[INFO] updating cached repository lweixw/rust_mini_docker_image [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/lweixw/rust_mini_docker_image [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/lweixw/rust_mini_docker_image" "work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/lweixw/rust_mini_docker_image"` [INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/lweixw/rust_mini_docker_image'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/lweixw/rust_mini_docker_image" "work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/lweixw/rust_mini_docker_image"` [INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/lweixw/rust_mini_docker_image'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] b57ba8c38112c0450da242b8a9b6f1848973bd19 [INFO] sha for GitHub repo lweixw/rust_mini_docker_image: b57ba8c38112c0450da242b8a9b6f1848973bd19 [INFO] validating manifest of lweixw/rust_mini_docker_image on toolchain master#452087b4bf18cece2d52d7cd8c9147195e5404bf [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of lweixw/rust_mini_docker_image on toolchain try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing lweixw/rust_mini_docker_image [INFO] finished frobbing lweixw/rust_mini_docker_image [INFO] frobbed toml for lweixw/rust_mini_docker_image written to work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/lweixw/rust_mini_docker_image/Cargo.toml [INFO] started frobbing lweixw/rust_mini_docker_image [INFO] finished frobbing lweixw/rust_mini_docker_image [INFO] frobbed toml for lweixw/rust_mini_docker_image written to work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/lweixw/rust_mini_docker_image/Cargo.toml [INFO] crate lweixw/rust_mini_docker_image already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] checking lweixw/rust_mini_docker_image against master#452087b4bf18cece2d52d7cd8c9147195e5404bf for pr-63247 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63247/worker-5/master#452087b4bf18cece2d52d7cd8c9147195e5404bf:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/lweixw/rust_mini_docker_image:/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" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] c7b251cd00d5f4c3ab898e5d06228eb9531abd0f901f0e99e3dec1e7e69638fb [INFO] running `"docker" "start" "-a" "c7b251cd00d5f4c3ab898e5d06228eb9531abd0f901f0e99e3dec1e7e69638fb"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Checking url v1.7.0 [INFO] [stderr] Checking plugin v0.2.6 [INFO] [stderr] Compiling phf_shared v0.7.22 [INFO] [stderr] Compiling phf_generator v0.7.22 [INFO] [stderr] Checking phf v0.7.22 [INFO] [stderr] Compiling phf_codegen v0.7.22 [INFO] [stderr] Compiling mime_guess v1.8.4 [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 hyper v0.10.13 [INFO] [stderr] Checking iron v0.6.0 [INFO] [stderr] Checking response_time v0.1.0 (/opt/crater/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 8.80s [INFO] running `"docker" "inspect" "c7b251cd00d5f4c3ab898e5d06228eb9531abd0f901f0e99e3dec1e7e69638fb"` [INFO] running `"docker" "rm" "-f" "c7b251cd00d5f4c3ab898e5d06228eb9531abd0f901f0e99e3dec1e7e69638fb"` [INFO] [stdout] c7b251cd00d5f4c3ab898e5d06228eb9531abd0f901f0e99e3dec1e7e69638fb