[INFO] cloning repository https://github.com/OrlovBohdan/_10_Generics_and_Traits_10_5_Advanced_Traits
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/OrlovBohdan/_10_Generics_and_Traits_10_5_Advanced_Traits" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOrlovBohdan%2F_10_Generics_and_Traits_10_5_Advanced_Traits", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOrlovBohdan%2F_10_Generics_and_Traits_10_5_Advanced_Traits'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 012b2ab300dfd27d6ff720da61d4ca3da5184b4e
[INFO] checking OrlovBohdan/_10_Generics_and_Traits_10_5_Advanced_Traits against try#a7b168ac4977e8e93a43448b44847adaa305d5a9 for pr-150557
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOrlovBohdan%2F_10_Generics_and_Traits_10_5_Advanced_Traits" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/OrlovBohdan/_10_Generics_and_Traits_10_5_Advanced_Traits
[INFO] finished tweaking git repo https://github.com/OrlovBohdan/_10_Generics_and_Traits_10_5_Advanced_Traits
[INFO] tweaked toml for git repo https://github.com/OrlovBohdan/_10_Generics_and_Traits_10_5_Advanced_Traits written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/OrlovBohdan/_10_Generics_and_Traits_10_5_Advanced_Traits on toolchain a7b168ac4977e8e93a43448b44847adaa305d5a9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a7b168ac4977e8e93a43448b44847adaa305d5a9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/OrlovBohdan/_10_Generics_and_Traits_10_5_Advanced_Traits 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" "+a7b168ac4977e8e93a43448b44847adaa305d5a9" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking OrlovBohdan/_10_Generics_and_Traits_10_5_Advanced_Traits against try#a7b168ac4977e8e93a43448b44847adaa305d5a9 for pr-150557
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOrlovBohdan%2F_10_Generics_and_Traits_10_5_Advanced_Traits" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/OrlovBohdan/_10_Generics_and_Traits_10_5_Advanced_Traits
[INFO] finished tweaking git repo https://github.com/OrlovBohdan/_10_Generics_and_Traits_10_5_Advanced_Traits
[INFO] tweaked toml for git repo https://github.com/OrlovBohdan/_10_Generics_and_Traits_10_5_Advanced_Traits written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/OrlovBohdan/_10_Generics_and_Traits_10_5_Advanced_Traits on toolchain a7b168ac4977e8e93a43448b44847adaa305d5a9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a7b168ac4977e8e93a43448b44847adaa305d5a9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/OrlovBohdan/_10_Generics_and_Traits_10_5_Advanced_Traits 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" "+a7b168ac4977e8e93a43448b44847adaa305d5a9" "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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+a7b168ac4977e8e93a43448b44847adaa305d5a9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cd9faf22a768cf9ec19312370a8f6292d4fa631ee4eb5e7a325559a0b701d277
[INFO] running `Command { std: "docker" "start" "-a" "cd9faf22a768cf9ec19312370a8f6292d4fa631ee4eb5e7a325559a0b701d277", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cd9faf22a768cf9ec19312370a8f6292d4fa631ee4eb5e7a325559a0b701d277", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd9faf22a768cf9ec19312370a8f6292d4fa631ee4eb5e7a325559a0b701d277", kill_on_drop: false }`
[INFO] [stdout] cd9faf22a768cf9ec19312370a8f6292d4fa631ee4eb5e7a325559a0b701d277
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+a7b168ac4977e8e93a43448b44847adaa305d5a9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b202d017c11e76539258d358300e5ca45256e4930a186e24f2146295012855dd
[INFO] running `Command { std: "docker" "start" "-a" "b202d017c11e76539258d358300e5ca45256e4930a186e24f2146295012855dd", kill_on_drop: false }`
[INFO] [stderr]     Checking _10_Generics_and_Traits_10_5_Advanced_Traits v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Container` is never constructed
[INFO] [stdout]   --> src/task1.rs:64:8
[INFO] [stdout]    |
[INFO] [stdout] 64 | struct Container(i32, i32);
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Contains` is never used
[INFO] [stdout]   --> src/task1.rs:67:7
[INFO] [stdout]    |
[INFO] [stdout] 67 | trait Contains {
[INFO] [stdout]    |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `difference` is never used
[INFO] [stdout]   --> src/task1.rs:90:4
[INFO] [stdout]    |
[INFO] [stdout] 90 | fn difference<C: Contains>(container: &C) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]   --> src/task2.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | struct Point<T> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Pilot` is never used
[INFO] [stdout]   --> src/task3.rs:58:7
[INFO] [stdout]    |
[INFO] [stdout] 58 | trait Pilot {
[INFO] [stdout]    |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Wizard` is never used
[INFO] [stdout]   --> src/task3.rs:62:7
[INFO] [stdout]    |
[INFO] [stdout] 62 | trait Wizard {
[INFO] [stdout]    |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Human` is never constructed
[INFO] [stdout]   --> src/task3.rs:66:8
[INFO] [stdout]    |
[INFO] [stdout] 66 | struct Human;
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `fly` is never used
[INFO] [stdout]   --> src/task3.rs:81:8
[INFO] [stdout]    |
[INFO] [stdout] 80 | impl Human {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] 81 |     fn fly(&self) -> String {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Person` is never used
[INFO] [stdout]   --> src/task4.rs:70:7
[INFO] [stdout]    |
[INFO] [stdout] 70 | trait Person {
[INFO] [stdout]    |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Student` is never used
[INFO] [stdout]   --> src/task4.rs:76:7
[INFO] [stdout]    |
[INFO] [stdout] 76 | trait Student: Person {
[INFO] [stdout]    |       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Programmer` is never used
[INFO] [stdout]   --> src/task4.rs:80:7
[INFO] [stdout]    |
[INFO] [stdout] 80 | trait Programmer {
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `CompSciStudent` is never used
[INFO] [stdout]   --> src/task4.rs:86:7
[INFO] [stdout]    |
[INFO] [stdout] 86 | trait CompSciStudent: Programmer + Student {
[INFO] [stdout]    |       ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `comp_sci_student_greeting` is never used
[INFO] [stdout]   --> src/task4.rs:90:4
[INFO] [stdout]    |
[INFO] [stdout] 90 | fn comp_sci_student_greeting(student: &dyn CompSciStudent) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CSStudent` is never constructed
[INFO] [stdout]    --> src/task4.rs:100:8
[INFO] [stdout]     |
[INFO] [stdout] 100 | struct CSStudent {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Pretty` is never constructed
[INFO] [stdout]   --> src/task5.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | struct Pretty(String);
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] running `Command { std: "docker" "inspect" "b202d017c11e76539258d358300e5ca45256e4930a186e24f2146295012855dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b202d017c11e76539258d358300e5ca45256e4930a186e24f2146295012855dd", kill_on_drop: false }`
[INFO] [stdout] b202d017c11e76539258d358300e5ca45256e4930a186e24f2146295012855dd