling url v2.5.7
[INFO] [stderr]    Compiling toml v0.7.8
[INFO] [stderr]    Compiling version-sync v0.9.5
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]   --> src/keypad.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     #[must_use]
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/keypad.rs:132:5
[INFO] [stdout]     |
[INFO] [stdout] 132 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/keypad.rs:139:5
[INFO] [stdout]     |
[INFO] [stdout] 139 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/keypad.rs:146:5
[INFO] [stdout]     |
[INFO] [stdout] 146 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]   --> src/vm.rs:84:5
[INFO] [stdout]    |
[INFO] [stdout] 84 |     #[must_use]
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 23.48s
[INFO] running `Command { std: "docker" "inspect" "4acc2cd77d9b34c6ea30a02c41cf46be00bcf32edc664b94724070366835f4bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4acc2cd77d9b34c6ea30a02c41cf46be00bcf32edc664b94724070366835f4bc", kill_on_drop: false }`
[INFO] [stdout] 4acc2cd77d9b34c6ea30a02c41cf46be00bcf32edc664b94724070366835f4bc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d3fb85bbdc1a5c78034a86e8af127cf4a9996a737102aaece324e8b2da88c291
[INFO] running `Command { std: "docker" "start" "-a" "d3fb85bbdc1a5c78034a86e8af127cf4a9996a737102aaece324e8b2da88c291", kill_on_drop: false }`
[INFO] [stderr] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stderr]   --> src/keypad.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     #[must_use]
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[INFO] [stderr]    = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stderr]    --> src/keypad.rs:132:5
[INFO] [stderr]     |
[INFO] [stderr] 132 |     #[must_use]
[INFO] [stderr]     |     ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]     = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[INFO] [stderr] 
[INFO] [stderr] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stderr]    --> src/keypad.rs:139:5
[INFO] [stderr]     |
[INFO] [stderr] 139 |     #[must_use]
[INFO] [stderr]     |     ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]     = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[INFO] [stderr] 
[INFO] [stderr] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stderr]    --> src/keypad.rs:146:5
[INFO] [stderr]     |
[INFO] [stderr] 146 |     #[must_use]
[INFO] [stderr]     |     ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]     = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[INFO] [stderr] 
[INFO] [stderr] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stderr]   --> src/vm.rs:84:5
[INFO] [stderr]    |
[INFO] [stderr] 84 |     #[must_use]
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[INFO] [stderr] 
[INFO] [stderr] warning: fields `i` and `pc` are never read
[INFO] [stderr]   --> src/vm.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 28 | struct Registers {
[INFO] [stderr]    |        --------- fields in this struct
[INFO] [stderr] 29 |     vregisters: [VRegisterValue; 16], // TODO: Use variant_count for constant?
[INFO] [stderr] 30 |     i: IRegisterValue,
[INFO] [stderr]    |     ^
[INFO] [stderr] 31 |     pc: PCRegisterValue,
[INFO] [stderr]    |     ^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Registers` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: fields `registers`, `rng`, `sys_fn`, `keypad`, `waiting_on_any_keypress`, and `display` are never read
[INFO] [stderr]   --> src/vm.rs:71:5
[INFO] [stderr]    |
[INFO] [stderr] 70 | pub struct VM<R: Rng> {
[INFO] [stderr]    |            -- fields in this struct
[INFO] [stderr] 71 |     registers: Registers,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 72 |     rng: R,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 73 |     sys_fn: fn(&mut Self, crate::instructions::Addr) -> crate::errors::Result<()>,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 74 |     keypad: crate::keypad::Keypad,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 75 |     waiting_on_any_keypress: Option<VRegister>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 76 |     memory: Memory,
