[INFO] cloning repository https://github.com/HellFelix/chess_backend
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/HellFelix/chess_backend" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHellFelix%2Fchess_backend", kill_on_drop: false }`
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[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f61bd6e9ceda849ea195509d1bb7157e330031e9
[INFO] fixing HellFelix/chess_backend against try#622891a4e29178280638a6b63a8908bde2c0c854+cargoflags=-Zfix-edition=start=2015 for pr-157817-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHellFelix%2Fchess_backend" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/HellFelix/chess_backend
[INFO] finished tweaking git repo https://github.com/HellFelix/chess_backend
[INFO] tweaked toml for git repo https://github.com/HellFelix/chess_backend written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/HellFelix/chess_backend on toolchain 622891a4e29178280638a6b63a8908bde2c0c854
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/HellFelix/chess_backend already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "89b5fb24cd01aad36d4801608e6941e81367b5dd0fbc5e84f3df03c76a97742a" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
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[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling prettyplease v0.2.20
[INFO] [stderr]    Compiling rustix v0.38.34
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]    Compiling linux-raw-sys v0.4.14
[INFO] [stderr]    Compiling regex-syntax v0.8.4
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[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]     Checking regex-automata v0.4.7
[INFO] [stderr]    Compiling syn v2.0.68
[INFO] [stderr]    Compiling cexpr v0.6.0
[INFO] [stderr]    Compiling which v4.4.2
[INFO] [stderr]     Checking regex v1.10.5
[INFO] [stderr]     Checking env_filter v0.1.2
[INFO] [stderr]     Checking env_logger v0.11.5
[INFO] [stderr]    Compiling chess_backend v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: chess_backend@0.1.0: c_lib/movegen.c: In function 'generateAttackTargets':
[INFO] [stderr] warning: chess_backend@0.1.0: c_lib/movegen.c:81:17: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare]
[INFO] [stderr] warning: chess_backend@0.1.0:    81 |   for (i = 0; i < king_arr->size; i++) {
[INFO] [stderr] warning: chess_backend@0.1.0:       |                 ^
[INFO] [stderr] warning: chess_backend@0.1.0: c_lib/movegen.c:85:17: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare]
[INFO] [stderr] warning: chess_backend@0.1.0:    85 |   for (i = 0; i < queen_arr->size; i++) {
[INFO] [stderr] warning: chess_backend@0.1.0:       |                 ^
[INFO] [stderr] warning: chess_backend@0.1.0: c_lib/movegen.c:89:17: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare]
[INFO] [stderr] warning: chess_backend@0.1.0:    89 |   for (i = 0; i < bishop_arr->size; i++) {
[INFO] [stderr] warning: chess_backend@0.1.0:       |                 ^
[INFO] [stderr] warning: chess_backend@0.1.0: c_lib/movegen.c:93:17: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare]
[INFO] [stderr] warning: chess_backend@0.1.0:    93 |   for (i = 0; i < knight_arr->size; i++) {
[INFO] [stderr] warning: chess_backend@0.1.0:       |                 ^
[INFO] [stderr] warning: chess_backend@0.1.0: c_lib/movegen.c:97:17: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare]
[INFO] [stderr] warning: chess_backend@0.1.0:    97 |   for (i = 0; i < rook_arr->size; i++) {
[INFO] [stderr] warning: chess_backend@0.1.0:       |                 ^
[INFO] [stderr] warning: chess_backend@0.1.0: c_lib/movegen.c:101:17: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare]
[INFO] [stderr] warning: chess_backend@0.1.0:   101 |   for (i = 0; i < pawn_arr->size; i++) {
[INFO] [stderr] warning: chess_backend@0.1.0:       |                 ^
[INFO] [stderr] warning: chess_backend@0.1.0: c_lib/targets/sliders.c: In function 'init_sliders_attacks':
[INFO] [stderr] warning: chess_backend@0.1.0: c_lib/targets/sliders.c:312:30: warning: suggest parentheses around '-' inside '>>' [-Wparentheses]
