[INFO] updating cached repository stepchowfun/tagref
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/stepchowfun/tagref
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/stepchowfun/tagref" "work/ex/pr-60174/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/stepchowfun/tagref"`
[INFO] [stderr] Cloning into 'work/ex/pr-60174/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/stepchowfun/tagref'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/stepchowfun/tagref" "work/ex/pr-60174/sources/try#74092351c05ae61047b2be02024415546595e974/gh/stepchowfun/tagref"`
[INFO] [stderr] Cloning into 'work/ex/pr-60174/sources/try#74092351c05ae61047b2be02024415546595e974/gh/stepchowfun/tagref'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 07351e39f9fd9d1ef38d89c926ced4de9f2f0a49
[INFO] sha for GitHub repo stepchowfun/tagref: 07351e39f9fd9d1ef38d89c926ced4de9f2f0a49
[INFO] validating manifest of stepchowfun/tagref on toolchain master#e305df1846a6d985315917ae0c81b74af8b4e641
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of stepchowfun/tagref on toolchain try#74092351c05ae61047b2be02024415546595e974
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+74092351c05ae61047b2be02024415546595e974-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing stepchowfun/tagref
[INFO] finished frobbing stepchowfun/tagref
[INFO] frobbed toml for stepchowfun/tagref written to work/ex/pr-60174/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/stepchowfun/tagref/Cargo.toml
[INFO] started frobbing stepchowfun/tagref
[INFO] finished frobbing stepchowfun/tagref
[INFO] frobbed toml for stepchowfun/tagref written to work/ex/pr-60174/sources/try#74092351c05ae61047b2be02024415546595e974/gh/stepchowfun/tagref/Cargo.toml
[INFO] crate stepchowfun/tagref already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+74092351c05ae61047b2be02024415546595e974-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking stepchowfun/tagref against master#e305df1846a6d985315917ae0c81b74af8b4e641 for pr-60174
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60174/worker-6/master#e305df1846a6d985315917ae0c81b74af8b4e641:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60174/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/stepchowfun/tagref:/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" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 083b8b15c9a52cb10af7660b1a61162342529cf9d19494a1fa7086e797a4873f
[INFO] running `"docker" "start" "-a" "083b8b15c9a52cb10af7660b1a61162342529cf9d19494a1fa7086e797a4873f"`
[INFO] [stderr]     Checking same-file v1.0.2
[INFO] [stderr]     Checking term_size v0.3.1
[INFO] [stderr]     Checking globset v0.4.0
[INFO] [stderr]     Checking textwrap v0.9.0
[INFO] [stderr]     Checking walkdir v2.1.4
[INFO] [stderr]     Checking clap v2.31.2
[INFO] [stderr]     Checking ignore v0.4.2
[INFO] [stderr]     Checking tagref v0.0.5 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/walk.rs:16:13
[INFO] [stderr]    |
[INFO] [stderr] 16 |         let mut possible_file = File::open(dir_entry.path());
[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/walk.rs:16:13
[INFO] [stderr]    |
[INFO] [stderr] 16 |         let mut possible_file = File::open(dir_entry.path());
[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]     Finished dev [unoptimized + debuginfo] target(s) in 8.25s
[INFO] running `"docker" "inspect" "083b8b15c9a52cb10af7660b1a61162342529cf9d19494a1fa7086e797a4873f"`
[INFO] running `"docker" "rm" "-f" "083b8b15c9a52cb10af7660b1a61162342529cf9d19494a1fa7086e797a4873f"`
[INFO] [stdout] 083b8b15c9a52cb10af7660b1a61162342529cf9d19494a1fa7086e797a4873f