[INFO] cloning repository https://github.com/twaters/mq_client
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/twaters/mq_client" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftwaters%2Fmq_client", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftwaters%2Fmq_client'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 803ad5e9e92800175f800e6f2b716db84bbbd142
[INFO] checking twaters/mq_client against try#f6e2f78768c57172b99c3e85892f867894dc7e30 for pr-75502
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftwaters%2Fmq_client" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/twaters/mq_client on toolchain f6e2f78768c57172b99c3e85892f867894dc7e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/twaters/mq_client
[INFO] finished tweaking git repo https://github.com/twaters/mq_client
[INFO] tweaked toml for git repo https://github.com/twaters/mq_client written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/twaters/mq_client already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ffe730c371c1bc66599f88b0e342682f3e25e68cc14d9166d901a680fff4f1c0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ffe730c371c1bc66599f88b0e342682f3e25e68cc14d9166d901a680fff4f1c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ffe730c371c1bc66599f88b0e342682f3e25e68cc14d9166d901a680fff4f1c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ffe730c371c1bc66599f88b0e342682f3e25e68cc14d9166d901a680fff4f1c0", kill_on_drop: false }`
[INFO] [stdout] ffe730c371c1bc66599f88b0e342682f3e25e68cc14d9166d901a680fff4f1c0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a2b7744f4fd7ec7229e92429745a21b5b1136f2613b921c7fc7f1a177a8a919a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a2b7744f4fd7ec7229e92429745a21b5b1136f2613b921c7fc7f1a177a8a919a", kill_on_drop: false }`
[INFO] [stderr]    Compiling toml v0.2.1
[INFO] [stderr]    Compiling error-chain v0.10.0
[INFO] [stderr]    Compiling pkg-config v0.3.17
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling zmq v0.9.2
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]    Compiling metadeps v1.1.2
[INFO] [stderr]    Compiling zmq-sys v0.11.0
[INFO] [stderr]     Checking mq_client v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `message`
[INFO] [stdout]  --> src/main.rs:1:22
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn is_checksum_valid(message: &Vec<zmq::Message>) -> bool {
[INFO] [stdout]   |                      ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_message`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `message`
[INFO] [stdout]  --> src/main.rs:1:22
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn is_checksum_valid(message: &Vec<zmq::Message>) -> bool {
[INFO] [stdout]   |                      ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_message`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.00s
[INFO] running `Command { std: "docker" "inspect" "a2b7744f4fd7ec7229e92429745a21b5b1136f2613b921c7fc7f1a177a8a919a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2b7744f4fd7ec7229e92429745a21b5b1136f2613b921c7fc7f1a177a8a919a", kill_on_drop: false }`
[INFO] [stdout] a2b7744f4fd7ec7229e92429745a21b5b1136f2613b921c7fc7f1a177a8a919a