[INFO] cloning repository mpdrescher/latex-preprocessor
[INFO] running `"git" "clone" "--bare" "git://github.com/mpdrescher/latex-preprocessor.git" "work/cache/sources/gh/mpdrescher/latex-preprocessor"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/mpdrescher/latex-preprocessor'...
[INFO] running `"git" "clone" "work/cache/sources/gh/mpdrescher/latex-preprocessor" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/mpdrescher/latex-preprocessor"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/mpdrescher/latex-preprocessor'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mpdrescher/latex-preprocessor" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/mpdrescher/latex-preprocessor"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/mpdrescher/latex-preprocessor'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 36a31eea87ed73b30434a1526a5f39ddf41f47e7
[INFO] sha for GitHub repo mpdrescher/latex-preprocessor: 36a31eea87ed73b30434a1526a5f39ddf41f47e7
[INFO] validating manifest of mpdrescher/latex-preprocessor on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of mpdrescher/latex-preprocessor on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing mpdrescher/latex-preprocessor
[INFO] finished frobbing mpdrescher/latex-preprocessor
[INFO] frobbed toml for mpdrescher/latex-preprocessor written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/mpdrescher/latex-preprocessor/Cargo.toml
[INFO] started frobbing mpdrescher/latex-preprocessor
[INFO] finished frobbing mpdrescher/latex-preprocessor
[INFO] frobbed toml for mpdrescher/latex-preprocessor written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/mpdrescher/latex-preprocessor/Cargo.toml
[INFO] crate mpdrescher/latex-preprocessor already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking mpdrescher/latex-preprocessor against try#8f81d0bf6baf07b92f1246696722485c4ca0b049 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-6/try#8f81d0bf6baf07b92f1246696722485c4ca0b049:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/mpdrescher/latex-preprocessor:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/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" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 941e044b529a72c4337d221dd64baf42485fb7007844b9783a08f80d60b825c8
[INFO] running `"docker" "start" "-a" "941e044b529a72c4337d221dd64baf42485fb7007844b9783a08f80d60b825c8"`
[INFO] [stderr]     Checking latex-preprocessor v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]    --> src/main.rs:181:44
[INFO] [stderr]     |
[INFO] [stderr] 181 |       string.into_iter().fold(String::new(), (|mut acc, x| {
[INFO] [stderr]     |  ____________________________________________^
[INFO] [stderr] 182 | |         acc.push_str(prefix);
[INFO] [stderr] 183 | |         acc.push_str(&x);
[INFO] [stderr] 184 | |         acc.push_str(suffix); 
[INFO] [stderr] 185 | |         acc
[INFO] [stderr] 186 | |     }))
[INFO] [stderr]     | |______^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_parens)] on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 181 |     string.into_iter().fold(String::new(), |mut acc, x| {
[INFO] [stderr] 182 |         acc.push_str(prefix);
[INFO] [stderr] 183 |         acc.push_str(&x);
[INFO] [stderr] 184 |         acc.push_str(suffix); 
[INFO] [stderr] 185 |         acc
[INFO] [stderr] 186 |     })
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]    --> src/main.rs:181:44
[INFO] [stderr]     |
[INFO] [stderr] 181 |       string.into_iter().fold(String::new(), (|mut acc, x| {
[INFO] [stderr]     |  ____________________________________________^
[INFO] [stderr] 182 | |         acc.push_str(prefix);
[INFO] [stderr] 183 | |         acc.push_str(&x);
[INFO] [stderr] 184 | |         acc.push_str(suffix); 
[INFO] [stderr] 185 | |         acc
[INFO] [stderr] 186 | |     }))
[INFO] [stderr]     | |______^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_parens)] on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 181 |     string.into_iter().fold(String::new(), |mut acc, x| {
[INFO] [stderr] 182 |         acc.push_str(prefix);
[INFO] [stderr] 183 |         acc.push_str(&x);
[INFO] [stderr] 184 |         acc.push_str(suffix); 
[INFO] [stderr] 185 |         acc
[INFO] [stderr] 186 |     })
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.87s
[INFO] running `"docker" "inspect" "941e044b529a72c4337d221dd64baf42485fb7007844b9783a08f80d60b825c8"`
[INFO] running `"docker" "rm" "-f" "941e044b529a72c4337d221dd64baf42485fb7007844b9783a08f80d60b825c8"`
[INFO] [stdout] 941e044b529a72c4337d221dd64baf42485fb7007844b9783a08f80d60b825c8