[INFO] cloning repository https://github.com/newmancodes/ferris-mcclane
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/newmancodes/ferris-mcclane" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnewmancodes%2Fferris-mcclane", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnewmancodes%2Fferris-mcclane'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bf8188f6217700977c35922f395a733c35328e98
[INFO] checking newmancodes/ferris-mcclane against try#ddcf048784667508cd676fef4667f88ae15628a3 for pr-148271
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnewmancodes%2Fferris-mcclane" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/newmancodes/ferris-mcclane
[INFO] finished tweaking git repo https://github.com/newmancodes/ferris-mcclane
[INFO] tweaked toml for git repo https://github.com/newmancodes/ferris-mcclane written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/newmancodes/ferris-mcclane on toolchain ddcf048784667508cd676fef4667f88ae15628a3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ddcf048784667508cd676fef4667f88ae15628a3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/newmancodes/ferris-mcclane 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" "+ddcf048784667508cd676fef4667f88ae15628a3" "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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ddcf048784667508cd676fef4667f88ae15628a3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2215a876dff30db6fa93a2e827e668f5268ee4bfaeb9c036f536897d5f46ef13
[INFO] running `Command { std: "docker" "start" "-a" "2215a876dff30db6fa93a2e827e668f5268ee4bfaeb9c036f536897d5f46ef13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2215a876dff30db6fa93a2e827e668f5268ee4bfaeb9c036f536897d5f46ef13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2215a876dff30db6fa93a2e827e668f5268ee4bfaeb9c036f536897d5f46ef13", kill_on_drop: false }`
[INFO] [stdout] 2215a876dff30db6fa93a2e827e668f5268ee4bfaeb9c036f536897d5f46ef13
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ddcf048784667508cd676fef4667f88ae15628a3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7ba3663cbc04d311952b8a7e9e7be3a02c17a51bc8689e484028408232eb1118
[INFO] running `Command { std: "docker" "start" "-a" "7ba3663cbc04d311952b8a7e9e7be3a02c17a51bc8689e484028408232eb1118", kill_on_drop: false }`
[INFO] [stderr]     Checking ferris-mcclane v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/iterative_deepening_solver.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |         let mut explored: Vec<BucketPuzzle<'a>> = Vec::new();
[INFO] [stdout]    |             ----^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/iterative_deepening_solver.rs:18:13
[INFO] [stdout]    |
[INFO] [stdout] 18 |         let mut frontier: Vec<BucketPuzzle<'a>> = vec!(self.initial_state);
[INFO] [stdout]    |             ----^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `explored`
[INFO] [stdout]   --> src/iterative_deepening_solver.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |         let mut explored: Vec<BucketPuzzle<'a>> = Vec::new();
[INFO] [stdout]    |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_explored`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `frontier`
[INFO] [stdout]   --> src/iterative_deepening_solver.rs:18:13
[INFO] [stdout]    |
[INFO] [stdout] 18 |         let mut frontier: Vec<BucketPuzzle<'a>> = vec!(self.initial_state);
[INFO] [stdout]    |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_frontier`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `parent` is never read
[INFO] [stdout]   --> src/bucket_puzzle.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout]  5 | pub struct BucketPuzzle<'a> {
[INFO] [stdout]    |            ------------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 10 |     parent: Option<&'a BucketPuzzle<'a>>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_goal_state` is never used
[INFO] [stdout]   --> src/bucket_puzzle.rs:42:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl<'a> BucketPuzzle<'a> {
[INFO] [stdout]    | ------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 42 |     pub fn is_goal_state(&'a self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `IterativeDeepeningSolver` is never constructed
[INFO] [stdout]  --> src/iterative_deepening_solver.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct IterativeDeepeningSolver<'a> {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `solve` are never used
[INFO] [stdout]   --> src/iterative_deepening_solver.rs:9:12
[INFO] [stdout]    |
[INFO] [stdout]  8 | impl<'a> IterativeDeepeningSolver<'a> {
[INFO] [stdout]    | ------------------------------------- associated items in this implementation
[INFO] [stdout]  9 |     pub fn new(initial_state: BucketPuzzle<'a>, search_depth_limit: u8) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 16 |     pub fn solve(self) -> Option<&'a BucketPuzzle<'a>> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/iterative_deepening_solver.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |         let mut explored: Vec<BucketPuzzle<'a>> = Vec::new();
[INFO] [stdout]    |             ----^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/iterative_deepening_solver.rs:18:13
[INFO] [stdout]    |
[INFO] [stdout] 18 |         let mut frontier: Vec<BucketPuzzle<'a>> = vec!(self.initial_state);
[INFO] [stdout]    |             ----^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `explored`
[INFO] [stdout]   --> src/iterative_deepening_solver.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |         let mut explored: Vec<BucketPuzzle<'a>> = Vec::new();
[INFO] [stdout]    |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_explored`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `frontier`
[INFO] [stdout]   --> src/iterative_deepening_solver.rs:18:13
[INFO] [stdout]    |
[INFO] [stdout] 18 |         let mut frontier: Vec<BucketPuzzle<'a>> = vec!(self.initial_state);
[INFO] [stdout]    |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_frontier`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `parent` is never read
[INFO] [stdout]   --> src/bucket_puzzle.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout]  5 | pub struct BucketPuzzle<'a> {
[INFO] [stdout]    |            ------------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 10 |     parent: Option<&'a BucketPuzzle<'a>>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_goal_state` is never used
[INFO] [stdout]   --> src/bucket_puzzle.rs:42:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl<'a> BucketPuzzle<'a> {
[INFO] [stdout]    | ------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 42 |     pub fn is_goal_state(&'a self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `IterativeDeepeningSolver` is never constructed
[INFO] [stdout]  --> src/iterative_deepening_solver.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct IterativeDeepeningSolver<'a> {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `solve` are never used
[INFO] [stdout]   --> src/iterative_deepening_solver.rs:9:12
[INFO] [stdout]    |
[INFO] [stdout]  8 | impl<'a> IterativeDeepeningSolver<'a> {
[INFO] [stdout]    | ------------------------------------- associated items in this implementation
[INFO] [stdout]  9 |     pub fn new(initial_state: BucketPuzzle<'a>, search_depth_limit: u8) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 16 |     pub fn solve(self) -> Option<&'a BucketPuzzle<'a>> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] running `Command { std: "docker" "inspect" "7ba3663cbc04d311952b8a7e9e7be3a02c17a51bc8689e484028408232eb1118", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ba3663cbc04d311952b8a7e9e7be3a02c17a51bc8689e484028408232eb1118", kill_on_drop: false }`
[INFO] [stdout] 7ba3663cbc04d311952b8a7e9e7be3a02c17a51bc8689e484028408232eb1118
