[INFO] cloning repository https://github.com/zhao-kun/mqtt-bench
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zhao-kun/mqtt-bench" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzhao-kun%2Fmqtt-bench", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzhao-kun%2Fmqtt-bench'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c8ae57c0525690c1154de8b5292cc85bd472a778
[INFO] testing zhao-kun/mqtt-bench against master#0d13f6afeba4935499abe0c9a07426c94492c94e for pr-96025
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzhao-kun%2Fmqtt-bench" "/workspace/builds/worker-22/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-22/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zhao-kun/mqtt-bench on toolchain 0d13f6afeba4935499abe0c9a07426c94492c94e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d13f6afeba4935499abe0c9a07426c94492c94e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/zhao-kun/mqtt-bench
[INFO] finished tweaking git repo https://github.com/zhao-kun/mqtt-bench
[INFO] tweaked toml for git repo https://github.com/zhao-kun/mqtt-bench written to /workspace/builds/worker-22/source/Cargo.toml
[INFO] crate git repo https://github.com/zhao-kun/mqtt-bench already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d13f6afeba4935499abe0c9a07426c94492c94e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded atomic-shim v0.2.0
[INFO] [stderr]   Downloaded bumpalo v3.9.0
[INFO] [stderr]   Downloaded metrics-exporter-prometheus v0.7.0
[INFO] [stderr]   Downloaded atomic-counter v1.0.1
[INFO] [stderr]   Downloaded mqtt-protocol v0.11.1
[INFO] [stderr]   Downloaded clap_derive v3.0.0
[INFO] [stderr]   Downloaded metrics v0.17.1
[INFO] [stderr]   Downloaded metrics-util v0.10.2
[INFO] [stderr]   Downloaded clap v3.0.0
[INFO] [stderr]   Downloaded metrics-macros v0.4.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+0d13f6afeba4935499abe0c9a07426c94492c94e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4cd51e736ce4cbc786b48fbd7a1dcfc6ea17ef81c838ac72b0a0184bf36b64b6
[INFO] running `Command { std: "docker" "start" "-a" "4cd51e736ce4cbc786b48fbd7a1dcfc6ea17ef81c838ac72b0a0184bf36b64b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4cd51e736ce4cbc786b48fbd7a1dcfc6ea17ef81c838ac72b0a0184bf36b64b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4cd51e736ce4cbc786b48fbd7a1dcfc6ea17ef81c838ac72b0a0184bf36b64b6", kill_on_drop: false }`
[INFO] [stdout] 4cd51e736ce4cbc786b48fbd7a1dcfc6ea17ef81c838ac72b0a0184bf36b64b6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+0d13f6afeba4935499abe0c9a07426c94492c94e" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9b254b8f039e0fbe7b8725a0dc27ee6d9d48666314487be98c926fa021d922c6
[INFO] running `Command { std: "docker" "start" "-a" "9b254b8f039e0fbe7b8725a0dc27ee6d9d48666314487be98c926fa021d922c6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.84
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling once_cell v1.9.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.8
[INFO] [stderr]    Compiling smallvec v1.7.0
[INFO] [stderr]    Compiling futures-core v0.3.19
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling futures-task v0.3.19
[INFO] [stderr]    Compiling futures-channel v0.3.19
[INFO] [stderr]    Compiling futures-util v0.3.19
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling bytes v1.1.0
[INFO] [stderr]    Compiling futures-sink v0.3.19
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling futures-io v0.3.19
[INFO] [stderr]    Compiling slab v0.4.5
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling metrics v0.17.1
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling serde_derive v1.0.133
[INFO] [stderr]    Compiling itoa v1.0.1
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[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling serde v1.0.133
[INFO] [stderr]    Compiling try-lock v0.2.3
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]    Compiling endian-type v0.1.2
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling tower-service v0.3.1
[INFO] [stderr]    Compiling atomic-shim v0.2.0
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[INFO] [stderr]    Compiling itoa v0.4.8
[INFO] [stderr]    Compiling linked-hash-map v0.5.4
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[INFO] [stderr]    Compiling textwrap v0.14.2
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[INFO] [stderr]    Compiling instant v0.1.12
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[INFO] [stderr]    Compiling tracing-core v0.1.21
[INFO] [stderr]    Compiling sys-info v0.9.1
[INFO] [stderr]    Compiling nibble_vec v0.1.0
