[INFO] cloning repository https://github.com/AHPirate/learn_rust_by_example_for_me
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AHPirate/learn_rust_by_example_for_me" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAHPirate%2Flearn_rust_by_example_for_me", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAHPirate%2Flearn_rust_by_example_for_me'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2628c07001af346c0d4f74e87a07a3acef609c87
[INFO] checking AHPirate/learn_rust_by_example_for_me against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAHPirate%2Flearn_rust_by_example_for_me" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AHPirate/learn_rust_by_example_for_me on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/AHPirate/learn_rust_by_example_for_me
[INFO] finished tweaking git repo https://github.com/AHPirate/learn_rust_by_example_for_me
[INFO] tweaked toml for git repo https://github.com/AHPirate/learn_rust_by_example_for_me written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/AHPirate/learn_rust_by_example_for_me already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 43c05b52279ec6af75baad5e210ae8dd6015473e568eba02a54e2b2440e42dac
[INFO] running `Command { std: "docker" "start" "-a" "43c05b52279ec6af75baad5e210ae8dd6015473e568eba02a54e2b2440e42dac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "43c05b52279ec6af75baad5e210ae8dd6015473e568eba02a54e2b2440e42dac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43c05b52279ec6af75baad5e210ae8dd6015473e568eba02a54e2b2440e42dac", kill_on_drop: false }`
[INFO] [stdout] 43c05b52279ec6af75baad5e210ae8dd6015473e568eba02a54e2b2440e42dac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 65341810f12956d02949c3e62fb1ab9336bde858b719ee2d7baa02e9988405e5
[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" "65341810f12956d02949c3e62fb1ab9336bde858b719ee2d7baa02e9988405e5", kill_on_drop: false }`
[INFO] [stderr]     Checking example_learn_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: enum is never used: `VeryVerboseEnumOfThingsToDoWithNumbers`
[INFO] [stdout]   --> src/enum_test/enum_dame.rs:41:6
[INFO] [stdout]    |
[INFO] [stdout] 41 | enum VeryVerboseEnumOfThingsToDoWithNumbers {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `run`
[INFO] [stdout]   --> src/enum_test/enum_dame.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 47 |     fn run(&self, x: i32, y: i32) -> i32 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `VeryVerboseEnumOfThingsToDoWithNumbers`
[INFO] [stdout]   --> src/enum_test/enum_dame.rs:41:6
[INFO] [stdout]    |
[INFO] [stdout] 41 | enum VeryVerboseEnumOfThingsToDoWithNumbers {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `run`
[INFO] [stdout]   --> src/enum_test/enum_dame.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 47 |     fn run(&self, x: i32, y: i32) -> i32 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/print_test/print_format.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |         write!(f, "RGB ({},{},{})", self.red, self.green, self.blue);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/print_test/print_format.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |         write!(f, "RGB ({},{},{})", self.red, self.green, self.blue);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.74s
[INFO] running `Command { std: "docker" "inspect" "65341810f12956d02949c3e62fb1ab9336bde858b719ee2d7baa02e9988405e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65341810f12956d02949c3e62fb1ab9336bde858b719ee2d7baa02e9988405e5", kill_on_drop: false }`
[INFO] [stdout] 65341810f12956d02949c3e62fb1ab9336bde858b719ee2d7baa02e9988405e5