[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] testing AHPirate/learn_rust_by_example_for_me against try#eafdee2dfae8c2233b74f98b123308be7ccefcc6 for pr-79296
[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-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AHPirate/learn_rust_by_example_for_me on toolchain eafdee2dfae8c2233b74f98b123308be7ccefcc6
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "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-4/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" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6d4157ffec6082c03d6307e6d367c9641d129d3d68963c17a954b566eea78aff
[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" "6d4157ffec6082c03d6307e6d367c9641d129d3d68963c17a954b566eea78aff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6d4157ffec6082c03d6307e6d367c9641d129d3d68963c17a954b566eea78aff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d4157ffec6082c03d6307e6d367c9641d129d3d68963c17a954b566eea78aff", kill_on_drop: false }`
[INFO] [stdout] 6d4157ffec6082c03d6307e6d367c9641d129d3d68963c17a954b566eea78aff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "build" "--frozen" "--message-format=json", 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] 42536e48e8ea44cfb49cf5c853115cccd170d20fd2b473bf38883e1fc72055b2
[INFO] running `Command { std: "docker" "start" "-a" "42536e48e8ea44cfb49cf5c853115cccd170d20fd2b473bf38883e1fc72055b2", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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: 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 1.46s
[INFO] running `Command { std: "docker" "inspect" "42536e48e8ea44cfb49cf5c853115cccd170d20fd2b473bf38883e1fc72055b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42536e48e8ea44cfb49cf5c853115cccd170d20fd2b473bf38883e1fc72055b2", kill_on_drop: false }`
[INFO] [stdout] 42536e48e8ea44cfb49cf5c853115cccd170d20fd2b473bf38883e1fc72055b2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ae8a6e6652563d9033c7163e86210f88e2e780c2e7a9dc8f9db95ea1c61eb5d4
[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" "ae8a6e6652563d9033c7163e86210f88e2e780c2e7a9dc8f9db95ea1c61eb5d4", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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: 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 test [unoptimized + debuginfo] target(s) in 0.88s
[INFO] running `Command { std: "docker" "inspect" "ae8a6e6652563d9033c7163e86210f88e2e780c2e7a9dc8f9db95ea1c61eb5d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae8a6e6652563d9033c7163e86210f88e2e780c2e7a9dc8f9db95ea1c61eb5d4", kill_on_drop: false }`
[INFO] [stdout] ae8a6e6652563d9033c7163e86210f88e2e780c2e7a9dc8f9db95ea1c61eb5d4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f51e33212f01687330bfd08b93697fc8b036fbcdd229b26a471ab7021d1f386a
[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" "f51e33212f01687330bfd08b93697fc8b036fbcdd229b26a471ab7021d1f386a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] 
[INFO] [stderr] warning: enum is never used: `VeryVerboseEnumOfThingsToDoWithNumbers`
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> src/enum_test/enum_dame.rs:41:6
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stderr] 41 | enum VeryVerboseEnumOfThingsToDoWithNumbers {
[INFO] [stdout] 
[INFO] [stderr]    |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `run`
[INFO] [stderr]   --> src/enum_test/enum_dame.rs:47:8
[INFO] [stderr]    |
[INFO] [stderr] 47 |     fn run(&self, x: i32, y: i32) -> i32 {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/print_test/print_format.rs:35:9
[INFO] [stderr]    |
[INFO] [stderr] 35 |         write!(f, "RGB ({},{},{})", self.red, self.green, self.blue);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/example_learn_rust-275d6af76bdca973
[INFO] running `Command { std: "docker" "inspect" "f51e33212f01687330bfd08b93697fc8b036fbcdd229b26a471ab7021d1f386a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f51e33212f01687330bfd08b93697fc8b036fbcdd229b26a471ab7021d1f386a", kill_on_drop: false }`
[INFO] [stdout] f51e33212f01687330bfd08b93697fc8b036fbcdd229b26a471ab7021d1f386a