[INFO] cloning repository https://github.com/asquithboys/beltpack-client
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/asquithboys/beltpack-client" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fasquithboys%2Fbeltpack-client", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fasquithboys%2Fbeltpack-client'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 32c252e7e71f737f30fb18cb87e1b9c0bf5fce2d
[INFO] checking asquithboys/beltpack-client against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fasquithboys%2Fbeltpack-client" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/asquithboys/beltpack-client on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/asquithboys/beltpack-client
[INFO] finished tweaking git repo https://github.com/asquithboys/beltpack-client
[INFO] tweaked toml for git repo https://github.com/asquithboys/beltpack-client written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/asquithboys/beltpack-client already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 3 packages
[INFO] [stderr]       Adding bitflags v2.5.0
[INFO] [stderr]       Adding gpio-cdev v0.6.0
[INFO] [stderr]       Adding nix v0.27.1 (latest: v0.28.0)
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded byte-slice-cast v0.3.5
[INFO] [stderr]   Downloaded tokio-wifiscanner v0.2.1
[INFO] [stderr]   Downloaded display-interface-spi v0.4.1
[INFO] [stderr]   Downloaded wifiscanner v0.5.1
[INFO] [stderr]   Downloaded display-interface-i2c v0.4.0
[INFO] [stderr]   Downloaded display-interface v0.4.1
[INFO] [stderr]   Downloaded ssd1306 v0.8.3
[INFO] [stderr]   Downloaded gpio-cdev v0.5.1
[INFO] [stderr]   Downloaded i2cdev v0.5.1
[INFO] [stderr]   Downloaded spidev v0.5.2
[INFO] [stderr]   Downloaded serial-unix v0.4.0
[INFO] [stderr]   Downloaded termios v0.2.2
[INFO] [stderr]   Downloaded gpio-cdev v0.6.0
[INFO] [stderr]   Downloaded sysfs_gpio v0.6.1
[INFO] [stderr]   Downloaded micromath v2.0.0
[INFO] [stderr]   Downloaded configparser v3.0.2
[INFO] [stderr]   Downloaded ioctl-rs v0.1.6
[INFO] [stderr]   Downloaded serial-core v0.4.0
[INFO] [stderr]   Downloaded local-ip-address v0.5.6
[INFO] [stderr]   Downloaded linux-embedded-hal v0.3.2
[INFO] [stderr]   Downloaded u8g2-fonts v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c3527edeb71d8aae0b0bb67ee3b900fa8a16335fca50703db4cc3f1de080790d
[INFO] running `Command { std: "docker" "start" "-a" "c3527edeb71d8aae0b0bb67ee3b900fa8a16335fca50703db4cc3f1de080790d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c3527edeb71d8aae0b0bb67ee3b900fa8a16335fca50703db4cc3f1de080790d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3527edeb71d8aae0b0bb67ee3b900fa8a16335fca50703db4cc3f1de080790d", kill_on_drop: false }`
[INFO] [stdout] c3527edeb71d8aae0b0bb67ee3b900fa8a16335fca50703db4cc3f1de080790d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 77cb785a78e7b4d3f073b33e83e7946893b78205f0013d14cd0369fdf5073514
[INFO] running `Command { std: "docker" "start" "-a" "77cb785a78e7b4d3f073b33e83e7946893b78205f0013d14cd0369fdf5073514", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]    Compiling proc-macro2 v1.0.69
[INFO] [stderr]     Checking memchr v2.6.4
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]     Checking value-bag v1.4.1
[INFO] [stderr]     Checking event-listener v2.5.3
[INFO] [stderr]     Checking futures-io v0.3.28
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]     Checking parking v2.2.0
[INFO] [stderr]     Checking waker-fn v1.1.1
[INFO] [stderr]    Compiling io-lifetimes v1.0.11
[INFO] [stderr]    Compiling az v1.2.1
[INFO] [stderr]     Checking fastrand v1.9.0
[INFO] [stderr]     Checking nb v1.1.0
[INFO] [stderr]    Compiling polling v2.8.0
[INFO] [stderr]    Compiling serde v1.0.189
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling rustix v0.37.25
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]     Checking async-lock v2.8.0
[INFO] [stderr]     Checking embedded-hal v0.2.7
[INFO] [stderr]     Checking log v0.4.20
[INFO] [stderr]    Compiling async-io v1.13.0
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]     Checking async-task v4.5.0
[INFO] [stderr]     Checking atomic-waker v1.1.2
[INFO] [stderr]     Checking smallvec v1.11.1
[INFO] [stderr]     Checking either v1.9.0
[INFO] [stderr]     Checking linux-raw-sys v0.3.8
[INFO] [stderr]     Checking piper v0.2.1
[INFO] [stderr]     Checking display-interface v0.4.1
[INFO] [stderr]    Compiling thiserror v1.0.49
[INFO] [stderr]     Checking byte-slice-cast v0.3.5
[INFO] [stderr]     Checking bitflags v2.5.0
[INFO] [stderr]     Checking display-interface-i2c v0.4.0
[INFO] [stderr]     Checking float-cmp v0.9.0
[INFO] [stderr]     Checking futures-lite v1.13.0
[INFO] [stderr]     Checking aho-corasick v1.1.2
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]     Checking display-interface-spi v0.4.1
[INFO] [stderr]     Checking cast v0.3.0
[INFO] [stderr]     Checking micromath v2.0.0
[INFO] [stderr]     Checking concurrent-queue v2.3.0
[INFO] [stderr]     Checking configparser v3.0.2
[INFO] [stderr]     Checking tracing v0.1.39
