[INFO] cloning repository https://github.com/Cristiandi/course-rust-in-motion
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Cristiandi/course-rust-in-motion" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCristiandi%2Fcourse-rust-in-motion", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCristiandi%2Fcourse-rust-in-motion'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 812eadf4584a270a9207a8e3797e5afc88d2993b
[INFO] testing Cristiandi/course-rust-in-motion against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCristiandi%2Fcourse-rust-in-motion" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Cristiandi/course-rust-in-motion on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Cristiandi/course-rust-in-motion
[INFO] finished tweaking git repo https://github.com/Cristiandi/course-rust-in-motion
[INFO] tweaked toml for git repo https://github.com/Cristiandi/course-rust-in-motion written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/Cristiandi/course-rust-in-motion already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8da5e1894ebb73b11980899189ab986a230b76496ead46eada5a07c619bad674
[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" "8da5e1894ebb73b11980899189ab986a230b76496ead46eada5a07c619bad674", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8da5e1894ebb73b11980899189ab986a230b76496ead46eada5a07c619bad674", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8da5e1894ebb73b11980899189ab986a230b76496ead46eada5a07c619bad674", kill_on_drop: false }`
[INFO] [stdout] 8da5e1894ebb73b11980899189ab986a230b76496ead46eada5a07c619bad674
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9213adc05907a199f8030c5cf2c08d75cb39837754dbe82861385d4510e9e90d
[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" "9213adc05907a199f8030c5cf2c08d75cb39837754dbe82861385d4510e9e90d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]    Compiling backtrace-sys v0.1.37
[INFO] [stderr]    Compiling backtrace v0.3.18
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling error-chain v0.12.0
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]    Compiling myproject v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `Center`
[INFO] [stdout]  --> src/unit-1/09_methods.rs:3:3
[INFO] [stdout]   |
[INFO] [stdout] 3 |   Center,
[INFO] [stdout]   |   ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Defense`
[INFO] [stdout]  --> src/unit-1/09_methods.rs:5:3
[INFO] [stdout]   |
[INFO] [stdout] 5 |   Defense,
[INFO] [stdout]   |   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Goalie`
[INFO] [stdout]  --> src/unit-1/09_methods.rs:6:3
[INFO] [stdout]   |
[INFO] [stdout] 6 |   Goalie,
[INFO] [stdout]   |   ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `number`
[INFO] [stdout]   --> src/unit-1/09_methods.rs:11:3
[INFO] [stdout]    |
[INFO] [stdout] 11 |   number: u8,
[INFO] [stdout]    |   ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/unit-3/04_2_use_q_mark_main.rs:1:29
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn main() -> Result<(), Box<std::error::Error>> {
[INFO] [stdout]   |                             ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `clock`
[INFO] [stdout]   --> src/unit-1/08_structs.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let clock = Clock::Analog {
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_clock`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Center`
[INFO] [stdout]  --> src/unit-1/08_structs.rs:2:3
[INFO] [stdout]   |
[INFO] [stdout] 2 |   Center,
[INFO] [stdout]   |   ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Defense`
[INFO] [stdout]  --> src/unit-1/08_structs.rs:4:3
[INFO] [stdout]   |
[INFO] [stdout] 4 |   Defense,
[INFO] [stdout]   |   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Goalie`
[INFO] [stdout]  --> src/unit-1/08_structs.rs:5:3
[INFO] [stdout]   |
[INFO] [stdout] 5 |   Goalie,
[INFO] [stdout]   |   ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `position`
[INFO] [stdout]   --> src/unit-1/08_structs.rs:12:3
[INFO] [stdout]    |
[INFO] [stdout] 12 |   position: HockeyPosition,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Sundial`
[INFO] [stdout]   --> src/unit-1/08_structs.rs:17:3
[INFO] [stdout]    |
[INFO] [stdout] 17 |   Sundial { hours: u8 },
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Digital`
[INFO] [stdout]   --> src/unit-1/08_structs.rs:18:3
[INFO] [stdout]    |
[INFO] [stdout] 18 |   Digital { hours: u8, minutes: u8 },
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `hours`
