[INFO] updating cached repository skk/git_submodules
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/skk/git_submodules
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/skk/git_submodules" "work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/skk/git_submodules"`
[INFO] [stderr] Cloning into 'work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/skk/git_submodules'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/skk/git_submodules" "work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/skk/git_submodules"`
[INFO] [stderr] Cloning into 'work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/skk/git_submodules'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 322256bc27880b3007089fce9b68e67ef3bcaceb
[INFO] sha for GitHub repo skk/git_submodules: 322256bc27880b3007089fce9b68e67ef3bcaceb
[INFO] validating manifest of skk/git_submodules on toolchain master#39401465da4ce27aeeb2c2a26133ac35c63aa515
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of skk/git_submodules on toolchain try#f45cc3094ee337acd688771b9234318046b0572d
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing skk/git_submodules
[INFO] finished frobbing skk/git_submodules
[INFO] frobbed toml for skk/git_submodules written to work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/skk/git_submodules/Cargo.toml
[INFO] started frobbing skk/git_submodules
[INFO] finished frobbing skk/git_submodules
[INFO] frobbed toml for skk/git_submodules written to work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/skk/git_submodules/Cargo.toml
[INFO] crate skk/git_submodules already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking skk/git_submodules against master#39401465da4ce27aeeb2c2a26133ac35c63aa515 for pr-60914
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60914/worker-4/master#39401465da4ce27aeeb2c2a26133ac35c63aa515:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/skk/git_submodules:/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" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 2724dbf2ec9ed9e31aed520964c13959afa5bc0046154a88dc076d2bc27bb892
[INFO] running `"docker" "start" "-a" "2724dbf2ec9ed9e31aed520964c13959afa5bc0046154a88dc076d2bc27bb892"`
[INFO] [stderr]    Compiling serde v1.0.62
[INFO] [stderr]    Compiling cmake v0.1.31
[INFO] [stderr]    Compiling libz-sys v1.0.18
[INFO] [stderr]    Compiling openssl-sys v0.9.31
[INFO] [stderr]    Compiling curl-sys v0.4.5
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking regex-syntax v0.6.0
[INFO] [stderr]    Compiling serde_derive v1.0.62
[INFO] [stderr]     Checking aho-corasick v0.6.4
[INFO] [stderr]    Compiling libssh2-sys v0.2.7
[INFO] [stderr]    Compiling libgit2-sys v0.7.1
[INFO] [stderr]     Checking regex v1.0.0
[INFO] [stderr]     Checking serde_json v1.0.18
[INFO] [stderr]     Checking git2 v0.7.1
[INFO] [stderr]     Checking git_submodules v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/app.rs:78:25
[INFO] [stderr]    |
[INFO] [stderr] 78 |                     let mut path = name.clone();
[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: field is never used: `repo`
[INFO] [stderr]   --> src/app.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     repo: Repository,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/app.rs:78:25
[INFO] [stderr]    |
[INFO] [stderr] 78 |                     let mut path = name.clone();
[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: field is never used: `repo`
[INFO] [stderr]   --> src/app.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     repo: Repository,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 03s
[INFO] running `"docker" "inspect" "2724dbf2ec9ed9e31aed520964c13959afa5bc0046154a88dc076d2bc27bb892"`
[INFO] running `"docker" "rm" "-f" "2724dbf2ec9ed9e31aed520964c13959afa5bc0046154a88dc076d2bc27bb892"`
[INFO] [stdout] 2724dbf2ec9ed9e31aed520964c13959afa5bc0046154a88dc076d2bc27bb892