[INFO] fetching crate adafruit-7segment 0.1.0... [INFO] testing adafruit-7segment-0.1.0 against try#8da20828b6ea601dfd8e2448cb50ace88876bd78 for pr-150933 [INFO] extracting crate adafruit-7segment 0.1.0 into /workspace/builds/worker-1-tc2/source [INFO] started tweaking crates.io crate adafruit-7segment 0.1.0 [INFO] finished tweaking crates.io crate adafruit-7segment 0.1.0 [INFO] tweaked toml for crates.io crate adafruit-7segment 0.1.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate adafruit-7segment 0.1.0 on toolchain 8da20828b6ea601dfd8e2448cb50ace88876bd78 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8da20828b6ea601dfd8e2448cb50ace88876bd78" "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" "+8da20828b6ea601dfd8e2448cb50ace88876bd78" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Updating crates.io index [INFO] [stderr] Blocking waiting for file lock on package cache [ERROR] error running command: no output for 300 seconds [INFO] testing adafruit-7segment-0.1.0 against try#8da20828b6ea601dfd8e2448cb50ace88876bd78 for pr-150933 [INFO] extracting crate adafruit-7segment 0.1.0 into /workspace/builds/worker-1-tc2/source [INFO] started tweaking crates.io crate adafruit-7segment 0.1.0 [INFO] finished tweaking crates.io crate adafruit-7segment 0.1.0 [INFO] tweaked toml for crates.io crate adafruit-7segment 0.1.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate adafruit-7segment 0.1.0 on toolchain 8da20828b6ea601dfd8e2448cb50ace88876bd78 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8da20828b6ea601dfd8e2448cb50ace88876bd78" "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" "+8da20828b6ea601dfd8e2448cb50ace88876bd78" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Updating crates.io index [INFO] [stderr] Blocking waiting for file lock on package cache [ERROR] error running command: no output for 300 seconds [INFO] testing adafruit-7segment-0.1.0 against try#8da20828b6ea601dfd8e2448cb50ace88876bd78 for pr-150933 [INFO] extracting crate adafruit-7segment 0.1.0 into /workspace/builds/worker-1-tc2/source [INFO] started tweaking crates.io crate adafruit-7segment 0.1.0 [INFO] finished tweaking crates.io crate adafruit-7segment 0.1.0 [INFO] tweaked toml for crates.io crate adafruit-7segment 0.1.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate adafruit-7segment 0.1.0 on toolchain 8da20828b6ea601dfd8e2448cb50ace88876bd78 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8da20828b6ea601dfd8e2448cb50ace88876bd78" "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" "+8da20828b6ea601dfd8e2448cb50ace88876bd78" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Updating crates.io index [INFO] [stderr] Blocking waiting for file lock on package cache [ERROR] error running command: no output for 300 seconds [INFO] testing adafruit-7segment-0.1.0 against try#8da20828b6ea601dfd8e2448cb50ace88876bd78 for pr-150933 [INFO] extracting crate adafruit-7segment 0.1.0 into /workspace/builds/worker-1-tc2/source [INFO] started tweaking crates.io crate adafruit-7segment 0.1.0 [INFO] finished tweaking crates.io crate adafruit-7segment 0.1.0 [INFO] tweaked toml for crates.io crate adafruit-7segment 0.1.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate adafruit-7segment 0.1.0 on toolchain 8da20828b6ea601dfd8e2448cb50ace88876bd78 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8da20828b6ea601dfd8e2448cb50ace88876bd78" "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" "+8da20828b6ea601dfd8e2448cb50ace88876bd78" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Updating crates.io index [INFO] [stderr] Blocking waiting for file lock on package cache [ERROR] error running command: no output for 300 seconds [INFO] testing adafruit-7segment-0.1.0 against try#8da20828b6ea601dfd8e2448cb50ace88876bd78 for pr-150933 [INFO] extracting crate adafruit-7segment 0.1.0 into /workspace/builds/worker-1-tc2/source [INFO] started tweaking crates.io crate adafruit-7segment 0.1.0 [INFO] finished tweaking crates.io crate adafruit-7segment 0.1.0 [INFO] tweaked toml for crates.io crate adafruit-7segment 0.1.