[INFO] fetching crate bitbox-api 0.12.0...
[INFO] checking bitbox-api-0.12.0 against try#0611f7de057c584b8771102fde7aed6c70c71d3b for pr-146440
[INFO] extracting crate bitbox-api 0.12.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate bitbox-api 0.12.0
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate bitbox-api 0.12.0
[INFO] tweaked toml for crates.io crate bitbox-api 0.12.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate bitbox-api 0.12.0 on toolchain 0611f7de057c584b8771102fde7aed6c70c71d3b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate bitbox-api 0.12.0 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" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aedec5f562bee011a1aa9e4d173892c24f9cfe4bbc0ea1e0fab11b7155f5929a
[INFO] running `Command { std: "docker" "start" "-a" "aedec5f562bee011a1aa9e4d173892c24f9cfe4bbc0ea1e0fab11b7155f5929a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aedec5f562bee011a1aa9e4d173892c24f9cfe4bbc0ea1e0fab11b7155f5929a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aedec5f562bee011a1aa9e4d173892c24f9cfe4bbc0ea1e0fab11b7155f5929a", kill_on_drop: false }`
[INFO] [stdout] aedec5f562bee011a1aa9e4d173892c24f9cfe4bbc0ea1e0fab11b7155f5929a
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0a2262eb801c1f79b18a2e0f302bf44afc99db8e5c0fa6e6d1e0b29947e98849
[INFO] running `Command { std: "docker" "start" "-a" "0a2262eb801c1f79b18a2e0f302bf44afc99db8e5c0fa6e6d1e0b29947e98849", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.104
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[INFO] [stderr]     Checking bitbox-api v0.12.0 (/opt/rustwide/workdir)
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[INFO] [stdout] error: struct `BitBox` is never constructed
[INFO] [stdout]   --> src/lib.rs:70:12
[INFO] [stdout]    |
[INFO] [stdout] 70 | pub struct BitBox<R: Runtime> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]    = note: `#[deny(unused_unconstructable_pub_struct)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `PairingBitBox` is never constructed
[INFO] [stdout]    --> src/lib.rs:214:12
[INFO] [stdout]     |
[INFO] [stdout] 214 | pub struct PairingBitBox<R: Runtime> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `PairedBitBox` is never constructed
[INFO] [stdout]    --> src/lib.rs:269:12
[INFO] [stdout]     |
[INFO] [stdout] 269 | pub struct PairedBitBox<R: Runtime> {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from` is never used
[INFO] [stdout]   --> src/lib.rs:78:14
[INFO] [stdout]    |
[INFO] [stdout] 77 | impl<R: Runtime> BitBox<R> {
[INFO] [stdout]    | -------------------------- associated function in this implementation
[INFO] [stdout] 78 |     async fn from(
[INFO] [stdout]    |              ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `U2fHidCommunication` is never constructed
[INFO] [stdout]   --> src/communication.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub struct U2fHidCommunication {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from` is never used
[INFO] [stdout]   --> src/communication.rs:48:12
[INFO] [stdout]    |
[INFO] [stdout] 47 | impl U2fHidCommunication {
[INFO] [stdout]    | ------------------------ associated function in this implementation
[INFO] [stdout] 48 |     pub fn from(read_write: Box<dyn ReadWrite>, cmd: u8) -> Self {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `HWW_INFO` is never used
[INFO] [stdout]    --> src/communication.rs:138:7
[INFO] [stdout]     |
[INFO] [stdout] 138 | const HWW_INFO: u8 = b'i';
[INFO] [stdout]     |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_info` is never used
[INFO] [stdout]    --> src/communication.rs:177:10
[INFO] [stdout]     |
[INFO] [stdout] 177 | async fn get_info(communication: &dyn ReadWrite) -> Result<Info, Error> {
[INFO] [stdout]     |          ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from` is never used
[INFO] [stdout]    --> src/communication.rs:225:18
[INFO] [stdout]     |
[INFO] [stdout] 224 | impl<R: Runtime> HwwCommunication<R> {
[INFO] [stdout]     | ------------------------------------ associated function in this implementation
[INFO] [stdout] 225 |     pub async fn from(communication: Box<dyn ReadWrite>) -> Result<Self, Error> {
[INFO] [stdout]     |                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `HEADER_INIT_LEN` is never used
[INFO] [stdout]  --> src/u2fframing.rs:9:7
[INFO] [stdout]   |
[INFO] [stdout] 9 | const HEADER_INIT_LEN: usize = 7;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `HEADER_CONT_LEN` is never used
[INFO] [stdout]   --> src/u2fframing.rs:10:7
[INFO] [stdout]    |
[INFO] [stdout] 10 | const HEADER_CONT_LEN: usize = 5;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MAX_LEN` is never used
[INFO] [stdout]   --> src/u2fframing.rs:19:11
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub const MAX_LEN: usize = 129 * 64;
[INFO] [stdout]    |           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `U2FFraming` is never used
[INFO] [stdout]   --> src/u2fframing.rs:21:11
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub trait U2FFraming {
[INFO] [stdout]    |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_header` is never used
[INFO] [stdout]   --> src/u2fframing.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub fn parse_header(buf: &[u8]) -> io::Result<(u32, u8, u16)> {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `encode_header_init` is never used
[INFO] [stdout]   --> src/u2fframing.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub fn encode_header_init(cid: u32, cmd: u8, len: u16, mut buf: &mut [u8]) -> io::Result<usize> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `encode_header_cont` is never used
[INFO] [stdout]   --> src/u2fframing.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub fn encode_header_cont(cid: u32, seq: u8, mut buf: &mut [u8]) -> io::Result<usize> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generate_cid` is never used
[INFO] [stdout]   --> src/u2fframing.rs:68:8
[INFO] [stdout]    |
[INFO] [stdout] 68 | pub fn generate_cid() -> u32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `U2fHid` is never constructed
[INFO] [stdout]    --> src/u2fframing.rs:145:12
[INFO] [stdout]     |
[INFO] [stdout] 145 | pub struct U2fHid {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `new` and `get_encoded_len` are never used
[INFO] [stdout]    --> src/u2fframing.rs:151:12
[INFO] [stdout]     |
[INFO] [stdout] 150 | impl U2fHid {
[INFO] [stdout]     | ----------- associated functions in this implementation
[INFO] [stdout] 151 |     pub fn new(cmd: u8) -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 163 |     fn get_encoded_len(len: u16) -> usize {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `bitbox-api` (lib) due to 3 previous errors; 16 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "0a2262eb801c1f79b18a2e0f302bf44afc99db8e5c0fa6e6d1e0b29947e98849", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a2262eb801c1f79b18a2e0f302bf44afc99db8e5c0fa6e6d1e0b29947e98849", kill_on_drop: false }`
[INFO] [stdout] 0a2262eb801c1f79b18a2e0f302bf44afc99db8e5c0fa6e6d1e0b29947e98849
