[INFO] updating cached repository https://github.com/brimatteng/Learn-Rust---Hacker-News-Scraper [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"` [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] fabc7e90997d7f4871ab9c02b4b67ea0e8bf9a2a [INFO] checking brimatteng/Learn-Rust---Hacker-News-Scraper against master#c9edc02e8320a9e5799d185910ece7d491f524e6 for pr-64398 [INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrimatteng%2FLearn-Rust---Hacker-News-Scraper" "work/builds/worker-5/source"` [INFO] [stderr] Cloning into 'work/builds/worker-5/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/brimatteng/Learn-Rust---Hacker-News-Scraper on toolchain c9edc02e8320a9e5799d185910ece7d491f524e6-alt [INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/brimatteng/Learn-Rust---Hacker-News-Scraper [INFO] finished tweaking git repo https://github.com/brimatteng/Learn-Rust---Hacker-News-Scraper [INFO] tweaked toml for git repo https://github.com/brimatteng/Learn-Rust---Hacker-News-Scraper written to work/builds/worker-5/source/Cargo.toml [INFO] crate git repo https://github.com/brimatteng/Learn-Rust---Hacker-News-Scraper already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] 3042b3b90a71f986d1c9035b0f5965235efa486b20054a7ffabf9abcb32ab7f5 [INFO] running `"docker" "start" "-a" "3042b3b90a71f986d1c9035b0f5965235efa486b20054a7ffabf9abcb32ab7f5"` [INFO] [stderr] Checking libflate v0.1.8 [INFO] [stderr] Checking colored v1.5.1 [INFO] [stderr] Compiling phf_generator v0.7.21 [INFO] [stderr] Checking openssl-sys v0.9.14 [INFO] [stderr] Checking url v1.5.0 [INFO] [stderr] Checking tendril v0.2.4 [INFO] [stderr] Compiling string_cache_codegen v0.3.1 [INFO] [stderr] Compiling phf_codegen v0.7.21 [INFO] [stderr] Checking openssl v0.9.14 [INFO] [stderr] warning[E0713]: borrow may still be in use when destructor runs [INFO] [stderr] --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/url-1.5.0/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] = note: for more information, try `rustc --explain E0729` [INFO] [stderr] [INFO] [stderr] Checking hyper v0.10.12 [INFO] [stderr] Checking serde_urlencoded v0.5.1 [INFO] [stderr] Compiling html5ever v0.14.1 [INFO] [stderr] Compiling string_cache v0.4.0 [INFO] [stderr] Compiling html5ever-atoms v0.2.2 [INFO] [stderr] Checking native-tls v0.1.2 [INFO] [stderr] Checking hyper-native-tls v0.2.4 [INFO] [stderr] Checking reqwest v0.6.2 [INFO] [stderr] Checking select v0.4.0 [INFO] [stderr] Checking hacker-news-reader v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:37:5 [INFO] [stderr] | [INFO] [stderr] 37 | resp.read_to_string(&mut content); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:37:5 [INFO] [stderr] | [INFO] [stderr] 37 | resp.read_to_string(&mut content); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 47.56s [INFO] running `"docker" "inspect" "3042b3b90a71f986d1c9035b0f5965235efa486b20054a7ffabf9abcb32ab7f5"` [INFO] running `"docker" "rm" "-f" "3042b3b90a71f986d1c9035b0f5965235efa486b20054a7ffabf9abcb32ab7f5"` [INFO] [stdout] 3042b3b90a71f986d1c9035b0f5965235efa486b20054a7ffabf9abcb32ab7f5