[INFO] [stderr] 77 |     display: Display,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `execute_instruction` is never used
[INFO] [stderr]    --> src/vm.rs:123:8
[INFO] [stderr]     |
[INFO] [stderr]  94 | / impl<R> VM<R>
[INFO] [stderr]  95 | | where
[INFO] [stderr]  96 | |     R: rand::Rng,
[INFO] [stderr]     | |_________________- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 123 |       fn execute_instruction(&mut self, instruction: &Instruction) -> crate::errors::Result<()> {
[INFO] [stderr]     |          ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `chip_8` (lib) generated 8 warnings (run `cargo fix --lib -p chip_8` to apply 5 suggestions)
[INFO] [stderr] warning: `chip_8` (lib test) generated 5 warnings (5 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/chip_8-0e4c770a5da5bc04)
[INFO] [stdout] 
[INFO] [stdout] running 95 tests
[INFO] [stdout] test display::tests::display_draw_drawn ... ok
[INFO] [stdout] test display::tests::display_draw_overdrawn ... ok
[INFO] [stdout] test display::tests::sprite_display ... ok
[INFO] [stdout] test display::tests::sprite_from_u8_slice ... ok
[INFO] [stdout] test display::tests::spriterow_from_u8 ... ok
[INFO] [stdout] test display::tests::xcoordinate_wrappingadd ... ok
[INFO] [stdout] test display::tests::xcoordinate_new ... ok
[INFO] [stdout] test display::tests::ycoordinate_wrappingadd ... ok
[INFO] [stdout] test instructions::tests::decode_add ... ok
[INFO] [stdout] test instructions::tests::decode_addi ... ok
[INFO] [stdout] test display::tests::ycoordinate_new ... ok
[INFO] [stdout] test instructions::tests::decode_add_operand ... ok
[INFO] [stdout] test instructions::tests::decode_and ... ok
[INFO] [stdout] test instructions::tests::decode_call ... ok
[INFO] [stdout] test instructions::tests::decode_clear ... ok
[INFO] [stdout] test instructions::tests::decode_draw ... ok
[INFO] [stdout] test instructions::tests::decode_load_i ... ok
[INFO] [stdout] test display::tests::display_clear ... ok
[INFO] [stdout] test instructions::tests::decode_jump ... ok
[INFO] [stdout] test instructions::tests::decode_load ... ok
[INFO] [stdout] test instructions::tests::decode_load_operand ... ok
[INFO] [stdout] test instructions::tests::decode_loadbinarycodeddecimal ... ok
[INFO] [stdout] test instructions::tests::decode_loadmemoryregisters ... ok
[INFO] [stdout] test instructions::tests::decode_loadkey ... ok
[INFO] [stdout] test instructions::tests::decode_loadregisterdelaytimer ... ok
[INFO] [stdout] test instructions::tests::decode_loadsounddimerregister ... ok
[INFO] [stdout] test instructions::tests::decode_loadregistersmemory ... ok
[INFO] [stdout] test instructions::tests::decode_loaddelaytimerregister ... ok
[INFO] [stdout] test instructions::tests::decode_long_jump ... ok
[INFO] [stdout] test instructions::tests::decode_random ... ok
[INFO] [stdout] test instructions::tests::decode_return ... ok
[INFO] [stdout] test instructions::tests::decode_shift_left ... ok
[INFO] [stdout] test instructions::tests::decode_shift_right ... ok
[INFO] [stdout] test instructions::tests::decode_skip_equal ... ok
[INFO] [stdout] test instructions::tests::decode_skip_equal_operand ... ok
[INFO] [stdout] test instructions::tests::decode_skip_not_equal ... ok
[INFO] [stdout] test instructions::tests::decode_skip_not_equal_operand ... ok
[INFO] [stdout] test instructions::tests::decode_skipkeynotpressed ... ok
[INFO] [stdout] test instructions::tests::decode_skipkeypressed ... ok
[INFO] [stdout] test instructions::tests::decode_sub ... ok
[INFO] [stdout] test instructions::tests::decode_sub_negated ... ok
[INFO] [stdout] test instructions::tests::decode_sys ... ok
[INFO] [stdout] test instructions::tests::decode_xor ... ok
[INFO] [stdout] test instructions::tests::vregister_iter_to_va ... ok
[INFO] [stdout] test instructions::tests::decode_loadsprite ... ok
[INFO] [stdout] test instructions::tests::decode_or ... ok
