[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-1.37-6/sources/1.36.0/gh/gyscos/varf"` [INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/gyscos/varf'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/gyscos/varf" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/gyscos/varf"` [INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/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 1.36.0 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of gyscos/varf on toolchain beta-2019-07-23 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "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-1.37-6/sources/1.36.0/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-1.37-6/sources/beta-2019-07-23/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" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] testing gyscos/varf against beta-2019-07-23 for beta-1.37-6 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/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" "+beta-2019-07-23" "build" "--frozen"` [INFO] [stdout] c7e50ae369b9169eceeb0a64e5415cfbbd8006cab5ef37815094e327bbdb3097 [INFO] running `"docker" "start" "-a" "c7e50ae369b9169eceeb0a64e5415cfbbd8006cab5ef37815094e327bbdb3097"` [INFO] [stderr] Compiling rustc-serialize v0.3.23 [INFO] [stderr] Compiling lazy_static v0.2.4 [INFO] [stderr] Compiling sequence_trie v0.2.1 [INFO] [stderr] Compiling same-file v0.1.3 [INFO] [stderr] Compiling route-recognizer v0.1.11 [INFO] [stderr] Compiling getopts v0.2.14 [INFO] [stderr] Compiling time v0.1.36 [INFO] [stderr] Compiling num_cpus v1.3.0 [INFO] [stderr] Compiling mime v0.2.3 [INFO] [stderr] Compiling error v0.1.9 [INFO] [stderr] Compiling toml v0.4.1 [INFO] [stderr] warning[E0503]: cannot use `state` because it was mutably borrowed [INFO] [stderr] --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/getopts-0.2.14/src/lib.rs:1008:33 [INFO] [stderr] | [INFO] [stderr] 955 | let mut machine = |cont: &mut bool, (i, c): (usize, char)| { [INFO] [stderr] | ---------------------------------------- borrow of `state` occurs here [INFO] [stderr] ... [INFO] [stderr] 959 | state = match (state, whitespace, limit) { [INFO] [stderr] | ----- borrow occurs due to use of `state` in closure [INFO] [stderr] ... [INFO] [stderr] 1008 | while cont && match state { B | C => true, A => false } { [INFO] [stderr] | ^ use of borrowed `state` [INFO] [stderr] 1009 | machine(&mut cont, (fake_i, ' ')); [INFO] [stderr] | ------- borrow later used here [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 serde_json v1.0.2 [INFO] [stderr] Compiling serde_json v0.8.6 [INFO] [stderr] Compiling hyper v0.10.5 [INFO] [stderr] Compiling walkdir v1.0.7 [INFO] [stderr] Compiling handlebars v0.26.2 [INFO] [stderr] Compiling conduit-mime-types v0.7.3 [INFO] [stderr] Compiling iron v0.5.1 [INFO] [stderr] Compiling persistent v0.3.0 [INFO] [stderr] Compiling mount v0.3.0 [INFO] [stderr] Compiling router v0.5.1 [INFO] [stderr] Compiling handlebars-iron v0.24.1 [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 48.34s [INFO] running `"docker" "inspect" "c7e50ae369b9169eceeb0a64e5415cfbbd8006cab5ef37815094e327bbdb3097"` [INFO] running `"docker" "rm" "-f" "c7e50ae369b9169eceeb0a64e5415cfbbd8006cab5ef37815094e327bbdb3097"` [INFO] [stdout] c7e50ae369b9169eceeb0a64e5415cfbbd8006cab5ef37815094e327bbdb3097 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/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" "+beta-2019-07-23" "test" "--frozen" "--no-run"` [INFO] [stdout] e49d538301de09df4fe5cef2269243c53951d69e0638a3fe262562c27c8d8620 [INFO] running `"docker" "start" "-a" "e49d538301de09df4fe5cef2269243c53951d69e0638a3fe262562c27c8d8620"` [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 1.56s [INFO] running `"docker" "inspect" "e49d538301de09df4fe5cef2269243c53951d69e0638a3fe262562c27c8d8620"` [INFO] running `"docker" "rm" "-f" "e49d538301de09df4fe5cef2269243c53951d69e0638a3fe262562c27c8d8620"` [INFO] [stdout] e49d538301de09df4fe5cef2269243c53951d69e0638a3fe262562c27c8d8620 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/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" "+beta-2019-07-23" "test" "--frozen"` [INFO] [stdout] d2645a390a17226be88a2f18e47b1f62c594a38a2cf6520a2b97e72981737e0f [INFO] running `"docker" "start" "-a" "d2645a390a17226be88a2f18e47b1f62c594a38a2cf6520a2b97e72981737e0f"` [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.06s [INFO] [stderr] Running /opt/crater/target/debug/deps/varf-419a1118f9573449 [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" "d2645a390a17226be88a2f18e47b1f62c594a38a2cf6520a2b97e72981737e0f"` [INFO] running `"docker" "rm" "-f" "d2645a390a17226be88a2f18e47b1f62c594a38a2cf6520a2b97e72981737e0f"` [INFO] [stdout] d2645a390a17226be88a2f18e47b1f62c594a38a2cf6520a2b97e72981737e0f