[INFO] updating cached repository https://github.com/erewok/milos-mazes-rs
[INFO] running `"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"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 91bd949e941f0bad4028af6f764f083bf36af106
[INFO] testing erewok/milos-mazes-rs against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ferewok%2Fmilos-mazes-rs" "/workspace/builds/worker-0/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/erewok/milos-mazes-rs on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/erewok/milos-mazes-rs
[INFO] finished tweaking git repo https://github.com/erewok/milos-mazes-rs
[INFO] tweaked toml for git repo https://github.com/erewok/milos-mazes-rs written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/erewok/milos-mazes-rs already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e918b47bcc28d544c4568577cbc2332997c86352407d106d73955af1a296c6af
[INFO] running `"docker" "start" "-a" "e918b47bcc28d544c4568577cbc2332997c86352407d106d73955af1a296c6af"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]    Compiling ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling sw-composite v0.7.6
[INFO] [stderr]    Compiling typed-arena v2.0.1
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling servo-freetype-sys v4.0.5
[INFO] [stderr]    Compiling expat-sys v2.1.6
[INFO] [stderr]    Compiling servo-fontconfig-sys v4.0.9
[INFO] [stderr]    Compiling c2-chacha v0.2.3
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling dirs-sys v0.3.4
[INFO] [stderr]    Compiling freetype v0.4.1
[INFO] [stderr]    Compiling servo-fontconfig v0.4.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling dirs v2.0.2
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling euclid v0.20.7
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling lyon_geom v0.14.1
[INFO] [stderr]    Compiling lyon_geom v0.15.0
[INFO] [stderr]    Compiling lyon_path v0.14.0
[INFO] [stderr]    Compiling font-kit v0.5.0
[INFO] [stderr]    Compiling raqote v0.7.13
[INFO] [stderr]    Compiling milos-mazes v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: cannot borrow `cll` as mutable because it is also borrowed as immutable
[INFO] [stderr]   --> src/algorithms.rs:66:21
[INFO] [stderr]    |
[INFO] [stderr] 65 |                     let east_cell = cll.east.as_ref().expect("should be some");
[INFO] [stderr]    |                                     -------- immutable borrow occurs here
[INFO] [stderr] 66 |                     cll.link((east_cell.row, east_cell.column));
[INFO] [stderr]    |                     ^^^       ------------- immutable borrow later used here
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     mutable borrow occurs here
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stderr]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stderr]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `size`
[INFO] [stderr]    --> src/grid.rs:111:5
[INFO] [stderr]     |
[INFO] [stderr] 111 |     pub fn size(&self) -> i32 {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `random_cell`
[INFO] [stderr]    --> src/grid.rs:115:5
[INFO] [stderr]     |
[INFO] [stderr] 115 |     pub fn random_cell(&self) -> &cell::Cell {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.35s
[INFO] running `"docker" "inspect" "e918b47bcc28d544c4568577cbc2332997c86352407d106d73955af1a296c6af"`
[INFO] running `"docker" "rm" "-f" "e918b47bcc28d544c4568577cbc2332997c86352407d106d73955af1a296c6af"`
[INFO] [stdout] e918b47bcc28d544c4568577cbc2332997c86352407d106d73955af1a296c6af
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 890c49b38d2992ede4737cf3d678d0e3f4536b48baba7ff8fc7b63b6f34944db
[INFO] running `"docker" "start" "-a" "890c49b38d2992ede4737cf3d678d0e3f4536b48baba7ff8fc7b63b6f34944db"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling milos-mazes v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: cannot borrow `cll` as mutable because it is also borrowed as immutable
[INFO] [stderr]   --> src/algorithms.rs:66:21
[INFO] [stderr]    |
[INFO] [stderr] 65 |                     let east_cell = cll.east.as_ref().expect("should be some");
[INFO] [stderr]    |                                     -------- immutable borrow occurs here
[INFO] [stderr] 66 |                     cll.link((east_cell.row, east_cell.column));
[INFO] [stderr]    |                     ^^^       ------------- immutable borrow later used here
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     mutable borrow occurs here
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stderr]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stderr]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `size`
[INFO] [stderr]    --> src/grid.rs:111:5
[INFO] [stderr]     |
[INFO] [stderr] 111 |     pub fn size(&self) -> i32 {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `random_cell`
[INFO] [stderr]    --> src/grid.rs:115:5
[INFO] [stderr]     |
[INFO] [stderr] 115 |     pub fn random_cell(&self) -> &cell::Cell {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.77s
[INFO] running `"docker" "inspect" "890c49b38d2992ede4737cf3d678d0e3f4536b48baba7ff8fc7b63b6f34944db"`
[INFO] running `"docker" "rm" "-f" "890c49b38d2992ede4737cf3d678d0e3f4536b48baba7ff8fc7b63b6f34944db"`
[INFO] [stdout] 890c49b38d2992ede4737cf3d678d0e3f4536b48baba7ff8fc7b63b6f34944db
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7119537f4c61cceb2e625f222529a716db488c51ce4f85d9ab42526a445fe31c
[INFO] running `"docker" "start" "-a" "7119537f4c61cceb2e625f222529a716db488c51ce4f85d9ab42526a445fe31c"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: cannot borrow `cll` as mutable because it is also borrowed as immutable
[INFO] [stderr]   --> src/algorithms.rs:66:21
[INFO] [stderr]    |
[INFO] [stderr] 65 |                     let east_cell = cll.east.as_ref().expect("should be some");
[INFO] [stderr]    |                                     -------- immutable borrow occurs here
[INFO] [stderr] 66 |                     cll.link((east_cell.row, east_cell.column));
[INFO] [stderr]    |                     ^^^       ------------- immutable borrow later used here
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     mutable borrow occurs here
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stderr]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stderr]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `size`
[INFO] [stderr]    --> src/grid.rs:111:5
[INFO] [stderr]     |
[INFO] [stderr] 111 |     pub fn size(&self) -> i32 {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `random_cell`
[INFO] [stderr]    --> src/grid.rs:115:5
[INFO] [stderr]     |
[INFO] [stderr] 115 |     pub fn random_cell(&self) -> &cell::Cell {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/milos_mazes-d10e1bf37ff88389
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "7119537f4c61cceb2e625f222529a716db488c51ce4f85d9ab42526a445fe31c"`
[INFO] running `"docker" "rm" "-f" "7119537f4c61cceb2e625f222529a716db488c51ce4f85d9ab42526a445fe31c"`
[INFO] [stdout] 7119537f4c61cceb2e625f222529a716db488c51ce4f85d9ab42526a445fe31c