Dec 12 11:14:28.538 INFO checking mqttc-0.1.4 against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 12 11:14:28.538 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-6/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +aa9aa79c3c583aab59ac9134542d60a780c35e2e-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 12 11:14:28.800 INFO [stdout] 33f15f02e20adaaacea1d239632579c95308c3d37332c822bccf3fad96b9e67b
Dec 12 11:14:28.808 INFO running `"docker" "start" "-a" "33f15f02e20adaaacea1d239632579c95308c3d37332c822bccf3fad96b9e67b"`
Dec 12 11:14:29.520 INFO [stderr] usermod: no changes
Dec 12 11:14:29.696 INFO [stderr]    Compiling openssl-sys v0.7.17
Dec 12 11:14:29.696 INFO [stderr]    Compiling openssl v0.7.14
Dec 12 11:14:29.698 INFO [stderr]     Checking mqtt3 v0.1.4
Dec 12 11:14:32.579 INFO [stderr]    Compiling openssl-sys-extras v0.7.14
Dec 12 11:14:35.949 INFO [stderr]     Checking netopt v0.1.3
Dec 12 11:14:36.962 INFO [stderr]     Checking mqttc v0.1.4 (/source)
Dec 12 11:14:38.285 INFO [stderr] warning: unused import: `std::io::Cursor`
Dec 12 11:14:38.285 INFO [stderr]    --> src/client.rs:718:9
Dec 12 11:14:38.285 INFO [stderr]     |
Dec 12 11:14:38.285 INFO [stderr] 718 |     use std::io::Cursor;
Dec 12 11:14:38.285 INFO [stderr]     |         ^^^^^^^^^^^^^^^
Dec 12 11:14:38.285 INFO [stderr]     |
Dec 12 11:14:38.285 INFO [stderr]     = note: #[warn(unused_imports)] on by default
Dec 12 11:14:38.285 INFO [stderr] 
Dec 12 11:14:38.539 INFO [stderr] warning: unused variable: `client`
Dec 12 11:14:38.539 INFO [stderr]    --> src/client.rs:730:13
Dec 12 11:14:38.540 INFO [stderr]     |
Dec 12 11:14:38.540 INFO [stderr] 730 |         let client = options.connect("127.0.0.1:1883", netopt).unwrap();
Dec 12 11:14:38.540 INFO [stderr]     |             ^^^^^^ help: consider using `_client` instead
Dec 12 11:14:38.540 INFO [stderr]     |
Dec 12 11:14:38.540 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 12 11:14:38.540 INFO [stderr] 
Dec 12 11:14:41.851 INFO [stderr] warning: unused `#[macro_use]` import
Dec 12 11:14:41.851 INFO [stderr]  --> examples/sub.rs:3:1
Dec 12 11:14:41.851 INFO [stderr]   |
Dec 12 11:14:41.851 INFO [stderr] 3 | #[macro_use] extern crate log;
Dec 12 11:14:41.851 INFO [stderr]   | ^^^^^^^^^^^^
Dec 12 11:14:41.851 INFO [stderr]   |
Dec 12 11:14:41.852 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 11:14:41.852 INFO [stderr] 
Dec 12 11:14:41.852 INFO [stderr] warning: unused imports: `Client`, `PubOpt`
Dec 12 11:14:41.852 INFO [stderr]   --> examples/sub.rs:10:21
Dec 12 11:14:41.852 INFO [stderr]    |
Dec 12 11:14:41.852 INFO [stderr] 10 | use mqttc::{PubSub, Client, ClientOptions, ReconnectMethod, PubOpt};
Dec 12 11:14:41.852 INFO [stderr]    |                     ^^^^^^                                  ^^^^^^
Dec 12 11:14:41.852 INFO [stderr] 
Dec 12 11:14:41.856 INFO [stderr] warning: unused import: `Client`
Dec 12 11:14:41.856 INFO [stderr]   --> examples/ping.rs:10:13
Dec 12 11:14:41.857 INFO [stderr]    |
Dec 12 11:14:41.857 INFO [stderr] 10 | use mqttc::{Client, ClientOptions, ReconnectMethod};
Dec 12 11:14:41.857 INFO [stderr]    |             ^^^^^^
