[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-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/gyscos/varf"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/gyscos/varf'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/gyscos/varf" "work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/gyscos/varf"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/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#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of gyscos/varf on toolchain try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-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-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/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-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/gyscos/varf/Cargo.toml
[INFO] crate gyscos/varf already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking gyscos/varf against master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7 for pr-59199
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-59199/worker-5/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/gyscos/varf:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c6f40c82b47f3a8cad915fe17a013f74b871faa76427d812b9ed0850e935f275
[INFO] running `"docker" "start" "-a" "c6f40c82b47f3a8cad915fe17a013f74b871faa76427d812b9ed0850e935f275"`
[INFO] [stderr]     Checking conduit-mime-types v0.7.3
[INFO] [stderr]     Checking toml v0.4.1
[INFO] [stderr]     Checking serde_json v1.0.2
[INFO] [stderr]     Checking serde_json v0.8.6
[INFO] [stderr]     Checking iron v0.5.1
[INFO] [stderr]     Checking persistent v0.3.0
[INFO] [stderr]     Checking mount v0.3.0
[INFO] [stderr]     Checking router v0.5.1
[INFO] [stderr]     Checking bodyparser v0.5.0
[INFO] [stderr]     Checking staticfile v0.4.0
[INFO] [stderr]     Checking handlebars v0.26.2
[INFO] [stderr]     Checking urlencoded v0.5.0
[INFO] [stderr]     Checking handlebars-iron v0.24.1
[INFO] [stderr]     Checking 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] 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 8.24s
[INFO] running `"docker" "inspect" "c6f40c82b47f3a8cad915fe17a013f74b871faa76427d812b9ed0850e935f275"`
[INFO] running `"docker" "rm" "-f" "c6f40c82b47f3a8cad915fe17a013f74b871faa76427d812b9ed0850e935f275"`
[INFO] [stdout] c6f40c82b47f3a8cad915fe17a013f74b871faa76427d812b9ed0850e935f275