[INFO] updating cached repository walfie/petronel
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/walfie/petronel
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/walfie/petronel" "work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/walfie/petronel"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/walfie/petronel'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/walfie/petronel" "work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/walfie/petronel"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/walfie/petronel'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] cd40352b845a095fef7a3836b5e7c96b751f1373
[INFO] sha for GitHub repo walfie/petronel: cd40352b845a095fef7a3836b5e7c96b751f1373
[INFO] validating manifest of walfie/petronel on toolchain master#e305df1846a6d985315917ae0c81b74af8b4e641
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of walfie/petronel on toolchain try#99a7498759a22b5684caf798a98b7e90ad9d2443
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing walfie/petronel
[INFO] finished frobbing walfie/petronel
[INFO] frobbed toml for walfie/petronel written to work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/walfie/petronel/Cargo.toml
[INFO] started frobbing walfie/petronel
[INFO] finished frobbing walfie/petronel
[INFO] frobbed toml for walfie/petronel written to work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/walfie/petronel/Cargo.toml
[INFO] crate walfie/petronel already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking walfie/petronel against master#e305df1846a6d985315917ae0c81b74af8b4e641 for pr-60039-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039-1/worker-7/master#e305df1846a6d985315917ae0c81b74af8b4e641:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/walfie/petronel:/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" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] bbed3706bff3e5e1a9c9f2846f59da1ac7334414cc68d172780b1c681fc20dd1
[INFO] running `"docker" "start" "-a" "bbed3706bff3e5e1a9c9f2846f59da1ac7334414cc68d172780b1c681fc20dd1"`
[INFO] [stderr]    Compiling rayon-core v1.2.1
[INFO] [stderr]     Checking libc v0.2.30
[INFO] [stderr]    Compiling either v1.1.0
[INFO] [stderr]    Compiling gcc v0.3.53
[INFO] [stderr]    Compiling scopeguard v0.3.2
[INFO] [stderr]    Compiling futures v0.1.15
[INFO] [stderr]    Compiling lazy_static v0.2.8
[INFO] [stderr]    Compiling openssl v0.9.17
[INFO] [stderr]     Checking lazycell v0.5.1
[INFO] [stderr]     Checking foreign-types v0.2.0
[INFO] [stderr]     Checking percent-encoding v1.0.0
[INFO] [stderr]     Checking itoa v0.3.3
[INFO] [stderr]     Checking serde v1.0.14
[INFO] [stderr]     Checking inflate v0.2.0
[INFO] [stderr]     Checking precomputed-hash v0.1.0
[INFO] [stderr]     Checking base64 v0.5.2
[INFO] [stderr]    Compiling coco v0.1.1
[INFO] [stderr]     Checking num-integer v0.1.35
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]     Checking base64 v0.6.0
[INFO] [stderr]     Checking deflate v0.7.16
[INFO] [stderr]     Checking iovec v0.1.0
[INFO] [stderr]     Checking net2 v0.2.31
[INFO] [stderr]     Checking rand v0.3.16
[INFO] [stderr]     Checking num_cpus v1.6.2
[INFO] [stderr]     Checking time v0.1.38
[INFO] [stderr]     Checking memchr v1.0.1
[INFO] [stderr]    Compiling unicase v2.0.0
[INFO] [stderr]    Compiling openssl-sys v0.9.17
[INFO] [stderr]    Compiling backtrace-sys v0.1.12
[INFO] [stderr]     Checking thread_local v0.3.4
[INFO] [stderr]     Checking num-iter v0.1.34
[INFO] [stderr]     Checking num-rational v0.1.39
[INFO] [stderr]     Checking bytes v0.4.5
[INFO] [stderr]     Checking mio v0.6.10
[INFO] [stderr]     Checking aho-corasick v0.6.3
[INFO] [stderr]     Checking tokio-service v0.1.0
[INFO] [stderr]     Checking futures-cpupool v0.1.5
[INFO] [stderr]    Compiling serde_derive_internals v0.16.0
[INFO] [stderr]     Checking url v1.5.1
[INFO] [stderr]     Checking num v0.1.40
[INFO] [stderr]     Checking png v0.8.0
[INFO] [stderr]     Checking regex v0.2.2
[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-1.5.1/src/form_urlencoded.rs:251:40
[INFO] [stderr]     |
[INFO] [stderr] 249 | impl<'a> Target for ::UrlQuery<'a> {
[INFO] [stderr]     |      -- lifetime `'a` defined here
[INFO] [stderr] 250 |     fn as_mut_string(&mut self) -> &mut String { &mut self.url.serialization }
[INFO] [stderr] 251 |     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] 
[INFO] [stderr]     Checking tokio-io v0.1.3
[INFO] [stderr]    Compiling phf_generator v0.7.21
[INFO] [stderr]     Checking rayon v0.8.2
[INFO] [stderr]     Checking mime v0.3.3
[INFO] [stderr]    Compiling serde_derive v1.0.14
[INFO] [stderr]    Compiling string_cache_codegen v0.4.0
[INFO] [stderr]     Checking tokio-core v0.1.9
[INFO] [stderr]    Compiling rayon v0.7.1
[INFO] [stderr]     Checking jpeg-decoder v0.1.13
[INFO] [stderr]     Checking tokio-proto v0.1.1
[INFO] [stderr]     Checking native-tls v0.1.4
[INFO] [stderr]    Compiling string_cache v0.6.2
[INFO] [stderr]     Checking chrono v0.4.0
[INFO] [stderr]     Checking serde_json v1.0.3
[INFO] [stderr]    Compiling ring v0.9.7
[INFO] [stderr]     Checking tokio-tls v0.1.3
[INFO] [stderr]     Checking image v0.14.0
[INFO] [stderr]     Checking hyper v0.11.2
[INFO] [stderr]     Checking twitter-stream-message v0.2.0
[INFO] [stderr]     Checking oauthcli v1.0.6
[INFO] [stderr]     Checking hyper-tls v0.1.2
[INFO] [stderr]     Checking backtrace v0.3.3
[INFO] [stderr]     Checking error-chain v0.10.0
[INFO] [stderr]     Checking twitter-stream v0.5.3
[INFO] [stderr]     Checking petronel v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `as_slices`
[INFO] [stderr]   --> src/circular_buffer.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn as_slices(&self) -> (&[T], &[T]) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 09s
[INFO] running `"docker" "inspect" "bbed3706bff3e5e1a9c9f2846f59da1ac7334414cc68d172780b1c681fc20dd1"`
[INFO] running `"docker" "rm" "-f" "bbed3706bff3e5e1a9c9f2846f59da1ac7334414cc68d172780b1c681fc20dd1"`
[INFO] [stdout] bbed3706bff3e5e1a9c9f2846f59da1ac7334414cc68d172780b1c681fc20dd1