[INFO] [stderr] warning: chess_backend@0.1.0:   312 |                           64 - bishop_rellevant_bits[square];
[INFO] [stderr] warning: chess_backend@0.1.0:       |                           ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stderr] warning: chess_backend@0.1.0: c_lib/targets/sliders.c:322:51: warning: suggest parentheses around '-' inside '>>' [-Wparentheses]
[INFO] [stderr] warning: chess_backend@0.1.0:   322 |             occupancy * rook_magics[square] >> 64 - rook_rellevant_bits[square];
[INFO] [stderr] warning: chess_backend@0.1.0:       |                                                ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] warning: unused import: `utils::fen::*`
[INFO] [stdout]  --> src/lib.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use utils::fen::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `utils::fen::*`
[INFO] [stdout]  --> src/lib.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use utils::fen::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `ChessMoveBase` is more private than the item `board::<impl bitboard_base>::get_pseudo_legal_moves`
[INFO] [stdout]    --> src/board.rs:378:5
[INFO] [stdout]     |
[INFO] [stdout] 378 | /     pub fn get_pseudo_legal_moves(
[INFO] [stdout] 379 | |         &self,
[INFO] [stdout] 380 | |         colour: Colour,
[INFO] [stdout] 381 | |         killer_square: i32,
[INFO] [stdout] 382 | |     ) -> Vec<(ChessMoveBase, Option<MutateFunction>)> {
[INFO] [stdout]     | |_____________________________________________________^ method `board::<impl bitboard_base>::get_pseudo_legal_moves` is reachable at visibility `pub`
[INFO] [stdout]     |
[INFO] [stdout] note: but type `ChessMoveBase` is only usable at visibility `pub(self)`
[INFO] [stdout]    --> src/board.rs:471:1
[INFO] [stdout]     |
[INFO] [stdout] 471 | struct ChessMoveBase {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `ChessMoveBase` is more private than the item `ChessMove::from_base`
[INFO] [stdout]    --> src/board.rs:545:5
[INFO] [stdout]     |
[INFO] [stdout] 545 | /     pub fn from_base(
[INFO] [stdout] 546 | |         base: ChessMoveBase,
[INFO] [stdout] 547 | |         board: &Board,
[INFO] [stdout] 548 | |         castling_rights: castling_rights,
[INFO] [stdout] ...   |
[INFO] [stdout] 551 | |         mutate_function: Option<MutateFunction>,
[INFO] [stdout] 552 | |     ) -> Option<Self> {
[INFO] [stdout]     | |_____________________^ associated function `ChessMove::from_base` is reachable at visibility `pub`
[INFO] [stdout]     |
[INFO] [stdout] note: but type `ChessMoveBase` is only usable at visibility `pub(self)`
[INFO] [stdout]    --> src/board.rs:471:1
[INFO] [stdout]     |
[INFO] [stdout] 471 | struct ChessMoveBase {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `EMPTY_BOARD` is never used
[INFO] [stdout]  --> src/utils/fen.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub const EMPTY_BOARD: &str = "8/8/8/8/8/8/8/8 w - - ";
[INFO] [stdout]   |           ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `starting_sqaure`, `destination_square`, and `piece` are never read
[INFO] [stdout]    --> src/board.rs:472:5
[INFO] [stdout]     |
[INFO] [stdout] 471 | struct ChessMoveBase {
[INFO] [stdout]     |        ------------- fields in this struct
[INFO] [stdout] 472 |     starting_sqaure: Option<i32>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 473 |     destination_square: Option<i32>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 474 |     piece: Piece,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ChessMoveBase` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `base` is never read
[INFO] [stdout]    --> src/board.rs:541:5
[INFO] [stdout]     |
[INFO] [stdout] 540 | pub struct ChessMove {
[INFO] [stdout]     |            --------- field in this struct
[INFO] [stdout] 541 |     base: ChessMoveBase,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ChessMove` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_ranks` is never used
[INFO] [stdout]    --> src/board.rs:799:12
[INFO] [stdout]     |
