[INFO] updating cached repository ZapAnton/rust-analyzer
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ZapAnton/rust-analyzer
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ZapAnton/rust-analyzer" "work/ex/pr-60261/sources/master#1891bfa80364eead426517c68de6947b7692e2de/gh/ZapAnton/rust-analyzer"`
[INFO] [stderr] Cloning into 'work/ex/pr-60261/sources/master#1891bfa80364eead426517c68de6947b7692e2de/gh/ZapAnton/rust-analyzer'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ZapAnton/rust-analyzer" "work/ex/pr-60261/sources/try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a/gh/ZapAnton/rust-analyzer"`
[INFO] [stderr] Cloning into 'work/ex/pr-60261/sources/try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a/gh/ZapAnton/rust-analyzer'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 945f61d147dedcad8eb2239303f781a88d6436c7
[INFO] sha for GitHub repo ZapAnton/rust-analyzer: 945f61d147dedcad8eb2239303f781a88d6436c7
[INFO] validating manifest of ZapAnton/rust-analyzer on toolchain master#1891bfa80364eead426517c68de6947b7692e2de
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1891bfa80364eead426517c68de6947b7692e2de-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ZapAnton/rust-analyzer on toolchain try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+bfdcf6db3afcce5fe4013023cfa8ba359c5d527a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ZapAnton/rust-analyzer
[INFO] finished frobbing ZapAnton/rust-analyzer
[INFO] frobbed toml for ZapAnton/rust-analyzer written to work/ex/pr-60261/sources/master#1891bfa80364eead426517c68de6947b7692e2de/gh/ZapAnton/rust-analyzer/Cargo.toml
[INFO] started frobbing ZapAnton/rust-analyzer
[INFO] finished frobbing ZapAnton/rust-analyzer
[INFO] frobbed toml for ZapAnton/rust-analyzer written to work/ex/pr-60261/sources/try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a/gh/ZapAnton/rust-analyzer/Cargo.toml
[INFO] crate ZapAnton/rust-analyzer already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1891bfa80364eead426517c68de6947b7692e2de-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+bfdcf6db3afcce5fe4013023cfa8ba359c5d527a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking ZapAnton/rust-analyzer against try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a for pr-60261
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60261/worker-6/try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60261/sources/try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a/gh/ZapAnton/rust-analyzer:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/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" "+bfdcf6db3afcce5fe4013023cfa8ba359c5d527a-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 7635d60d9a9ee5da6b09a524a89ce75d3e4fa689b24a53d5a093b15e8569cfca
[INFO] running `"docker" "start" "-a" "7635d60d9a9ee5da6b09a524a89ce75d3e4fa689b24a53d5a093b15e8569cfca"`
[INFO] [stderr]    Compiling libc v0.2.50
[INFO] [stderr]    Compiling syn v0.15.30
[INFO] [stderr]     Checking backtrace-sys v0.1.28
[INFO] [stderr]     Checking backtrace v0.3.14
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking rust-analyzer v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `exercise_type`
[INFO] [stderr]   --> src/lib.rs:58:34
[INFO] [stderr]    |
[INFO] [stderr] 58 | fn run_analysis(dir_path: &Path, exercise_type: ExerciseType) -> AnalyzerResult<()> {
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_exercise_type`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `exercise_type`
[INFO] [stderr]   --> src/lib.rs:58:34
[INFO] [stderr]    |
[INFO] [stderr] 58 | fn run_analysis(dir_path: &Path, exercise_type: ExerciseType) -> AnalyzerResult<()> {
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_exercise_type`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.17s
[INFO] running `"docker" "inspect" "7635d60d9a9ee5da6b09a524a89ce75d3e4fa689b24a53d5a093b15e8569cfca"`
[INFO] running `"docker" "rm" "-f" "7635d60d9a9ee5da6b09a524a89ce75d3e4fa689b24a53d5a093b15e8569cfca"`
[INFO] [stdout] 7635d60d9a9ee5da6b09a524a89ce75d3e4fa689b24a53d5a093b15e8569cfca