[INFO] cloning repository https://github.com/sbeckeriv/mazerunner
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sbeckeriv/mazerunner" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsbeckeriv%2Fmazerunner", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsbeckeriv%2Fmazerunner'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 27980d232145c19f270d2bf0be527fbce89c3b84
[INFO] testing sbeckeriv/mazerunner against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsbeckeriv%2Fmazerunner" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] [stderr] Updating files:  50% (4/8)
Updating files:  62% (5/8)
Updating files:  75% (6/8)
Updating files:  87% (7/8)
Updating files: 100% (8/8)
Updating files: 100% (8/8), done.
[INFO] validating manifest of git repo https://github.com/sbeckeriv/mazerunner 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/sbeckeriv/mazerunner
[INFO] finished tweaking git repo https://github.com/sbeckeriv/mazerunner
[INFO] tweaked toml for git repo https://github.com/sbeckeriv/mazerunner written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/sbeckeriv/mazerunner 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rand_pcg v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 455234331e1b265b6c254fb179ad231a0f5ff6ad295d78667615994155560f53
[INFO] running `Command { std: "docker" "start" "-a" "455234331e1b265b6c254fb179ad231a0f5ff6ad295d78667615994155560f53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "455234331e1b265b6c254fb179ad231a0f5ff6ad295d78667615994155560f53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "455234331e1b265b6c254fb179ad231a0f5ff6ad295d78667615994155560f53", kill_on_drop: false }`
[INFO] [stdout] 455234331e1b265b6c254fb179ad231a0f5ff6ad295d78667615994155560f53
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 8603d4348d203294fb0db0a4cb90be4384f9f97e4dea0060a0478b2d78ac8a52
[INFO] running `Command { std: "docker" "start" "-a" "8603d4348d203294fb0db0a4cb90be4384f9f97e4dea0060a0478b2d78ac8a52", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling getrandom v0.2.0
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling rand_core v0.6.0
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling rand_pcg v0.3.0
[INFO] [stderr]    Compiling rand v0.8.0
[INFO] [stderr]    Compiling mazerunner v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `unlink`
[INFO] [stdout]   --> src/builder/grid.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn unlink(&mut self, direction: LinkDirections) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `linked`
[INFO] [stdout]   --> src/builder/grid.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn linked(self, direction: LinkDirections) -> bool {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `backtracker`
[INFO] [stdout]  --> src/builder/mod.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn backtracker(base: &mut Grid) {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `hunt_and_kill`
[INFO] [stdout]   --> src/builder/mod.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub fn hunt_and_kill(base: &mut Grid) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `wilsons`
[INFO] [stdout]   --> src/builder/mod.rs:98:8
[INFO] [stdout]    |
[INFO] [stdout] 98 | pub fn wilsons(base: &mut Grid) {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `aldous_broder`
[INFO] [stdout]    --> src/builder/mod.rs:152:8
[INFO] [stdout]     |
[INFO] [stdout] 152 | pub fn aldous_broder(base: &mut Grid) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sidewinder`
[INFO] [stdout]    --> src/builder/mod.rs:182:8
[INFO] [stdout]     |
[INFO] [stdout] 182 | pub fn sidewinder(base: &mut Grid) {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 36.67s
[INFO] running `Command { std: "docker" "inspect" "8603d4348d203294fb0db0a4cb90be4384f9f97e4dea0060a0478b2d78ac8a52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8603d4348d203294fb0db0a4cb90be4384f9f97e4dea0060a0478b2d78ac8a52", kill_on_drop: false }`
[INFO] [stdout] 8603d4348d203294fb0db0a4cb90be4384f9f97e4dea0060a0478b2d78ac8a52
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 8978b52c5fd859d60c2094d84fd9d2ac2288271c10874299f1ac2f21ea6704a8
