[INFO] fetching crate adafruit-alphanum4 0.1.2...
[INFO] testing adafruit-alphanum4-0.1.2 against try#b83b707f97d809763b7861afa7638871f3339a33 for pr-145838-1
[INFO] extracting crate adafruit-alphanum4 0.1.2 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate adafruit-alphanum4 0.1.2
[INFO] finished tweaking crates.io crate adafruit-alphanum4 0.1.2
[INFO] tweaked toml for crates.io crate adafruit-alphanum4 0.1.2 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate adafruit-alphanum4 0.1.2 on toolchain b83b707f97d809763b7861afa7638871f3339a33
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "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" "+b83b707f97d809763b7861afa7638871f3339a33" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 7 packages to latest compatible versions
[INFO] [stderr]       Adding embedded-hal v0.2.7 (available: v1.0.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 89d10726998f93ce6c2b81dd724bb13ec8204b0e1c5706342cc09b4c62cec24d
[INFO] running `Command { std: "docker" "start" "-a" "89d10726998f93ce6c2b81dd724bb13ec8204b0e1c5706342cc09b4c62cec24d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "89d10726998f93ce6c2b81dd724bb13ec8204b0e1c5706342cc09b4c62cec24d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89d10726998f93ce6c2b81dd724bb13ec8204b0e1c5706342cc09b4c62cec24d", kill_on_drop: false }`
[INFO] [stdout] 89d10726998f93ce6c2b81dd724bb13ec8204b0e1c5706342cc09b4c62cec24d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e1379508c5c15111c5c8dea476d451448d7b12eb56385ad9b5f1eeb8c3b8f94b
[INFO] running `Command { std: "docker" "start" "-a" "e1379508c5c15111c5c8dea476d451448d7b12eb56385ad9b5f1eeb8c3b8f94b", 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-alphanum4 v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.75s
[INFO] running `Command { std: "docker" "inspect" "e1379508c5c15111c5c8dea476d451448d7b12eb56385ad9b5f1eeb8c3b8f94b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1379508c5c15111c5c8dea476d451448d7b12eb56385ad9b5f1eeb8c3b8f94b", kill_on_drop: false }`
[INFO] [stdout] e1379508c5c15111c5c8dea476d451448d7b12eb56385ad9b5f1eeb8c3b8f94b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aa650863444d64953f739861a9dd888564d8ca938f79fffaa2faab67d5ca8a93
[INFO] running `Command { std: "docker" "start" "-a" "aa650863444d64953f739861a9dd888564d8ca938f79fffaa2faab67d5ca8a93", kill_on_drop: false }`
[INFO] [stderr]    Compiling adafruit-alphanum4 v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.26s
[INFO] running `Command { std: "docker" "inspect" "aa650863444d64953f739861a9dd888564d8ca938f79fffaa2faab67d5ca8a93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa650863444d64953f739861a9dd888564d8ca938f79fffaa2faab67d5ca8a93", kill_on_drop: false }`
[INFO] [stdout] aa650863444d64953f739861a9dd888564d8ca938f79fffaa2faab67d5ca8a93
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] dc5d001856acc98b5d8432d36710693723a76363af5d2875bd78e81ebc9fdb96
[INFO] running `Command { std: "docker" "start" "-a" "dc5d001856acc98b5d8432d36710693723a76363af5d2875bd78e81ebc9fdb96", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/adafruit_alphanum4-8a49576f5ee5435e)
[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] [stderr]    Doc-tests adafruit_alphanum4
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 13) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 13) stdout ----
[INFO] [stdout] error[E0412]: cannot find type `Hertz` in this scope
[INFO] [stdout]  --> src/lib.rs:16:15
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let freq: Hertz = 20.khz().into();
[INFO] [stdout]   |               ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `device` in this scope
[INFO] [stdout]  --> src/lib.rs:20:13
[INFO] [stdout]   |
[INFO] [stdout] 9 |             device.I2C2, 
[INFO] [stdout]   |             ^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `scl_pin` in this scope
[INFO] [stdout]   --> src/lib.rs:21:14
[INFO] [stdout]    |
[INFO] [stdout] 10 |             (scl_pin, sda_pin),
[INFO] [stdout]    |              ^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `sda_pin` in this scope
[INFO] [stdout]   --> src/lib.rs:21:23
[INFO] [stdout]    |
[INFO] [stdout] 10 |             (scl_pin, sda_pin),
[INFO] [stdout]    |                       ^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Mode`
[INFO] [stdout]   --> src/lib.rs:22:13
[INFO] [stdout]    |
[INFO] [stdout] 11 |             Mode::Standard { frequency: freq.0 },
[INFO] [stdout]    |             ^^^^ use of undeclared type `Mode`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout]  2 + use embedded_hal::spi::Mode;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `clocks` in this scope
