[INFO] updating cached repository https://github.com/ianhuezo/rust_room_gen
[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] dfdca0333abb3dcab4fa92e6fa5f0f7b72a3ad62
[INFO] checking ianhuezo/rust_room_gen against master#450abe80f193ccefbfcd48214d70520f2d507f0e for pr-73084
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fianhuezo%2Frust_room_gen" "/workspace/builds/worker-14/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ianhuezo/rust_room_gen on toolchain 450abe80f193ccefbfcd48214d70520f2d507f0e
[INFO] running `"/workspace/cargo-home/bin/cargo" "+450abe80f193ccefbfcd48214d70520f2d507f0e" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/ianhuezo/rust_room_gen
[INFO] finished tweaking git repo https://github.com/ianhuezo/rust_room_gen
[INFO] tweaked toml for git repo https://github.com/ianhuezo/rust_room_gen written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/ianhuezo/rust_room_gen already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+450abe80f193ccefbfcd48214d70520f2d507f0e" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "/opt/rustwide/cargo-home/bin/cargo" "+450abe80f193ccefbfcd48214d70520f2d507f0e" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6545a4d489ec373e37837f93d4a90755fb8c4fd11b04d82d318831ff3143dd59
[INFO] running `"docker" "start" "-a" "6545a4d489ec373e37837f93d4a90755fb8c4fd11b04d82d318831ff3143dd59"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling libc v0.2.70
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking ppv-lite86 v0.2.8
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-iter v0.1.40
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]     Checking rust_room_generator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `std::error::Error`
[INFO] [stderr]   --> src/main.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 | use std::error::Error;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `room`
[INFO] [stderr]    --> src/main.rs:273:9
[INFO] [stderr]     |
[INFO] [stderr] 273 |     let room = Room::create_seed(&rect_size, position);
[INFO] [stderr]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_room`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `maze`
[INFO] [stderr]    --> src/main.rs:274:9
[INFO] [stderr]     |
[INFO] [stderr] 274 |     let maze = Maze::new(&size, false);
[INFO] [stderr]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_maze`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `is_populated`
[INFO] [stderr]    --> src/main.rs:237:36
[INFO] [stderr]     |
[INFO] [stderr] 237 |     pub fn new(map_size: &'a Size, is_populated: bool) -> Self {
[INFO] [stderr]     |                                    ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_populated`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `side_points`
[INFO] [stderr]   --> src/main.rs:61:5
[INFO] [stderr]    |
[INFO] [stderr] 61 |     side_points: VecRangeUSize,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `ref_point`
[INFO] [stderr]   --> src/main.rs:62:5
[INFO] [stderr]    |
[INFO] [stderr] 62 |     ref_point: usize,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `transformed`
[INFO] [stderr]   --> src/main.rs:63:5
[INFO] [stderr]    |
[INFO] [stderr] 63 |     transformed: bool, // transforms rows to cols, cols to rows
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]    --> src/main.rs:156:8
[INFO] [stderr]     |
[INFO] [stderr] 156 |     fn new(position: Position) -> Self {
[INFO] [stderr]     |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::error::Error`
[INFO] [stderr]   --> src/main.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 | use std::error::Error;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `room`
[INFO] [stderr]    --> src/main.rs:273:9
[INFO] [stderr]     |
[INFO] [stderr] 273 |     let room = Room::create_seed(&rect_size, position);
[INFO] [stderr]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_room`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `maze`
[INFO] [stderr]    --> src/main.rs:274:9
[INFO] [stderr]     |
[INFO] [stderr] 274 |     let maze = Maze::new(&size, false);
[INFO] [stderr]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_maze`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `is_populated`
[INFO] [stderr]    --> src/main.rs:237:36
[INFO] [stderr]     |
[INFO] [stderr] 237 |     pub fn new(map_size: &'a Size, is_populated: bool) -> Self {
[INFO] [stderr]     |                                    ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_populated`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `side_points`
[INFO] [stderr]   --> src/main.rs:61:5
[INFO] [stderr]    |
[INFO] [stderr] 61 |     side_points: VecRangeUSize,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `ref_point`
[INFO] [stderr]   --> src/main.rs:62:5
[INFO] [stderr]    |
[INFO] [stderr] 62 |     ref_point: usize,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `transformed`
[INFO] [stderr]   --> src/main.rs:63:5
[INFO] [stderr]    |
[INFO] [stderr] 63 |     transformed: bool, // transforms rows to cols, cols to rows
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]    --> src/main.rs:156:8
[INFO] [stderr]     |
[INFO] [stderr] 156 |     fn new(position: Position) -> Self {
[INFO] [stderr]     |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.01s
[INFO] running `"docker" "inspect" "6545a4d489ec373e37837f93d4a90755fb8c4fd11b04d82d318831ff3143dd59"`
[INFO] running `"docker" "rm" "-f" "6545a4d489ec373e37837f93d4a90755fb8c4fd11b04d82d318831ff3143dd59"`
[INFO] [stdout] 6545a4d489ec373e37837f93d4a90755fb8c4fd11b04d82d318831ff3143dd59