[INFO] [stderr]     Checking async-channel v1.9.0
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.38
[INFO] [stderr]     Checking async-executor v1.6.0
[INFO] [stderr]     Checking blocking v1.4.1
[INFO] [stderr]     Checking embedded-graphics-core v0.4.0
[INFO] [stderr]     Checking regex-automata v0.4.3
[INFO] [stderr]     Checking nix v0.23.2
[INFO] [stderr]     Checking socket2 v0.4.9
[INFO] [stderr]     Checking parking_lot_core v0.9.9
[INFO] [stderr]     Checking mio v0.8.8
[INFO] [stderr]     Checking ioctl-rs v0.1.6
[INFO] [stderr]     Checking socket2 v0.5.4
[INFO] [stderr]     Checking serial-core v0.4.0
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking termios v0.2.2
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking nix v0.27.1
[INFO] [stderr]     Checking u8g2-fonts v0.3.0
[INFO] [stderr]     Checking embedded-graphics v0.8.1
[INFO] [stderr]     Checking serial-unix v0.4.0
[INFO] [stderr]     Checking ssd1306 v0.8.3
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking gpio-cdev v0.6.0
[INFO] [stderr]     Checking regex v1.10.2
[INFO] [stderr]     Checking wifiscanner v0.5.1
[INFO] [stderr]     Checking async-global-executor v2.3.1
[INFO] [stderr]     Checking async-std v1.12.0
[INFO] [stderr]    Compiling serde_derive v1.0.189
[INFO] [stderr]    Compiling tokio-macros v2.1.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.49
[INFO] [stderr]     Checking sysfs_gpio v0.6.1
[INFO] [stderr]     Checking i2cdev v0.5.1
[INFO] [stderr]     Checking spidev v0.5.2
[INFO] [stderr]     Checking gpio-cdev v0.5.1
[INFO] [stderr]     Checking linux-embedded-hal v0.3.2
[INFO] [stderr]     Checking tokio v1.33.0
[INFO] [stderr]     Checking tokio-wifiscanner v0.2.1
[INFO] [stderr]    Compiling neli-proc-macros v0.1.3
[INFO] [stderr]     Checking neli v0.6.4
[INFO] [stderr]     Checking local-ip-address v0.5.6
[INFO] [stderr]     Checking beltpack-client v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/main.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 |     path::{self, Path},
[INFO] [stdout]   |            ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `CdevPin`
[INFO] [stdout]   --> src/main.rs:17:26
[INFO] [stdout]    |
[INFO] [stdout] 17 | use linux_embedded_hal::{CdevPin, I2cdev};
[INFO] [stdout]    |                          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `DisplaySize`
[INFO] [stdout]   --> src/main.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 |     size::{DisplaySize, DisplaySize128x64},
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/main.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 |     path::{self, Path},
[INFO] [stdout]   |            ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `CdevPin`
[INFO] [stdout]   --> src/main.rs:17:26
[INFO] [stdout]    |
[INFO] [stdout] 17 | use linux_embedded_hal::{CdevPin, I2cdev};
[INFO] [stdout]    |                          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `DisplaySize`
[INFO] [stdout]   --> src/main.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 |     size::{DisplaySize, DisplaySize128x64},
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Button` is never used
[INFO] [stdout]   --> src/main.rs:35:6
[INFO] [stdout]    |
[INFO] [stdout] 35 | enum Button {
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Error` is never constructed
[INFO] [stdout]   --> src/main.rs:93:8
[INFO] [stdout]    |
[INFO] [stdout] 93 | struct Error(u8);
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/main.rs:96:8
[INFO] [stdout]    |
[INFO] [stdout] 95 | impl Error {
[INFO] [stdout]    | ---------- associated function in this implementation
[INFO] [stdout] 96 |     fn new(value: &str) -> Result<Self, String> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `handle_error` is never used
[INFO] [stdout]    --> src/main.rs:130:4
[INFO] [stdout]     |
[INFO] [stdout] 130 | fn handle_error<T, E>(
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Button` is never used
[INFO] [stdout]   --> src/main.rs:35:6
[INFO] [stdout]    |
[INFO] [stdout] 35 | enum Button {
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Error` is never constructed
[INFO] [stdout]   --> src/main.rs:93:8
[INFO] [stdout]    |
[INFO] [stdout] 93 | struct Error(u8);
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/main.rs:96:8
[INFO] [stdout]    |
[INFO] [stdout] 95 | impl Error {
[INFO] [stdout]    | ---------- associated function in this implementation
[INFO] [stdout] 96 |     fn new(value: &str) -> Result<Self, String> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `handle_error` is never used
[INFO] [stdout]    --> src/main.rs:130:4
[INFO] [stdout]     |
[INFO] [stdout] 130 | fn handle_error<T, E>(
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 17.07s
[INFO] running `Command { std: "docker" "inspect" "77cb785a78e7b4d3f073b33e83e7946893b78205f0013d14cd0369fdf5073514", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77cb785a78e7b4d3f073b33e83e7946893b78205f0013d14cd0369fdf5073514", kill_on_drop: false }`
[INFO] [stdout] 77cb785a78e7b4d3f073b33e83e7946893b78205f0013d14cd0369fdf5073514