[INFO] cloning repository https://github.com/mstampfer/coin-crab
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mstampfer/coin-crab" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmstampfer%2Fcoin-crab", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmstampfer%2Fcoin-crab'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fe7d87299f480e68f75e99f4a245547414403546
[INFO] checking mstampfer/coin-crab against try#b946edaa85de45f124065f52b1bc55ba2fb4f9fb for pr-157562
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmstampfer%2Fcoin-crab" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mstampfer/coin-crab
[INFO] finished tweaking git repo https://github.com/mstampfer/coin-crab
[INFO] tweaked toml for git repo https://github.com/mstampfer/coin-crab written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mstampfer/coin-crab on toolchain b946edaa85de45f124065f52b1bc55ba2fb4f9fb
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b946edaa85de45f124065f52b1bc55ba2fb4f9fb" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mstampfer/coin-crab 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" "+b946edaa85de45f124065f52b1bc55ba2fb4f9fb" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3e793bdf10248eb2ddbd6b0faebed8155c11b4589982e2893733958d93e8d540" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 87dcfde8c8aeabc3ede0caec3c99e164529599edb84d7dbbbe93c2c165f06884
[INFO] running `Command { std: "docker" "start" "87dcfde8c8aeabc3ede0caec3c99e164529599edb84d7dbbbe93c2c165f06884", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "87dcfde8c8aeabc3ede0caec3c99e164529599edb84d7dbbbe93c2c165f06884" "/opt/rustwide/cargo-home/bin/cargo" "+b946edaa85de45f124065f52b1bc55ba2fb4f9fb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "87dcfde8c8aeabc3ede0caec3c99e164529599edb84d7dbbbe93c2c165f06884", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "87dcfde8c8aeabc3ede0caec3c99e164529599edb84d7dbbbe93c2c165f06884" "/opt/rustwide/cargo-home/bin/cargo" "+b946edaa85de45f124065f52b1bc55ba2fb4f9fb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] [stderr]     Checking rust_ios_lib v0.1.0 (/opt/rustwide/workdir/crates/ios_lib)
[INFO] [stdout] warning: field `runtime` is never read
[INFO] [stdout]   --> crates/ios_lib/src/mqtt/client.rs:18:16
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct MQTTClient {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] 17 |     pub(crate) client: Arc<AsyncClient>,
[INFO] [stdout] 18 |     pub(crate) runtime: Arc<Runtime>,
[INFO] [stdout]    |                ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find type `c_void` in this scope
[INFO] [stdout]    --> crates/ios_lib/src/ffi.rs:360:52
[INFO] [stdout]     |
[INFO] [stdout] 360 |         extern "C" fn dummy_callback(_data: *const c_void) {
[INFO] [stdout]     |                                                    ^^^^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout]     = note: type alias `crate::mqtt::client::tests::c_void` exists but is inaccessible
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]     |
[INFO] [stdout] 237 +     use std::ffi::c_void;
[INFO] [stdout]     |
[INFO] [stdout] 237 +     use std::os::raw::c_void;
[INFO] [stdout]     |
[INFO] [stdout] 237 +     use core::ffi::c_void;
[INFO] [stdout]     |
[INFO] [stdout] 237 +     use libc::c_void;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::Mutex`
[INFO] [stdout]   --> crates/ios_lib/src/globals.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     use std::sync::Mutex;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `CStr`
[INFO] [stdout]   --> crates/ios_lib/src/lib.rs:85:24
[INFO] [stdout]    |
[INFO] [stdout] 85 |         use std::ffi::{CStr, CString};
[INFO] [stdout]    |                        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::os::raw::c_char`
[INFO] [stdout]   --> crates/ios_lib/src/lib.rs:86:13
[INFO] [stdout]    |
[INFO] [stdout] 86 |         use std::os::raw::c_char;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> crates/ios_lib/src/ffi.rs:247:9
[INFO] [stdout]     |
[INFO] [stdout] 247 |         unsafe { free_string(raw_ptr) };
[INFO] [stdout]     |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_unsafe)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> crates/ios_lib/src/ffi.rs:256:9
[INFO] [stdout]     |
[INFO] [stdout] 256 |         unsafe { free_string(std::ptr::null_mut()) };
[INFO] [stdout]     |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> crates/ios_lib/src/ffi.rs:277:9
[INFO] [stdout]     |
[INFO] [stdout] 277 |         unsafe { free_string(error_ptr) };
[INFO] [stdout]     |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> crates/ios_lib/src/ffi.rs:296:9
[INFO] [stdout]     |
[INFO] [stdout] 296 |         unsafe { free_string(error_ptr) };
[INFO] [stdout]     |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> crates/ios_lib/src/ffi.rs:417:13
[INFO] [stdout]     |
[INFO] [stdout] 417 |             unsafe { free_string(error_ptr) };
[INFO] [stdout]     |             ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> crates/ios_lib/src/ffi.rs:440:13
[INFO] [stdout]     |
[INFO] [stdout] 440 |             unsafe { free_string(raw_ptr) };
[INFO] [stdout]     |             ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> crates/ios_lib/src/lib.rs:93:9
[INFO] [stdout]    |
[INFO] [stdout] 93 |         unsafe { free_string(raw_ptr) };
[INFO] [stdout]    |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_ios_lib` (lib test) due to 1 previous error; 10 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "87dcfde8c8aeabc3ede0caec3c99e164529599edb84d7dbbbe93c2c165f06884", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87dcfde8c8aeabc3ede0caec3c99e164529599edb84d7dbbbe93c2c165f06884", kill_on_drop: false }`
[INFO] [stdout] 87dcfde8c8aeabc3ede0caec3c99e164529599edb84d7dbbbe93c2c165f06884
