[INFO] cloning repository https://github.com/taishi-sama/rv-emu-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/taishi-sama/rv-emu-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftaishi-sama%2Frv-emu-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftaishi-sama%2Frv-emu-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 49e5fa686a3fcfd1af327b8e4a1802012dc2271c
[INFO] checking taishi-sama/rv-emu-rs against master#d255c6a57c393db6221b1ff700daea478436f1cd for pr-122317
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftaishi-sama%2Frv-emu-rs" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/taishi-sama/rv-emu-rs on toolchain d255c6a57c393db6221b1ff700daea478436f1cd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d255c6a57c393db6221b1ff700daea478436f1cd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/taishi-sama/rv-emu-rs
[INFO] finished tweaking git repo https://github.com/taishi-sama/rv-emu-rs
[INFO] tweaked toml for git repo https://github.com/taishi-sama/rv-emu-rs written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/taishi-sama/rv-emu-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" "+d255c6a57c393db6221b1ff700daea478436f1cd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking taishi-sama/rv-emu-rs against try#1f7553361c08f8eafdc645e09215667278ab86f4 for pr-122317
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftaishi-sama%2Frv-emu-rs" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/taishi-sama/rv-emu-rs on toolchain 1f7553361c08f8eafdc645e09215667278ab86f4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f7553361c08f8eafdc645e09215667278ab86f4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/taishi-sama/rv-emu-rs
[INFO] finished tweaking git repo https://github.com/taishi-sama/rv-emu-rs
[INFO] tweaked toml for git repo https://github.com/taishi-sama/rv-emu-rs written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/taishi-sama/rv-emu-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" "+1f7553361c08f8eafdc645e09215667278ab86f4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking taishi-sama/rv-emu-rs against try#1f7553361c08f8eafdc645e09215667278ab86f4 for pr-122317
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftaishi-sama%2Frv-emu-rs" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/taishi-sama/rv-emu-rs on toolchain 1f7553361c08f8eafdc645e09215667278ab86f4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f7553361c08f8eafdc645e09215667278ab86f4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/taishi-sama/rv-emu-rs
[INFO] finished tweaking git repo https://github.com/taishi-sama/rv-emu-rs
[INFO] tweaked toml for git repo https://github.com/taishi-sama/rv-emu-rs written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/taishi-sama/rv-emu-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" "+1f7553361c08f8eafdc645e09215667278ab86f4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded gdbstub v0.6.6
[INFO] [stderr]   Downloaded gdbstub_arch v0.2.4
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1f7553361c08f8eafdc645e09215667278ab86f4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 001ed4d82c82d9f7e143f0af2018f014b9281b093d19006676981040d28469ef
[INFO] running `Command { std: "docker" "start" "-a" "001ed4d82c82d9f7e143f0af2018f014b9281b093d19006676981040d28469ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "001ed4d82c82d9f7e143f0af2018f014b9281b093d19006676981040d28469ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "001ed4d82c82d9f7e143f0af2018f014b9281b093d19006676981040d28469ef", kill_on_drop: false }`
[INFO] [stdout] 001ed4d82c82d9f7e143f0af2018f014b9281b093d19006676981040d28469ef
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1f7553361c08f8eafdc645e09215667278ab86f4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e161b3416c0585d3be2de7c1d77f2530ee2a976694eb9af8ca83d0e992a6fad5
[INFO] running `Command { std: "docker" "start" "-a" "e161b3416c0585d3be2de7c1d77f2530ee2a976694eb9af8ca83d0e992a6fad5", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling paste v1.0.12
[INFO] [stderr]     Checking log v0.4.19
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking managed v0.8.0
[INFO] [stderr]     Checking gdbstub v0.6.6
[INFO] [stderr]     Checking gdbstub_arch v0.2.4
[INFO] [stderr]     Checking rv-emu-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `path::Path`
[INFO] [stdout]  --> src/elf_analyzer.rs:3:33
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{collections::HashMap, path::Path};
[INFO] [stdout]   |                                 ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `TcpListener`, `TcpStream`, `io`
[INFO] [stdout]  --> src/emulator.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{net::{TcpListener, TcpStream}, io};
[INFO] [stdout]   |                 ^^^^^^^^^^^  ^^^^^^^^^   ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BlockingEventLoop`, `Event`, `GdbStub`, `SingleThreadStopReason`, `WaitForStopReasonError`, `common::Signal`, `conn::Connection`, `target::Target`
[INFO] [stdout]  --> src/emulator.rs:3:22
[INFO] [stdout]   |
[INFO] [stdout] 3 | ...::{GdbStub, run_blocking::{BlockingEventLoop, Event, WaitForStopReasonError}, SingleThreadStopReason}, target::Target, conn::Connection, common::Signa...
