[INFO] updating cached repository pbzweihander/ircbot-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/pbzweihander/ircbot-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/pbzweihander/ircbot-rs" "work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/pbzweihander/ircbot-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/pbzweihander/ircbot-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/pbzweihander/ircbot-rs" "work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/pbzweihander/ircbot-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/pbzweihander/ircbot-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e34898d2fbd2b8e007b45a288838581d335dc541
[INFO] sha for GitHub repo pbzweihander/ircbot-rs: e34898d2fbd2b8e007b45a288838581d335dc541
[INFO] validating manifest of pbzweihander/ircbot-rs on toolchain master#435236b8877cdb98c82eaebfb7887782277265c5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of pbzweihander/ircbot-rs on toolchain try#b5c7f157c20453dde8d47371abe73b32351b4e7f
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing pbzweihander/ircbot-rs
[INFO] finished frobbing pbzweihander/ircbot-rs
[INFO] frobbed toml for pbzweihander/ircbot-rs written to work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/pbzweihander/ircbot-rs/Cargo.toml
[INFO] started frobbing pbzweihander/ircbot-rs
[INFO] finished frobbing pbzweihander/ircbot-rs
[INFO] frobbed toml for pbzweihander/ircbot-rs written to work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/pbzweihander/ircbot-rs/Cargo.toml
[INFO] crate pbzweihander/ircbot-rs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking pbzweihander/ircbot-rs against try#b5c7f157c20453dde8d47371abe73b32351b4e7f for pr-62849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-1/try#b5c7f157c20453dde8d47371abe73b32351b4e7f:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/pbzweihander/ircbot-rs:/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" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] d90d01dba0ce44497c00a9d44da4e6ddb5f5d846c33d0dcd529a5ce93555a507
[INFO] running `"docker" "start" "-a" "d90d01dba0ce44497c00a9d44da4e6ddb5f5d846c33d0dcd529a5ce93555a507"`
[INFO] [stderr]    Compiling syn v0.15.29
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]     Checking tokio-timer v0.1.2
[INFO] [stderr]     Checking crossbeam-epoch v0.7.1
[INFO] [stderr]     Checking mio v0.6.16
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]     Checking miniz_oxide_c_api v0.2.1
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]     Checking openssl-sys v0.9.43
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking tokio-mockstream v1.1.0
[INFO] [stderr]     Checking h2 v0.1.17
[INFO] [stderr]    Compiling string_cache_codegen v0.4.2
[INFO] [stderr]     Checking flate2 v1.0.7
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]    Compiling selectors v0.20.0
[INFO] [stderr]     Checking tokio-reactor v0.1.9
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking openssl v0.10.20
[INFO] [stderr]     Checking tokio-threadpool v0.1.13
[INFO] [stderr]     Checking backtrace v0.3.14
[INFO] [stderr]     Checking tokio-uds v0.2.5
[INFO] [stderr]     Checking tokio-udp v0.1.3
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]    Compiling string_cache v0.7.3
[INFO] [stderr]     Checking tokio-fs v0.1.6
[INFO] [stderr]     Checking tokio v0.1.18
[INFO] [stderr]     Checking hyper v0.12.25
[INFO] [stderr]     Checking tokio-core v0.1.17
[INFO] [stderr]     Checking native-tls v0.2.2
[INFO] [stderr]     Checking tokio-tls v0.2.1
[INFO] [stderr]    Compiling cssparser v0.24.1
[INFO] [stderr]     Checking hyper-tls v0.3.2
[INFO] [stderr]     Checking reqwest v0.9.13
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling serde_derive v1.0.89
[INFO] [stderr]    Compiling cssparser-macros v0.3.5
[INFO] [stderr]    Compiling html5ever v0.22.5
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr] warning[E0506]: cannot assign to `self.input.cached_token` because it is borrowed
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/cssparser-0.24.1/src/parser.rs:572:17
[INFO] [stderr]     |
[INFO] [stderr] 547 |     pub fn next_including_whitespace_and_comments(&mut self) -> Result<&Token<'i>, BasicParseError<'i>> {
[INFO] [stderr]     |                                                   - let's call the lifetime of this reference `'1`
[INFO] [stderr] ...
[INFO] [stderr] 560 |             Some(ref cached_token)
[INFO] [stderr]     |                  ---------------- borrow of `self.input.cached_token` occurs here
[INFO] [stderr] ...
[INFO] [stderr] 572 |                 self.input.cached_token = Some(CachedToken {
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^ assignment to borrowed `self.input.cached_token` occurs here
[INFO] [stderr] ...
[INFO] [stderr] 584 |         Ok(token)
[INFO] [stderr]     |         --------- returning this value requires that `self.input.cached_token.0` is borrowed for `'1`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]     = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr]     = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr]    Compiling markup5ever v0.7.5
[INFO] [stderr]     Checking daummap v0.2.2
[INFO] [stderr]     Checking irc v0.13.6
[INFO] [stderr]     Checking scraper v0.9.2
[INFO] [stderr]     Checking daumdic v0.6.1
[INFO] [stderr]     Checking airkorea v0.4.0
[INFO] [stderr]     Checking howto v0.2.1
[INFO] [stderr]     Checking backslash-z v0.2.0
[INFO] [stderr]     Checking ircbot v0.6.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 34s
[INFO] running `"docker" "inspect" "d90d01dba0ce44497c00a9d44da4e6ddb5f5d846c33d0dcd529a5ce93555a507"`
[INFO] running `"docker" "rm" "-f" "d90d01dba0ce44497c00a9d44da4e6ddb5f5d846c33d0dcd529a5ce93555a507"`
[INFO] [stdout] d90d01dba0ce44497c00a9d44da4e6ddb5f5d846c33d0dcd529a5ce93555a507