Dec 12 11:14:41.857 INFO [stderr]    |
Dec 12 11:14:41.857 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 12 11:14:41.857 INFO [stderr] 
Dec 12 11:14:41.940 INFO [stderr] warning: variable does not need to be mutable
Dec 12 11:14:41.941 INFO [stderr]   --> examples/ping.rs:14:9
Dec 12 11:14:41.942 INFO [stderr]    |
Dec 12 11:14:41.942 INFO [stderr] 14 |     let mut args: Vec<_> = env::args().collect();
Dec 12 11:14:41.942 INFO [stderr]    |         ----^^^^
Dec 12 11:14:41.942 INFO [stderr]    |         |
Dec 12 11:14:41.942 INFO [stderr]    |         help: remove this `mut`
Dec 12 11:14:41.942 INFO [stderr] warning: variable does not need to be mutable
Dec 12 11:14:41.942 INFO [stderr]   --> examples/sub.rs:14:9
Dec 12 11:14:41.948 INFO [stderr]    |
Dec 12 11:14:41.948 INFO [stderr] 14 |     let mut args: Vec<_> = env::args().collect();
Dec 12 11:14:41.948 INFO [stderr]    |         ----^^^^
Dec 12 11:14:41.948 INFO [stderr]    |         |
Dec 12 11:14:41.948 INFO [stderr]    |         help: remove this `mut`
Dec 12 11:14:41.948 INFO [stderr]    |
Dec 12 11:14:41.948 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 11:14:41.948 INFO [stderr] 
Dec 12 11:14:41.948 INFO [stderr]    |
Dec 12 11:14:41.948 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 11:14:41.948 INFO [stderr] 
Dec 12 11:14:42.110 INFO [stderr] warning: unused `#[macro_use]` import
Dec 12 11:14:42.110 INFO [stderr]  --> examples/pub.rs:3:1
Dec 12 11:14:42.110 INFO [stderr]   |
Dec 12 11:14:42.110 INFO [stderr] 3 | #[macro_use] extern crate log;
Dec 12 11:14:42.110 INFO [stderr]   | ^^^^^^^^^^^^
Dec 12 11:14:42.110 INFO [stderr]   |
Dec 12 11:14:42.110 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 11:14:42.110 INFO [stderr] 
Dec 12 11:14:42.110 INFO [stderr] warning: unused import: `Client`
Dec 12 11:14:42.110 INFO [stderr]   --> examples/pub.rs:10:21
Dec 12 11:14:42.110 INFO [stderr]    |
Dec 12 11:14:42.110 INFO [stderr] 10 | use mqttc::{PubSub, Client, ClientOptions, ReconnectMethod, PubOpt};
Dec 12 11:14:42.110 INFO [stderr]    |                     ^^^^^^
Dec 12 11:14:42.110 INFO [stderr] 
Dec 12 11:14:42.143 INFO [stderr] warning: variable does not need to be mutable
Dec 12 11:14:42.143 INFO [stderr]   --> examples/pub.rs:14:9
Dec 12 11:14:42.143 INFO [stderr]    |
Dec 12 11:14:42.143 INFO [stderr] 14 |     let mut args: Vec<_> = env::args().collect();
Dec 12 11:14:42.143 INFO [stderr]    |         ----^^^^
Dec 12 11:14:42.143 INFO [stderr]    |         |
Dec 12 11:14:42.143 INFO [stderr]    |         help: remove this `mut`
Dec 12 11:14:42.143 INFO [stderr]    |
Dec 12 11:14:42.143 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 11:14:42.143 INFO [stderr] 
Dec 12 11:14:42.161 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.62s
Dec 12 11:14:42.167 INFO [stderr] su: No module specific data is present
Dec 12 11:14:42.416 INFO running `"docker" "inspect" "33f15f02e20adaaacea1d239632579c95308c3d37332c822bccf3fad96b9e67b"`
Dec 12 11:14:42.547 INFO running `"docker" "rm" "-f" "33f15f02e20adaaacea1d239632579c95308c3d37332c822bccf3fad96b9e67b"`
Dec 12 11:14:42.683 INFO [stdout] 33f15f02e20adaaacea1d239632579c95308c3d37332c822bccf3fad96b9e67b