[INFO] [stdout]   --> src/unit-1/08_structs.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 |   Analog { hours: u8, minutes: u8, seconds: u8 },
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `minutes`
[INFO] [stdout]   --> src/unit-1/08_structs.rs:19:23
[INFO] [stdout]    |
[INFO] [stdout] 19 |   Analog { hours: u8, minutes: u8, seconds: u8 },
[INFO] [stdout]    |                       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `seconds`
[INFO] [stdout]   --> src/unit-1/08_structs.rs:19:36
[INFO] [stdout]    |
[INFO] [stdout] 19 |   Analog { hours: u8, minutes: u8, seconds: u8 },
[INFO] [stdout]    |                                    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/unit-3/07_2_failure.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.69s
[INFO] running `Command { std: "docker" "inspect" "9213adc05907a199f8030c5cf2c08d75cb39837754dbe82861385d4510e9e90d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9213adc05907a199f8030c5cf2c08d75cb39837754dbe82861385d4510e9e90d", kill_on_drop: false }`
[INFO] [stdout] 9213adc05907a199f8030c5cf2c08d75cb39837754dbe82861385d4510e9e90d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4f6189290a40c82f51440e0b070528b9690d4050d262774eec5fae36ceb95834
[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" "4f6189290a40c82f51440e0b070528b9690d4050d262774eec5fae36ceb95834", kill_on_drop: false }`
[INFO] [stderr]    Compiling myproject v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/unit-3/07_2_failure.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Center`
[INFO] [stdout]  --> src/unit-1/09_methods.rs:3:3
[INFO] [stdout]   |
[INFO] [stdout] 3 |   Center,
[INFO] [stdout]   |   ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Defense`
[INFO] [stdout]  --> src/unit-1/09_methods.rs:5:3
[INFO] [stdout]   |
[INFO] [stdout] 5 |   Defense,
[INFO] [stdout]   |   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Goalie`
[INFO] [stdout]  --> src/unit-1/09_methods.rs:6:3
[INFO] [stdout]   |
[INFO] [stdout] 6 |   Goalie,
[INFO] [stdout]   |   ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `number`
[INFO] [stdout]   --> src/unit-1/09_methods.rs:11:3
[INFO] [stdout]    |
[INFO] [stdout] 11 |   number: u8,
[INFO] [stdout]    |   ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `clock`
[INFO] [stdout]   --> src/unit-1/08_structs.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let clock = Clock::Analog {
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_clock`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Center`
[INFO] [stdout]  --> src/unit-1/08_structs.rs:2:3
[INFO] [stdout]   |
[INFO] [stdout] 2 |   Center,
[INFO] [stdout]   |   ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Defense`
[INFO] [stdout]  --> src/unit-1/08_structs.rs:4:3
[INFO] [stdout]   |
[INFO] [stdout] 4 |   Defense,
[INFO] [stdout]   |   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Goalie`
[INFO] [stdout]  --> src/unit-1/08_structs.rs:5:3
[INFO] [stdout]   |
[INFO] [stdout] 5 |   Goalie,
[INFO] [stdout]   |   ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `position`
[INFO] [stdout]   --> src/unit-1/08_structs.rs:12:3
[INFO] [stdout]    |
[INFO] [stdout] 12 |   position: HockeyPosition,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Sundial`
[INFO] [stdout]   --> src/unit-1/08_structs.rs:17:3
[INFO] [stdout]    |
[INFO] [stdout] 17 |   Sundial { hours: u8 },
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Digital`
[INFO] [stdout]   --> src/unit-1/08_structs.rs:18:3
[INFO] [stdout]    |
[INFO] [stdout] 18 |   Digital { hours: u8, minutes: u8 },
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `hours`
[INFO] [stdout]   --> src/unit-1/08_structs.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 |   Analog { hours: u8, minutes: u8, seconds: u8 },
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `minutes`
[INFO] [stdout]   --> src/unit-1/08_structs.rs:19:23
[INFO] [stdout]    |
[INFO] [stdout] 19 |   Analog { hours: u8, minutes: u8, seconds: u8 },
[INFO] [stdout]    |                       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `seconds`
[INFO] [stdout]   --> src/unit-1/08_structs.rs:19:36
[INFO] [stdout]    |
[INFO] [stdout] 19 |   Analog { hours: u8, minutes: u8, seconds: u8 },
[INFO] [stdout]    |                                    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/unit-3/04_2_use_q_mark_main.rs:1:29
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn main() -> Result<(), Box<std::error::Error>> {
[INFO] [stdout]   |                             ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.57s
