[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 try#b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b for pr-82781
[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] validating manifest of git repo https://github.com/sbeckeriv/mazerunner on toolchain b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "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" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a020477709045ee2ca899d5289475d059baf05330801fc6337e8a1f0cc384803
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a020477709045ee2ca899d5289475d059baf05330801fc6337e8a1f0cc384803", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a020477709045ee2ca899d5289475d059baf05330801fc6337e8a1f0cc384803", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a020477709045ee2ca899d5289475d059baf05330801fc6337e8a1f0cc384803", kill_on_drop: false }`
[INFO] [stdout] a020477709045ee2ca899d5289475d059baf05330801fc6337e8a1f0cc384803
[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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 19390624ce0b4431e94716b470b0b4415d11012f2b9123bc9fef52873bebe4f4
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "19390624ce0b4431e94716b470b0b4415d11012f2b9123bc9fef52873bebe4f4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling getrandom v0.2.0
[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: 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: 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] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.83s
[INFO] running `Command { std: "docker" "inspect" "19390624ce0b4431e94716b470b0b4415d11012f2b9123bc9fef52873bebe4f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19390624ce0b4431e94716b470b0b4415d11012f2b9123bc9fef52873bebe4f4", kill_on_drop: false }`
[INFO] [stdout] 19390624ce0b4431e94716b470b0b4415d11012f2b9123bc9fef52873bebe4f4