[INFO] fetching crate mqtt-visualizer 0.2.0... [INFO] checking mqtt-visualizer-0.2.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never [INFO] extracting crate mqtt-visualizer 0.2.0 into /workspace/builds/worker-5-tc1/source [INFO] validating manifest of crates.io crate mqtt-visualizer 0.2.0 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate mqtt-visualizer 0.2.0 [INFO] finished tweaking crates.io crate mqtt-visualizer 0.2.0 [INFO] tweaked toml for crates.io crate mqtt-visualizer 0.2.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml [INFO] crate crates.io crate mqtt-visualizer 0.2.0 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded atomic-polyfill v0.1.2 [INFO] [stderr] Downloaded mqttrs v0.4.1 [INFO] [stderr] Downloaded nb v1.0.0 [INFO] [stderr] Downloaded volatile-register v0.2.0 [INFO] [stderr] Downloaded embedded-hal v0.2.5 [INFO] [stderr] Downloaded cortex-m v0.7.3 [INFO] [stderr] Downloaded heapless v0.7.3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 29e3a604a670b370660fcb0768f975b0a8c63e6262adc81e1d4397f12f1f90bd [INFO] running `Command { std: "docker" "start" "-a" "29e3a604a670b370660fcb0768f975b0a8c63e6262adc81e1d4397f12f1f90bd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "29e3a604a670b370660fcb0768f975b0a8c63e6262adc81e1d4397f12f1f90bd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "29e3a604a670b370660fcb0768f975b0a8c63e6262adc81e1d4397f12f1f90bd", kill_on_drop: false }` [INFO] [stdout] 29e3a604a670b370660fcb0768f975b0a8c63e6262adc81e1d4397f12f1f90bd [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] f0887b284d66b38ceda12571c3aab09271cc5546ce435b1a04e4d3ef03bd03be [INFO] running `Command { std: "docker" "start" "-a" "f0887b284d66b38ceda12571c3aab09271cc5546ce435b1a04e4d3ef03bd03be", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.27 [INFO] [stderr] Compiling unicode-xid v0.2.2 [INFO] [stderr] Compiling syn v1.0.73 [INFO] [stderr] Compiling serde_derive v1.0.126 [INFO] [stderr] Compiling heapless v0.7.3 [INFO] [stderr] Compiling serde v1.0.126 [INFO] [stderr] Checking byteorder v1.4.3 [INFO] [stderr] Checking stable_deref_trait v1.2.0 [INFO] [stderr] Checking bytes v1.0.1 [INFO] [stderr] Checking hex v0.4.3 [INFO] [stderr] Checking hash32 v0.2.1 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Checking mqttrs v0.4.1 [INFO] [stderr] Checking mqtt-visualizer v0.2.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: fields `dup`, `qospid`, `retain`, `topic_name`, and `payload` are never read [INFO] [stdout] --> src/lib.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 6 | struct Publish { [INFO] [stdout] | ------- fields in this struct [INFO] [stdout] 7 | dup: bool, [INFO] [stdout] | ^^^ [INFO] [stdout] 8 | qospid: mqttrs::QosPid, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] 9 | retain: bool, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] 10 | topic_name: String, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] 11 | payload: String [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Publish` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `dup`, `qospid`, `retain`, `topic_name`, and `payload` are never read [INFO] [stdout] --> src/lib.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 6 | struct Publish { [INFO] [stdout] | ------- fields in this struct [INFO] [stdout] 7 | dup: bool, [INFO] [stdout] | ^^^ [INFO] [stdout] 8 | qospid: mqttrs::QosPid, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] 9 | retain: bool, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] 10 | topic_name: String, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] 11 | payload: String [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Publish` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` 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` profile [unoptimized + debuginfo] target(s) in 11.92s [INFO] running `Command { std: "docker" "inspect" "f0887b284d66b38ceda12571c3aab09271cc5546ce435b1a04e4d3ef03bd03be", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f0887b284d66b38ceda12571c3aab09271cc5546ce435b1a04e4d3ef03bd03be", kill_on_drop: