[INFO] cloning repository https://github.com/bschwind/mqtt-broker
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bschwind/mqtt-broker" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbschwind%2Fmqtt-broker"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbschwind%2Fmqtt-broker'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d24300081a75424a5ad8ea271b47960cc222719d
[INFO] checking bschwind/mqtt-broker against try#1a608893c03d7722effeb0058e82770bd36b4b3c for pr-66504-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbschwind%2Fmqtt-broker" "/workspace/builds/worker-5/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bschwind/mqtt-broker on toolchain 1a608893c03d7722effeb0058e82770bd36b4b3c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/bschwind/mqtt-broker
[INFO] finished tweaking git repo https://github.com/bschwind/mqtt-broker
[INFO] tweaked toml for git repo https://github.com/bschwind/mqtt-broker written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/bschwind/mqtt-broker already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] warning: dependency (tokio-util) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr] warning: unused manifest key: dependencies.tokio-util.verison
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4cc06a59f7239dac447a5895fe026d1ea73603c9a2d9df8577e9c35f19d60d09
[INFO] running `"docker" "start" "-a" "4cc06a59f7239dac447a5895fe026d1ea73603c9a2d9df8577e9c35f19d60d09"`
[INFO] [stderr] warning: dependency (tokio-util) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr] warning: unused manifest key: dependencies.tokio-util.verison
[INFO] [stderr]     Checking futures-channel v0.3.1
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]     Checking tokio v0.2.4
[INFO] [stderr]    Compiling futures-macro v0.3.1
[INFO] [stderr]     Checking tokio-util v0.2.0
[INFO] [stderr]     Checking futures-util v0.3.1
[INFO] [stderr]     Checking futures-executor v0.3.1
[INFO] [stderr]     Checking futures v0.3.1
[INFO] [stderr]     Checking mqtt-broker v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: function is never used: `encode_variable_int`
[INFO] [stderr]  --> src/parser.rs:5:4
[INFO] [stderr]   |
[INFO] [stderr] 5 | fn encode_variable_int(value: u32, buf: &mut [u8]) -> usize {
[INFO] [stderr]   |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `parse_string`
[INFO] [stderr]   --> src/parser.rs:60:4
[INFO] [stderr]    |
[INFO] [stderr] 60 | fn parse_string(bytes: &mut BytesMut) -> Result<Option<String>, ParseError> {
[INFO] [stderr]    |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `ConnectReason`
[INFO] [stderr]    --> src/types.rs:130:10
[INFO] [stderr]     |
[INFO] [stderr] 130 | pub enum ConnectReason {
[INFO] [stderr]     |          ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `PublishAckReason`
[INFO] [stderr]    --> src/types.rs:155:10
[INFO] [stderr]     |
[INFO] [stderr] 155 | pub enum PublishAckReason {
[INFO] [stderr]     |          ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `PublishReceivedReason`
[INFO] [stderr]    --> src/types.rs:167:10
[INFO] [stderr]     |
[INFO] [stderr] 167 | pub enum PublishReceivedReason {
[INFO] [stderr]     |          ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `PublishReleaseReason`
[INFO] [stderr]    --> src/types.rs:179:10
[INFO] [stderr]     |
[INFO] [stderr] 179 | pub enum PublishReleaseReason {
[INFO] [stderr]     |          ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `PublishCompleteReason`
[INFO] [stderr]    --> src/types.rs:184:10
[INFO] [stderr]     |
[INFO] [stderr] 184 | pub enum PublishCompleteReason {
[INFO] [stderr]     |          ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `DisconnectReasonCode`
[INFO] [stderr]    --> src/types.rs:189:10
[INFO] [stderr]     |
[INFO] [stderr] 189 | pub enum DisconnectReasonCode {
[INFO] [stderr]     |          ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `AuthenticateReasonCode`
[INFO] [stderr]    --> src/types.rs:221:10
[INFO] [stderr]     |
[INFO] [stderr] 221 | pub enum AuthenticateReasonCode {
