[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] checking sbeckeriv/mazerunner against master#4c60a0ea5b2385d7400df9db1ad04e96f2a4c154 for 92191_revert
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsbeckeriv%2Fmazerunner" "/workspace/builds/worker-32/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-32/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sbeckeriv/mazerunner on toolchain 4c60a0ea5b2385d7400df9db1ad04e96f2a4c154
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4c60a0ea5b2385d7400df9db1ad04e96f2a4c154" "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-32/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" "+4c60a0ea5b2385d7400df9db1ad04e96f2a4c154" "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 v0.8.0
[INFO] [stderr]   Downloaded getrandom v0.2.0
[INFO] [stderr]   Downloaded rand_core v0.6.0
[INFO] [stderr]   Downloaded rand_pcg v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+4c60a0ea5b2385d7400df9db1ad04e96f2a4c154" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0284b2147c2f2e5754713d1be36cc9775e0eb6d3900074feb0f77fc3cdde0c0f
[INFO] running `Command { std: "docker" "start" "-a" "0284b2147c2f2e5754713d1be36cc9775e0eb6d3900074feb0f77fc3cdde0c0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0284b2147c2f2e5754713d1be36cc9775e0eb6d3900074feb0f77fc3cdde0c0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0284b2147c2f2e5754713d1be36cc9775e0eb6d3900074feb0f77fc3cdde0c0f", kill_on_drop: false }`
[INFO] [stdout] 0284b2147c2f2e5754713d1be36cc9775e0eb6d3900074feb0f77fc3cdde0c0f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+4c60a0ea5b2385d7400df9db1ad04e96f2a4c154" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1d35a2a392a2cdfdbb5b71eaf5a9b039378ec2b6ec1175759be35450f6eb4c1d
[INFO] running `Command { std: "docker" "start" "-a" "1d35a2a392a2cdfdbb5b71eaf5a9b039378ec2b6ec1175759be35450f6eb4c1d", 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]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking rand_core v0.6.0
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand_pcg v0.3.0
[INFO] [stderr]     Checking rand v0.8.0
[INFO] [stderr]     Checking mazerunner v0.1.0 (/opt/rustwide/workdir)
[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]   = note: `#[warn(dead_code)]` on by default
[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: 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] 
[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: 7 warnings emitted
[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]   = note: `#[warn(dead_code)]` on by default
[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: 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] 
[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] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.98s
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1d35a2a392a2cdfdbb5b71eaf5a9b039378ec2b6ec1175759be35450f6eb4c1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d35a2a392a2cdfdbb5b71eaf5a9b039378ec2b6ec1175759be35450f6eb4c1d", kill_on_drop: false }`
[INFO] [stdout] 1d35a2a392a2cdfdbb5b71eaf5a9b039378ec2b6ec1175759be35450f6eb4c1d