[INFO] updating cached repository gyscos/varf [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/gyscos/varf [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/gyscos/varf" "work/ex/beta-1.38-1/sources/1.37.0/gh/gyscos/varf"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/gyscos/varf'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/gyscos/varf" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/gyscos/varf"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/gyscos/varf'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 5783d1151b18861ff6357341037e152050a0b971 [INFO] sha for GitHub repo gyscos/varf: 5783d1151b18861ff6357341037e152050a0b971 [INFO] validating manifest of gyscos/varf on toolchain 1.37.0 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of gyscos/varf on toolchain beta-2019-08-13 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing gyscos/varf [INFO] finished frobbing gyscos/varf [INFO] frobbed toml for gyscos/varf written to work/ex/beta-1.38-1/sources/1.37.0/gh/gyscos/varf/Cargo.toml [INFO] started frobbing gyscos/varf [INFO] finished frobbing gyscos/varf [INFO] frobbed toml for gyscos/varf written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/gyscos/varf/Cargo.toml [INFO] crate gyscos/varf already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] testing gyscos/varf against 1.37.0 for beta-1.38-1 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/gyscos/varf:/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=warn" "-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" "+1.37.0" "build" "--frozen"` [INFO] [stdout] 30c4e4a64f289dcc09e6d9b0a6681b81eed47e1b52b824e4ff72524e1001047b [INFO] running `"docker" "start" "-a" "30c4e4a64f289dcc09e6d9b0a6681b81eed47e1b52b824e4ff72524e1001047b"` [INFO] [stderr] Compiling quick-error v1.1.0 [INFO] [stderr] Compiling sequence_trie v0.2.1 [INFO] [stderr] Compiling xdg-basedir v1.0.0 [INFO] [stderr] Compiling thread-id v3.0.0 [INFO] [stderr] Compiling memchr v1.0.1 [INFO] [stderr] Compiling conduit-mime-types v0.7.3 [INFO] [stderr] Compiling toml v0.4.1 [INFO] [stderr] Compiling serde_json v1.0.2 [INFO] [stderr] Compiling serde_json v0.8.6 [INFO] [stderr] Compiling hyper v0.10.5 [INFO] [stderr] Compiling thread_local v0.3.3 [INFO] [stderr] Compiling url v1.4.0 [INFO] [stderr] Compiling plugin v0.2.6 [INFO] [stderr] Compiling aho-corasick v0.6.3 [INFO] [stderr] Compiling regex v0.2.1 [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-1.4.0/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] = note: for more information, try `rustc --explain E0729` [INFO] [stderr] [INFO] [stderr] Compiling handlebars v0.26.2 [INFO] [stderr] Compiling iron v0.5.1 [INFO] [stderr] Compiling persistent v0.3.0 [INFO] [stderr] Compiling mount v0.3.0 [INFO] [stderr] Compiling handlebars-iron v0.24.1 [INFO] [stderr] Compiling router v0.5.1 [INFO] [stderr] Compiling bodyparser v0.5.0 [INFO] [stderr] Compiling staticfile v0.4.0 [INFO] [stderr] Compiling urlencoded v0.5.0 [INFO] [stderr] Compiling varf v0.1.2 (/opt/crater/workdir) [INFO] [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used [INFO] [stderr] --> src/visu.rs:71:5 [INFO] [stderr] | [INFO] [stderr] 71 | / divs.iter() [INFO] [stderr] 72 | | .rev() [INFO] [stderr] 73 | | .map(|k| n / k) [INFO] [stderr] 74 | | .collect::>() [INFO] [stderr] 75 | | .iter() [INFO] [stderr] 76 | | .map(|k| divs.push(*k)) [INFO] [stderr] 77 | | .collect::>(); [INFO] [stderr] | |______________________________^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_must_use)] on by default [INFO] [stderr] = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 54.25s [INFO] running `"docker" "inspect" "30c4e4a64f289dcc09e6d9b0a6681b81eed47e1b52b824e4ff72524e1001047b"` [INFO] running `"docker" "rm" "-f" "30c4e4a64f289dcc09e6d9b0a6681b81eed47e1b52b824e4ff72524e1001047b"` [INFO] [stdout] 30c4e4a64f289dcc09e6d9b0a6681b81eed47e1b52b824e4ff72524e1001047b [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/gyscos/varf:/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=warn" "-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" "+1.37.0" "test" "--frozen" "--no-run"` [INFO] [stdout] d289602dc48eda1f40657874c5318b30c4888b2758de4ed311f26cb15f0dc1e0 [INFO] running `"docker" "start" "-a" "d289602dc48eda1f40657874c5318b30c4888b2758de4ed311f26cb15f0dc1e0"` [INFO] [stderr] Compiling varf v0.1.2 (/opt/crater/workdir) [INFO] [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used [INFO] [stderr] --> src/visu.rs:71:5 [INFO] [stderr] | [INFO] [stderr] 71 | / divs.iter() [INFO] [stderr] 72 | | .rev() [INFO] [stderr] 73 | | .map(|k| n / k) [INFO] [stderr] 74 | | .collect::>() [INFO] [stderr] 75 | | .iter() [INFO] [stderr] 76 | | .map(|k| divs.push(*k)) [INFO] [stderr] 77 | | .collect::>(); [INFO] [stderr] | |______________________________^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_must_use)] on by default [INFO] [stderr] = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 2.14s [INFO] running `"docker" "inspect" "d289602dc48eda1f40657874c5318b30c4888b2758de4ed311f26cb15f0dc1e0"` [INFO] running `"docker" "rm" "-f" "d289602dc48eda1f40657874c5318b30c4888b2758de4ed311f26cb15f0dc1e0"` [INFO] [stdout] d289602dc48eda1f40657874c5318b30c4888b2758de4ed311f26cb15f0dc1e0 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/gyscos/varf:/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=warn" "-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" "+1.37.0" "test" "--frozen"` [INFO] [stdout] 399e54922e3c077253709e3f5823e686d518f0b08c277f57153a100b0733d229 [INFO] running `"docker" "start" "-a" "399e54922e3c077253709e3f5823e686d518f0b08c277f57153a100b0733d229"` [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.12s [INFO] [stderr] Running /opt/crater/target/debug/deps/varf-62e216bd41e79737 [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] running `"docker" "inspect" "399e54922e3c077253709e3f5823e686d518f0b08c277f57153a100b0733d229"` [INFO] running `"docker" "rm" "-f" "399e54922e3c077253709e3f5823e686d518f0b08c277f57153a100b0733d229"` [INFO] [stdout] 399e54922e3c077253709e3f5823e686d518f0b08c277f57153a100b0733d229