[INFO] updating cached repository https://github.com/thomasdelrue/rusty-mazes
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fa5c1a29e24985e6db66afbb07c6070a6cfb04d2
[INFO] testing thomasdelrue/rusty-mazes/fa5c1a29e24985e6db66afbb07c6070a6cfb04d2 against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthomasdelrue%2Frusty-mazes" "/workspace/builds/worker-46/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-46/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/thomasdelrue/rusty-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/thomasdelrue/rusty-mazes
[INFO] finished tweaking git repo https://github.com/thomasdelrue/rusty-mazes
[INFO] tweaked toml for git repo https://github.com/thomasdelrue/rusty-mazes written to /workspace/builds/worker-46/source/Cargo.toml
[INFO] crate git repo https://github.com/thomasdelrue/rusty-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-46/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/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] eb1a787473cd50bcdddb75270d063e1eaed40e1df2f6055f8678533e4151e073
[INFO] running `Command { std: "docker" "start" "-a" "eb1a787473cd50bcdddb75270d063e1eaed40e1df2f6055f8678533e4151e073", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eb1a787473cd50bcdddb75270d063e1eaed40e1df2f6055f8678533e4151e073", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb1a787473cd50bcdddb75270d063e1eaed40e1df2f6055f8678533e4151e073", kill_on_drop: false }`
[INFO] [stdout] eb1a787473cd50bcdddb75270d063e1eaed40e1df2f6055f8678533e4151e073
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/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] a28446622ba96125dcf6ec71d5ee85882f1f4c6ed3ac251acdfc83a035ce2fcb
[INFO] running `Command { std: "docker" "start" "-a" "a28446622ba96125dcf6ec71d5ee85882f1f4c6ed3ac251acdfc83a035ce2fcb", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.95
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling rand_core v0.6.2
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling rand v0.8.3
[INFO] [stderr]    Compiling mazes v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `links`
[INFO] [stdout]  --> src/cell.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     links: HashMap<(u8, u8), bool>,
[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: `pos`
[INFO] [stdout]   --> src/cell.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub fn pos(&self) -> (u8, u8) {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `link`
[INFO] [stdout]   --> src/cell.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 27 |     pub fn link(&mut self, other: &mut Cell, bidi: bool) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unlink`
[INFO] [stdout]   --> src/cell.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn unlink(&mut self, other: &mut Cell, bidi: bool) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `links`
[INFO] [stdout]   --> src/cell.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn links(&self) -> hash_map::Keys<(u8, u8), bool> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_linked_to`
[INFO] [stdout]   --> src/cell.rs:45:12
[INFO] [stdout]    |
[INFO] [stdout] 45 |     pub fn is_linked_to(&self, other: &Cell) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `random_cell`
[INFO] [stdout]   --> src/grid.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub fn random_cell(&self) -> &Cell {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `size`
[INFO] [stdout]   --> src/grid.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub fn size(&self) -> usize {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.02s
[INFO] running `Command { std: "docker" "inspect" "a28446622ba96125dcf6ec71d5ee85882f1f4c6ed3ac251acdfc83a035ce2fcb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a28446622ba96125dcf6ec71d5ee85882f1f4c6ed3ac251acdfc83a035ce2fcb", kill_on_drop: false }`
[INFO] [stdout] a28446622ba96125dcf6ec71d5ee85882f1f4c6ed3ac251acdfc83a035ce2fcb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/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] 4befab1458d02f6db2f0ee94409debe545337ae523a61743bb25f71952f49196
[INFO] running `Command { std: "docker" "start" "-a" "4befab1458d02f6db2f0ee94409debe545337ae523a61743bb25f71952f49196", kill_on_drop: false }`
[INFO] [stderr]    Compiling mazes v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `unlink`
[INFO] [stdout]   --> src/cell.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn unlink(&mut self, other: &mut Cell, bidi: bool) {
[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: `links`
[INFO] [stdout]   --> src/cell.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn links(&self) -> hash_map::Keys<(u8, u8), bool> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `size`
[INFO] [stdout]   --> src/grid.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub fn size(&self) -> usize {
[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 0.87s
[INFO] running `Command { std: "docker" "inspect" "4befab1458d02f6db2f0ee94409debe545337ae523a61743bb25f71952f49196", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4befab1458d02f6db2f0ee94409debe545337ae523a61743bb25f71952f49196", kill_on_drop: false }`
[INFO] [stdout] 4befab1458d02f6db2f0ee94409debe545337ae523a61743bb25f71952f49196
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/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] 6a5a4a252dc55b874bb8b41f374053e3f9d60de15a2e6bbd7d2a1306f6711f10
[INFO] running `Command { std: "docker" "start" "-a" "6a5a4a252dc55b874bb8b41f374053e3f9d60de15a2e6bbd7d2a1306f6711f10", kill_on_drop: false }`
[INFO] [stderr] warning: associated function is never used: `unlink`
[INFO] [stdout] 
[INFO] [stderr]   --> src/cell.rs:34:12
[INFO] [stdout] running 5 tests
[INFO] [stderr]    |
[INFO] [stdout] test cell::tests::test_bidi_link ... ok
[INFO] [stderr] 34 |     pub fn unlink(&mut self, other: &mut Cell, bidi: bool) {
[INFO] [stdout] test cell::tests::test_links ... ok
[INFO] [stderr]    |            ^^^^^^
[INFO] [stdout] test cell::tests::test_is_linked_to ... ok
[INFO] [stderr]    |
[INFO] [stdout] test cell::tests::test_pos ... ok
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] test grid::tests::test_random_cell ... ok
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stderr] warning: associated function is never used: `links`
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]   --> src/cell.rs:41:12
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stderr] 41 |     pub fn links(&self) -> hash_map::Keys<(u8, u8), bool> {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `size`
[INFO] [stderr]   --> src/grid.rs:36:12
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn size(&self) -> usize {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `mazes` (bin "mazes" test) generated 3 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mazes-37cae71f84af014f)
[INFO] running `Command { std: "docker" "inspect" "6a5a4a252dc55b874bb8b41f374053e3f9d60de15a2e6bbd7d2a1306f6711f10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a5a4a252dc55b874bb8b41f374053e3f9d60de15a2e6bbd7d2a1306f6711f10", kill_on_drop: false }`
[INFO] [stdout] 6a5a4a252dc55b874bb8b41f374053e3f9d60de15a2e6bbd7d2a1306f6711f10