[INFO] [stderr]    Compiling raw-cpuid v10.2.0
[INFO] [stderr]    Compiling yaml-rust v0.4.5
[INFO] [stderr]    Compiling ahash v0.7.6
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling http v0.2.6
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling http-body v0.4.4
[INFO] [stderr]    Compiling tracing v0.1.29
[INFO] [stderr]    Compiling want v0.3.0
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling os_str_bytes v6.0.0
[INFO] [stderr]    Compiling quote v1.0.14
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling num_cpus v1.13.1
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling mio v0.7.14
[INFO] [stderr]    Compiling socket2 v0.4.2
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling radix_trie v0.2.1
[INFO] [stderr]    Compiling quanta v0.9.3
[INFO] [stderr]    Compiling ordered-float v2.10.0
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling parking_lot v0.11.2
[INFO] [stderr]    Compiling dashmap v4.0.2
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling futures-macro v0.3.19
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling metrics-macros v0.4.1
[INFO] [stderr]    Compiling clap_derive v3.0.0
[INFO] [stderr]    Compiling tokio v1.15.0
[INFO] [stderr]    Compiling metrics-util v0.10.2
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling clap v3.0.0
[INFO] [stderr]    Compiling futures-executor v0.3.19
[INFO] [stderr]    Compiling futures v0.3.19
[INFO] [stderr]    Compiling mqtt-protocol v0.11.1
[INFO] [stderr]    Compiling hyper v0.14.16
[INFO] [stderr]    Compiling serde_yaml v0.8.23
[INFO] [stderr]    Compiling metrics-exporter-prometheus v0.7.0
[INFO] [stderr]    Compiling mqtt-bench v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/main.rs:69:9
[INFO] [stdout]    |
[INFO] [stdout] 69 |     for i in (0..connection).rev() {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[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] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 11s
[INFO] running `Command { std: "docker" "inspect" "9b254b8f039e0fbe7b8725a0dc27ee6d9d48666314487be98c926fa021d922c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b254b8f039e0fbe7b8725a0dc27ee6d9d48666314487be98c926fa021d922c6", kill_on_drop: false }`
[INFO] [stdout] 9b254b8f039e0fbe7b8725a0dc27ee6d9d48666314487be98c926fa021d922c6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+0d13f6afeba4935499abe0c9a07426c94492c94e" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 405a9fd9df43bda12021eb1651dbea8bcdd170f8f4b957369556a29b03f8c29b
[INFO] running `Command { std: "docker" "start" "-a" "405a9fd9df43bda12021eb1651dbea8bcdd170f8f4b957369556a29b03f8c29b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling mqtt-bench v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/main.rs:69:9
[INFO] [stdout]    |
[INFO] [stdout] 69 |     for i in (0..connection).rev() {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[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] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 44.53s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/mqtt_bench-b85b0199b3eeb865)
[INFO] running `Command { std: "docker" "inspect" "405a9fd9df43bda12021eb1651dbea8bcdd170f8f4b957369556a29b03f8c29b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "405a9fd9df43bda12021eb1651dbea8bcdd170f8f4b957369556a29b03f8c29b", kill_on_drop: false }`
[INFO] [stdout] 405a9fd9df43bda12021eb1651dbea8bcdd170f8f4b957369556a29b03f8c29b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+0d13f6afeba4935499abe0c9a07426c94492c94e" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9cddf1db0dac5ffc4fa8412c35522d0f19ab985ddfb5aa9ac1efa2f54f43e951
[INFO] running `Command { std: "docker" "start" "-a" "9cddf1db0dac5ffc4fa8412c35522d0f19ab985ddfb5aa9ac1efa2f54f43e951", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/main.rs:69:9
[INFO] [stderr]    |
[INFO] [stderr] 69 |     for i in (0..connection).rev() {
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `mqtt-bench` (bin "mqtt-bench" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.59s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/mqtt_bench-b85b0199b3eeb865)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test config::tests::spec_should_be_unmarshal ... ok
[INFO] [stdout] test config::tests::spec_should_be_unmarshal2 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "9cddf1db0dac5ffc4fa8412c35522d0f19ab985ddfb5aa9ac1efa2f54f43e951", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9cddf1db0dac5ffc4fa8412c35522d0f19ab985ddfb5aa9ac1efa2f54f43e951", kill_on_drop: false }`
[INFO] [stdout] 9cddf1db0dac5ffc4fa8412c35522d0f19ab985ddfb5aa9ac1efa2f54f43e951