[INFO] cloning repository https://github.com/sb-child/ads1298-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sb-child/ads1298-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsb-child%2Fads1298-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsb-child%2Fads1298-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 53e59f411196b206f9f0f6548a063c7c0dc91b51
[INFO] checking sb-child/ads1298-rs against master#cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9 for pr-136968
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsb-child%2Fads1298-rs" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sb-child/ads1298-rs on toolchain cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sb-child/ads1298-rs
[INFO] finished tweaking git repo https://github.com/sb-child/ads1298-rs
[INFO] tweaked toml for git repo https://github.com/sb-child/ads1298-rs written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/sb-child/ads1298-rs 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" "+cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded enum_variant_type v0.3.1
[INFO] [stderr]   Downloaded ux v0.1.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e0bc1f7ecd5499adee91cc9f65b6c74f35ecfe32f8f905ff94f2aaa8b4bd0ad5
[INFO] running `Command { std: "docker" "start" "-a" "e0bc1f7ecd5499adee91cc9f65b6c74f35ecfe32f8f905ff94f2aaa8b4bd0ad5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e0bc1f7ecd5499adee91cc9f65b6c74f35ecfe32f8f905ff94f2aaa8b4bd0ad5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0bc1f7ecd5499adee91cc9f65b6c74f35ecfe32f8f905ff94f2aaa8b4bd0ad5", kill_on_drop: false }`
[INFO] [stdout] e0bc1f7ecd5499adee91cc9f65b6c74f35ecfe32f8f905ff94f2aaa8b4bd0ad5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 61c3a1f301e41678c215c8817770f2fe95fa73179fc3bb0d8322cb32bf99bda8
[INFO] running `Command { std: "docker" "start" "-a" "61c3a1f301e41678c215c8817770f2fe95fa73179fc3bb0d8322cb32bf99bda8", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling unicode-ident v1.0.13
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking embedded-hal v1.0.0
[INFO] [stderr]     Checking log v0.4.22
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking bitfield v0.17.0
[INFO] [stderr]     Checking ux v0.1.6
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling proc_macro_roids v0.7.0
[INFO] [stderr]    Compiling enum_variant_type v0.3.1
[INFO] [stderr]     Checking ads1298-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `buffer` is never read
[INFO] [stdout]   --> src/driver/stream_reader.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct StreamReader<'a, Spi: SpiDevice> {
[INFO] [stdout]    |            ------------ field in this struct
[INFO] [stdout] 18 |     pub driver: &'a mut ADS1298<Spi>,
[INFO] [stdout] 19 |     buffer: Vec<u8>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `register` is never read
[INFO] [stdout]   --> src/driver/stream_reader.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | struct FieldConfig {
[INFO] [stdout]    |        ----------- field in this struct
[INFO] [stdout] 23 |     register: registers::DataRegister,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `buffer` is never read
[INFO] [stdout]   --> src/driver/stream_reader.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct StreamReader<'a, Spi: SpiDevice> {
[INFO] [stdout]    |            ------------ field in this struct
[INFO] [stdout] 18 |     pub driver: &'a mut ADS1298<Spi>,
[INFO] [stdout] 19 |     buffer: Vec<u8>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `register` is never read
[INFO] [stdout]   --> src/driver/stream_reader.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | struct FieldConfig {
[INFO] [stdout]    |        ----------- field in this struct
[INFO] [stdout] 23 |     register: registers::DataRegister,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.91s
[INFO] running `Command { std: "docker" "inspect" "61c3a1f301e41678c215c8817770f2fe95fa73179fc3bb0d8322cb32bf99bda8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61c3a1f301e41678c215c8817770f2fe95fa73179fc3bb0d8322cb32bf99bda8", kill_on_drop: false }`
[INFO] [stdout] 61c3a1f301e41678c215c8817770f2fe95fa73179fc3bb0d8322cb32bf99bda8