[INFO] updating cached repository Scetch/rlstats-rs [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/Scetch/rlstats-rs [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/Scetch/rlstats-rs" "work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/Scetch/rlstats-rs"` [INFO] [stderr] Cloning into 'work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/Scetch/rlstats-rs'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/Scetch/rlstats-rs" "work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/Scetch/rlstats-rs"` [INFO] [stderr] Cloning into 'work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/Scetch/rlstats-rs'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] e35bbd84acd6f3bb900ecd8d5d7f51fbca18eead [INFO] sha for GitHub repo Scetch/rlstats-rs: e35bbd84acd6f3bb900ecd8d5d7f51fbca18eead [INFO] validating manifest of Scetch/rlstats-rs on toolchain master#5f9c0448dde167128d668da4555879f64e56af1d [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of Scetch/rlstats-rs on toolchain try#8ec8125bea94852768b56958f05da47666c21ab0 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing Scetch/rlstats-rs [INFO] finished frobbing Scetch/rlstats-rs [INFO] frobbed toml for Scetch/rlstats-rs written to work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/Scetch/rlstats-rs/Cargo.toml [INFO] started frobbing Scetch/rlstats-rs [INFO] finished frobbing Scetch/rlstats-rs [INFO] frobbed toml for Scetch/rlstats-rs written to work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/Scetch/rlstats-rs/Cargo.toml [INFO] crate Scetch/rlstats-rs already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] checking Scetch/rlstats-rs against try#8ec8125bea94852768b56958f05da47666c21ab0 for pr-62133 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62133/worker-4/try#8ec8125bea94852768b56958f05da47666c21ab0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/Scetch/rlstats-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" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] 1b0130cde2d8eee315528d58e6134f2aaf32a7b2c30c1a3017418e3cdd7a7725 [INFO] running `"docker" "start" "-a" "1b0130cde2d8eee315528d58e6134f2aaf32a7b2c30c1a3017418e3cdd7a7725"` [INFO] [stderr] Checking tokio-threadpool v0.1.3 [INFO] [stderr] Checking url v1.7.0 [INFO] [stderr] Compiling serde_derive v1.0.53 [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] Checking serde_urlencoded v0.5.1 [INFO] [stderr] Checking tokio-fs v0.1.0 [INFO] [stderr] Checking tokio v0.1.6 [INFO] [stderr] Checking tokio-core v0.1.17 [INFO] [stderr] Checking tokio-proto v0.1.1 [INFO] [stderr] Checking tokio-tls v0.1.4 [INFO] [stderr] Checking hyper v0.11.26 [INFO] [stderr] Checking hyper-tls v0.1.3 [INFO] [stderr] Checking reqwest v0.8.5 [INFO] [stderr] Checking rlstats-rs v0.1.1 (/opt/crater/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 39.52s [INFO] running `"docker" "inspect" "1b0130cde2d8eee315528d58e6134f2aaf32a7b2c30c1a3017418e3cdd7a7725"` [INFO] running `"docker" "rm" "-f" "1b0130cde2d8eee315528d58e6134f2aaf32a7b2c30c1a3017418e3cdd7a7725"` [INFO] [stdout] 1b0130cde2d8eee315528d58e6134f2aaf32a7b2c30c1a3017418e3cdd7a7725