[INFO] updating cached repository kingswanwho/Crawler
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/kingswanwho/Crawler
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/kingswanwho/Crawler" "work/ex/pr-58592/sources/master#f66e4697ae286985ddefc53c3a047614568458bb/gh/kingswanwho/Crawler"`
[INFO] [stderr] Cloning into 'work/ex/pr-58592/sources/master#f66e4697ae286985ddefc53c3a047614568458bb/gh/kingswanwho/Crawler'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/kingswanwho/Crawler" "work/ex/pr-58592/sources/try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a/gh/kingswanwho/Crawler"`
[INFO] [stderr] Cloning into 'work/ex/pr-58592/sources/try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a/gh/kingswanwho/Crawler'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] fbeb2dde9fce41dfa159fb97e898142a99fd7816
[INFO] sha for GitHub repo kingswanwho/Crawler: fbeb2dde9fce41dfa159fb97e898142a99fd7816
[INFO] validating manifest of kingswanwho/Crawler on toolchain master#f66e4697ae286985ddefc53c3a047614568458bb
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+f66e4697ae286985ddefc53c3a047614568458bb-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of kingswanwho/Crawler on toolchain try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c3b22200e6f5b70eb1f99ae6944d989ae17a458a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing kingswanwho/Crawler
[INFO] finished frobbing kingswanwho/Crawler
[INFO] frobbed toml for kingswanwho/Crawler written to work/ex/pr-58592/sources/master#f66e4697ae286985ddefc53c3a047614568458bb/gh/kingswanwho/Crawler/Cargo.toml
[INFO] started frobbing kingswanwho/Crawler
[INFO] finished frobbing kingswanwho/Crawler
[INFO] frobbed toml for kingswanwho/Crawler written to work/ex/pr-58592/sources/try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a/gh/kingswanwho/Crawler/Cargo.toml
[INFO] crate kingswanwho/Crawler has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+f66e4697ae286985ddefc53c3a047614568458bb-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c3b22200e6f5b70eb1f99ae6944d989ae17a458a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking kingswanwho/Crawler against try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a for pr-58592
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58592/worker-3/try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58592/sources/try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a/gh/kingswanwho/Crawler:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+c3b22200e6f5b70eb1f99ae6944d989ae17a458a-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] f612dda3817aee36b4ec216a9e58ec132912e7d305fe476b7bfb608acf691af7
[INFO] running `"docker" "start" "-a" "f612dda3817aee36b4ec216a9e58ec132912e7d305fe476b7bfb608acf691af7"`
[INFO] [stderr]     Checking bb v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/error.rs:5:1
[INFO] [stderr]    |
[INFO] [stderr] 5  | / error_chain!{
[INFO] [stderr] 6  | |     foreign_links {
[INFO] [stderr] 7  | |         Io(::std::io::Error);
[INFO] [stderr] 8  | |         Hyper(::hyper::Error);
[INFO] [stderr] ...  |
[INFO] [stderr] 21 | |     }
[INFO] [stderr] 22 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(deprecated)] on by default
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/error.rs:5:1
[INFO] [stderr]    |
[INFO] [stderr] 5  | / error_chain!{
[INFO] [stderr] 6  | |     foreign_links {
[INFO] [stderr] 7  | |         Io(::std::io::Error);
[INFO] [stderr] 8  | |         Hyper(::hyper::Error);
[INFO] [stderr] ...  |
[INFO] [stderr] 21 | |     }
[INFO] [stderr] 22 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/error.rs:5:1
[INFO] [stderr]    |
[INFO] [stderr] 5  | / error_chain!{
[INFO] [stderr] 6  | |     foreign_links {
[INFO] [stderr] 7  | |         Io(::std::io::Error);
[INFO] [stderr] 8  | |         Hyper(::hyper::Error);
[INFO] [stderr] ...  |
[INFO] [stderr] 21 | |     }
[INFO] [stderr] 22 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(deprecated)] on by default
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/error.rs:5:1
[INFO] [stderr]    |
[INFO] [stderr] 5  | / error_chain!{
[INFO] [stderr] 6  | |     foreign_links {
[INFO] [stderr] 7  | |         Io(::std::io::Error);
[INFO] [stderr] 8  | |         Hyper(::hyper::Error);
[INFO] [stderr] ...  |
[INFO] [stderr] 21 | |     }
[INFO] [stderr] 22 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sync_pop_url`
[INFO] [stderr]   --> src/function.rs:25:1
[INFO] [stderr]    |
[INFO] [stderr] 25 | pub fn sync_pop_url(queue: &Arc<Mutex<VecDeque<Url>>>) -> Option<Url> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `check_empty`
[INFO] [stderr]   --> src/crawler.rs:58:2
[INFO] [stderr]    |
[INFO] [stderr] 58 |     pub fn check_empty(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `pop`
[INFO] [stderr]   --> src/crawler.rs:63:2
[INFO] [stderr]    |
[INFO] [stderr] 63 |     pub fn pop(&self) -> Option<Url> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `push`
[INFO] [stderr]   --> src/crawler.rs:67:2
[INFO] [stderr]    |
[INFO] [stderr] 67 |     pub fn push(&self, url: Url) -> Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.47s
[INFO] running `"docker" "inspect" "f612dda3817aee36b4ec216a9e58ec132912e7d305fe476b7bfb608acf691af7"`
[INFO] running `"docker" "rm" "-f" "f612dda3817aee36b4ec216a9e58ec132912e7d305fe476b7bfb608acf691af7"`
[INFO] [stdout] f612dda3817aee36b4ec216a9e58ec132912e7d305fe476b7bfb608acf691af7