[INFO] cloning repository https://github.com/cite-reader/slide-puzzle
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cite-reader/slide-puzzle" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcite-reader%2Fslide-puzzle", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcite-reader%2Fslide-puzzle'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5f288a9154b1793a87fb40593cc65271edafd7c6
[INFO] testing cite-reader/slide-puzzle against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcite-reader%2Fslide-puzzle" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cite-reader/slide-puzzle on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cite-reader/slide-puzzle
[INFO] finished tweaking git repo https://github.com/cite-reader/slide-puzzle
[INFO] tweaked toml for git repo https://github.com/cite-reader/slide-puzzle written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/cite-reader/slide-puzzle already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a2f531dfb7427b53acccd93c00185e6af94fe98d9665cdc6bf3981fa1db0309f
[INFO] running `Command { std: "docker" "start" "-a" "a2f531dfb7427b53acccd93c00185e6af94fe98d9665cdc6bf3981fa1db0309f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a2f531dfb7427b53acccd93c00185e6af94fe98d9665cdc6bf3981fa1db0309f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2f531dfb7427b53acccd93c00185e6af94fe98d9665cdc6bf3981fa1db0309f", kill_on_drop: false }`
[INFO] [stdout] a2f531dfb7427b53acccd93c00185e6af94fe98d9665cdc6bf3981fa1db0309f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6eba74189ae56b4aa5d0bd4db14f2478fb6dbe1909a8e45c7b0c9638e03a1fa0
[INFO] running `Command { std: "docker" "start" "-a" "6eba74189ae56b4aa5d0bd4db14f2478fb6dbe1909a8e45c7b0c9638e03a1fa0", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling slide-puzzle v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/game.rs:22:17
[INFO] [stdout]    |
[INFO] [stdout] 22 |                 try!(write!(f, "{}\n", cell));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/game.rs:26:17
[INFO] [stdout]    |
[INFO] [stdout] 26 |                 try!(write!(f, "{} ", cell));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/game.rs:172:21
[INFO] [stdout]     |
[INFO] [stdout] 172 |         for tile in (1 .. self.cells.len() - 1) {
[INFO] [stdout]     |                     ^                         ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 172 -         for tile in (1 .. self.cells.len() - 1) {
[INFO] [stdout] 172 +         for tile in 1 .. self.cells.len() - 1 {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.78s
[INFO] running `Command { std: "docker" "inspect" "6eba74189ae56b4aa5d0bd4db14f2478fb6dbe1909a8e45c7b0c9638e03a1fa0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6eba74189ae56b4aa5d0bd4db14f2478fb6dbe1909a8e45c7b0c9638e03a1fa0", kill_on_drop: false }`
[INFO] [stdout] 6eba74189ae56b4aa5d0bd4db14f2478fb6dbe1909a8e45c7b0c9638e03a1fa0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 21a444dd61f07710498b1e6c1a4f571e8b52fb934fec90da5e2f2797bf886c61
[INFO] running `Command { std: "docker" "start" "-a" "21a444dd61f07710498b1e6c1a4f571e8b52fb934fec90da5e2f2797bf886c61", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/game.rs:22:17
[INFO] [stdout]    |
[INFO] [stdout] 22 |                 try!(write!(f, "{}\n", cell));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling slide-puzzle v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/game.rs:26:17
[INFO] [stdout]    |
[INFO] [stdout] 26 |                 try!(write!(f, "{} ", cell));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/game.rs:172:21
[INFO] [stdout]     |
[INFO] [stdout] 172 |         for tile in (1 .. self.cells.len() - 1) {
[INFO] [stdout]     |                     ^                         ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 172 -         for tile in (1 .. self.cells.len() - 1) {
[INFO] [stdout] 172 +         for tile in 1 .. self.cells.len() - 1 {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/game.rs:22:17
[INFO] [stdout]    |
