[INFO] cloning repository https://github.com/hyphent/mqtt-client [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hyphent/mqtt-client" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhyphent%2Fmqtt-client", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhyphent%2Fmqtt-client'... [INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhyphent%2Fmqtt-client/objects/info: No space left on device [WARN] Retrying crate fetch in 3 seconds (attempt 1) [INFO] cloning repository https://github.com/hyphent/mqtt-client [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hyphent/mqtt-client" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhyphent%2Fmqtt-client", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhyphent%2Fmqtt-client'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] c77c2edec25ccb6603f9212db30fd2f9e97b77c2 [INFO] checking hyphent/mqtt-client against try#b32fc44666c052e7cf07ab471bfb6f9ec571902f for pr-138676 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhyphent%2Fmqtt-client" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/hyphent/mqtt-client on toolchain b32fc44666c052e7cf07ab471bfb6f9ec571902f [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b32fc44666c052e7cf07ab471bfb6f9ec571902f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/hyphent/mqtt-client [INFO] finished tweaking git repo https://github.com/hyphent/mqtt-client [INFO] tweaked toml for git repo https://github.com/hyphent/mqtt-client written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/hyphent/mqtt-client 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" "+b32fc44666c052e7cf07ab471bfb6f9ec571902f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+b32fc44666c052e7cf07ab471bfb6f9ec571902f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 3898a7696f9f95c8edb258e209ba832b078626b12bbc4b7f3752dd398ff2a6a2 [INFO] running `Command { std: "docker" "start" "-a" "3898a7696f9f95c8edb258e209ba832b078626b12bbc4b7f3752dd398ff2a6a2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "3898a7696f9f95c8edb258e209ba832b078626b12bbc4b7f3752dd398ff2a6a2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3898a7696f9f95c8edb258e209ba832b078626b12bbc4b7f3752dd398ff2a6a2", kill_on_drop: false }` [INFO] [stdout] 3898a7696f9f95c8edb258e209ba832b078626b12bbc4b7f3752dd398ff2a6a2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+b32fc44666c052e7cf07ab471bfb6f9ec571902f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 2ccab6338d8f1f83a0831de96d5df3efaed8540e8af8113a7a0fdbd5ce04320c [INFO] running `Command { std: "docker" "start" "-a" "2ccab6338d8f1f83a0831de96d5df3efaed8540e8af8113a7a0fdbd5ce04320c", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.83 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Compiling proc-macro2 v1.0.24 [INFO] [stderr] Compiling unicode-xid v0.2.1 [INFO] [stderr] Compiling syn v1.0.60 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Checking smallvec v1.6.1 [INFO] [stderr] Compiling getrandom v0.2.2 [INFO] [stderr] Checking scopeguard v1.1.0 [INFO] [stderr] Compiling memchr v2.3.4 [INFO] [stderr] Checking once_cell v1.5.2 [INFO] [stderr] Checking futures-core v0.3.12 [INFO] [stderr] Checking pin-project-lite v0.2.4 [INFO] [stderr] Compiling proc-macro-hack v0.5.19 [INFO] [stderr] Checking bytes v1.0.1 [INFO] [stderr] Checking instant v0.1.9 [INFO] [stderr] Checking lock_api v0.4.2 [INFO] [stderr] Compiling proc-macro-nested v0.1.7 [INFO] [stderr] Checking futures-sink v0.3.12 [INFO] [stderr] Checking ppv-lite86 v0.2.10 [INFO] [stderr] Checking unicode-width v0.1.8 [INFO] [stderr] Checking pin-utils v0.1.0 [INFO] [stderr] Checking futures-task v0.3.12 [INFO] [stderr] Checking slab v0.4.2 [INFO] [stderr] Checking getopts v0.2.21 [INFO] [stderr] Compiling tokio v1.1.0 [INFO] [stderr] Compiling quote v1.0.8 [INFO] [stderr] Checking parking_lot_core v0.8.2 [INFO] [stderr] Checking mio v0.7.7 [INFO] [stderr] Checking num_cpus v1.13.0 [INFO] [stderr] Checking signal-hook-registry v1.3.0 [INFO] [stderr] Checking parking_lot