[INFO] cloning repository https://github.com/conradludgate/rubiks
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/conradludgate/rubiks" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fconradludgate%2Frubiks", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fconradludgate%2Frubiks'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c86242c7ff7f01f45f90019538020557ab1d9ea8
[INFO] checking conradludgate/rubiks against master#568f6a8641e391ffcdcdb03e79d0901731d8d399 for pr-117164
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fconradludgate%2Frubiks" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/conradludgate/rubiks on toolchain 568f6a8641e391ffcdcdb03e79d0901731d8d399
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+568f6a8641e391ffcdcdb03e79d0901731d8d399" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/conradludgate/rubiks
[INFO] finished tweaking git repo https://github.com/conradludgate/rubiks
[INFO] tweaked toml for git repo https://github.com/conradludgate/rubiks written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/conradludgate/rubiks 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" "+568f6a8641e391ffcdcdb03e79d0901731d8d399" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking conradludgate/rubiks against try#eb3956d47f58f1c7c0a5694b1d3401945bc41dce for pr-117164
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fconradludgate%2Frubiks" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/conradludgate/rubiks on toolchain eb3956d47f58f1c7c0a5694b1d3401945bc41dce
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+eb3956d47f58f1c7c0a5694b1d3401945bc41dce" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/conradludgate/rubiks
[INFO] finished tweaking git repo https://github.com/conradludgate/rubiks
[INFO] tweaked toml for git repo https://github.com/conradludgate/rubiks written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/conradludgate/rubiks 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" "+eb3956d47f58f1c7c0a5694b1d3401945bc41dce" "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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+eb3956d47f58f1c7c0a5694b1d3401945bc41dce" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f3e879267bd036f61a0e1ef7309d99f8d6b3994e0f32b6fdcd58f8a41995ecd6
[INFO] running `Command { std: "docker" "start" "-a" "f3e879267bd036f61a0e1ef7309d99f8d6b3994e0f32b6fdcd58f8a41995ecd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f3e879267bd036f61a0e1ef7309d99f8d6b3994e0f32b6fdcd58f8a41995ecd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3e879267bd036f61a0e1ef7309d99f8d6b3994e0f32b6fdcd58f8a41995ecd6", kill_on_drop: false }`
[INFO] [stdout] f3e879267bd036f61a0e1ef7309d99f8d6b3994e0f32b6fdcd58f8a41995ecd6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+eb3956d47f58f1c7c0a5694b1d3401945bc41dce" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 063c9951f2e4e20e785136fd9a79dcc174a73d26bcbec0f25b2703bdfa61480f
[INFO] running `Command { std: "docker" "start" "-a" "063c9951f2e4e20e785136fd9a79dcc174a73d26bcbec0f25b2703bdfa61480f", kill_on_drop: false }`
[INFO] [stderr]     Checking rubiks v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Cube` is never constructed
[INFO] [stdout]  --> src/cube.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Cube {
[INFO] [stdout]   |            ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Cube` is never constructed
[INFO] [stdout]  --> src/cube.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Cube {
[INFO] [stdout]   |            ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Zero` and `One` are never constructed
[INFO] [stdout]  --> src/cube.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub enum EdgeOrientation {
[INFO] [stdout]   |          --------------- variants in this enum
[INFO] [stdout] 8 |     Zero,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 9 |     One,
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `EdgeOrientation` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Zero`, `One`, and `Two` are never constructed
[INFO] [stdout]   --> src/cube.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub enum CornerOrientation {
[INFO] [stdout]    |          ----------------- variants in this enum
[INFO] [stdout] 14 |     Zero,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 15 |     One,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 16 |     Two,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `CornerOrientation` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Zero` and `One` are never constructed
[INFO] [stdout]  --> src/cube.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub enum EdgeOrientation {
[INFO] [stdout]   |          --------------- variants in this enum
[INFO] [stdout] 8 |     Zero,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 9 |     One,
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `EdgeOrientation` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Red`, `White`, `Blue`, `Orange`, `Yellow`, and `Green` are never constructed
[INFO] [stdout]   --> src/cube.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub enum Side {
[INFO] [stdout]    |          ---- variants in this enum
[INFO] [stdout] 28 |     Red,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 29 |     White,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 30 |     Blue,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 31 |     Orange,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 32 |     Yellow,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 33 |     Green,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Side` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Zero`, `One`, and `Two` are never constructed
[INFO] [stdout]   --> src/cube.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub enum CornerOrientation {
[INFO] [stdout]    |          ----------------- variants in this enum
[INFO] [stdout] 14 |     Zero,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 15 |     One,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 16 |     Two,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `CornerOrientation` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `edge` and `corner` are never used
[INFO] [stdout]   --> src/cube.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 36 | impl Side {
[INFO] [stdout]    | --------- associated functions in this implementation
[INFO] [stdout] 37 |     pub fn edge(a: Self, b: Self) -> Option<Edge> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 54 |     pub fn corner(a: Self, b: Self, c: Self) -> Option<Corner> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Red`, `White`, `Blue`, `Orange`, `Yellow`, and `Green` are never constructed
[INFO] [stdout]   --> src/cube.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub enum Side {
[INFO] [stdout]    |          ---- variants in this enum
[INFO] [stdout] 28 |     Red,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 29 |     White,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 30 |     Blue,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 31 |     Orange,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 32 |     Yellow,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 33 |     Green,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Side` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `edge` and `corner` are never used
[INFO] [stdout]   --> src/cube.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 36 | impl Side {
[INFO] [stdout]    | --------- associated functions in this implementation
[INFO] [stdout] 37 |     pub fn edge(a: Self, b: Self) -> Option<Edge> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 54 |     pub fn corner(a: Self, b: Self, c: Self) -> Option<Corner> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] running `Command { std: "docker" "inspect" "063c9951f2e4e20e785136fd9a79dcc174a73d26bcbec0f25b2703bdfa61480f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "063c9951f2e4e20e785136fd9a79dcc174a73d26bcbec0f25b2703bdfa61480f", kill_on_drop: false }`
[INFO] [stdout] 063c9951f2e4e20e785136fd9a79dcc174a73d26bcbec0f25b2703bdfa61480f