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate adafruit-7segment 0.1.0 on toolchain 8da20828b6ea601dfd8e2448cb50ace88876bd78 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8da20828b6ea601dfd8e2448cb50ace88876bd78" "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" "+8da20828b6ea601dfd8e2448cb50ace88876bd78" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Updating crates.io index [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Locking 61 packages to latest compatible versions [INFO] [stderr] Adding embedded-hal v0.2.7 (available: v1.0.0) [INFO] [stderr] Adding embedded-hal-mock v0.4.1 (available: v0.11.1) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8da20828b6ea601dfd8e2448cb50ace88876bd78" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded ht16k33 v0.4.0 [INFO] [stderr] Downloaded version-sync v0.9.5 [INFO] [stderr] Downloaded embedded-hal-mock v0.4.1 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:cfa559dde23f44738f9990739aaa3487d8df3af37eb5df0572f7cf76004a604a" "/opt/rustwide/cargo-home/bin/cargo" "+8da20828b6ea601dfd8e2448cb50ace88876bd78" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 133f6065bfeb7fc19ae3452a7bf61f6ff74b1394b6cc78ced30a5a0d334048c5 [INFO] running `Command { std: "docker" "start" "-a" "133f6065bfeb7fc19ae3452a7bf61f6ff74b1394b6cc78ced30a5a0d334048c5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "133f6065bfeb7fc19ae3452a7bf61f6ff74b1394b6cc78ced30a5a0d334048c5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "133f6065bfeb7fc19ae3452a7bf61f6ff74b1394b6cc78ced30a5a0d334048c5", kill_on_drop: false }` [INFO] [stdout] 133f6065bfeb7fc19ae3452a7bf61f6ff74b1394b6cc78ced30a5a0d334048c5 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:cfa559dde23f44738f9990739aaa3487d8df3af37eb5df0572f7cf76004a604a" "/opt/rustwide/cargo-home/bin/cargo" "+8da20828b6ea601dfd8e2448cb50ace88876bd78" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 179cbb7da2710885a6d64d5ef232c9a2c71fda0298febe88d22e80d2a74cb9d7 [INFO] running `Command { std: "docker" "start" "-a" "179cbb7da2710885a6d64d5ef232c9a2c71fda0298febe88d22e80d2a74cb9d7", kill_on_drop: false }` [INFO] [stderr] Compiling nb v1.1.0 [INFO] [stderr] Compiling ascii v1.1.0 [INFO] [stderr] Compiling nb v0.1.3 [INFO] [stderr] Compiling embedded-hal v0.2.7 [INFO] [stderr] Compiling ht16k33 v0.4.0 [INFO] [stderr] Compiling adafruit-7segment v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.71s [INFO] running `Command { std: "docker" "inspect" "179cbb7da2710885a6d64d5ef232c9a2c71fda0298febe88d22e80d2a74cb9d7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "179cbb7da2710885a6d64d5ef232c9a2c71fda0298febe88d22e80d2a74cb9d7", kill_on_drop: false }` [INFO] [stdout] 179cbb7da2710885a6d64d5ef232c9a2c71fda0298febe88d22e80d2a74cb9d7 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:cfa559dde23f44738f9990739aaa3487d8df3af37eb5df0572f7cf76004a604a" "/opt/rustwide/cargo-home/bin/cargo" "+8da20828b6ea601dfd8e2448cb50ace88876bd78" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 78e1a909f6edfe564d779d72dafff46ddfb46020eede860f296481fa82c495b6 [INFO] running `Command { std: "docker" "start" "-a" "78e1a909f6edfe564d779d72dafff46ddfb46020eede860f296481fa82c495b6", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.106 [INFO] [stderr] Compiling quote v1.0.45 [INFO] [stderr] Compiling unicode-ident v1.0.24 [INFO] [stderr] Compiling serde v1.0.228 [INFO] [stderr] Compiling smallvec v1.15.1 [INFO] [stderr] Compiling hashbrown v0.16.1 [INFO] [stderr] Compiling pulldown-cmark v0.9.6 [INFO] [stderr] Compiling regex-syntax v0.8.10 [INFO] [stderr] Compiling winnow v0.5.40 [INFO] [stderr] Compiling percent-encoding v2.3.2 [INFO] [stderr] Compiling bitflags v2.11.0 [INFO] [stderr] Compiling memchr v2.8.0 [INFO] [stderr] Compiling semver v1.0.27 [INFO] [stderr] Compiling embedded-hal-mock v0.4.1 [INFO] [stderr] Compiling form_urlencoded v1.2.2 [INFO] [stderr] Compiling indexmap v2.13.0 [INFO] [stderr] Compiling syn v2.0.117 [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 regex-automata v0.4.14 [INFO] [stderr] Compiling regex v1.12.3 [INFO] [stderr] Compiling toml v0.7.8 [INFO] [stderr] Compiling synstructure v0.13.2 [INFO] [stderr] Compiling zerofrom-derive v0.1.6 [INFO] [stderr] Compiling yoke-derive v0.8.1 [INFO] [stderr] Compiling zerovec-derive v0.11.2 [INFO] [stderr] Compiling displaydoc v0.2.5 [INFO] [stderr] Compiling zerofrom v0.1.6 [INFO] [stderr] Compiling yoke v0.8.1 [INFO] [stderr] Compiling zerovec v0.11.5 [INFO] [stderr] Compiling zerotrie v0.2.3 [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 icu_normalizer v2.1.1 [INFO] [stderr] Compiling icu_properties v2.1.2 [INFO] [stderr] Compiling idna_adapter v1.2.1 [INFO] [stderr] Compiling idna v1.1.0 [INFO] [stderr] Compiling url v2.5.8 [INFO] [stderr] Compiling version-sync v0.9.5 [INFO] [stderr] Compiling adafruit-7segment v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 26.38s [INFO] running `Command { std: "docker" "inspect" "78e1a909f6edfe564d779d72dafff46ddfb46020eede860f296481fa82c495b6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "78e1a909f6edfe564d779d72dafff46ddfb46020eede860f296481fa82c495b6", kill_on_drop: false }` [INFO] [stdout] 78e1a909f6edfe564d779d72dafff46ddfb46020eede860f296481fa82c495b6 