[INFO] updating cached repository McGiver-/rust_practice
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/McGiver-/rust_practice
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/McGiver-/rust_practice" "work/ex/pr-61753/sources/master#8e948df707ea8a3c88c65bf2ffdcb2f1cf5491be/gh/McGiver-/rust_practice"`
[INFO] [stderr] Cloning into 'work/ex/pr-61753/sources/master#8e948df707ea8a3c88c65bf2ffdcb2f1cf5491be/gh/McGiver-/rust_practice'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/McGiver-/rust_practice" "work/ex/pr-61753/sources/try#af22dfc7f56a5057c6b6120a65c74e7b6c1530af/gh/McGiver-/rust_practice"`
[INFO] [stderr] Cloning into 'work/ex/pr-61753/sources/try#af22dfc7f56a5057c6b6120a65c74e7b6c1530af/gh/McGiver-/rust_practice'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c8a73d658f33fc5ce21503726c9815dba08bf932
[INFO] sha for GitHub repo McGiver-/rust_practice: c8a73d658f33fc5ce21503726c9815dba08bf932
[INFO] validating manifest of McGiver-/rust_practice on toolchain master#8e948df707ea8a3c88c65bf2ffdcb2f1cf5491be
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8e948df707ea8a3c88c65bf2ffdcb2f1cf5491be-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of McGiver-/rust_practice on toolchain try#af22dfc7f56a5057c6b6120a65c74e7b6c1530af
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+af22dfc7f56a5057c6b6120a65c74e7b6c1530af-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing McGiver-/rust_practice
[INFO] finished frobbing McGiver-/rust_practice
[INFO] frobbed toml for McGiver-/rust_practice written to work/ex/pr-61753/sources/master#8e948df707ea8a3c88c65bf2ffdcb2f1cf5491be/gh/McGiver-/rust_practice/Cargo.toml
[INFO] started frobbing McGiver-/rust_practice
[INFO] finished frobbing McGiver-/rust_practice
[INFO] frobbed toml for McGiver-/rust_practice written to work/ex/pr-61753/sources/try#af22dfc7f56a5057c6b6120a65c74e7b6c1530af/gh/McGiver-/rust_practice/Cargo.toml
[INFO] crate McGiver-/rust_practice already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8e948df707ea8a3c88c65bf2ffdcb2f1cf5491be-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+af22dfc7f56a5057c6b6120a65c74e7b6c1530af-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking McGiver-/rust_practice against try#af22dfc7f56a5057c6b6120a65c74e7b6c1530af for pr-61753
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61753/worker-5/try#af22dfc7f56a5057c6b6120a65c74e7b6c1530af:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61753/sources/try#af22dfc7f56a5057c6b6120a65c74e7b6c1530af/gh/McGiver-/rust_practice:/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" "+af22dfc7f56a5057c6b6120a65c74e7b6c1530af-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 81fd7643dc7b61db60bcf062866bd9937eb3723d87b41c1d50df0657136e10df
[INFO] running `"docker" "start" "-a" "81fd7643dc7b61db60bcf062866bd9937eb3723d87b41c1d50df0657136e10df"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]     Checking validate_palindrome v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `v`
[INFO] [stderr]   --> src/main.rs:31:28
[INFO] [stderr]    |
[INFO] [stderr] 31 | pub fn bracket_balanced<T>(v: &[T],map: HashMap<T,T>) -> bool where
[INFO] [stderr]    |                            ^ help: consider prefixing with an underscore: `_v`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `map`
[INFO] [stderr]   --> src/main.rs:31:36
[INFO] [stderr]    |
[INFO] [stderr] 31 | pub fn bracket_balanced<T>(v: &[T],map: HashMap<T,T>) -> bool where
[INFO] [stderr]    |                                    ^^^ help: consider prefixing with an underscore: `_map`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `v`
[INFO] [stderr]   --> src/main.rs:31:28
[INFO] [stderr]    |
[INFO] [stderr] 31 | pub fn bracket_balanced<T>(v: &[T],map: HashMap<T,T>) -> bool where
[INFO] [stderr]    |                            ^ help: consider prefixing with an underscore: `_v`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `map`
[INFO] [stderr]   --> src/main.rs:31:36
[INFO] [stderr]    |
[INFO] [stderr] 31 | pub fn bracket_balanced<T>(v: &[T],map: HashMap<T,T>) -> bool where
[INFO] [stderr]    |                                    ^^^ help: consider prefixing with an underscore: `_map`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.59s
[INFO] running `"docker" "inspect" "81fd7643dc7b61db60bcf062866bd9937eb3723d87b41c1d50df0657136e10df"`
[INFO] running `"docker" "rm" "-f" "81fd7643dc7b61db60bcf062866bd9937eb3723d87b41c1d50df0657136e10df"`
[INFO] [stdout] 81fd7643dc7b61db60bcf062866bd9937eb3723d87b41c1d50df0657136e10df