[INFO] running `Command { std: "docker" "start" "-a" "8978b52c5fd859d60c2094d84fd9d2ac2288271c10874299f1ac2f21ea6704a8", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling mazerunner v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `unlink`
[INFO] [stdout]   --> src/builder/grid.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn unlink(&mut self, direction: LinkDirections) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `linked`
[INFO] [stdout]   --> src/builder/grid.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn linked(self, direction: LinkDirections) -> bool {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `backtracker`
[INFO] [stdout]  --> src/builder/mod.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn backtracker(base: &mut Grid) {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `hunt_and_kill`
[INFO] [stdout]   --> src/builder/mod.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub fn hunt_and_kill(base: &mut Grid) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `wilsons`
[INFO] [stdout]   --> src/builder/mod.rs:98:8
[INFO] [stdout]    |
[INFO] [stdout] 98 | pub fn wilsons(base: &mut Grid) {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `aldous_broder`
[INFO] [stdout]    --> src/builder/mod.rs:152:8
[INFO] [stdout]     |
[INFO] [stdout] 152 | pub fn aldous_broder(base: &mut Grid) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sidewinder`
[INFO] [stdout]    --> src/builder/mod.rs:182:8
[INFO] [stdout]     |
[INFO] [stdout] 182 | pub fn sidewinder(base: &mut Grid) {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1m 01s
[INFO] running `Command { std: "docker" "inspect" "8978b52c5fd859d60c2094d84fd9d2ac2288271c10874299f1ac2f21ea6704a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8978b52c5fd859d60c2094d84fd9d2ac2288271c10874299f1ac2f21ea6704a8", kill_on_drop: false }`
[INFO] [stdout] 8978b52c5fd859d60c2094d84fd9d2ac2288271c10874299f1ac2f21ea6704a8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 87579e359a54ba4d25201c57216b6aecd5225619febe9fb3aaf35ecc41dcdaf8
[INFO] running `Command { std: "docker" "start" "-a" "87579e359a54ba4d25201c57216b6aecd5225619febe9fb3aaf35ecc41dcdaf8", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: associated function is never used: `unlink`
[INFO] [stderr]   --> src/builder/grid.rs:32:12
[INFO] [stderr]    |
[INFO] [stderr] 32 |     pub fn unlink(&mut self, direction: LinkDirections) {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `linked`
[INFO] [stderr]   --> src/builder/grid.rs:35:12
[INFO] [stderr]    |
[INFO] [stderr] 35 |     pub fn linked(self, direction: LinkDirections) -> bool {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `backtracker`
[INFO] [stderr]  --> src/builder/mod.rs:8:8
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub fn backtracker(base: &mut Grid) {
[INFO] [stderr]   |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `hunt_and_kill`
[INFO] [stderr]   --> src/builder/mod.rs:43:8
[INFO] [stderr]    |
[INFO] [stderr] 43 | pub fn hunt_and_kill(base: &mut Grid) {
[INFO] [stderr]    |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `wilsons`
[INFO] [stderr]   --> src/builder/mod.rs:98:8
[INFO] [stderr]    |
[INFO] [stderr] 98 | pub fn wilsons(base: &mut Grid) {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `aldous_broder`
[INFO] [stderr]    --> src/builder/mod.rs:152:8
[INFO] [stderr]     |
[INFO] [stderr] 152 | pub fn aldous_broder(base: &mut Grid) {
[INFO] [stderr]     |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sidewinder`
[INFO] [stderr]    --> src/builder/mod.rs:182:8
[INFO] [stderr]     |
[INFO] [stderr] 182 | pub fn sidewinder(base: &mut Grid) {
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `mazerunner` (bin "mazerunner" test) generated 7 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.14s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mazerunner-2c0b0527f6dd407d)
[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] running `Command { std: "docker" "inspect" "87579e359a54ba4d25201c57216b6aecd5225619febe9fb3aaf35ecc41dcdaf8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87579e359a54ba4d25201c57216b6aecd5225619febe9fb3aaf35ecc41dcdaf8", kill_on_drop: false }`
[INFO] [stdout] 87579e359a54ba4d25201c57216b6aecd5225619febe9fb3aaf35ecc41dcdaf8