[INFO] cloning repository yagince/slacky-rs
[INFO] running `"git" "clone" "--bare" "git://github.com/yagince/slacky-rs.git" "work/cache/sources/gh/yagince/slacky-rs"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/yagince/slacky-rs'...
[INFO] running `"git" "clone" "work/cache/sources/gh/yagince/slacky-rs" "work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/yagince/slacky-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/yagince/slacky-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/yagince/slacky-rs" "work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/yagince/slacky-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/yagince/slacky-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b380fbc58fbfefe3026f44739c77f6f7a0719263
[INFO] sha for GitHub repo yagince/slacky-rs: b380fbc58fbfefe3026f44739c77f6f7a0719263
[INFO] validating manifest of yagince/slacky-rs on toolchain master#c8865d8e195813ade6b84434ac9f8850e7112d1a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of yagince/slacky-rs on toolchain try#e212b7d492c96d3837691ba29d32d5f468933fb8
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing yagince/slacky-rs
[INFO] finished frobbing yagince/slacky-rs
[INFO] frobbed toml for yagince/slacky-rs written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/yagince/slacky-rs/Cargo.toml
[INFO] started frobbing yagince/slacky-rs
[INFO] finished frobbing yagince/slacky-rs
[INFO] frobbed toml for yagince/slacky-rs written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/yagince/slacky-rs/Cargo.toml
[INFO] crate yagince/slacky-rs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_derive v1.0.68
[INFO] [stderr]   Downloaded serde v1.0.68
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing yagince/slacky-rs against try#e212b7d492c96d3837691ba29d32d5f468933fb8 for pr-61629
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-1/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/yagince/slacky-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" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "build" "--frozen"`
[INFO] [stdout] 804e7937172e87cdea945a2cc4b7893aca030a85e6b07a04acc0fd606c4c9cd1
[INFO] running `"docker" "start" "-a" "804e7937172e87cdea945a2cc4b7893aca030a85e6b07a04acc0fd606c4c9cd1"`
[INFO] [stderr]    Compiling serde v1.0.68
[INFO] [stderr]    Compiling num-traits v0.2.5
[INFO] [stderr]    Compiling hex v0.2.0
[INFO] [stderr]    Compiling log v0.4.2
[INFO] [stderr]    Compiling tokio-service v0.1.0
[INFO] [stderr]    Compiling relay v0.1.1
[INFO] [stderr]    Compiling openssl-sys v0.9.33
[INFO] [stderr]    Compiling textwrap v0.9.0
[INFO] [stderr]    Compiling url v1.7.0
[INFO] [stderr]    Compiling libflate v0.1.15
[INFO] [stderr]    Compiling serde_derive v1.0.68
[INFO] [stderr]    Compiling error-chain v0.11.0
[INFO] [stderr]    Compiling mio v0.6.14
[INFO] [stderr]    Compiling tokio-io v0.1.7
[INFO] [stderr]    Compiling tokio-threadpool v0.1.4
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr] warning[E0713]: borrow may still be in use when destructor runs
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/url-1.7.0/src/form_urlencoded.rs:261:40
[INFO] [stderr]     |
[INFO] [stderr] 259 | impl<'a> Target for ::UrlQuery<'a> {
[INFO] [stderr]     |      -- lifetime `'a` defined here
[INFO] [stderr] 260 |     fn as_mut_string(&mut self) -> &mut String { &mut self.url.serialization }
[INFO] [stderr] 261 |     fn finish(self) -> &'a mut ::Url { self.url }
[INFO] [stderr]     |                                        ^^^^^^^^ - here, drop of `self` needs exclusive access to `*self.url`, because the type `UrlQuery<'_>` implements the `Drop` trait
[INFO] [stderr]     |                                        |
[INFO] [stderr]     |                                        returning this value requires that `*self.url` is borrowed for `'a`
[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 want v0.0.4
[INFO] [stderr]    Compiling clap v2.31.2
[INFO] [stderr]    Compiling tokio-codec v0.1.0
[INFO] [stderr]    Compiling openssl v0.9.24
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling tokio-reactor v0.1.2
[INFO] [stderr]    Compiling tokio-fs v0.1.1
[INFO] [stderr]    Compiling chrono v0.4.4
[INFO] [stderr]    Compiling tokio-tcp v0.1.0
[INFO] [stderr]    Compiling tokio-udp v0.1.1
[INFO] [stderr]    Compiling tokio v0.1.7
[INFO] [stderr]    Compiling tokio-core v0.1.17
[INFO] [stderr]    Compiling tokio-proto v0.1.1
[INFO] [stderr]    Compiling native-tls v0.1.5
[INFO] [stderr]    Compiling hyper v0.11.27
[INFO] [stderr]    Compiling tokio-tls v0.1.4
[INFO] [stderr]    Compiling serde_urlencoded v0.5.2
[INFO] [stderr]    Compiling serde_json v1.0.22
[INFO] [stderr]    Compiling url_serde v0.2.0
[INFO] [stderr]    Compiling toml v0.4.6
[INFO] [stderr]    Compiling hyper-tls v0.1.3
[INFO] [stderr]    Compiling reqwest v0.7.3
[INFO] [stderr]    Compiling slack-hook v0.6.0
[INFO] [stderr]    Compiling slacky v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] error[E0283]: type annotations required: cannot resolve `std::string::String: std::convert::AsRef<_>`
[INFO] [stderr]   --> src/slack.rs:30:33
[INFO] [stderr]    |
[INFO] [stderr] 30 |         .channel(config.channel.as_ref())
[INFO] [stderr]    |                                 ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0283`.
[INFO] [stderr] error: Could not compile `slacky`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "804e7937172e87cdea945a2cc4b7893aca030a85e6b07a04acc0fd606c4c9cd1"`
[INFO] running `"docker" "rm" "-f" "804e7937172e87cdea945a2cc4b7893aca030a85e6b07a04acc0fd606c4c9cd1"`
[INFO] [stdout] 804e7937172e87cdea945a2cc4b7893aca030a85e6b07a04acc0fd606c4c9cd1