[INFO] [stderr]     |          ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `ConnectAckVariableHeader`
[INFO] [stderr]    --> src/types.rs:247:12
[INFO] [stderr]     |
[INFO] [stderr] 247 | pub struct ConnectAckVariableHeader {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `PublishVariableHeader`
[INFO] [stderr]    --> src/types.rs:271:12
[INFO] [stderr]     |
[INFO] [stderr] 271 | pub struct PublishVariableHeader {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `PublishAckVariableHeader`
[INFO] [stderr]    --> src/types.rs:286:12
[INFO] [stderr]     |
[INFO] [stderr] 286 | pub struct PublishAckVariableHeader {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `PublishReceivedVariableHeader`
[INFO] [stderr]    --> src/types.rs:295:12
[INFO] [stderr]     |
[INFO] [stderr] 295 | pub struct PublishReceivedVariableHeader {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `PublishReleaseVariableHeader`
[INFO] [stderr]    --> src/types.rs:304:12
[INFO] [stderr]     |
[INFO] [stderr] 304 | pub struct PublishReleaseVariableHeader {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `PublishCompleteVariableHeader`
[INFO] [stderr]    --> src/types.rs:313:12
[INFO] [stderr]     |
[INFO] [stderr] 313 | pub struct PublishCompleteVariableHeader {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `SubscribeVariableHeader`
[INFO] [stderr]    --> src/types.rs:322:12
[INFO] [stderr]     |
[INFO] [stderr] 322 | pub struct SubscribeVariableHeader {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `SubscribeAckVariableHeader`
[INFO] [stderr]    --> src/types.rs:330:12
[INFO] [stderr]     |
[INFO] [stderr] 330 | pub struct SubscribeAckVariableHeader {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `UnsubscribeVariableHeader`
[INFO] [stderr]    --> src/types.rs:338:12
[INFO] [stderr]     |
[INFO] [stderr] 338 | pub struct UnsubscribeVariableHeader {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `UnsubscribeAckVariableHeader`
[INFO] [stderr]    --> src/types.rs:345:12
[INFO] [stderr]     |
[INFO] [stderr] 345 | pub struct UnsubscribeAckVariableHeader {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `PingRequestVariableHeader`
[INFO] [stderr]    --> src/types.rs:353:12
[INFO] [stderr]     |
[INFO] [stderr] 353 | pub struct PingRequestVariableHeader {}
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `PingResponseVariableHeader`
[INFO] [stderr]    --> src/types.rs:355:12
[INFO] [stderr]     |
[INFO] [stderr] 355 | pub struct PingResponseVariableHeader {}
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `DisconnectVariableHeader`
[INFO] [stderr]    --> src/types.rs:357:12
[INFO] [stderr]     |
[INFO] [stderr] 357 | pub struct DisconnectVariableHeader {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `AuthenticateVariableHeader`
[INFO] [stderr]    --> src/types.rs:368:12
[INFO] [stderr]     |
[INFO] [stderr] 368 | pub struct AuthenticateVariableHeader {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `encode_variable_int`
[INFO] [stderr]  --> src/parser.rs:5:4
[INFO] [stderr]   |
[INFO] [stderr] 5 | fn encode_variable_int(value: u32, buf: &mut [u8]) -> usize {
[INFO] [stderr]   |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `parse_string`
[INFO] [stderr]   --> src/parser.rs:60:4
[INFO] [stderr]    |
[INFO] [stderr] 60 | fn parse_string(bytes: &mut BytesMut) -> Result<Option<String>, ParseError> {
[INFO] [stderr]    |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `ConnectReason`
[INFO] [stderr]    --> src/types.rs:130:10
[INFO] [stderr]     |
[INFO] [stderr] 130 | pub enum ConnectReason {
[INFO] [stderr]     |          ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `PublishAckReason`
[INFO] [stderr]    --> src/types.rs:155:10
[INFO] [stderr]     |
[INFO] [stderr] 155 | pub enum PublishAckReason {
[INFO] [stderr]     |          ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `PublishReceivedReason`
[INFO] [stderr]    --> src/types.rs:167:10
[INFO] [stderr]     |
[INFO] [stderr] 167 | pub enum PublishReceivedReason {
[INFO] [stderr]     |          ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `PublishReleaseReason`