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:cfa559dde23f44738f9990739aaa3487d8df3af37eb5df0572f7cf76004a604a" "/opt/rustwide/cargo-home/bin/cargo" "+8da20828b6ea601dfd8e2448cb50ace88876bd78" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 3a49edf8bd798d41b770f1bfb673cbefce7fd98ac7cb76abb6fcb0300895098b [INFO] running `Command { std: "docker" "start" "-a" "3a49edf8bd798d41b770f1bfb673cbefce7fd98ac7cb76abb6fcb0300895098b", kill_on_drop: false }` [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.12s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/adafruit_7segment-b45c8701ba3bb053) [INFO] [stdout] [INFO] [stdout] running 5 tests [INFO] [stdout] test tests::update_buffer_with_char ... ok [INFO] [stdout] test tests::update_buffer_with_digit ... ok [INFO] [stdout] test tests::update_buffer_with_dot ... ok [INFO] [stdout] test tests::update_buffer_with_float ... ok [INFO] [stdout] test tests::update_buffer_with_colon ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stderr] Running tests/version-numbers.rs (/opt/rustwide/target/debug/deps/version_numbers-0703227dc0611799) [INFO] [stdout] [INFO] [stdout] running 3 tests [INFO] [stdout] test test_readme_deps ... ok [INFO] [stdout] test test_readme_mentions_version ... ok [INFO] [stdout] test test_html_root_url ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.06s [INFO] [stdout] [INFO] [stderr] Doc-tests adafruit_7segment [INFO] [stderr] warning: lint `missing_doc_code_examples` has been renamed to `rustdoc::missing_doc_code_examples` [INFO] [stderr] --> src/lib.rs:145:9 [INFO] [stderr] | [INFO] [stderr] 145 | #![warn(missing_doc_code_examples)] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `rustdoc::missing_doc_code_examples` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(renamed_and_removed_lints)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unknown lint: `rustdoc::missing_doc_code_examples` [INFO] [stderr] --> src/lib.rs:145:9 [INFO] [stderr] | [INFO] [stderr] 145 | #![warn(missing_doc_code_examples)] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: the `rustdoc::missing_doc_code_examples` lint is unstable [INFO] [stderr] = note: see issue #101730 for more information [INFO] [stderr] = help: add `#![feature(rustdoc_missing_doc_code_examples)]` to the crate attributes to enable [INFO] [stderr] = note: this compiler was built on 2026-03-04; consider upgrading it if it is out of date [INFO] [stderr] = note: `#[warn(unknown_lints)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unexpected character `!` [INFO] [stderr] --> src/lib.rs:10:1 [INFO] [stderr] | [INFO] [stderr] 10 | / //! # adafruit-7segment backpack Hal [INFO] [stderr] 11 | | //! [INFO] [stderr] 12 | | //! Additional features on top of the [`ht16k33` crate](https://crates.io/crates/ht16k33) to drive an [Adafruit 7-segment LED Alphanumeric Backpack](https://learn.adafruit.com/adafruit-led-backpack/0-dot-56-seven-segment-backpack) using traits from `embedded-hal`. [INFO] [stderr] 13 | | //! Derived from the [`adafruit-alphanum4` crate](https://crates.io/crates/adafruit-alphanum4) and modified for the 7-segment backpacks. [INFO] [stderr] ... | [INFO] [stderr] 141 | | //! [INFO] [stderr] 142 | | //! Due to the api of the ht16k33 crate the display buffer is not directly accessible so each LED that makes up the character is updated sequentially. The way the hardware on this backpack is set up allows a character to be updated by setting a single 16-bit value in the buffer. Iterating over each bit of the 16 every update is clearly not optimal but it's sufficiently fast for my current usage. If the ht16k33 crate is updated to grant mut access to the buffer this can be improved. [INFO] [stderr] | |______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(rustdoc::invalid_codeblock_attributes)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 3 warnings emitted [INFO] [stderr] [INFO] [stdout] [INFO] [stdout] running 6 tests [INFO] [stdout] test src/lib.rs - HT16K33::update_buffer_with_dot (line 298) ... ok [INFO] [stdout] test src/lib.rs - HT16K33::update_buffer_with_digit (line 267) ... ok [INFO] [stdout] test src/lib.rs - (line 114) ... ok [INFO] [stdout] test src/lib.rs - HT16K33::update_buffer_with_float (line 412) ... ok [INFO] [stdout] test src/lib.rs - HT16K33::update_buffer_with_colon (line 332) ... ok [INFO] [stdout] test src/lib.rs - HT16K33::update_buffer_with_char (line 361) ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.66s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "3a49edf8bd798d41b770f1bfb673cbefce7fd98ac7cb76abb6fcb0300895098b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3a49edf8bd798d41b770f1bfb673cbefce7fd98ac7cb76abb6fcb0300895098b", kill_on_drop: false }` [INFO] [stdout] 3a49edf8bd798d41b770f1bfb673cbefce7fd98ac7cb76abb6fcb0300895098b