Oct 12 18:59:08.752 INFO checking kingswanwho/Crawler against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 12 18:59:08.752 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-1/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-1/pr-54977/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/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 +4021bd0b3c5815b087d6db10ce461e7e4854ade7-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"`
Oct 12 18:59:09.197 INFO blam! 1ebacf70f97785c425492d12abd0cf9878956f9cc358d5ef5231beba5a4a191c
Oct 12 18:59:09.205 INFO running `"docker" "start" "-a" "1ebacf70f97785c425492d12abd0cf9878956f9cc358d5ef5231beba5a4a191c"`
Oct 12 18:59:09.784 INFO kablam! usermod: no changes
Oct 12 18:59:09.975 INFO kablam!    Compiling gcc v0.3.47
Oct 12 18:59:09.979 INFO kablam!    Compiling string_cache v0.2.29
Oct 12 18:59:09.979 INFO kablam!    Compiling html5ever v0.5.4
Oct 12 18:59:09.981 INFO kablam!     Checking tendril v0.2.4
Oct 12 18:59:09.985 INFO kablam!     Checking hyper v0.10.10
Oct 12 18:59:14.893 INFO kablam!    Compiling openssl-sys v0.9.12
Oct 12 18:59:14.893 INFO kablam!    Compiling backtrace-sys v0.1.11
Oct 12 18:59:20.036 INFO kablam!    Compiling openssl v0.9.12
Oct 12 18:59:28.171 INFO kablam!     Checking native-tls v0.1.2
Oct 12 18:59:29.956 INFO kablam!     Checking hyper-native-tls v0.2.2
Oct 12 18:59:33.204 INFO kablam!     Checking select v0.3.0
Oct 12 18:59:37.901 INFO kablam!     Checking backtrace v0.3.2
Oct 12 18:59:38.612 INFO kablam!     Checking error-chain v0.8.1
Oct 12 18:59:39.321 INFO kablam!     Checking bb v0.1.0 (/source)
Oct 12 18:59:41.428 INFO kablam! warning: function is never used: `sync_pop_url`
Oct 12 18:59:41.428 INFO kablam!   --> src/function.rs:25:1
Oct 12 18:59:41.428 INFO kablam!    |
Oct 12 18:59:41.428 INFO kablam! 25 | pub fn sync_pop_url(queue: &Arc<Mutex<VecDeque<Url>>>) -> Option<Url> {
Oct 12 18:59:41.428 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 18:59:41.428 INFO kablam!    |
Oct 12 18:59:41.428 INFO kablam!    = note: #[warn(dead_code)] on by default
Oct 12 18:59:41.428 INFO kablam! 
Oct 12 18:59:41.428 INFO kablam! warning: method is never used: `check_empty`
Oct 12 18:59:41.428 INFO kablam!   --> src/crawler.rs:58:2
Oct 12 18:59:41.428 INFO kablam!    |
Oct 12 18:59:41.428 INFO kablam! 58 |     pub fn check_empty(&self) -> bool {
Oct 12 18:59:41.428 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 18:59:41.428 INFO kablam! 
Oct 12 18:59:41.428 INFO kablam! warning: method is never used: `pop`
Oct 12 18:59:41.428 INFO kablam!   --> src/crawler.rs:63:2
Oct 12 18:59:41.428 INFO kablam!    |
Oct 12 18:59:41.428 INFO kablam! 63 |     pub fn pop(&self) -> Option<Url> {
Oct 12 18:59:41.428 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 18:59:41.428 INFO kablam! 
Oct 12 18:59:41.429 INFO kablam! warning: method is never used: `push`
Oct 12 18:59:41.429 INFO kablam!   --> src/crawler.rs:67:2
Oct 12 18:59:41.429 INFO kablam!    |
Oct 12 18:59:41.429 INFO kablam! 67 |     pub fn push(&self, url: Url) -> Result<()> {
Oct 12 18:59:41.429 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 18:59:41.429 INFO kablam! 
Oct 12 18:59:42.236 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 32.42s
Oct 12 18:59:42.256 INFO kablam! su: No module specific data is present
Oct 12 18:59:43.349 INFO running `"docker" "rm" "-f" "1ebacf70f97785c425492d12abd0cf9878956f9cc358d5ef5231beba5a4a191c"`
Oct 12 18:59:43.704 INFO blam! 1ebacf70f97785c425492d12abd0cf9878956f9cc358d5ef5231beba5a4a191c