[INFO] updating cached repository JJJollyjim/mathsbot [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/JJJollyjim/mathsbot [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/JJJollyjim/mathsbot" "work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/JJJollyjim/mathsbot"` [INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/JJJollyjim/mathsbot'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/JJJollyjim/mathsbot" "work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/JJJollyjim/mathsbot"` [INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/JJJollyjim/mathsbot'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 4da2c435fae9247bd5a099e1b00c88059ddbdcde [INFO] sha for GitHub repo JJJollyjim/mathsbot: 4da2c435fae9247bd5a099e1b00c88059ddbdcde [INFO] validating manifest of JJJollyjim/mathsbot 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 JJJollyjim/mathsbot 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 JJJollyjim/mathsbot [INFO] finished frobbing JJJollyjim/mathsbot [INFO] frobbed toml for JJJollyjim/mathsbot written to work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/JJJollyjim/mathsbot/Cargo.toml [INFO] started frobbing JJJollyjim/mathsbot [INFO] finished frobbing JJJollyjim/mathsbot [INFO] frobbed toml for JJJollyjim/mathsbot written to work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/JJJollyjim/mathsbot/Cargo.toml [INFO] crate JJJollyjim/mathsbot 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 JJJollyjim/mathsbot against try#99a7498759a22b5684caf798a98b7e90ad9d2443 for pr-60039-1 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039-1/worker-2/try#99a7498759a22b5684caf798a98b7e90ad9d2443:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/JJJollyjim/mathsbot:/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" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] a80a7bd52f03645ce5522161fe0db77a194e5c813ec8689b324109ad1634321c [INFO] running `"docker" "start" "-a" "a80a7bd52f03645ce5522161fe0db77a194e5c813ec8689b324109ad1634321c"` [INFO] [stderr] Checking unicode-normalization v0.1.6 [INFO] [stderr] Checking vec_shift v0.1.0 [INFO] [stderr] Checking base64 v0.7.0 [INFO] [stderr] Checking chrono v0.4.2 [INFO] [stderr] Compiling serde_derive v1.0.51 [INFO] [stderr] Checking env_logger v0.4.3 [INFO] [stderr] Checking idna v0.1.4 [INFO] [stderr] Checking url v1.7.0 [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] [INFO] [stderr] Checking hyper v0.10.13 [INFO] [stderr] Checking multipart v0.13.6 [INFO] [stderr] Checking evzht9h3nznqzwl v0.0.2 [INFO] [stderr] Checking hyper-native-tls v0.2.4 [INFO] [stderr] Checking serenity v0.4.8 [INFO] [stderr] warning[E0713]: borrow may still be in use when destructor runs [INFO] [stderr] --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/serenity-0.4.8/src/framework/standard/args.rs:127:13 [INFO] [stderr] | [INFO] [stderr] 116 | fn get_and_remove(b: &mut Vec) -> Option<&str> { [INFO] [stderr] | - let's call the lifetime of this reference `'1` [INFO] [stderr] ... [INFO] [stderr] 127 | GetThenRemove(b).0.get(0).map(|s| s.as_str()) [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^--------------------------- [INFO] [stderr] | | [INFO] [stderr] | returning this value requires that borrow lasts for `'1` [INFO] [stderr] 128 | } [INFO] [stderr] | - here is drop of temporary value; whose type `framework::standard::args::Args::single_zc::get_and_remove::GetThenRemove<'_>` implements the `Drop` trait [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 mathsbot v0.1.0 (/opt/crater/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 44.97s [INFO] running `"docker" "inspect" "a80a7bd52f03645ce5522161fe0db77a194e5c813ec8689b324109ad1634321c"` [INFO] running `"docker" "rm" "-f" "a80a7bd52f03645ce5522161fe0db77a194e5c813ec8689b324109ad1634321c"` [INFO] [stdout] a80a7bd52f03645ce5522161fe0db77a194e5c813ec8689b324109ad1634321c