[INFO] [stderr]    --> src/types.rs:179:10
[INFO] [stderr]     |
[INFO] [stderr] 179 | pub enum PublishReleaseReason {
[INFO] [stderr]     |          ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `PublishCompleteReason`
[INFO] [stderr]    --> src/types.rs:184:10
[INFO] [stderr]     |
[INFO] [stderr] 184 | pub enum PublishCompleteReason {
[INFO] [stderr]     |          ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `DisconnectReasonCode`
[INFO] [stderr]    --> src/types.rs:189:10
[INFO] [stderr]     |
[INFO] [stderr] 189 | pub enum DisconnectReasonCode {
[INFO] [stderr]     |          ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `AuthenticateReasonCode`
[INFO] [stderr]    --> src/types.rs:221:10
[INFO] [stderr]     |
[INFO] [stderr] 221 | pub enum AuthenticateReasonCode {
[INFO] [stderr]     |          ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `ConnectAckVariableHeader`
[INFO] [stderr]    --> src/types.rs:247:12
[INFO] [stderr]     |
[INFO] [stderr] 247 | pub struct ConnectAckVariableHeader {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `PublishVariableHeader`
[INFO] [stderr]    --> src/types.rs:271:12
[INFO] [stderr]     |
[INFO] [stderr] 271 | pub struct PublishVariableHeader {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `PublishAckVariableHeader`
[INFO] [stderr]    --> src/types.rs:286:12
[INFO] [stderr]     |
[INFO] [stderr] 286 | pub struct PublishAckVariableHeader {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `PublishReceivedVariableHeader`
[INFO] [stderr]    --> src/types.rs:295:12
[INFO] [stderr]     |
[INFO] [stderr] 295 | pub struct PublishReceivedVariableHeader {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `PublishReleaseVariableHeader`
[INFO] [stderr]    --> src/types.rs:304:12
[INFO] [stderr]     |
[INFO] [stderr] 304 | pub struct PublishReleaseVariableHeader {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `PublishCompleteVariableHeader`
[INFO] [stderr]    --> src/types.rs:313:12
[INFO] [stderr]     |
[INFO] [stderr] 313 | pub struct PublishCompleteVariableHeader {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `SubscribeVariableHeader`
[INFO] [stderr]    --> src/types.rs:322:12
[INFO] [stderr]     |
[INFO] [stderr] 322 | pub struct SubscribeVariableHeader {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `SubscribeAckVariableHeader`
[INFO] [stderr]    --> src/types.rs:330:12
[INFO] [stderr]     |
[INFO] [stderr] 330 | pub struct SubscribeAckVariableHeader {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `UnsubscribeVariableHeader`
[INFO] [stderr]    --> src/types.rs:338:12
[INFO] [stderr]     |
[INFO] [stderr] 338 | pub struct UnsubscribeVariableHeader {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `UnsubscribeAckVariableHeader`
[INFO] [stderr]    --> src/types.rs:345:12
[INFO] [stderr]     |
[INFO] [stderr] 345 | pub struct UnsubscribeAckVariableHeader {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `PingRequestVariableHeader`
[INFO] [stderr]    --> src/types.rs:353:12
[INFO] [stderr]     |
[INFO] [stderr] 353 | pub struct PingRequestVariableHeader {}
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `PingResponseVariableHeader`
[INFO] [stderr]    --> src/types.rs:355:12
[INFO] [stderr]     |
[INFO] [stderr] 355 | pub struct PingResponseVariableHeader {}
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `DisconnectVariableHeader`
[INFO] [stderr]    --> src/types.rs:357:12
[INFO] [stderr]     |
[INFO] [stderr] 357 | pub struct DisconnectVariableHeader {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `AuthenticateVariableHeader`
[INFO] [stderr]    --> src/types.rs:368:12
[INFO] [stderr]     |
[INFO] [stderr] 368 | pub struct AuthenticateVariableHeader {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.97s
[INFO] running `"docker" "inspect" "4cc06a59f7239dac447a5895fe026d1ea73603c9a2d9df8577e9c35f19d60d09"`
[INFO] running `"docker" "rm" "-f" "4cc06a59f7239dac447a5895fe026d1ea73603c9a2d9df8577e9c35f19d60d09"`
[INFO] [stdout] 4cc06a59f7239dac447a5895fe026d1ea73603c9a2d9df8577e9c35f19d60d09