[INFO] cloning repository https://github.com/yaozijian/mqttlib
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yaozijian/mqttlib" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyaozijian%2Fmqttlib", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyaozijian%2Fmqttlib'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8d208dd74a9fa528c52a550f21d5124a015cc76b
[INFO] checking yaozijian/mqttlib against try#c659ee110de67e82444e4b6c8407c1a9af9c2cf6 for pr-145608
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyaozijian%2Fmqttlib" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/yaozijian/mqttlib
[INFO] finished tweaking git repo https://github.com/yaozijian/mqttlib
[INFO] tweaked toml for git repo https://github.com/yaozijian/mqttlib written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/yaozijian/mqttlib on toolchain c659ee110de67e82444e4b6c8407c1a9af9c2cf6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/yaozijian/mqttlib 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" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded byteorder v1.3.1
[INFO] [stderr]   Downloaded bincode v1.1.3
[INFO] [stderr]   Downloaded autocfg v0.1.2
[INFO] [stderr]   Downloaded serde v1.0.90
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 78d5827c850e16c4b3e1d3c2ddb7568d84351d21916d74864f4f762ac55b2c68
[INFO] running `Command { std: "docker" "start" "-a" "78d5827c850e16c4b3e1d3c2ddb7568d84351d21916d74864f4f762ac55b2c68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "78d5827c850e16c4b3e1d3c2ddb7568d84351d21916d74864f4f762ac55b2c68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78d5827c850e16c4b3e1d3c2ddb7568d84351d21916d74864f4f762ac55b2c68", kill_on_drop: false }`
[INFO] [stdout] 78d5827c850e16c4b3e1d3c2ddb7568d84351d21916d74864f4f762ac55b2c68
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6b2ca6c7fd532c45dfdd8580009f042168a53cf1db53be68762917eebe8d517b
[INFO] running `Command { std: "docker" "start" "-a" "6b2ca6c7fd532c45dfdd8580009f042168a53cf1db53be68762917eebe8d517b", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.2
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]    Compiling serde v1.0.90
[INFO] [stderr]    Compiling bincode v1.1.3
[INFO] [stderr]     Checking mqttlib v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: constant `FLAGS_RESERVED_0` is never used
[INFO] [stdout]   --> src/head.rs:59:7
[INFO] [stdout]    |
[INFO] [stdout] 59 | const FLAGS_RESERVED_0: u8 = 0;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `FLAGS_QO_S_1` is never used
[INFO] [stdout]   --> src/head.rs:60:7
[INFO] [stdout]    |
[INFO] [stdout] 60 | const FLAGS_QO_S_1: u8 = 2;
[INFO] [stdout]    |       ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `check_packet_flags` is never used
[INFO] [stdout]    --> src/head.rs:130:5
[INFO] [stdout]     |
[INFO] [stdout] 129 | impl Head {
[INFO] [stdout]     | --------- method in this implementation
[INFO] [stdout] 130 |     fn check_packet_flags(&self) -> bincode::Result<()> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RawPacket` is never constructed
[INFO] [stdout]  --> src/raw_packet.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct RawPacket {
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PktConnect` is never constructed
[INFO] [stdout]  --> src/pkt_connect.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct PktConnect {
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_connect_flags` is never used
[INFO] [stdout]   --> src/pkt_connect.rs:93:5
[INFO] [stdout]    |
[INFO] [stdout] 92 | impl PktConnect {
[INFO] [stdout]    | --------------- method in this implementation
[INFO] [stdout] 93 |     fn get_connect_flags(&self) -> u8 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PktConnAck` is never constructed
[INFO] [stdout]  --> src/pkt_connack.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct PktConnAck {
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `MqttPacket` is never used
[INFO] [stdout]   --> src/mqtt_packet.rs:12:10
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub enum MqttPacket {
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `FromRawPacket` is never used
[INFO] [stdout]   --> src/mqtt_packet.rs:28:7
[INFO] [stdout]    |
[INFO] [stdout] 28 | trait FromRawPacket {
[INFO] [stdout]    |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.01s
[INFO] running `Command { std: "docker" "inspect" "6b2ca6c7fd532c45dfdd8580009f042168a53cf1db53be68762917eebe8d517b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b2ca6c7fd532c45dfdd8580009f042168a53cf1db53be68762917eebe8d517b", kill_on_drop: false }`
[INFO] [stdout] 6b2ca6c7fd532c45dfdd8580009f042168a53cf1db53be68762917eebe8d517b