[INFO] cloning repository https://github.com/bpk-t/rust_practice
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bpk-t/rust_practice" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbpk-t%2Frust_practice", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbpk-t%2Frust_practice'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1df7873e9a168056f85a8118ad00cb22173bc000
[INFO] checking bpk-t/rust_practice against try#3e22d1f9053c0fc87629b3c6d5d9567856368e5d for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbpk-t%2Frust_practice" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bpk-t/rust_practice on toolchain 3e22d1f9053c0fc87629b3c6d5d9567856368e5d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bpk-t/rust_practice
[INFO] finished tweaking git repo https://github.com/bpk-t/rust_practice
[INFO] tweaked toml for git repo https://github.com/bpk-t/rust_practice written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/bpk-t/rust_practice already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 12da6bebed98605b5ca70e6c5e2fb7a8586349ddfcc313b5c75eefc37bb4a56b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "12da6bebed98605b5ca70e6c5e2fb7a8586349ddfcc313b5c75eefc37bb4a56b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "12da6bebed98605b5ca70e6c5e2fb7a8586349ddfcc313b5c75eefc37bb4a56b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12da6bebed98605b5ca70e6c5e2fb7a8586349ddfcc313b5c75eefc37bb4a56b", kill_on_drop: false }`
[INFO] [stdout] 12da6bebed98605b5ca70e6c5e2fb7a8586349ddfcc313b5c75eefc37bb4a56b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 070bb3bfb1183020c67309030aa395754dcc5241bbecce82b4c05b9ad036251f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "070bb3bfb1183020c67309030aa395754dcc5241bbecce82b4c05b9ad036251f", kill_on_drop: false }`
[INFO] [stderr]     Checking rust_practice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0601]: `main` function not found in crate `lang_spec`
[INFO] [stdout]    --> src/bin/lang_spec.rs:2:1
[INFO] [stdout]     |
[INFO] [stdout] 2   | / #[cfg(test)]
[INFO] [stdout] 3   | | mod lang_spec {
[INFO] [stdout] 4   | |
[INFO] [stdout] 5   | |     #[test]
[INFO] [stdout] ...   |
[INFO] [stdout] 119 | |     }
[INFO] [stdout] 120 | | }
[INFO] [stdout]     | |_^ consider adding a `main` function to `src/bin/lang_spec.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_practice`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused variable: `aa`
[INFO] [stdout]   --> src/bin/lang_spec.rs:74:13
[INFO] [stdout]    |
[INFO] [stdout] 74 |         let aa = A{x:(100, 200)};
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_aa`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> src/bin/lang_spec.rs:110:13
[INFO] [stdout]     |
[INFO] [stdout] 110 |         let b = Message::B(100);
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]    --> src/bin/lang_spec.rs:111:13
[INFO] [stdout]     |
[INFO] [stdout] 111 |         let c = Message::C{x:100,y:100};
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/bin/lang_spec.rs:114:13
[INFO] [stdout]     |
[INFO] [stdout] 114 |         let x = match a {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/bin/lang_spec.rs:117:31
[INFO] [stdout]     |
[INFO] [stdout] 117 |             Message::C{x:x, y:y} => x,
[INFO] [stdout]     |                               ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `x`
[INFO] [stdout]   --> src/bin/lang_spec.rs:71:13
[INFO] [stdout]    |
[INFO] [stdout] 71 |             x: (i32, i32)
[INFO] [stdout]    |             ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the `x:` in this pattern is redundant
[INFO] [stdout]    --> src/bin/lang_spec.rs:117:24
[INFO] [stdout]     |
[INFO] [stdout] 117 |             Message::C{x:x, y:y} => x,
[INFO] [stdout]     |                        ^^^ help: use shorthand field pattern: `x`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_shorthand_field_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the `y:` in this pattern is redundant
[INFO] [stdout]    --> src/bin/lang_spec.rs:117:29
[INFO] [stdout]     |
[INFO] [stdout] 117 |             Message::C{x:x, y:y} => x,
[INFO] [stdout]     |                             ^^^ help: use shorthand field pattern: `y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "070bb3bfb1183020c67309030aa395754dcc5241bbecce82b4c05b9ad036251f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "070bb3bfb1183020c67309030aa395754dcc5241bbecce82b4c05b9ad036251f", kill_on_drop: false }`
[INFO] [stdout] 070bb3bfb1183020c67309030aa395754dcc5241bbecce82b4c05b9ad036251f