[INFO] cloning repository https://github.com/nunzioono/rust_learning
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nunzioono/rust_learning" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnunzioono%2Frust_learning", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnunzioono%2Frust_learning'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] acd95cbabf96d3fa30dc0db8e56f4cdce50166af
[INFO] checking nunzioono/rust_learning against try#f16624c7fb52ccf15cd304a9728caf1ef4b9c0d2 for pr-156992
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnunzioono%2Frust_learning" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/nunzioono/rust_learning
[INFO] finished tweaking git repo https://github.com/nunzioono/rust_learning
[INFO] tweaked toml for git repo https://github.com/nunzioono/rust_learning written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/nunzioono/rust_learning on toolchain f16624c7fb52ccf15cd304a9728caf1ef4b9c0d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f16624c7fb52ccf15cd304a9728caf1ef4b9c0d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/nunzioono/rust_learning already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f16624c7fb52ccf15cd304a9728caf1ef4b9c0d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+f16624c7fb52ccf15cd304a9728caf1ef4b9c0d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d0c7695b8e1f35611e3a8ec281c2971a01ff0ba9a9575be94dc3d8ba7999c2a1
[INFO] running `Command { std: "docker" "start" "-a" "d0c7695b8e1f35611e3a8ec281c2971a01ff0ba9a9575be94dc3d8ba7999c2a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d0c7695b8e1f35611e3a8ec281c2971a01ff0ba9a9575be94dc3d8ba7999c2a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0c7695b8e1f35611e3a8ec281c2971a01ff0ba9a9575be94dc3d8ba7999c2a1", kill_on_drop: false }`
[INFO] [stdout] d0c7695b8e1f35611e3a8ec281c2971a01ff0ba9a9575be94dc3d8ba7999c2a1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+f16624c7fb52ccf15cd304a9728caf1ef4b9c0d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c69098f714947b596f6ac08d8df9f4474a909fa85b20638671b0f546ab0b9a35
[INFO] running `Command { std: "docker" "start" "-a" "c69098f714947b596f6ac08d8df9f4474a909fa85b20638671b0f546ab0b9a35", kill_on_drop: false }`
[INFO] [stderr]     Checking esercizi_malnati v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0601]: `main` function not found in crate `2_language`
[INFO] [stdout]    --> src/bin/2-language.rs:226:24
[INFO] [stdout]     |
[INFO] [stdout] 226 | //   lower_snake_case.
[INFO] [stdout]     |                       ^ consider adding a `main` function to `src/bin/2-language.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stdout] error[E0601]: `main` function not found in crate `0_allocation`
[INFO] [stdout]    --> src/bin/0-allocation.rs:138:40
[INFO] [stdout]     |
[INFO] [stdout] 138 | //  referencing memory in a risky way.
[INFO] [stdout]     |                                       ^ consider adding a `main` function to `src/bin/0-allocation.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stdout] error[E0601]: `main` function not found in crate `14_asynchronous_programming`
[INFO] [stdout]    --> src/bin/14-asynchronous_programming.rs:208:4
[INFO] [stdout]     |
[INFO] [stdout] 208 | //
[INFO] [stdout]     |   ^ consider adding a `main` function to `src/bin/14-asynchronous_programming.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `esercizi_malnati` (bin "2-language") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `esercizi_malnati` (bin "14-asynchronous_programming") due to 1 previous error
[INFO] [stdout] error: expected identifier, found `<`
[INFO] [stdout]   --> src/bin/6-lifetimes.rs:69:7
[INFO] [stdout]    |
[INFO] [stdout] 69 | struct<'a, 'b> Point {
[INFO] [stdout]    |       ^ expected identifier
[INFO] [stdout]    |
[INFO] [stdout] help: place the generic parameter name after the struct name
[INFO] [stdout]    |
[INFO] [stdout] 69 - struct<'a, 'b> Point {
[INFO] [stdout] 69 + struct Point<'a, 'b> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `esercizi_malnati` (bin "0-allocation") due to 1 previous error
[INFO] [stdout] error[E0601]: `main` function not found in crate `5_traits_generics`
[INFO] [stdout]    --> src/bin/5-traits_generics.rs:170:40
[INFO] [stdout]     |
[INFO] [stdout] 170 | // to be subtraits of each other tho).
[INFO] [stdout]     |                                       ^ consider adding a `main` function to `src/bin/5-traits_generics.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0601]: `main` function not found in crate `1_rust`
[INFO] [stdout]    --> src/bin/1-rust.rs:232:2
[INFO] [stdout]     |
[INFO] [stdout] 232 |
[INFO] [stdout]     | ^ consider adding a `main` function to `src/bin/1-rust.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stdout] error[E0601]: `main` function not found in crate `4_composite_types`
[INFO] [stdout]    --> src/bin/4-composite_types.rs:191:96
[INFO] [stdout]     |
[INFO] [stdout] 191 | // Litterally unions have same utility of enums while enum provide modern and better features.
[INFO] [stdout]     |                                                                                               ^ consider adding a `main` function to `src/bin/4-composite_types.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `esercizi_malnati` (bin "6-lifetimes" test) due to 1 previous error
[INFO] [stderr] error: could not compile `esercizi_malnati` (bin "5-traits_generics") due to 1 previous error
[INFO] [stderr] error: could not compile `esercizi_malnati` (bin "1-rust") due to 1 previous error
[INFO] [stderr] error: could not compile `esercizi_malnati` (bin "4-composite_types") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "c69098f714947b596f6ac08d8df9f4474a909fa85b20638671b0f546ab0b9a35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c69098f714947b596f6ac08d8df9f4474a909fa85b20638671b0f546ab0b9a35", kill_on_drop: false }`
[INFO] [stdout] c69098f714947b596f6ac08d8df9f4474a909fa85b20638671b0f546ab0b9a35