false }` [INFO] [stdout] f0887b284d66b38ceda12571c3aab09271cc5546ce435b1a04e4d3ef03bd03be [INFO] checking mqtt-visualizer-0.2.0 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never [INFO] extracting crate mqtt-visualizer 0.2.0 into /workspace/builds/worker-5-tc2/source [INFO] validating manifest of crates.io crate mqtt-visualizer 0.2.0 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate mqtt-visualizer 0.2.0 [INFO] finished tweaking crates.io crate mqtt-visualizer 0.2.0 [INFO] tweaked toml for crates.io crate mqtt-visualizer 0.2.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml [INFO] crate crates.io crate mqtt-visualizer 0.2.0 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 4384be3a30ae1e3161d15c83fb68052893d872ede853a36440cd05e5c2d66442 [INFO] running `Command { std: "docker" "start" "-a" "4384be3a30ae1e3161d15c83fb68052893d872ede853a36440cd05e5c2d66442", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "4384be3a30ae1e3161d15c83fb68052893d872ede853a36440cd05e5c2d66442", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4384be3a30ae1e3161d15c83fb68052893d872ede853a36440cd05e5c2d66442", kill_on_drop: false }` [INFO] [stdout] 4384be3a30ae1e3161d15c83fb68052893d872ede853a36440cd05e5c2d66442 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] aa404047f25788946b55e139c2da3e3ace1b5627a8de279c460400bf1c53602d [INFO] running `Command { std: "docker" "start" "-a" "aa404047f25788946b55e139c2da3e3ace1b5627a8de279c460400bf1c53602d", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.27 [INFO] [stderr] Compiling unicode-xid v0.2.2 [INFO] [stderr] Compiling syn v1.0.73 [INFO] [stderr] Compiling serde_derive v1.0.126 [INFO] [stderr] Checking byteorder v1.4.3 [INFO] [stderr] Compiling serde v1.0.126 [INFO] [stderr] Compiling heapless v0.7.3 [INFO] [stderr] Checking stable_deref_trait v1.2.0 [INFO] [stderr] Checking bytes v1.0.1 [INFO] [stderr] Checking hex v0.4.3 [INFO] [stderr] Checking hash32 v0.2.1 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Checking mqttrs v0.4.1 [INFO] [stderr] Checking mqtt-visualizer v0.2.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: fields `dup`, `qospid`, `retain`, `topic_name`, and `payload` are never read [INFO] [stdout] --> src/lib.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 6 | struct Publish { [INFO] [stdout] | ------- fields in this struct [INFO] [stdout] 7 | dup: bool, [INFO] [stdout] | ^^^ [INFO] [stdout] 8 | qospid: mqttrs::QosPid, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] 9 | retain: bool, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] 10 | topic_name: String, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] 11 | payload: String [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Publish` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `dup`, `qospid`, `retain`, `topic_name`, and `payload` are never read [INFO] [stdout] --> src/lib.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 6 | struct Publish { [INFO] [stdout] | ------- fields in this struct [INFO] [stdout] 7 | dup: bool, [INFO] [stdout] | ^^^ [INFO] [stdout] 8 | qospid: mqttrs::QosPid, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] 9 | retain: bool, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] 10 | topic_name: String, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] 11 | payload: String [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Publish` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` 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` profile [unoptimized + debuginfo] target(s) in 10.65s [INFO] running `Command { std: "docker" "inspect" "aa404047f25788946b55e139c2da3e3ace1b5627a8de279c460400bf1c53602d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "aa404047f25788946b55e139c2da3e3ace1b5627a8de279c460400bf1c53602d", kill_on_drop: false }` [INFO] [stdout] aa404047f25788946b55e139c2da3e3ace1b5627a8de279c460400bf1c53602d