[INFO] updating cached repository https://github.com/erewok/milos-mazes-rs [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] 91bd949e941f0bad4028af6f764f083bf36af106 [INFO] checking erewok/milos-mazes-rs against master#4fb54ed484e2239a3e9eff3be17df00d2a162be3 for pr-73345 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ferewok%2Fmilos-mazes-rs" "/workspace/builds/worker-1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/erewok/milos-mazes-rs on toolchain 4fb54ed484e2239a3e9eff3be17df00d2a162be3 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [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-1/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 `Command { std: "/workspace/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] e3dc3d31d7a9bfe3b08831567f70652a0a12adb509c4e92ed02e1103b650c55c [INFO] running `Command { std: "docker" "start" "-a" "e3dc3d31d7a9bfe3b08831567f70652a0a12adb509c4e92ed02e1103b650c55c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "e3dc3d31d7a9bfe3b08831567f70652a0a12adb509c4e92ed02e1103b650c55c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e3dc3d31d7a9bfe3b08831567f70652a0a12adb509c4e92ed02e1103b650c55c", kill_on_drop: false }` [INFO] [stdout] e3dc3d31d7a9bfe3b08831567f70652a0a12adb509c4e92ed02e1103b650c55c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=forbid" "-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@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 37d7478a387383d72c44957b1bb53d9724e063ee29a545e9a989c4060a1f9d58 [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" "37d7478a387383d72c44957b1bb53d9724e063ee29a545e9a989c4060a1f9d58", kill_on_drop: false }` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] Compiling pkg-config v0.3.17 [INFO] [stderr] Compiling cc v1.0.50 [INFO] [stderr] Compiling byteorder v1.3.4 [INFO] [stderr] Compiling getrandom v0.1.14 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Compiling log v0.4.8 [INFO] [stderr] Checking sw-composite v0.7.6 [INFO] [stderr] Checking crc32fast v1.2.0 [INFO] [stderr] Checking dirs-sys v0.3.4 [INFO] [stderr] Checking arrayvec v0.4.12 [INFO] [stderr] Checking euclid v0.20.7 [INFO] [stderr] Checking dirs v2.0.2 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Compiling servo-fontconfig-sys v4.0.9 [INFO] [stderr] Checking deflate v0.7.20 [INFO] [stderr] Checking rand_chacha v0.2.1 [INFO] [stderr] Compiling cmake v0.1.42 [INFO] [stderr] Checking rand v0.7.3 [INFO] [stderr] Checking lyon_geom v0.14.1 [INFO] [stderr] Checking lyon_geom v0.15.0 [INFO] [stderr] Compiling servo-freetype-sys v4.0.5 [INFO] [stderr] Compiling expat-sys v2.1.6 [INFO] [stderr] Checking png v0.15.3 [INFO] [stderr] Checking lyon_path v0.14.0 [INFO] [stderr] Checking freetype v0.4.1 [INFO] [stderr] Checking servo-fontconfig v0.4.0 [INFO] [stderr] Checking font-kit v0.5.0 [INFO] [stderr] Checking raqote v0.7.13 [INFO] [stderr] Checking milos-mazes v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: cannot borrow `cll` as mutable because it is also borrowed as immutable [INFO] [stdout] --> src/algorithms.rs:66:21 [INFO] [stdout] | [INFO] [stdout] 65 | let east_cell = cll.east.as_ref().expect("should be some"); [INFO] [stdout] | -------- immutable borrow occurs here [INFO] [stdout] 66 | cll.link((east_cell.row, east_cell.column)); [INFO] [stdout] | ^^^ ------------- immutable borrow later used here [INFO] [stdout] | | [INFO] [stdout] | mutable borrow occurs here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default [INFO] [stdout] = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future [INFO] [stdout] = note: for more information, see issue #59159 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `size` [INFO] [stdout] --> src/grid.rs:111:12 [INFO] [stdout] | [INFO] [stdout] 111 | pub fn size(&self) -> i32 { [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: `random_cell` [INFO] [stdout] --> src/grid.rs:115:12 [INFO] [stdout] | [INFO] [stdout] 115 | pub fn random_cell(&self) -> &cell::Cell { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: cannot borrow `cll` as mutable because it is also borrowed as immutable [INFO] [stdout] --> src/algorithms.rs:66:21 [INFO] [stdout] | [INFO] [stdout] 65 | let east_cell = cll.east.as_ref().expect("should be some"); [INFO] [stdout] | -------- immutable borrow occurs here [INFO] [stdout] 66 | cll.link((east_cell.row, east_cell.column)); [INFO] [stdout] | ^^^ ------------- immutable borrow later used here [INFO] [stdout] | | [INFO] [stdout] | mutable borrow occurs here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default [INFO] [stdout] = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future [INFO] [stdout] = note: for more information, see issue #59159 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `size` [INFO] [stdout] --> src/grid.rs:111:12 [INFO] [stdout] | [INFO] [stdout] 111 | pub fn size(&self) -> i32 { [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: `random_cell` [INFO] [stdout] --> src/grid.rs:115:12 [INFO] [stdout] | [INFO] [stdout] 115 | pub fn random_cell(&self) -> &cell::Cell { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 23.81s [INFO] running `Command { std: "docker" "inspect" "37d7478a387383d72c44957b1bb53d9724e063ee29a545e9a989c4060a1f9d58", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "37d7478a387383d72c44957b1bb53d9724e063ee29a545e9a989c4060a1f9d58", kill_on_drop: false }` [INFO] [stdout] 37d7478a387383d72c44957b1bb53d9724e063ee29a545e9a989c4060a1f9d58