[INFO] [stdout]   --> src/lib.rs:23:13
[INFO] [stdout]    |
[INFO] [stdout] 12 |             clocks,
[INFO] [stdout]    |             ^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `rcc` in this scope
[INFO] [stdout]   --> src/lib.rs:24:18
[INFO] [stdout]    |
[INFO] [stdout] 13 |             &mut rcc.apb1,
[INFO] [stdout]    |                  ^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `clocks` in this scope
[INFO] [stdout]   --> src/lib.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |         clocks,
[INFO] [stdout]    |         ^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `HT16K33`
[INFO] [stdout]   --> src/lib.rs:33:23
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let mut ht16k33 = HT16K33::new(i2c2, DISP_I2C_ADDR);
[INFO] [stdout]    |                       ^^^^^^^ use of undeclared type `HT16K33`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout]  2 + use ht16k33::HT16K33;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Index`
[INFO] [stdout]   --> src/lib.rs:37:38
[INFO] [stdout]    |
[INFO] [stdout] 26 |     ht16k33.update_buffer_with_digit(Index::One, 1);
[INFO] [stdout]    |                                      ^^^^^ use of undeclared type `Index`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]    |
[INFO] [stdout]  2 + use std::ops::Index;
[INFO] [stdout]    |
[INFO] [stdout]  2 + use adafruit_alphanum4::Index;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Index`
[INFO] [stdout]   --> src/lib.rs:38:38
[INFO] [stdout]    |
[INFO] [stdout] 27 |     ht16k33.update_buffer_with_digit(Index::Two, 2);
[INFO] [stdout]    |                                      ^^^^^ use of undeclared type `Index`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]    |
[INFO] [stdout]  2 + use std::ops::Index;
[INFO] [stdout]    |
[INFO] [stdout]  2 + use adafruit_alphanum4::Index;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Index`
[INFO] [stdout]   --> src/lib.rs:39:38
[INFO] [stdout]    |
[INFO] [stdout] 28 |     ht16k33.update_buffer_with_digit(Index::Three, 3);
[INFO] [stdout]    |                                      ^^^^^ use of undeclared type `Index`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]    |
[INFO] [stdout]  2 + use std::ops::Index;
[INFO] [stdout]    |
[INFO] [stdout]  2 + use adafruit_alphanum4::Index;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Index`
[INFO] [stdout]   --> src/lib.rs:40:38
[INFO] [stdout]    |
[INFO] [stdout] 29 |     ht16k33.update_buffer_with_digit(Index::Four, 4);
[INFO] [stdout]    |                                      ^^^^^ use of undeclared type `Index`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]    |
[INFO] [stdout]  2 + use std::ops::Index;
[INFO] [stdout]    |
[INFO] [stdout]  2 + use adafruit_alphanum4::Index;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Index`
[INFO] [stdout]   --> src/lib.rs:43:37
[INFO] [stdout]    |
[INFO] [stdout] 32 |     ht16k33.update_buffer_with_char(Index::One, AsciiChar::new('A'));
[INFO] [stdout]    |                                     ^^^^^ use of undeclared type `Index`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]    |
[INFO] [stdout]  2 + use std::ops::Index;
[INFO] [stdout]    |
[INFO] [stdout]  2 + use adafruit_alphanum4::Index;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `AsciiChar`
[INFO] [stdout]   --> src/lib.rs:43:49
[INFO] [stdout]    |
[INFO] [stdout] 32 |     ht16k33.update_buffer_with_char(Index::One, AsciiChar::new('A'));
[INFO] [stdout]    |                                                 ^^^^^^^^^ use of undeclared type `AsciiChar`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these enums
[INFO] [stdout]    |
[INFO] [stdout]  2 + use adafruit_alphanum4::AsciiChar;
[INFO] [stdout]    |
[INFO] [stdout]  2 + use ascii::AsciiChar;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Index`
[INFO] [stdout]   --> src/lib.rs:44:37
[INFO] [stdout]    |
[INFO] [stdout] 33 |     ht16k33.update_buffer_with_char(Index::Two, AsciiChar::new('B'));
[INFO] [stdout]    |                                     ^^^^^ use of undeclared type `Index`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]    |
[INFO] [stdout]  2 + use std::ops::Index;
[INFO] [stdout]    |
[INFO] [stdout]  2 + use adafruit_alphanum4::Index;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `AsciiChar`
[INFO] [stdout]   --> src/lib.rs:44:49
[INFO] [stdout]    |
[INFO] [stdout] 33 |     ht16k33.update_buffer_with_char(Index::Two, AsciiChar::new('B'));
