[INFO] fetching crate electricui-cli 0.1.2...
[INFO] checking electricui-cli-0.1.2 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate electricui-cli 0.1.2 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate electricui-cli 0.1.2
[INFO] finished tweaking crates.io crate electricui-cli 0.1.2
[INFO] tweaked toml for crates.io crate electricui-cli 0.1.2 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate electricui-cli 0.1.2 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate electricui-cli 0.1.2 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 736738436b2ef85c5643e520bab67353cd2b3a65c8120af4bd1aa98d7b904fd9
[INFO] running `Command { std: "docker" "start" "-a" "736738436b2ef85c5643e520bab67353cd2b3a65c8120af4bd1aa98d7b904fd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "736738436b2ef85c5643e520bab67353cd2b3a65c8120af4bd1aa98d7b904fd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "736738436b2ef85c5643e520bab67353cd2b3a65c8120af4bd1aa98d7b904fd9", kill_on_drop: false }`
[INFO] [stdout] 736738436b2ef85c5643e520bab67353cd2b3a65c8120af4bd1aa98d7b904fd9
[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 -Dunmustuse_in_always_ok" "-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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d65b3a60cdc3309b81cc46f7c4de17bc1c2c19b57a290362d73fbf3528c7338b
[INFO] running `Command { std: "docker" "start" "-a" "d65b3a60cdc3309b81cc46f7c4de17bc1c2c19b57a290362d73fbf3528c7338b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling syn v1.0.90
[INFO] [stderr]    Compiling libc v0.2.121
[INFO] [stderr]    Compiling log v0.4.16
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]     Checking pin-project-lite v0.2.8
[INFO] [stderr]     Checking futures-sink v0.3.21
[INFO] [stderr]    Compiling futures-task v0.3.21
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]    Compiling rustversion v1.0.6
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]    Compiling nix v0.16.1
[INFO] [stderr]     Checking once_cell v1.10.0
[INFO] [stderr]     Checking futures-io v0.3.21
[INFO] [stderr]     Checking tracing-core v0.1.23
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling unicode-segmentation v1.9.0
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking crc-catalog v1.1.1
[INFO] [stderr]     Checking thread_local v1.1.4
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]     Checking corncobs v0.1.1
[INFO] [stderr]     Checking tracing-log v0.1.2
[INFO] [stderr]     Checking crc v2.1.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling quote v1.0.17
[INFO] [stderr]    Compiling err-derive v0.3.1
[INFO] [stderr]     Checking matchers v0.1.0
[INFO] [stderr]     Checking mio v0.8.2
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking nix v0.23.1
[INFO] [stderr]     Checking socket2 v0.4.4
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking ordered-float v2.10.0
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking serialport v4.0.1
[INFO] [stderr]     Checking ctrlc v3.2.1
[INFO] [stderr]     Checking mio-serial v5.0.2
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling futures-macro v0.3.21
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.20
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]     Checking tokio v1.17.0
[INFO] [stderr]     Checking electricui-embedded v0.1.5
[INFO] [stderr]     Checking tracing v0.1.32
[INFO] [stderr]     Checking tracing-subscriber v0.3.9
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking tokio-util v0.6.9
[INFO] [stderr]     Checking futures-executor v0.3.21
[INFO] [stderr]     Checking futures v0.3.21
[INFO] [stderr]     Checking tokio-serial v5.4.3
[INFO] [stderr]     Checking electricui-cli v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `FramingError` is never constructed
[INFO] [stdout]   --> src/error.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct FramingError(pub electricui_embedded::wire::framing::Error);
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/opts.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 | /     /// Serial device path
[INFO] [stdout] 42 | |     #[structopt(name = "device")]
[INFO] [stdout] 43 | |     pub device: String,
[INFO] [stdout]    | |______________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `electricui-cli` (bin "electricui") due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: struct `FramingError` is never constructed
[INFO] [stdout]   --> src/error.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct FramingError(pub electricui_embedded::wire::framing::Error);
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/opts.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 | /     /// Serial device path
[INFO] [stdout] 42 | |     #[structopt(name = "device")]
[INFO] [stdout] 43 | |     pub device: String,
[INFO] [stdout]    | |______________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `electricui-cli` (bin "electricui" test) due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "d65b3a60cdc3309b81cc46f7c4de17bc1c2c19b57a290362d73fbf3528c7338b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d65b3a60cdc3309b81cc46f7c4de17bc1c2c19b57a290362d73fbf3528c7338b", kill_on_drop: false }`
[INFO] [stdout] d65b3a60cdc3309b81cc46f7c4de17bc1c2c19b57a290362d73fbf3528c7338b