[INFO] running `Command { std: "docker" "inspect" "4f6189290a40c82f51440e0b070528b9690d4050d262774eec5fae36ceb95834", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f6189290a40c82f51440e0b070528b9690d4050d262774eec5fae36ceb95834", kill_on_drop: false }`
[INFO] [stdout] 4f6189290a40c82f51440e0b070528b9690d4050d262774eec5fae36ceb95834
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9b46329f095c8d0c2d53701f124ad9297a72617cf014c845bf92a22670c8d7ba
[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" "9b46329f095c8d0c2d53701f124ad9297a72617cf014c845bf92a22670c8d7ba", kill_on_drop: false }`
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/unit-3/07_2_failure.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Center`
[INFO] [stderr]  --> src/unit-1/09_methods.rs:3:3
[INFO] [stderr]   |
[INFO] [stderr] 3 |   Center,
[INFO] [stderr]   |   ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Defense`
[INFO] [stderr]  --> src/unit-1/09_methods.rs:5:3
[INFO] [stderr]   |
[INFO] [stderr] 5 |   Defense,
[INFO] [stderr]   |   ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Goalie`
[INFO] [stderr]  --> src/unit-1/09_methods.rs:6:3
[INFO] [stderr]   |
[INFO] [stderr] 6 |   Goalie,
[INFO] [stderr]   |   ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `number`
[INFO] [stderr]   --> src/unit-1/09_methods.rs:11:3
[INFO] [stderr]    |
[INFO] [stderr] 11 |   number: u8,
[INFO] [stderr]    |   ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `clock`
[INFO] [stderr]   --> src/unit-1/08_structs.rs:39:9
[INFO] [stderr]    |
[INFO] [stderr] 39 |     let clock = Clock::Analog {
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_clock`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Center`
[INFO] [stderr]  --> src/unit-1/08_structs.rs:2:3
[INFO] [stderr]   |
[INFO] [stderr] 2 |   Center,
[INFO] [stderr]   |   ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Defense`
[INFO] [stderr]  --> src/unit-1/08_structs.rs:4:3
[INFO] [stderr]   |
[INFO] [stderr] 4 |   Defense,
[INFO] [stderr]   |   ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Goalie`
[INFO] [stderr]  --> src/unit-1/08_structs.rs:5:3
[INFO] [stderr]   |
[INFO] [stderr] 5 |   Goalie,
[INFO] [stderr]   |   ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `position`
[INFO] [stderr]   --> src/unit-1/08_structs.rs:12:3
[INFO] [stderr]    |
[INFO] [stderr] 12 |   position: HockeyPosition,
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Sundial`
[INFO] [stderr]   --> src/unit-1/08_structs.rs:17:3
[INFO] [stderr]    |
[INFO] [stderr] 17 |   Sundial { hours: u8 },
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Digital`
[INFO] [stderr]   --> src/unit-1/08_structs.rs:18:3
[INFO] [stderr]    |
[INFO] [stderr] 18 |   Digital { hours: u8, minutes: u8 },
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `hours`
[INFO] [stderr]   --> src/unit-1/08_structs.rs:19:12
[INFO] [stderr]    |
[INFO] [stderr] 19 |   Analog { hours: u8, minutes: u8, seconds: u8 },
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `minutes`
[INFO] [stderr]   --> src/unit-1/08_structs.rs:19:23
[INFO] [stderr]    |
[INFO] [stderr] 19 |   Analog { hours: u8, minutes: u8, seconds: u8 },
[INFO] [stderr]    |                       ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `seconds`
[INFO] [stderr]   --> src/unit-1/08_structs.rs:19:36
[INFO] [stderr]    |
[INFO] [stderr] 19 |   Analog { hours: u8, minutes: u8, seconds: u8 },
[INFO] [stderr]    |                                    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/unit-3/04_2_use_q_mark_main.rs:1:29
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn main() -> Result<(), Box<std::error::Error>> {
[INFO] [stderr]   |                             ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: `myproject` (bin "error-handling-crates" test) generated 1 warning
[INFO] [stderr] warning: `myproject` (bin "methods" test) generated 4 warnings
[INFO] [stderr] warning: `myproject` (bin "sturcts" test) generated 10 warnings
[INFO] [stderr] warning: `myproject` (bin "writing-a-function-that-returns-a-result-and-using-the-question-mark-operator" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stdout] 
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[INFO] running `Command { std: "docker" "inspect" "9b46329f095c8d0c2d53701f124ad9297a72617cf014c845bf92a22670c8d7ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b46329f095c8d0c2d53701f124ad9297a72617cf014c845bf92a22670c8d7ba", kill_on_drop: false }`
[INFO] [stdout] 9b46329f095c8d0c2d53701f124ad9297a72617cf014c845bf92a22670c8d7ba