[INFO] updating cached repository bpk-t/rust_practice
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/bpk-t/rust_practice
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/bpk-t/rust_practice" "work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/bpk-t/rust_practice"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/bpk-t/rust_practice'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/bpk-t/rust_practice" "work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/bpk-t/rust_practice"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/bpk-t/rust_practice'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1df7873e9a168056f85a8118ad00cb22173bc000
[INFO] sha for GitHub repo bpk-t/rust_practice: 1df7873e9a168056f85a8118ad00cb22173bc000
[INFO] validating manifest of bpk-t/rust_practice on toolchain master#c43d03a19f326f4a323569328cc501e86eb6d22e
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of bpk-t/rust_practice on toolchain try#75eff020d0923c035c2fe220db4a0465cd847048
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing bpk-t/rust_practice
[INFO] finished frobbing bpk-t/rust_practice
[INFO] frobbed toml for bpk-t/rust_practice written to work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/bpk-t/rust_practice/Cargo.toml
[INFO] started frobbing bpk-t/rust_practice
[INFO] finished frobbing bpk-t/rust_practice
[INFO] frobbed toml for bpk-t/rust_practice written to work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/bpk-t/rust_practice/Cargo.toml
[INFO] crate bpk-t/rust_practice already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking bpk-t/rust_practice against master#c43d03a19f326f4a323569328cc501e86eb6d22e for pr-63565
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63565/worker-6/master#c43d03a19f326f4a323569328cc501e86eb6d22e:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/bpk-t/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" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] bc69790828f6ab72d4e408064bcc7de1f4807de12206e297d1673e9f61ee0e8b
[INFO] running `"docker" "start" "-a" "bc69790828f6ab72d4e408064bcc7de1f4807de12206e297d1673e9f61ee0e8b"`
[INFO] [stderr]     Checking rust_practice v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0601]: `main` function not found in crate `lang_spec`
[INFO] [stderr]   |
[INFO] [stderr]   = note: consider adding a `main` function to `src/bin/lang_spec.rs`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0601`.
[INFO] [stderr] error: Could not compile `rust_practice`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: unused variable: `aa`
[INFO] [stderr]   --> src/bin/lang_spec.rs:74:13
[INFO] [stderr]    |
[INFO] [stderr] 74 |         let aa = A{x:(100, 200)};
[INFO] [stderr]    |             ^^ help: consider prefixing with an underscore: `_aa`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]    --> src/bin/lang_spec.rs:110:13
[INFO] [stderr]     |
[INFO] [stderr] 110 |         let b = Message::B(100);
[INFO] [stderr]     |             ^ help: consider prefixing with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]    --> src/bin/lang_spec.rs:111:13
[INFO] [stderr]     |
[INFO] [stderr] 111 |         let c = Message::C{x:100,y:100};
[INFO] [stderr]     |             ^ help: consider prefixing with an underscore: `_c`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/bin/lang_spec.rs:114:13
[INFO] [stderr]     |
[INFO] [stderr] 114 |         let x = match a {
[INFO] [stderr]     |             ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]    --> src/bin/lang_spec.rs:117:31
[INFO] [stderr]     |
[INFO] [stderr] 117 |             Message::C{x:x, y:y} => x,
[INFO] [stderr]     |                               ^ help: consider prefixing with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `x`
[INFO] [stderr]   --> src/bin/lang_spec.rs:71:13
[INFO] [stderr]    |
[INFO] [stderr] 71 |             x: (i32, i32)
[INFO] [stderr]    |             ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the `x:` in this pattern is redundant
[INFO] [stderr]    --> src/bin/lang_spec.rs:117:24
[INFO] [stderr]     |
[INFO] [stderr] 117 |             Message::C{x:x, y:y} => x,
[INFO] [stderr]     |                        --^
[INFO] [stderr]     |                        |
[INFO] [stderr]     |                        help: remove this
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_shorthand_field_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the `y:` in this pattern is redundant
[INFO] [stderr]    --> src/bin/lang_spec.rs:117:29
[INFO] [stderr]     |
[INFO] [stderr] 117 |             Message::C{x:x, y:y} => x,
[INFO] [stderr]     |                             --^
[INFO] [stderr]     |                             |
[INFO] [stderr]     |                             help: remove this
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "bc69790828f6ab72d4e408064bcc7de1f4807de12206e297d1673e9f61ee0e8b"`
[INFO] running `"docker" "rm" "-f" "bc69790828f6ab72d4e408064bcc7de1f4807de12206e297d1673e9f61ee0e8b"`
[INFO] [stdout] bc69790828f6ab72d4e408064bcc7de1f4807de12206e297d1673e9f61ee0e8b