[INFO] cloning 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" "clone" "--bare" "https://github.com/thomasdelrue/rusty-mazes" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthomasdelrue%2Frusty-mazes", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthomasdelrue%2Frusty-mazes'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fa5c1a29e24985e6db66afbb07c6070a6cfb04d2
[INFO] testing thomasdelrue/rusty-mazes against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthomasdelrue%2Frusty-mazes" "/workspace/builds/worker-50/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-50/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/thomasdelrue/rusty-mazes on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "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-50/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2149628bee868abb1788b9b66846eff16f67ca89772b65a442c7d2d50431fab8
[INFO] running `Command { std: "docker" "start" "-a" "2149628bee868abb1788b9b66846eff16f67ca89772b65a442c7d2d50431fab8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2149628bee868abb1788b9b66846eff16f67ca89772b65a442c7d2d50431fab8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2149628bee868abb1788b9b66846eff16f67ca89772b65a442c7d2d50431fab8", kill_on_drop: false }`
[INFO] [stdout] 2149628bee868abb1788b9b66846eff16f67ca89772b65a442c7d2d50431fab8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 60d8929dabdd57d827a7f90439309f41bb72f98f69a8e8b4608bd39857701f70
[INFO] running `Command { std: "docker" "start" "-a" "60d8929dabdd57d827a7f90439309f41bb72f98f69a8e8b4608bd39857701f70", 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 29.72s
[INFO] running `Command { std: "docker" "inspect" "60d8929dabdd57d827a7f90439309f41bb72f98f69a8e8b4608bd39857701f70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60d8929dabdd57d827a7f90439309f41bb72f98f69a8e8b4608bd39857701f70", kill_on_drop: false }`
[INFO] [stdout] 60d8929dabdd57d827a7f90439309f41bb72f98f69a8e8b4608bd39857701f70
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ae544b2ea955e37779d6e0b3edfa2b2698af7c4582b74f7803b79f9eb7aea0b6
[INFO] running `Command { std: "docker" "start" "-a" "ae544b2ea955e37779d6e0b3edfa2b2698af7c4582b74f7803b79f9eb7aea0b6", 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 4.75s
[INFO] running `Command { std: "docker" "inspect" "ae544b2ea955e37779d6e0b3edfa2b2698af7c4582b74f7803b79f9eb7aea0b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae544b2ea955e37779d6e0b3edfa2b2698af7c4582b74f7803b79f9eb7aea0b6", kill_on_drop: false }`
[INFO] [stdout] ae544b2ea955e37779d6e0b3edfa2b2698af7c4582b74f7803b79f9eb7aea0b6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ad4bde435bab1740cfc22c19eeae9c435247164ec11e5aa4c04f1386d565b23a
[INFO] running `Command { std: "docker" "start" "-a" "ad4bde435bab1740cfc22c19eeae9c435247164ec11e5aa4c04f1386d565b23a", 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/cell.rs:34:12
[INFO] [stderr]    |
[INFO] [stderr] 34 |     pub fn unlink(&mut self, other: &mut Cell, bidi: bool) {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `links`
[INFO] [stderr]   --> src/cell.rs:41:12
[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 0.40s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mazes-a6e8f36d73d9f54c)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test cell::tests::test_bidi_link ... ok
[INFO] [stdout] test cell::tests::test_is_linked_to ... ok
[INFO] [stdout] test cell::tests::test_links ... ok
[INFO] [stdout] test cell::tests::test_pos ... ok
[INFO] [stdout] test grid::tests::test_random_cell ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ad4bde435bab1740cfc22c19eeae9c435247164ec11e5aa4c04f1386d565b23a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad4bde435bab1740cfc22c19eeae9c435247164ec11e5aa4c04f1386d565b23a", kill_on_drop: false }`
[INFO] [stdout] ad4bde435bab1740cfc22c19eeae9c435247164ec11e5aa4c04f1386d565b23a