[INFO] cloning repository https://github.com/Swepedia/mazes
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Swepedia/mazes" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSwepedia%2Fmazes", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSwepedia%2Fmazes'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f671cc72fac81e3c1bce0bb2892250052a34d6a0
[INFO] testing Swepedia/mazes against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSwepedia%2Fmazes" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Swepedia/mazes on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Swepedia/mazes
[INFO] finished tweaking git repo https://github.com/Swepedia/mazes
[INFO] tweaked toml for git repo https://github.com/Swepedia/mazes written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/Swepedia/mazes already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "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-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1e4698f5fafee5b405f190008f1e6f29f4ff7affdd32d8ddb1820b14bf41164a
[INFO] running `Command { std: "docker" "start" "-a" "1e4698f5fafee5b405f190008f1e6f29f4ff7affdd32d8ddb1820b14bf41164a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1e4698f5fafee5b405f190008f1e6f29f4ff7affdd32d8ddb1820b14bf41164a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e4698f5fafee5b405f190008f1e6f29f4ff7affdd32d8ddb1820b14bf41164a", kill_on_drop: false }`
[INFO] [stdout] 1e4698f5fafee5b405f190008f1e6f29f4ff7affdd32d8ddb1820b14bf41164a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 19c6d74722a9229962efa1dd9d718fec5da6ad14edefbf9e4ff90c1e594a9d45
[INFO] running `Command { std: "docker" "start" "-a" "19c6d74722a9229962efa1dd9d718fec5da6ad14edefbf9e4ff90c1e594a9d45", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling bytemuck v1.5.1
[INFO] [stderr]    Compiling fixedbitset v0.2.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.3
[INFO] [stderr]    Compiling memoffset v0.6.3
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling indexmap v1.6.2
[INFO] [stderr]    Compiling gif v0.11.2
[INFO] [stderr]    Compiling png v0.16.8
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling petgraph v0.5.1
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling rand_core v0.6.2
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.3
[INFO] [stderr]    Compiling crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling rand v0.8.3
[INFO] [stderr]    Compiling crossbeam-deque v0.8.0
[INFO] [stderr]    Compiling jpeg-decoder v0.1.22
[INFO] [stderr]    Compiling tiff v0.6.1
[INFO] [stderr]    Compiling image v0.23.14
[INFO] [stderr]    Compiling labyrinth_loper v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `binary_tree`
[INFO] [stdout]   --> src/main.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn binary_tree(input_graph: &mut Grid) -> &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: `sidewinder`
[INFO] [stdout]   --> src/main.rs:33:4
[INFO] [stdout]    |
[INFO] [stdout] 33 | fn sidewinder(input_graph: &mut Grid) -> &mut Grid {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `each_row`
[INFO] [stdout]   --> src/grid.rs:52:12
[INFO] [stdout]    |
[INFO] [stdout] 52 |     pub fn each_row(&self) -> Vec<Vec<NodeIndex>> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `print_png`
[INFO] [stdout]    --> src/grid.rs:100:12
[INFO] [stdout]     |
[INFO] [stdout] 100 |     pub fn print_png(&self, size: u32) {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.28s
[INFO] running `Command { std: "docker" "inspect" "19c6d74722a9229962efa1dd9d718fec5da6ad14edefbf9e4ff90c1e594a9d45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19c6d74722a9229962efa1dd9d718fec5da6ad14edefbf9e4ff90c1e594a9d45", kill_on_drop: false }`
[INFO] [stdout] 19c6d74722a9229962efa1dd9d718fec5da6ad14edefbf9e4ff90c1e594a9d45
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dfbf26d4fec16f4401f85f5755a6ee2d1ff70bf59db0609ddf4990af6ac50500
[INFO] running `Command { std: "docker" "start" "-a" "dfbf26d4fec16f4401f85f5755a6ee2d1ff70bf59db0609ddf4990af6ac50500", kill_on_drop: false }`
[INFO] [stderr]    Compiling labyrinth_loper v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `binary_tree`
[INFO] [stdout]   --> src/main.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn binary_tree(input_graph: &mut Grid) -> &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: `sidewinder`
[INFO] [stdout]   --> src/main.rs:33:4
[INFO] [stdout]    |
[INFO] [stdout] 33 | fn sidewinder(input_graph: &mut Grid) -> &mut Grid {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `each_row`
[INFO] [stdout]   --> src/grid.rs:52:12
[INFO] [stdout]    |
[INFO] [stdout] 52 |     pub fn each_row(&self) -> Vec<Vec<NodeIndex>> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `print_png`
[INFO] [stdout]    --> src/grid.rs:100:12
[INFO] [stdout]     |
[INFO] [stdout] 100 |     pub fn print_png(&self, size: u32) {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `Command { std: "docker" "inspect" "dfbf26d4fec16f4401f85f5755a6ee2d1ff70bf59db0609ddf4990af6ac50500", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfbf26d4fec16f4401f85f5755a6ee2d1ff70bf59db0609ddf4990af6ac50500", kill_on_drop: false }`
[INFO] [stdout] dfbf26d4fec16f4401f85f5755a6ee2d1ff70bf59db0609ddf4990af6ac50500
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5d16842ba465175e33ac5ba810ef708b80b69ac80a6786486b6f837fea030a30
[INFO] running `Command { std: "docker" "start" "-a" "5d16842ba465175e33ac5ba810ef708b80b69ac80a6786486b6f837fea030a30", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: function is never used: `binary_tree`
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> src/main.rs:16:4
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 16 | fn binary_tree(input_graph: &mut Grid) -> &mut Grid {
[INFO] [stdout] 
[INFO] [stderr]    |    ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sidewinder`
[INFO] [stderr]   --> src/main.rs:33:4
[INFO] [stderr]    |
[INFO] [stderr] 33 | fn sidewinder(input_graph: &mut Grid) -> &mut Grid {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `each_row`
[INFO] [stderr]   --> src/grid.rs:52:12
[INFO] [stderr]    |
[INFO] [stderr] 52 |     pub fn each_row(&self) -> Vec<Vec<NodeIndex>> {
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `print_png`
[INFO] [stderr]    --> src/grid.rs:100:12
[INFO] [stderr]     |
[INFO] [stderr] 100 |     pub fn print_png(&self, size: u32) {
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `labyrinth_loper` (bin "labyrinth_loper" test) generated 4 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/labyrinth_loper-b877a9c0e0ff37aa)
[INFO] running `Command { std: "docker" "inspect" "5d16842ba465175e33ac5ba810ef708b80b69ac80a6786486b6f837fea030a30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d16842ba465175e33ac5ba810ef708b80b69ac80a6786486b6f837fea030a30", kill_on_drop: false }`
[INFO] [stdout] 5d16842ba465175e33ac5ba810ef708b80b69ac80a6786486b6f837fea030a30