[INFO] [stdout]   |       ^^^^^^^                 ^^^^^^^^^^^^^^^^^  ^^^^^  ^^^^^^^^^^^^^^^^^^^^^^   ^^^^^^^^^^^^^^^^^^^^^^   ^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `path::Path`
[INFO] [stdout]  --> src/elf_analyzer.rs:3:33
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{collections::HashMap, path::Path};
[INFO] [stdout]   |                                 ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `TcpListener`, `TcpStream`, `io`
[INFO] [stdout]  --> src/emulator.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{net::{TcpListener, TcpStream}, io};
[INFO] [stdout]   |                 ^^^^^^^^^^^  ^^^^^^^^^   ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BlockingEventLoop`, `Event`, `GdbStub`, `SingleThreadStopReason`, `WaitForStopReasonError`, `common::Signal`, `conn::Connection`, `target::Target`
[INFO] [stdout]  --> src/emulator.rs:3:22
[INFO] [stdout]   |
[INFO] [stdout] 3 | ...::{GdbStub, run_blocking::{BlockingEventLoop, Event, WaitForStopReasonError}, SingleThreadStopReason}, target::Target, conn::Connection, common::Signa...
[INFO] [stdout]   |       ^^^^^^^                 ^^^^^^^^^^^^^^^^^  ^^^^^  ^^^^^^^^^^^^^^^^^^^^^^   ^^^^^^^^^^^^^^^^^^^^^^   ^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FormatB` is never constructed
[INFO] [stdout]    --> src/ops_decode.rs:123:8
[INFO] [stdout]     |
[INFO] [stdout] 123 | struct FormatB {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_format_b` is never used
[INFO] [stdout]    --> src/ops_decode.rs:129:4
[INFO] [stdout]     |
[INFO] [stdout] 129 | fn parse_format_b(word: u32) -> FormatB {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FormatCSR` is never constructed
[INFO] [stdout]    --> src/ops_decode.rs:146:8
[INFO] [stdout]     |
[INFO] [stdout] 146 | struct FormatCSR {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_format_csr` is never used
[INFO] [stdout]    --> src/ops_decode.rs:152:4
[INFO] [stdout]     |
[INFO] [stdout] 152 | fn parse_format_csr(word: u32) -> FormatCSR {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FormatI` is never constructed
[INFO] [stdout]    --> src/ops_decode.rs:160:8
[INFO] [stdout]     |
[INFO] [stdout] 160 | struct FormatI {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_format_i` is never used
[INFO] [stdout]    --> src/ops_decode.rs:166:4
[INFO] [stdout]     |
[INFO] [stdout] 166 | fn parse_format_i(word: u32) -> FormatI {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FormatJ` is never constructed
[INFO] [stdout]    --> src/ops_decode.rs:182:8
[INFO] [stdout]     |
[INFO] [stdout] 182 | struct FormatJ {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_format_j` is never used
[INFO] [stdout]    --> src/ops_decode.rs:187:4
[INFO] [stdout]     |
[INFO] [stdout] 187 | fn parse_format_j(word: u32) -> FormatJ {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FormatR` is never constructed
[INFO] [stdout]    --> src/ops_decode.rs:204:8
[INFO] [stdout]     |
[INFO] [stdout] 204 | struct FormatR {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_format_r` is never used
[INFO] [stdout]    --> src/ops_decode.rs:210:4
[INFO] [stdout]     |
[INFO] [stdout] 210 | fn parse_format_r(word: u32) -> FormatR {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FormatR2` is never constructed
[INFO] [stdout]    --> src/ops_decode.rs:221:8
[INFO] [stdout]     |
[INFO] [stdout] 221 | struct FormatR2 {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_format_r2` is never used
[INFO] [stdout]    --> src/ops_decode.rs:228:4
[INFO] [stdout]     |
[INFO] [stdout] 228 | fn parse_format_r2(word: u32) -> FormatR2 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FormatS` is never constructed
[INFO] [stdout]    --> src/ops_decode.rs:238:8
[INFO] [stdout]     |
[INFO] [stdout] 238 | struct FormatS {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_format_s` is never used
[INFO] [stdout]    --> src/ops_decode.rs:244:4
[INFO] [stdout]     |
[INFO] [stdout] 244 | fn parse_format_s(word: u32) -> FormatS {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FormatU` is never constructed
[INFO] [stdout]    --> src/ops_decode.rs:260:8
[INFO] [stdout]     |