[INFO] [stdout]    |                                                 ^^^^^^^^^ use of undeclared type `AsciiChar`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these enums
[INFO] [stdout]    |
[INFO] [stdout]  2 + use adafruit_alphanum4::AsciiChar;
[INFO] [stdout]    |
[INFO] [stdout]  2 + use ascii::AsciiChar;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Index`
[INFO] [stdout]   --> src/lib.rs:47:36
[INFO] [stdout]    |
[INFO] [stdout] 36 |     ht16k33.update_buffer_with_dot(Index::Two, true);
[INFO] [stdout]    |                                    ^^^^^ use of undeclared type `Index`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]    |
[INFO] [stdout]  2 + use std::ops::Index;
[INFO] [stdout]    |
[INFO] [stdout]  2 + use adafruit_alphanum4::Index;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Index`
[INFO] [stdout]   --> src/lib.rs:50:38
[INFO] [stdout]    |
[INFO] [stdout] 39 |     ht16k33.update_buffer_with_float(Index::One, -3.14, 2, 10).unwrap();
[INFO] [stdout]    |                                      ^^^^^ use of undeclared type `Index`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]    |
[INFO] [stdout]  2 + use std::ops::Index;
[INFO] [stdout]    |
[INFO] [stdout]  2 + use adafruit_alphanum4::Index;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Index`
[INFO] [stdout]   --> src/lib.rs:53:37
[INFO] [stdout]    |
[INFO] [stdout] 42 |     ht16k33.update_buffer_with_char(Index::One, AsciiChar::new('X'));
[INFO] [stdout]    |                                     ^^^^^ use of undeclared type `Index`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]    |
[INFO] [stdout]  2 + use std::ops::Index;
[INFO] [stdout]    |
[INFO] [stdout]  2 + use adafruit_alphanum4::Index;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `AsciiChar`
[INFO] [stdout]   --> src/lib.rs:53:49
[INFO] [stdout]    |
[INFO] [stdout] 42 |     ht16k33.update_buffer_with_char(Index::One, AsciiChar::new('X'));
[INFO] [stdout]    |                                                 ^^^^^^^^^ use of undeclared type `AsciiChar`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these enums
[INFO] [stdout]    |
[INFO] [stdout]  2 + use adafruit_alphanum4::AsciiChar;
[INFO] [stdout]    |
[INFO] [stdout]  2 + use ascii::AsciiChar;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Index`
[INFO] [stdout]   --> src/lib.rs:54:38
[INFO] [stdout]    |
[INFO] [stdout] 43 |     ht16k33.update_buffer_with_float(Index::Two, -3.14, 2, 10).unwrap(); //Display will read "X-3.1"
[INFO] [stdout]    |                                      ^^^^^ use of undeclared type `Index`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]    |
[INFO] [stdout]  2 + use std::ops::Index;
[INFO] [stdout]    |
[INFO] [stdout]  2 + use adafruit_alphanum4::Index;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Index`
[INFO] [stdout]   --> src/lib.rs:57:38
[INFO] [stdout]    |
[INFO] [stdout] 46 |     ht16k33.update_buffer_with_float(Index::One, 12345., 0, 10).expect("Oops"); 
[INFO] [stdout]    |                                      ^^^^^ use of undeclared type `Index`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]    |
[INFO] [stdout]  2 + use std::ops::Index;
[INFO] [stdout]    |
[INFO] [stdout]  2 + use adafruit_alphanum4::Index;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `khz` found for type `{integer}` in the current scope
[INFO] [stdout]  --> src/lib.rs:16:26
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let freq: Hertz = 20.khz().into();
[INFO] [stdout]   |                          ^^^ method not found in `{integer}`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `I2c`
[INFO] [stdout]  --> src/lib.rs:19:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |         I2c::i2c2(
[INFO] [stdout]   |         ^^^ use of undeclared type `I2c`
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `blocking_i2c` in this scope
[INFO] [stdout]  --> src/lib.rs:18:20
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let mut i2c2 = blocking_i2c(
[INFO] [stdout]   |                    ^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 26 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0412, E0425, E0433, E0599.
[INFO] [stdout] For more information about an error, try `rustc --explain E0412`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 13)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.16s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "dc5d001856acc98b5d8432d36710693723a76363af5d2875bd78e81ebc9fdb96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc5d001856acc98b5d8432d36710693723a76363af5d2875bd78e81ebc9fdb96", kill_on_drop: false }`
[INFO] [stdout] dc5d001856acc98b5d8432d36710693723a76363af5d2875bd78e81ebc9fdb96