[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 master#99e3aef02079e9c10583638520cd0c134dc3a01d for pr-85530
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCristiandi%2Fcourse-rust-in-motion" "/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/Cristiandi/course-rust-in-motion on toolchain 99e3aef02079e9c10583638520cd0c134dc3a01d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "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-8/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" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "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-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cee4f2ca0286447170edefbe1647ab18ff43016f264db1cb4614cb0a91e1bd2a
[INFO] running `Command { std: "docker" "start" "-a" "cee4f2ca0286447170edefbe1647ab18ff43016f264db1cb4614cb0a91e1bd2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cee4f2ca0286447170edefbe1647ab18ff43016f264db1cb4614cb0a91e1bd2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cee4f2ca0286447170edefbe1647ab18ff43016f264db1cb4614cb0a91e1bd2a", kill_on_drop: false }`
[INFO] [stdout] cee4f2ca0286447170edefbe1647ab18ff43016f264db1cb4614cb0a91e1bd2a
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 22afc92293f4597f5529bfc9438ae35d708aaaff9f548d3cc53c3e21a0da2521
[INFO] running `Command { std: "docker" "start" "-a" "22afc92293f4597f5529bfc9438ae35d708aaaff9f548d3cc53c3e21a0da2521", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]    Compiling rustc-demangle v0.1.18
[INFO] [stderr]    Compiling serde_json v1.0.59
[INFO] [stderr]    Compiling backtrace-sys v0.1.37
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling backtrace v0.3.18
[INFO] [stderr]    Compiling error-chain v0.12.0
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling myproject v0.1.0 (/opt/rustwide/workdir)
[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 was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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: 1 warning emitted
[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: 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: 4 warnings 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 dev [unoptimized + debuginfo] target(s) in 21.64s
[INFO] running `Command { std: "docker" "inspect" "22afc92293f4597f5529bfc9438ae35d708aaaff9f548d3cc53c3e21a0da2521", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22afc92293f4597f5529bfc9438ae35d708aaaff9f548d3cc53c3e21a0da2521", kill_on_drop: false }`
[INFO] [stdout] 22afc92293f4597f5529bfc9438ae35d708aaaff9f548d3cc53c3e21a0da2521
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 07d8fe84f20dd4897a9386abbcdcfca671712ba83f0fe7295e097e63d0d60065
[INFO] running `Command { std: "docker" "start" "-a" "07d8fe84f20dd4897a9386abbcdcfca671712ba83f0fe7295e097e63d0d60065", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling myproject v0.1.0 (/opt/rustwide/workdir)
[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 was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[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 `#[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: 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: 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: 10 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] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.66s
[INFO] running `Command { std: "docker" "inspect" "07d8fe84f20dd4897a9386abbcdcfca671712ba83f0fe7295e097e63d0d60065", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07d8fe84f20dd4897a9386abbcdcfca671712ba83f0fe7295e097e63d0d60065", kill_on_drop: false }`
[INFO] [stdout] 07d8fe84f20dd4897a9386abbcdcfca671712ba83f0fe7295e097e63d0d60065
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 057e106cca41f4002f083d92e0033ce68a4f75396fa434882a514021269e67a9
[INFO] running `Command { std: "docker" "start" "-a" "057e106cca41f4002f083d92e0033ce68a4f75396fa434882a514021269e67a9", kill_on_drop: false }`
[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: 4 warnings emitted
[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: 10 warnings emitted
[INFO] [stderr] 
[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: 1 warning emitted
[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 was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/advantages_of_rusts_error_handling_strategy-beaa19445919daaa)
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[INFO] running `Command { std: "docker" "inspect" "057e106cca41f4002f083d92e0033ce68a4f75396fa434882a514021269e67a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "057e106cca41f4002f083d92e0033ce68a4f75396fa434882a514021269e67a9", kill_on_drop: false }`
[INFO] [stdout] 057e106cca41f4002f083d92e0033ce68a4f75396fa434882a514021269e67a9