[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/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/gyscos/varf"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/gyscos/varf'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/gyscos/varf" "work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/gyscos/varf"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/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 master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of gyscos/varf on toolchain try#7fea0229842e79db1159ea58ad9a653b288efee9
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "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/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/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/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/gyscos/varf/Cargo.toml
[INFO] crate gyscos/varf has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing gyscos/varf against master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54 for pr-57967
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-3/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/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=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" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "build" "--frozen"`
[INFO] [stdout] 198837b648e0ac29218f9e7e4ff3a0bf282f5e8ec896d43be700ad5b1e24a893
[INFO] running `"docker" "start" "-a" "198837b648e0ac29218f9e7e4ff3a0bf282f5e8ec896d43be700ad5b1e24a893"`
[INFO] [stderr]    Compiling xdg-basedir v1.0.0
[INFO] [stderr]    Compiling conduit-mime-types v0.7.3
[INFO] [stderr]    Compiling toml v0.4.1
[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 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 handlebars-iron v0.24.1
[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::<Vec<usize>>()
[INFO] [stderr] 75 | |         .iter()
[INFO] [stderr] 76 | |         .map(|k| divs.push(*k))
[INFO] [stderr] 77 | |         .collect::<Vec<()>>();
[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 20.68s
[INFO] running `"docker" "inspect" "198837b648e0ac29218f9e7e4ff3a0bf282f5e8ec896d43be700ad5b1e24a893"`
[INFO] running `"docker" "rm" "-f" "198837b648e0ac29218f9e7e4ff3a0bf282f5e8ec896d43be700ad5b1e24a893"`
[INFO] [stdout] 198837b648e0ac29218f9e7e4ff3a0bf282f5e8ec896d43be700ad5b1e24a893
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-3/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/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=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" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] 0639c83f0cb5c7d6f6ff2fff861d0394f99a58788b75341641774b405f29ce3b
[INFO] running `"docker" "start" "-a" "0639c83f0cb5c7d6f6ff2fff861d0394f99a58788b75341641774b405f29ce3b"`
[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::<Vec<usize>>()
[INFO] [stderr] 75 | |         .iter()
[INFO] [stderr] 76 | |         .map(|k| divs.push(*k))
[INFO] [stderr] 77 | |         .collect::<Vec<()>>();
[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 1.49s
[INFO] running `"docker" "inspect" "0639c83f0cb5c7d6f6ff2fff861d0394f99a58788b75341641774b405f29ce3b"`
[INFO] running `"docker" "rm" "-f" "0639c83f0cb5c7d6f6ff2fff861d0394f99a58788b75341641774b405f29ce3b"`
[INFO] [stdout] 0639c83f0cb5c7d6f6ff2fff861d0394f99a58788b75341641774b405f29ce3b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-3/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/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=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" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "test" "--frozen"`
[INFO] [stdout] c513bdc5319fb979ff72ae13670946aa822ca8f97860e235e663ac94b4c5bfb9
[INFO] running `"docker" "start" "-a" "c513bdc5319fb979ff72ae13670946aa822ca8f97860e235e663ac94b4c5bfb9"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.18s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/varf-3de507b7baf6837d
[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" "c513bdc5319fb979ff72ae13670946aa822ca8f97860e235e663ac94b4c5bfb9"`
[INFO] running `"docker" "rm" "-f" "c513bdc5319fb979ff72ae13670946aa822ca8f97860e235e663ac94b4c5bfb9"`
[INFO] [stdout] c513bdc5319fb979ff72ae13670946aa822ca8f97860e235e663ac94b4c5bfb9