[INFO] fetching crate crazyflie-link 0.3.0...
[INFO] checking crazyflie-link-0.3.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate crazyflie-link 0.3.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate crazyflie-link 0.3.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate crazyflie-link 0.3.0
[INFO] tweaked toml for crates.io crate crazyflie-link 0.3.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate crazyflie-link 0.3.0 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 crazyflie-link 0.3.0 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-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4e84014f7f47a6d2604b751f6094bad9179d3bf17e52e7bc7b9ae6ef7ea8df87
[INFO] running `Command { std: "docker" "start" "-a" "4e84014f7f47a6d2604b751f6094bad9179d3bf17e52e7bc7b9ae6ef7ea8df87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4e84014f7f47a6d2604b751f6094bad9179d3bf17e52e7bc7b9ae6ef7ea8df87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e84014f7f47a6d2604b751f6094bad9179d3bf17e52e7bc7b9ae6ef7ea8df87", kill_on_drop: false }`
[INFO] [stdout] 4e84014f7f47a6d2604b751f6094bad9179d3bf17e52e7bc7b9ae6ef7ea8df87
[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 -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] cc4c907d5c850670719d6be3f50b5f0f1f8eb4573404b7851c3f0b638c1f4fd8
[INFO] running `Command { std: "docker" "start" "-a" "cc4c907d5c850670719d6be3f50b5f0f1f8eb4573404b7851c3f0b638c1f4fd8", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.85
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]     Checking futures-sink v0.3.25
[INFO] [stderr]    Compiling pkg-config v0.3.26
[INFO] [stderr]    Compiling futures-task v0.3.25
[INFO] [stderr]    Compiling futures-channel v0.3.25
[INFO] [stderr]    Compiling futures-util v0.3.25
[INFO] [stderr]     Checking getrandom v0.2.8
[INFO] [stderr]    Compiling thiserror v1.0.38
[INFO] [stderr]    Compiling rusb v0.9.4
[INFO] [stderr]     Checking parking_lot_core v0.9.10
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]     Checking unicode-bidi v0.3.8
[INFO] [stderr]    Compiling unicode-segmentation v1.10.0
[INFO] [stderr]     Checking percent-encoding v2.2.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking form_urlencoded v1.1.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking nanorand v0.7.0
[INFO] [stderr]     Checking parking_lot v0.12.3
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]    Compiling anyhow v1.0.68
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking flume v0.11.0
[INFO] [stderr]     Checking idna v0.3.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling libusb1-sys v0.7.0
[INFO] [stderr]     Checking url v2.3.1
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling syn v2.0.66
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling tokio-macros v2.4.0
[INFO] [stderr]    Compiling async-trait v0.1.83
[INFO] [stderr]    Compiling pin-project-internal v1.0.12
[INFO] [stderr]    Compiling futures-macro v0.3.25
[INFO] [stderr]    Compiling thiserror-impl v1.0.38
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]     Checking tokio v1.40.0
[INFO] [stderr]     Checking pin-project v1.0.12
[INFO] [stderr]     Checking flume v0.10.14
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]     Checking crazyradio v0.3.0
[INFO] [stderr]     Checking futures-executor v0.3.25
[INFO] [stderr]     Checking futures v0.3.25
[INFO] [stderr]     Checking crazyflie-link v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]   --> examples/bootloader.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | struct BootloaderInfo {
[INFO] [stdout]    |        -------------- fields in this struct
[INFO] [stdout] 22 |     id: u8,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 23 |     protocol_version: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 24 |     page_size: u16,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 25 |     buffer_pages: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 26 |     flash_pages: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 27 |     start_page: u16,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 28 |     cpuid: u16,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BootloaderInfo` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[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]   --> examples/bootloader.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | /     #[structopt(name = "URI")]
[INFO] [stdout] 17 | |     uri: Option<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 `crazyflie-link` (example "bootloader") due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> examples/benchmark.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | /     #[structopt(name = "URI")]
[INFO] [stdout] 21 | |     link_uri: 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 `crazyflie-link` (example "benchmark") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "cc4c907d5c850670719d6be3f50b5f0f1f8eb4573404b7851c3f0b638c1f4fd8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc4c907d5c850670719d6be3f50b5f0f1f8eb4573404b7851c3f0b638c1f4fd8", kill_on_drop: false }`
[INFO] [stdout] cc4c907d5c850670719d6be3f50b5f0f1f8eb4573404b7851c3f0b638c1f4fd8