[INFO] updating cached repository arminha/zhongwen-anki
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/arminha/zhongwen-anki
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/arminha/zhongwen-anki" "work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/arminha/zhongwen-anki"`
[INFO] [stderr] Cloning into 'work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/arminha/zhongwen-anki'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/arminha/zhongwen-anki" "work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/gh/arminha/zhongwen-anki"`
[INFO] [stderr] Cloning into 'work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/gh/arminha/zhongwen-anki'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a5b3f6a7c1b1b2fce84e5c03e31a5c3538cdcd41
[INFO] sha for GitHub repo arminha/zhongwen-anki: a5b3f6a7c1b1b2fce84e5c03e31a5c3538cdcd41
[INFO] validating manifest of arminha/zhongwen-anki on toolchain master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of arminha/zhongwen-anki on toolchain try#58b21121d0b447ceb3f1a655155d802191acf044
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing arminha/zhongwen-anki
[INFO] finished frobbing arminha/zhongwen-anki
[INFO] frobbed toml for arminha/zhongwen-anki written to work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/arminha/zhongwen-anki/Cargo.toml
[INFO] started frobbing arminha/zhongwen-anki
[INFO] finished frobbing arminha/zhongwen-anki
[INFO] frobbed toml for arminha/zhongwen-anki written to work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/gh/arminha/zhongwen-anki/Cargo.toml
[INFO] crate arminha/zhongwen-anki already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking arminha/zhongwen-anki against master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504 for pr-61100
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-61100/worker-0/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/arminha/zhongwen-anki:/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" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 19cc7e61a7ef772659ff39a6434349b367e9e88bfd20859fa230fe8f8c34f35d
[INFO] running `"docker" "start" "-a" "19cc7e61a7ef772659ff39a6434349b367e9e88bfd20859fa230fe8f8c34f35d"`
[INFO] [stderr]    Compiling syn v0.15.22
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]    Compiling structopt-derive v0.2.13
[INFO] [stderr]    Compiling serde_derive v1.0.80
[INFO] [stderr]     Checking structopt v0.2.13
[INFO] [stderr]     Checking zhongwen-anki v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/pinyin.rs:170:17
[INFO] [stderr]     |
[INFO] [stderr] 170 |     'outer: for mut c in chars.iter_mut().rev() {
[INFO] [stderr]     |                 ----^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/pinyin.rs:183:13
[INFO] [stderr]     |
[INFO] [stderr] 183 |         for mut c in chars.iter_mut() {
[INFO] [stderr]     |             ----^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/pinyin.rs:170:17
[INFO] [stderr]     |
[INFO] [stderr] 170 |     'outer: for mut c in chars.iter_mut().rev() {
[INFO] [stderr]     |                 ----^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/pinyin.rs:183:13
[INFO] [stderr]     |
[INFO] [stderr] 183 |         for mut c in chars.iter_mut() {
[INFO] [stderr]     |             ----^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.83s
[INFO] running `"docker" "inspect" "19cc7e61a7ef772659ff39a6434349b367e9e88bfd20859fa230fe8f8c34f35d"`
[INFO] running `"docker" "rm" "-f" "19cc7e61a7ef772659ff39a6434349b367e9e88bfd20859fa230fe8f8c34f35d"`
[INFO] [stdout] 19cc7e61a7ef772659ff39a6434349b367e9e88bfd20859fa230fe8f8c34f35d