[INFO] [stdout] 797 | impl BitBoard {
[INFO] [stdout]     | ------------- associated function in this implementation
[INFO] [stdout] 798 |     // Ranks should be ordered 8-1 and squares in rank should be in order a-h
[INFO] [stdout] 799 |     pub fn from_ranks(mut ranks: [[u8; 8]; 8]) -> Self {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `ChessMoveBase` is more private than the item `board::<impl bitboard_base>::get_pseudo_legal_moves`
[INFO] [stdout]    --> src/board.rs:378:5
[INFO] [stdout]     |
[INFO] [stdout] 378 | /     pub fn get_pseudo_legal_moves(
[INFO] [stdout] 379 | |         &self,
[INFO] [stdout] 380 | |         colour: Colour,
[INFO] [stdout] 381 | |         killer_square: i32,
[INFO] [stdout] 382 | |     ) -> Vec<(ChessMoveBase, Option<MutateFunction>)> {
[INFO] [stdout]     | |_____________________________________________________^ method `board::<impl bitboard_base>::get_pseudo_legal_moves` is reachable at visibility `pub`
[INFO] [stdout]     |
[INFO] [stdout] note: but type `ChessMoveBase` is only usable at visibility `pub(self)`
[INFO] [stdout]    --> src/board.rs:471:1
[INFO] [stdout]     |
[INFO] [stdout] 471 | struct ChessMoveBase {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `ChessMoveBase` is more private than the item `ChessMove::from_base`
[INFO] [stdout]    --> src/board.rs:545:5
[INFO] [stdout]     |
[INFO] [stdout] 545 | /     pub fn from_base(
[INFO] [stdout] 546 | |         base: ChessMoveBase,
[INFO] [stdout] 547 | |         board: &Board,
[INFO] [stdout] 548 | |         castling_rights: castling_rights,
[INFO] [stdout] ...   |
[INFO] [stdout] 551 | |         mutate_function: Option<MutateFunction>,
[INFO] [stdout] 552 | |     ) -> Option<Self> {
[INFO] [stdout]     | |_____________________^ associated function `ChessMove::from_base` is reachable at visibility `pub`
[INFO] [stdout]     |
[INFO] [stdout] note: but type `ChessMoveBase` is only usable at visibility `pub(self)`
[INFO] [stdout]    --> src/board.rs:471:1
[INFO] [stdout]     |
[INFO] [stdout] 471 | struct ChessMoveBase {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `EMPTY_BOARD` is never used
[INFO] [stdout]  --> src/utils/fen.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub const EMPTY_BOARD: &str = "8/8/8/8/8/8/8/8 w - - ";
[INFO] [stdout]   |           ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `starting_sqaure`, `destination_square`, and `piece` are never read
[INFO] [stdout]    --> src/board.rs:472:5
[INFO] [stdout]     |
[INFO] [stdout] 471 | struct ChessMoveBase {
[INFO] [stdout]     |        ------------- fields in this struct
[INFO] [stdout] 472 |     starting_sqaure: Option<i32>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 473 |     destination_square: Option<i32>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 474 |     piece: Piece,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ChessMoveBase` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `base` is never read
[INFO] [stdout]    --> src/board.rs:541:5
[INFO] [stdout]     |
[INFO] [stdout] 540 | pub struct ChessMove {
[INFO] [stdout]     |            --------- field in this struct
[INFO] [stdout] 541 |     base: ChessMoveBase,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ChessMove` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_ranks` is never used
[INFO] [stdout]    --> src/board.rs:799:12
[INFO] [stdout]     |
[INFO] [stdout] 797 | impl BitBoard {
[INFO] [stdout]     | ------------- associated function in this implementation
[INFO] [stdout] 798 |     // Ranks should be ordered 8-1 and squares in rank should be in order a-h
[INFO] [stdout] 799 |     pub fn from_ranks(mut ranks: [[u8; 8]; 8]) -> Self {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.04s
[INFO] [stderr] crater-edition-check: all finished
[INFO] running `Command { std: "docker" "inspect" "89b5fb24cd01aad36d4801608e6941e81367b5dd0fbc5e84f3df03c76a97742a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89b5fb24cd01aad36d4801608e6941e81367b5dd0fbc5e84f3df03c76a97742a", kill_on_drop: false }`
[INFO] [stdout] 89b5fb24cd01aad36d4801608e6941e81367b5dd0fbc5e84f3df03c76a97742a