[INFO] [stdout] 22 |                 try!(write!(f, "{}\n", cell));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/game.rs:26:17
[INFO] [stdout]    |
[INFO] [stdout] 26 |                 try!(write!(f, "{} ", cell));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/game.rs:172:21
[INFO] [stdout]     |
[INFO] [stdout] 172 |         for tile in (1 .. self.cells.len() - 1) {
[INFO] [stdout]     |                     ^                         ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 172 -         for tile in (1 .. self.cells.len() - 1) {
[INFO] [stdout] 172 +         for tile in 1 .. self.cells.len() - 1 {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.34s
[INFO] running `Command { std: "docker" "inspect" "21a444dd61f07710498b1e6c1a4f571e8b52fb934fec90da5e2f2797bf886c61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21a444dd61f07710498b1e6c1a4f571e8b52fb934fec90da5e2f2797bf886c61", kill_on_drop: false }`
[INFO] [stdout] 21a444dd61f07710498b1e6c1a4f571e8b52fb934fec90da5e2f2797bf886c61
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1b8e374d18eeaf2fe41201e9e49e24508b487f831caa006afe3753d35d5d6a61
[INFO] running `Command { std: "docker" "start" "-a" "1b8e374d18eeaf2fe41201e9e49e24508b487f831caa006afe3753d35d5d6a61", kill_on_drop: false }`
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/game.rs:22:17
[INFO] [stderr]    |
[INFO] [stderr] 22 |                 try!(write!(f, "{}\n", cell));
[INFO] [stderr]    |                 ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/game.rs:26:17
[INFO] [stderr]    |
[INFO] [stderr] 26 |                 try!(write!(f, "{} ", cell));
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]    --> src/game.rs:172:21
[INFO] [stderr]     |
[INFO] [stderr] 172 |         for tile in (1 .. self.cells.len() - 1) {
[INFO] [stderr]     |                     ^                         ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 172 -         for tile in (1 .. self.cells.len() - 1) {
[INFO] [stderr] 172 +         for tile in 1 .. self.cells.len() - 1 {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: `slide-puzzle` (lib) generated 3 warnings
[INFO] [stderr] warning: `slide-puzzle` (lib test) generated 3 warnings (3 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/slide_puzzle-f650b5013d600f38)
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test game::test::bad_boards_do_not_build ... ok
[INFO] [stdout] test game::test::bad_movements_fail ... ok
[INFO] [stdout] test game::test::trivial_board_construction ... ok
[INFO] [stdout] test game::test::trivial_move_right ... ok
[INFO] [stdout] test search::tests::board_1 ... ok
[INFO] [stdout] test search::tests::big_board ... ok
[INFO] [stdout] test search::tests::board_2 ... ok
[INFO] [stdout] test search::tests::board_3 ... ok
[INFO] [stdout] test search::tests::board_4 ... ok
[INFO] [stdout] test search::tests::board_5 ... ok
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/terminal_puzzle-763aef92166e84e8)
[INFO] [stdout] test search::tests::board_6 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.05s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests slide_puzzle
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout] 
[INFO] [stderr]    --> /opt/rustwide/workdir/src/game.rs:172:21
[INFO] [stdout] running 0 tests
[INFO] [stderr]     |
[INFO] [stdout] 
[INFO] [stderr] 172 |         for tile in (1 .. self.cells.len() - 1) {
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]     |                     ^                         ^
[INFO] [stdout] 
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 172 -         for tile in (1 .. self.cells.len() - 1) {
[INFO] [stderr] 172 +         for tile in 1 .. self.cells.len() - 1 {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] running `Command { std: "docker" "inspect" "1b8e374d18eeaf2fe41201e9e49e24508b487f831caa006afe3753d35d5d6a61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b8e374d18eeaf2fe41201e9e49e24508b487f831caa006afe3753d35d5d6a61", kill_on_drop: false }`
[INFO] [stdout] 1b8e374d18eeaf2fe41201e9e49e24508b487f831caa006afe3753d35d5d6a61