[INFO] [stdout] 260 | struct FormatU {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_format_u` is never used
[INFO] [stdout]    --> src/ops_decode.rs:265:4
[INFO] [stdout]     |
[INFO] [stdout] 265 | fn parse_format_u(word: u32) -> FormatU {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `to_emu_buffer` is never read
[INFO] [stdout]  --> src/uart.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct UART {
[INFO] [stdout]   |            ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 6 |     to_emu_buffer: VecDeque<u8>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `rs1` and `rs2` are never read
[INFO] [stdout]    --> src/ops_decode.rs:124:2
[INFO] [stdout]     |
[INFO] [stdout] 123 | struct FormatB {
[INFO] [stdout]     |        ------- fields in this struct
[INFO] [stdout] 124 |     rs1: u8,
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 125 |     rs2: u8,
[INFO] [stdout]     |     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FormatCSR` is never constructed
[INFO] [stdout]    --> src/ops_decode.rs:146:8
[INFO] [stdout]     |
[INFO] [stdout] 146 | struct FormatCSR {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_format_csr` is never used
[INFO] [stdout]    --> src/ops_decode.rs:152:4
[INFO] [stdout]     |
[INFO] [stdout] 152 | fn parse_format_csr(word: u32) -> FormatCSR {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `rd` and `rs1` are never read
[INFO] [stdout]    --> src/ops_decode.rs:161:2
[INFO] [stdout]     |
[INFO] [stdout] 160 | struct FormatI {
[INFO] [stdout]     |        ------- fields in this struct
[INFO] [stdout] 161 |     rd: u8,
[INFO] [stdout]     |     ^^
[INFO] [stdout] 162 |     rs1: u8,
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `rd` is never read
[INFO] [stdout]    --> src/ops_decode.rs:183:2
[INFO] [stdout]     |
[INFO] [stdout] 182 | struct FormatJ {
[INFO] [stdout]     |        ------- field in this struct
[INFO] [stdout] 183 |     rd: u8,
[INFO] [stdout]     |     ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FormatR` is never constructed
[INFO] [stdout]    --> src/ops_decode.rs:204:8
[INFO] [stdout]     |
[INFO] [stdout] 204 | struct FormatR {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_format_r` is never used
[INFO] [stdout]    --> src/ops_decode.rs:210:4
[INFO] [stdout]     |
[INFO] [stdout] 210 | fn parse_format_r(word: u32) -> FormatR {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FormatR2` is never constructed
[INFO] [stdout]    --> src/ops_decode.rs:221:8
[INFO] [stdout]     |
[INFO] [stdout] 221 | struct FormatR2 {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_format_r2` is never used
[INFO] [stdout]    --> src/ops_decode.rs:228:4
[INFO] [stdout]     |
[INFO] [stdout] 228 | fn parse_format_r2(word: u32) -> FormatR2 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `rs1` and `rs2` are never read
[INFO] [stdout]    --> src/ops_decode.rs:239:2
[INFO] [stdout]     |
[INFO] [stdout] 238 | struct FormatS {
[INFO] [stdout]     |        ------- fields in this struct
[INFO] [stdout] 239 |     rs1: u8,
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 240 |     rs2: u8,
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FormatU` is never constructed
[INFO] [stdout]    --> src/ops_decode.rs:260:8
[INFO] [stdout]     |
[INFO] [stdout] 260 | struct FormatU {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_format_u` is never used
[INFO] [stdout]    --> src/ops_decode.rs:265:4
[INFO] [stdout]     |
[INFO] [stdout] 265 | fn parse_format_u(word: u32) -> FormatU {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `to_emu_buffer` is never read
[INFO] [stdout]  --> src/uart.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct UART {
[INFO] [stdout]   |            ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 6 |     to_emu_buffer: VecDeque<u8>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 20 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.31s
[INFO] running `Command { std: "docker" "inspect" "e161b3416c0585d3be2de7c1d77f2530ee2a976694eb9af8ca83d0e992a6fad5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e161b3416c0585d3be2de7c1d77f2530ee2a976694eb9af8ca83d0e992a6fad5", kill_on_drop: false }`
[INFO] [stdout] e161b3416c0585d3be2de7c1d77f2530ee2a976694eb9af8ca83d0e992a6fad5