[INFO] cloning repository https://github.com/siujamo/rust_playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/siujamo/rust_playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsiujamo%2Frust_playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsiujamo%2Frust_playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 21a56daff28b37f491443ffa4750ffc876594b13
[INFO] checking siujamo/rust_playground against master#4b596bbd847672da87763b76171687d3544863c2 for pr-144544
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsiujamo%2Frust_playground" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/siujamo/rust_playground
[INFO] finished tweaking git repo https://github.com/siujamo/rust_playground
[INFO] tweaked toml for git repo https://github.com/siujamo/rust_playground written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/siujamo/rust_playground on toolchain 4b596bbd847672da87763b76171687d3544863c2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4b596bbd847672da87763b76171687d3544863c2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/siujamo/rust_playground 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" "+4b596bbd847672da87763b76171687d3544863c2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+4b596bbd847672da87763b76171687d3544863c2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 76e870c27903e835e1f8384417e3e3df06b1c8b648b3272ba8f99bcc1d5a2adc
[INFO] running `Command { std: "docker" "start" "-a" "76e870c27903e835e1f8384417e3e3df06b1c8b648b3272ba8f99bcc1d5a2adc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "76e870c27903e835e1f8384417e3e3df06b1c8b648b3272ba8f99bcc1d5a2adc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76e870c27903e835e1f8384417e3e3df06b1c8b648b3272ba8f99bcc1d5a2adc", kill_on_drop: false }`
[INFO] [stdout] 76e870c27903e835e1f8384417e3e3df06b1c8b648b3272ba8f99bcc1d5a2adc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+4b596bbd847672da87763b76171687d3544863c2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d1dcbee0b6170062822dd1537d8b6cbdb99b46b221b6c180d46fbd5c17c6a063
[INFO] running `Command { std: "docker" "start" "-a" "d1dcbee0b6170062822dd1537d8b6cbdb99b46b221b6c180d46fbd5c17c6a063", kill_on_drop: false }`
[INFO] [stderr]     Checking day01_user_defined_types v0.1.0 (/opt/rustwide/workdir/day01_user_defined_types)
[INFO] [stderr]     Checking day01_reference v0.1.0 (/opt/rustwide/workdir/day01_reference)
[INFO] [stderr]     Checking day01_tuples_and_arrays v0.1.0 (/opt/rustwide/workdir/day01_tuples_and_arrays)
[INFO] [stderr]     Checking day01_control_flow_basics v0.1.0 (/opt/rustwide/workdir/day01_control_flow_basics)
[INFO] [stderr]     Checking day01_types_and_values v0.1.0 (/opt/rustwide/workdir/day01_types_and_values)
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]   --> day01_user_defined_types/src/main.rs:10:15
[INFO] [stdout]    |
[INFO] [stdout] 10 |     LobbyCall(Direction, Floor),
[INFO] [stdout]    |     --------- ^^^^^^^^^  ^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     fields in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Button` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]    |
[INFO] [stdout] 10 -     LobbyCall(Direction, Floor),
[INFO] [stdout] 10 +     LobbyCall((), ()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> day01_user_defined_types/src/main.rs:13:14
[INFO] [stdout]    |
[INFO] [stdout] 13 |     CarFloor(Floor),
[INFO] [stdout]    |     -------- ^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Button` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 13 -     CarFloor(Floor),
[INFO] [stdout] 13 +     CarFloor(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> day01_user_defined_types/src/main.rs:20:19
[INFO] [stdout]    |
[INFO] [stdout] 20 |     ButtonPressed(Button),
[INFO] [stdout]    |     ------------- ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Event` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 20 -     ButtonPressed(Button),
[INFO] [stdout] 20 +     ButtonPressed(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> day01_user_defined_types/src/main.rs:23:16
[INFO] [stdout]    |
[INFO] [stdout] 23 |     CarArrived(Floor),
[INFO] [stdout]    |     ---------- ^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Event` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 23 -     CarArrived(Floor),
[INFO] [stdout] 23 +     CarArrived(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Down` is never constructed
[INFO] [stdout]   --> day01_user_defined_types/src/main.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | enum Direction {
[INFO] [stdout]    |      --------- variant in this enum
[INFO] [stdout] 35 |     Up,
[INFO] [stdout] 36 |     Down,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Direction` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]   --> day01_user_defined_types/src/main.rs:10:15
[INFO] [stdout]    |
[INFO] [stdout] 10 |     LobbyCall(Direction, Floor),
[INFO] [stdout]    |     --------- ^^^^^^^^^  ^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     fields in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Button` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]    |
[INFO] [stdout] 10 -     LobbyCall(Direction, Floor),
[INFO] [stdout] 10 +     LobbyCall((), ()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> day01_user_defined_types/src/main.rs:13:14
[INFO] [stdout]    |
[INFO] [stdout] 13 |     CarFloor(Floor),
[INFO] [stdout]    |     -------- ^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Button` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 13 -     CarFloor(Floor),
[INFO] [stdout] 13 +     CarFloor(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> day01_user_defined_types/src/main.rs:20:19
[INFO] [stdout]    |
[INFO] [stdout] 20 |     ButtonPressed(Button),
[INFO] [stdout]    |     ------------- ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Event` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 20 -     ButtonPressed(Button),
[INFO] [stdout] 20 +     ButtonPressed(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> day01_user_defined_types/src/main.rs:23:16
[INFO] [stdout]    |
[INFO] [stdout] 23 |     CarArrived(Floor),
[INFO] [stdout]    |     ---------- ^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Event` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 23 -     CarArrived(Floor),
[INFO] [stdout] 23 +     CarArrived(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Down` is never constructed
[INFO] [stdout]   --> day01_user_defined_types/src/main.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | enum Direction {
[INFO] [stdout]    |      --------- variant in this enum
[INFO] [stdout] 35 |     Up,
[INFO] [stdout] 36 |     Down,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Direction` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.24s
[INFO] running `Command { std: "docker" "inspect" "d1dcbee0b6170062822dd1537d8b6cbdb99b46b221b6c180d46fbd5c17c6a063", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1dcbee0b6170062822dd1537d8b6cbdb99b46b221b6c180d46fbd5c17c6a063", kill_on_drop: false }`
[INFO] [stdout] d1dcbee0b6170062822dd1537d8b6cbdb99b46b221b6c180d46fbd5c17c6a063