[INFO] updating cached repository ward/rust-chronorace
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ward/rust-chronorace
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ward/rust-chronorace" "work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/ward/rust-chronorace"`
[INFO] [stderr] Cloning into 'work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/ward/rust-chronorace'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ward/rust-chronorace" "work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/ward/rust-chronorace"`
[INFO] [stderr] Cloning into 'work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/ward/rust-chronorace'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e1e5f7eb3c12bab2f2d313d759fdee3b76f7a354
[INFO] sha for GitHub repo ward/rust-chronorace: e1e5f7eb3c12bab2f2d313d759fdee3b76f7a354
[INFO] validating manifest of ward/rust-chronorace on toolchain master#39401465da4ce27aeeb2c2a26133ac35c63aa515
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ward/rust-chronorace on toolchain try#f45cc3094ee337acd688771b9234318046b0572d
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ward/rust-chronorace
[INFO] finished frobbing ward/rust-chronorace
[INFO] frobbed toml for ward/rust-chronorace written to work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/ward/rust-chronorace/Cargo.toml
[INFO] started frobbing ward/rust-chronorace
[INFO] finished frobbing ward/rust-chronorace
[INFO] frobbed toml for ward/rust-chronorace written to work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/ward/rust-chronorace/Cargo.toml
[INFO] crate ward/rust-chronorace already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] checking ward/rust-chronorace against master#39401465da4ce27aeeb2c2a26133ac35c63aa515 for pr-60914
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60914/worker-0/master#39401465da4ce27aeeb2c2a26133ac35c63aa515:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/ward/rust-chronorace:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 46f263332ef273f5b5cfc7607db3db936f3d8a136411568824a769ec312c6f0e
[INFO] running `"docker" "start" "-a" "46f263332ef273f5b5cfc7607db3db936f3d8a136411568824a769ec312c6f0e"`
[INFO] [stderr]     Checking httparse v1.2.0
[INFO] [stderr]    Compiling unicase v2.1.0
[INFO] [stderr]     Checking encoding_rs v0.8.8
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]    Compiling unicase v1.4.0
[INFO] [stderr]     Checking time v0.1.35
[INFO] [stderr]     Checking url v1.2.3
[INFO] [stderr]     Checking phf_shared v0.7.23
[INFO] [stderr]     Checking openssl v0.10.12
[INFO] [stderr]     Checking libflate v0.1.18
[INFO] [stderr]     Checking serde_json v1.0.31
[INFO] [stderr]     Checking parking_lot v0.6.4
[INFO] [stderr]     Checking tokio-threadpool v0.1.7
[INFO] [stderr]     Checking phf v0.7.23
[INFO] [stderr]    Compiling phf_generator v0.7.23
[INFO] [stderr]     Checking tokio-reactor v0.1.6
[INFO] [stderr]     Checking tokio-fs v0.1.3
[INFO] [stderr]    Compiling phf_codegen v0.7.23
[INFO] [stderr]     Checking mime v0.3.9
[INFO] [stderr]    Compiling mime_guess v2.0.0-alpha.6
[INFO] [stderr]     Checking tokio-udp v0.1.2
[INFO] [stderr]     Checking tokio-tcp v0.1.2
[INFO] [stderr]     Checking tokio-uds 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-1.2.3/src/form_urlencoded.rs:246:40
[INFO] [stderr]     |
[INFO] [stderr] 244 | impl<'a> Target for ::UrlQuery<'a> {
[INFO] [stderr]     |      -- lifetime `'a` defined here
[INFO] [stderr] 245 |     fn as_mut_string(&mut self) -> &mut String { &mut self.url.serialization }
[INFO] [stderr] 246 |     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 serde_urlencoded v0.5.3
[INFO] [stderr]     Checking tokio v0.1.11
[INFO] [stderr]     Checking hyper v0.12.11
[INFO] [stderr]     Checking native-tls v0.2.1
[INFO] [stderr]     Checking hyper-tls v0.3.1
[INFO] [stderr]     Checking reqwest v0.9.2
[INFO] [stderr]     Checking rust-chronorace v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.79s
[INFO] running `"docker" "inspect" "46f263332ef273f5b5cfc7607db3db936f3d8a136411568824a769ec312c6f0e"`
[INFO] running `"docker" "rm" "-f" "46f263332ef273f5b5cfc7607db3db936f3d8a136411568824a769ec312c6f0e"`
[INFO] [stdout] 46f263332ef273f5b5cfc7607db3db936f3d8a136411568824a769ec312c6f0e