[INFO] updating cached repository https://github.com/bschwind/mqtt-broker
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] [stderr] From https://github.com/bschwind/mqtt-broker
[INFO] [stderr]    cef1823..56a8188  master     -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 56a818819a1c3b0910502fc3f9eeace9c54bec76
[INFO] checking bschwind/mqtt-broker against master#0d2817a439c2ad9fe343f6347eb6d90947893363 for pr-67531
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbschwind%2Fmqtt-broker" "/workspace/builds/worker-11/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bschwind/mqtt-broker on toolchain 0d2817a439c2ad9fe343f6347eb6d90947893363
[INFO] running `"/workspace/cargo-home/bin/cargo" "+0d2817a439c2ad9fe343f6347eb6d90947893363" "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-11/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" "+0d2817a439c2ad9fe343f6347eb6d90947893363" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+0d2817a439c2ad9fe343f6347eb6d90947893363" "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] f452de3fdbe5f03d99048498700f4454109b8b62ea7a62f1bc48b8fa5e0ff78a
[INFO] running `"docker" "start" "-a" "f452de3fdbe5f03d99048498700f4454109b8b62ea7a62f1bc48b8fa5e0ff78a"`
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]     Checking bytes v0.5.2
[INFO] [stderr]     Checking futures-channel v0.3.1
[INFO] [stderr]    Compiling toml v0.5.5
[INFO] [stderr]    Compiling derivative v1.0.3
[INFO] [stderr]     Checking tokio v0.2.4
[INFO] [stderr]    Compiling proc-macro-crate v0.1.4
[INFO] [stderr]     Checking tokio-util v0.2.0
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling num_enum_derive v0.4.2
[INFO] [stderr]    Compiling futures-macro v0.3.1
[INFO] [stderr]     Checking num_enum v0.4.2
[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_string`
[INFO] [stderr]   --> src/encoder.rs:30:4
[INFO] [stderr]    |
[INFO] [stderr] 30 | fn encode_string(value: &str, bytes: &mut BytesMut) {
[INFO] [stderr]    |    ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `encode_binary_data`
[INFO] [stderr]   --> src/encoder.rs:35:4
[INFO] [stderr]    |
[INFO] [stderr] 35 | fn encode_binary_data(value: &[u8], bytes: &mut BytesMut) {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `encode_property`
[INFO] [stderr]   --> src/encoder.rs:40:4
[INFO] [stderr]    |
[INFO] [stderr] 40 | fn encode_property(property: &Property, bytes: &mut BytesMut) {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `property_type`
[INFO] [stderr]    --> src/types.rs:424:9
[INFO] [stderr]     |
[INFO] [stderr] 424 |         pub fn property_type(&self) -> PropertyType {
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `encode_string`
[INFO] [stderr]   --> src/encoder.rs:30:4
[INFO] [stderr]    |
[INFO] [stderr] 30 | fn encode_string(value: &str, bytes: &mut BytesMut) {
[INFO] [stderr]    |    ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `encode_binary_data`
[INFO] [stderr]   --> src/encoder.rs:35:4
[INFO] [stderr]    |
[INFO] [stderr] 35 | fn encode_binary_data(value: &[u8], bytes: &mut BytesMut) {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `encode_property`
[INFO] [stderr]   --> src/encoder.rs:40:4
[INFO] [stderr]    |
[INFO] [stderr] 40 | fn encode_property(property: &Property, bytes: &mut BytesMut) {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `property_type`
[INFO] [stderr]    --> src/types.rs:424:9
[INFO] [stderr]     |
[INFO] [stderr] 424 |         pub fn property_type(&self) -> PropertyType {
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 45.66s
[INFO] running `"docker" "inspect" "f452de3fdbe5f03d99048498700f4454109b8b62ea7a62f1bc48b8fa5e0ff78a"`
[INFO] running `"docker" "rm" "-f" "f452de3fdbe5f03d99048498700f4454109b8b62ea7a62f1bc48b8fa5e0ff78a"`
[INFO] [stdout] f452de3fdbe5f03d99048498700f4454109b8b62ea7a62f1bc48b8fa5e0ff78a