[INFO] [stdout] test keypad::tests::keypad_default ... ok
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] test vm::tests::vm_execute_instruction_add ... ok
[INFO] [stdout] test instructions::tests::vregister_tryfrom_err ... ok
[INFO] [stdout] test vm::tests::vm_execute_instruction_add_operand ... ok
[INFO] [stdout] test vm::tests::vm_execute_instruction_addi ... ok
[INFO] [stdout] test vm::tests::vm_execute_instruction_add_operand_wrapping ... ok
[INFO] [stdout] test vm::tests::vm_execute_instruction_load_operand ... ok
[INFO] [stdout] test vm::tests::vm_execute_instruction_jump ... ok
[INFO] [stdout] test vm::tests::vm_execute_instruction_draw ... ok
[INFO] [stdout] test instructions::tests::vregister_iter_to_v0 ... ok
[INFO] [stdout] test vm::tests::vm_execute_instruction_loadi ... ok
[INFO] [stdout] test vm::tests::vm_execute_instruction_load ... ok
[INFO] [stdout] test vm::tests::vm_execute_instruction_loadkey ... ok
[INFO] [stdout] test instructions::tests::vregister_iter_to_vf ... ok
[INFO] [stdout] test vm::tests::vm_execute_instruction_add_overflow ... ok
[INFO] [stdout] test vm::tests::vm_execute_instruction_shiftleft_inplace ... ok
[INFO] [stdout] test vm::tests::vm_execute_instruction_loadbinarycodeddecimal ... ok
[INFO] [stdout] test vm::tests::vm_execute_instruction_loadmemoryregisters_all ... ok
[INFO] [stdout] test vm::tests::vm_execute_instruction_loadmemoryregisters_one ... ok
[INFO] [stdout] test vm::tests::vm_execute_instruction_loadregistersmemory_all ... ok
[INFO] [stdout] test vm::tests::vm_execute_instruction_loadregistersmemory_one ... ok
[INFO] [stdout] test vm::tests::vm_execute_instruction_loadsprite ... ok
[INFO] [stdout] test vm::tests::vm_execute_instruction_longjump ... ok
[INFO] [stdout] test vm::tests::vm_execute_instruction_or ... ok
[INFO] [stdout] test vm::tests::vm_execute_instruction_shiftright_inplace ... ok
[INFO] [stdout] test vm::tests::vm_execute_instruction_shiftleft_inplace_overflow ... ok
[INFO] [stdout] test vm::tests::vm_execute_instruction_skipequaloperand ... ok
[INFO] [stdout] test vm::tests::vm_execute_instruction_shiftright_inplace_overflow ... ok
[INFO] [stdout] test vm::tests::vm_execute_instruction_shiftleft ... ok
[INFO] [stdout] test vm::tests::vm_execute_instruction_random ... ok
[INFO] [stdout] test vm::tests::vm_execute_instruction_skipkeypressed ... ok
[INFO] [stdout] test vm::tests::vm_execute_instruction_skipkeynotpressed ... ok
[INFO] [stdout] test vm::tests::vm_execute_instruction_and ... ok
[INFO] [stdout] test vm::tests::vm_execute_instruction_skipnotequal ... ok
[INFO] [stdout] test vm::tests::vm_execute_instruction_sub ... ok
[INFO] [stdout] test vm::tests::vm_execute_instruction_subnegated ... ok
[INFO] [stdout] test vm::tests::vm_execute_instruction_skipnotequaloperand ... ok
[INFO] [stdout] test vm::tests::vm_execute_instruction_xor ... ok
[INFO] [stdout] test vm::tests::vm_execute_instruction_sub_borrow ... ok
[INFO] [stdout] test vm::tests::vregisters_set_get ... ok
[INFO] [stdout] test vm::tests::vm_execute_instruction_sys_default ... ok
[INFO] [stdout] test vm::tests::vm_execute_instruction_subnegated_borrow ... ok
[INFO] [stdout] test vm::tests::vm_execute_instruction_sys_sysfn ... ok
[INFO] [stdout] test vm::tests::vm_execute_instruction_shiftright ... ok
[INFO] [stdout] test vm::tests::vm_execute_instruction_skipequal ... ok
[INFO] [stdout] test display::tests::pixel_xor ... ok
[INFO] [stdout] test instructions::tests::vregister_tryfrom_ok ... ok
[INFO] [stdout] test instructions::tests::instruction_decode_encode ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 95 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.07s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests chip_8
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d3fb85bbdc1a5c78034a86e8af127cf4a9996a737102aaece324e8b2da88c291", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3fb85bbdc1a5c78034a86e8af127cf4a9996a737102aaece324e8b2da88c291", kill_on_drop: false }`
[INFO] [stdout] d3fb85bbdc1a5c78034a86e8af127cf4a9996a737102aaece324e8b2da88c291