[INFO] fetching crate amaze 0.1.1...
[INFO] checking amaze-0.1.1 against try#18c1d185ac7a6a3bf399296b35e4b2736809a756 for pr-146972
[INFO] extracting crate amaze 0.1.1 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate amaze 0.1.1
[INFO] finished tweaking crates.io crate amaze 0.1.1
[INFO] tweaked toml for crates.io crate amaze 0.1.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate amaze 0.1.1 on toolchain 18c1d185ac7a6a3bf399296b35e4b2736809a756
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+18c1d185ac7a6a3bf399296b35e4b2736809a756" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+18c1d185ac7a6a3bf399296b35e4b2736809a756" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 16 packages to latest compatible versions
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+18c1d185ac7a6a3bf399296b35e4b2736809a756" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+18c1d185ac7a6a3bf399296b35e4b2736809a756" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d846bf9cca0c4e7e84d4dcf47bfa4733f931b01f652660aa87089039f1541eab
[INFO] running `Command { std: "docker" "start" "-a" "d846bf9cca0c4e7e84d4dcf47bfa4733f931b01f652660aa87089039f1541eab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d846bf9cca0c4e7e84d4dcf47bfa4733f931b01f652660aa87089039f1541eab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d846bf9cca0c4e7e84d4dcf47bfa4733f931b01f652660aa87089039f1541eab", kill_on_drop: false }`
[INFO] [stdout] d846bf9cca0c4e7e84d4dcf47bfa4733f931b01f652660aa87089039f1541eab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "RUSTDOCFLAGS=--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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+18c1d185ac7a6a3bf399296b35e4b2736809a756" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7b681e5637dbfa26274728dc7809b54cd0f565a2258f1846abf98dcd7d8be9e9
[INFO] running `Command { std: "docker" "start" "-a" "7b681e5637dbfa26274728dc7809b54cd0f565a2258f1846abf98dcd7d8be9e9", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.178
[INFO] [stderr]    Compiling zerocopy v0.8.31
[INFO] [stderr]    Compiling indoc v2.0.7
[INFO] [stderr]     Checking getrandom v0.2.16
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking ppv-lite86 v0.2.21
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking amaze v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: methods `set_room`, `has_neighbor`, and `get_neighbor` are never used
[INFO] [stdout]   --> src/room4.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl<Tag> Room4<Tag> {
[INFO] [stdout]    | -------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 33 |     pub fn set_room(&mut self, direction: Direction4, room: Option<RoomIndex>) {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 75 |     pub fn has_neighbor(&mut self, direction: Direction4) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 83 |     pub fn get_neighbor(&mut self, direction: Direction4) -> Option<RoomIndex> {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `len` and `is_empty` are never used
[INFO] [stdout]   --> src/room4_list.rs:65:12
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl<Tag> Room4List<Tag> {
[INFO] [stdout]    | ------------------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 65 |     pub fn len(&self) -> usize {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 70 |     pub fn is_empty(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_mut` is never used
[INFO] [stdout]   --> src/visit_map_2d.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl VisitMap2D {
[INFO] [stdout]    | --------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 34 |     pub fn get_mut(&mut self, coords: GridCoord2D) -> Option<&mut bool> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Room4` is never constructed
[INFO] [stdout]   --> src/room4.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct Room4<Tag = ()> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/room4.rs:22:19
[INFO] [stdout]     |
[INFO] [stdout]  21 | impl<Tag> Room4<Tag> {
[INFO] [stdout]     | -------------------- associated items in this implementation
[INFO] [stdout]  22 |     pub(crate) fn new_empty(index: RoomIndex, tag: Tag) -> Self {
[INFO] [stdout]     |                   ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  33 |     pub fn set_room(&mut self, direction: Direction4, room: Option<RoomIndex>) {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  43 |     pub fn set_north<R: Into<Option<RoomIndex>>>(&mut self, room: R) {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  47 |     pub fn set_south<R: Into<Option<RoomIndex>>>(&mut self, room: R) {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  51 |     pub fn set_east<R: Into<Option<RoomIndex>>>(&mut self, room: R) {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  55 |     pub fn set_west<R: Into<Option<RoomIndex>>>(&mut self, room: R) {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  59 |     pub fn north(&self) -> Option<RoomIndex> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  63 |     pub fn east(&self) -> Option<RoomIndex> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout]  67 |     pub fn south(&self) -> Option<RoomIndex> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  71 |     pub fn west(&self) -> Option<RoomIndex> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout]  75 |     pub fn has_neighbor(&mut self, direction: Direction4) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  79 |     pub fn has_neighbors(&mut self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  83 |     pub fn get_neighbor(&mut self, direction: Direction4) -> Option<RoomIndex> {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  93 |     pub fn doors(&self) -> Door4 {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 111 |     pub fn walls(&self) -> Wall4 {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 116 |     pub fn index(&self) -> RoomIndex {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ensure_index_matches_and_apply` is never used
[INFO] [stdout]    --> src/room4.rs:121:4
[INFO] [stdout]     |
[INFO] [stdout] 121 | fn ensure_index_matches_and_apply(
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RoomIndex` is never constructed
[INFO] [stdout]  --> src/room4_list.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct RoomIndex(NonZeroUsize);
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Room4List` is never constructed
[INFO] [stdout]   --> src/room4_list.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct Room4List<Tag = ()> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `EnsureIndexConsistency` is never used
[INFO] [stdout]   --> src/room4_list.rs:15:18
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub(crate) trait EnsureIndexConsistency<Tag> {
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `push_default`, `push_new`, `len`, `is_empty`, `get`, and `get_mut` are never used
[INFO] [stdout]   --> src/room4_list.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl<Tag> Room4List<Tag> {
[INFO] [stdout]    | ------------------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 28 |     pub fn push_default(&mut self, tag: Tag) -> RoomIndex {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 43 |     pub fn push_new<F>(&mut self, tag: Tag, f: F) -> RoomIndex
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 65 |     pub fn len(&self) -> usize {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 70 |     pub fn is_empty(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 74 |     pub fn get(&self, index: RoomIndex) -> Option<&Room4<Tag>> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 79 |     pub fn get_mut(&mut self, index: RoomIndex) -> Option<&mut Room4<Tag>> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from` is never used
[INFO] [stdout]    --> src/room4_list.rs:116:12
[INFO] [stdout]     |
[INFO] [stdout] 115 | impl RoomIndex {
[INFO] [stdout]     | -------------- associated function in this implementation
[INFO] [stdout] 116 |     pub fn from(value: usize) -> Option<RoomIndex> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Room4ListIntoIterator` is never constructed
[INFO] [stdout]    --> src/room4_list.rs:144:12
[INFO] [stdout]     |
[INFO] [stdout] 144 | pub struct Room4ListIntoIterator<Tag> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_mut` is never used
[INFO] [stdout]   --> src/visit_map_2d.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl VisitMap2D {
[INFO] [stdout]    | --------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 34 |     pub fn get_mut(&mut self, coords: GridCoord2D) -> Option<&mut bool> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.79s
[INFO] running `Command { std: "docker" "inspect" "7b681e5637dbfa26274728dc7809b54cd0f565a2258f1846abf98dcd7d8be9e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b681e5637dbfa26274728dc7809b54cd0f565a2258f1846abf98dcd7d8be9e9", kill_on_drop: false }`
[INFO] [stdout] 7b681e5637dbfa26274728dc7809b54cd0f565a2258f1846abf98dcd7d8be9e9