v0.11.1 [INFO] [stderr] Checking rand_core v0.6.1 [INFO] [stderr] Checking uuid v0.8.2 [INFO] [stderr] Checking rand_chacha v0.3.0 [INFO] [stderr] Checking rand v0.8.3 [INFO] [stderr] Compiling tokio-macros v1.0.0 [INFO] [stderr] Compiling async-stream-impl v0.3.0 [INFO] [stderr] Compiling futures-macro v0.3.12 [INFO] [stderr] Checking async-stream v0.3.0 [INFO] [stderr] Checking futures-util v0.3.12 [INFO] [stderr] Checking tokio-stream v0.1.2 [INFO] [stderr] Checking tokio-util v0.6.2 [INFO] [stderr] Checking mqtt-codec v0.1.0 (https://github.com/hyphent/mqtt-codec?tag=v0.1.1#2c40d1a4) [INFO] [stderr] Checking mqtt-client v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/error.rs:12:11 [INFO] [stdout] | [INFO] [stdout] 12 | IoError(IoError), [INFO] [stdout] | ------- ^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `MQTTClientError` 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] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 12 - IoError(IoError), [INFO] [stdout] 12 + IoError(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/error.rs:13:15 [INFO] [stdout] | [INFO] [stdout] 13 | EncodeError(EncodeError), [INFO] [stdout] | ----------- ^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `MQTTClientError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 13 - EncodeError(EncodeError), [INFO] [stdout] 13 + EncodeError(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/error.rs:14:15 [INFO] [stdout] | [INFO] [stdout] 14 | DecodeError(DecodeError) [INFO] [stdout] | ----------- ^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `MQTTClientError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 14 - DecodeError(DecodeError) [INFO] [stdout] 14 + DecodeError(()) [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> src/main.rs:36:24 [INFO] [stdout] | [INFO] [stdout] 36 | Err(f) => { panic!(f.to_string()) } [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(non_fmt_panics)]` on by default [INFO] [stdout] help: add a "{}" format string to `Display` the message [INFO] [stdout] | [INFO] [stdout] 36 | Err(f) => { panic!("{}", f.to_string()) } [INFO] [stdout] | +++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/error.rs:12:11 [INFO] [stdout] | [INFO] [stdout] 12 | IoError(IoError), [INFO] [stdout] | ------- ^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `MQTTClientError` 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] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 12 - IoError(IoError), [INFO] [stdout] 12 + IoError(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/error.rs:13:15 [INFO] [stdout] | [INFO] [stdout] 13 | EncodeError(EncodeError), [INFO] [stdout] | ----------- ^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `MQTTClientError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 13 - EncodeError(EncodeError), [INFO] [stdout] 13 + EncodeError(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/error.rs:14:15 [INFO] [stdout] | [INFO] [stdout] 14 | DecodeError(DecodeError) [INFO] [stdout] | ----------- ^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `MQTTClientError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 14 - DecodeError(DecodeError) [INFO] [stdout] 14 + DecodeError(()) [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> src/main.rs:36:24 [INFO] [stdout] | [INFO] [stdout] 36 | Err(f) => { panic!(f.to_string()) } [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(non_fmt_panics)]` on by default [INFO] [stdout] help: add a "{}" format string to `Display` the message [INFO] [stdout] | [INFO] [stdout] 36 | Err(f) => { panic!("{}", f.to_string()) } [INFO] [stdout] | +++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.85s [INFO] running `Command { std: "docker" "inspect" "2ccab6338d8f1f83a0831de96d5df3efaed8540e8af8113a7a0fdbd5ce04320c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2ccab6338d8f1f83a0831de96d5df3efaed8540e8af8113a7a0fdbd5ce04320c", kill_on_drop: false }` [INFO] [stdout] 2ccab6338d8f1f83a0831de96d5df3efaed8540e8af8113a7a0fdbd5ce04320c