[INFO] cloning repository https://github.com/divanik/SeatingMafia
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/divanik/SeatingMafia" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdivanik%2FSeatingMafia", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdivanik%2FSeatingMafia'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b893002dcdf16d2b6ef5cd7aadb31f33d5df40ff
[INFO] checking divanik/SeatingMafia against master#8a65ee08296b36342bf7c3cdc15312ccbc357227 for pr-142704
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdivanik%2FSeatingMafia" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/divanik/SeatingMafia on toolchain 8a65ee08296b36342bf7c3cdc15312ccbc357227
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8a65ee08296b36342bf7c3cdc15312ccbc357227" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/divanik/SeatingMafia
[INFO] finished tweaking git repo https://github.com/divanik/SeatingMafia
[INFO] tweaked toml for git repo https://github.com/divanik/SeatingMafia written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/divanik/SeatingMafia 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" "+8a65ee08296b36342bf7c3cdc15312ccbc357227" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8a65ee08296b36342bf7c3cdc15312ccbc357227" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9b6a997387243dde61d7af34aba53919986cd06f5d9cce152040c3d4aa53e046
[INFO] running `Command { std: "docker" "start" "-a" "9b6a997387243dde61d7af34aba53919986cd06f5d9cce152040c3d4aa53e046", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9b6a997387243dde61d7af34aba53919986cd06f5d9cce152040c3d4aa53e046", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b6a997387243dde61d7af34aba53919986cd06f5d9cce152040c3d4aa53e046", kill_on_drop: false }`
[INFO] [stdout] 9b6a997387243dde61d7af34aba53919986cd06f5d9cce152040c3d4aa53e046
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8a65ee08296b36342bf7c3cdc15312ccbc357227" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 966cb98f47e8a9b44d01e0d92641a420e720af24993ecc991d7422fc1540c88a
[INFO] running `Command { std: "docker" "start" "-a" "966cb98f47e8a9b44d01e0d92641a420e720af24993ecc991d7422fc1540c88a", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.4.0
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-bigint v0.4.6
[INFO] [stderr]     Checking num-rational v0.4.2
[INFO] [stderr]     Checking SeatingMafiaRust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `table`
[INFO] [stdout]    --> src/types.rs:151:29
[INFO] [stdout]     |
[INFO] [stdout] 151 | fn remove_player_from_table(table : &mut Table, player : &MoveVector) {
[INFO] [stdout]     |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_table`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `player`
[INFO] [stdout]    --> src/types.rs:151:49
[INFO] [stdout]     |
[INFO] [stdout] 151 | fn remove_player_from_table(table : &mut Table, player : &MoveVector) {
[INFO] [stdout]     |                                                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_player`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `table`
[INFO] [stdout]    --> src/types.rs:151:29
[INFO] [stdout]     |
[INFO] [stdout] 151 | fn remove_player_from_table(table : &mut Table, player : &MoveVector) {
[INFO] [stdout]     |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_table`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `state`
[INFO] [stdout]    --> src/types.rs:155:16
[INFO] [stdout]     |
[INFO] [stdout] 155 | fn change_fine(state : &mut TournamentState, move_vector : &MoveVector) {
[INFO] [stdout]     |                ^^^^^ help: if this is intentional, prefix it with an underscore: `_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `move_vector`
[INFO] [stdout]    --> src/types.rs:155:46
[INFO] [stdout]     |
[INFO] [stdout] 155 | fn change_fine(state : &mut TournamentState, move_vector : &MoveVector) {
[INFO] [stdout]     |                                              ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_move_vector`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `player`
[INFO] [stdout]    --> src/types.rs:151:49
[INFO] [stdout]     |
[INFO] [stdout] 151 | fn remove_player_from_table(table : &mut Table, player : &MoveVector) {
[INFO] [stdout]     |                                                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_player`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Id` is never used
[INFO] [stdout]  --> src/types.rs:5:6
[INFO] [stdout]   |
[INFO] [stdout] 5 | type Id = u8;
[INFO] [stdout]   |      ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Table` is never constructed
[INFO] [stdout]  --> src/types.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Table {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Round` is never used
[INFO] [stdout]   --> src/types.rs:12:6
[INFO] [stdout]    |
[INFO] [stdout] 12 | type Round = Vec<Table>;
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `state`
[INFO] [stdout]    --> src/types.rs:155:16
[INFO] [stdout]     |
[INFO] [stdout] 155 | fn change_fine(state : &mut TournamentState, move_vector : &MoveVector) {
[INFO] [stdout]     |                ^^^^^ help: if this is intentional, prefix it with an underscore: `_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `move_vector`
[INFO] [stdout]    --> src/types.rs:155:46
[INFO] [stdout]     |
[INFO] [stdout] 155 | fn change_fine(state : &mut TournamentState, move_vector : &MoveVector) {
[INFO] [stdout]     |                                              ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_move_vector`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Id` is never used
[INFO] [stdout]  --> src/types.rs:5:6
[INFO] [stdout]   |
[INFO] [stdout] 5 | type Id = u8;
[INFO] [stdout]   |      ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Table` is never constructed
[INFO] [stdout]  --> src/types.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Table {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Round` is never used
[INFO] [stdout]   --> src/types.rs:12:6
[INFO] [stdout]    |
[INFO] [stdout] 12 | type Round = Vec<Table>;
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Tournament` is never used
[INFO] [stdout]   --> src/types.rs:14:6
[INFO] [stdout]    |
[INFO] [stdout] 14 | type Tournament = Vec<Round>;
[INFO] [stdout]    |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `ForbiddenPair` is never used
[INFO] [stdout]   --> src/types.rs:16:6
[INFO] [stdout]    |
[INFO] [stdout] 16 | type ForbiddenPair = (Id, Id);
[INFO] [stdout]    |      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `ForbiddenPairs` is never used
[INFO] [stdout]   --> src/types.rs:18:6
[INFO] [stdout]    |
[INFO] [stdout] 18 | type ForbiddenPairs = BTreeSet<ForbiddenPair>;
[INFO] [stdout]    |      ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Tournament` is never used
[INFO] [stdout]   --> src/types.rs:14:6
[INFO] [stdout]    |
[INFO] [stdout] 14 | type Tournament = Vec<Round>;
[INFO] [stdout]    |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TournamentCharacteristics` is never constructed
[INFO] [stdout]   --> src/types.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | struct TournamentCharacteristics {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `ForbiddenPair` is never used
[INFO] [stdout]   --> src/types.rs:16:6
[INFO] [stdout]    |
[INFO] [stdout] 16 | type ForbiddenPair = (Id, Id);
[INFO] [stdout]    |      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `ForbiddenPairs` is never used
[INFO] [stdout]   --> src/types.rs:18:6
[INFO] [stdout]    |
[INFO] [stdout] 18 | type ForbiddenPairs = BTreeSet<ForbiddenPair>;
[INFO] [stdout]    |      ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TournamentCharacteristics` is never constructed
[INFO] [stdout]   --> src/types.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | struct TournamentCharacteristics {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `PreferredMutualGames` is never used
[INFO] [stdout]   --> src/types.rs:30:6
[INFO] [stdout]    |
[INFO] [stdout] 30 | type PreferredMutualGames = BTreeMap<(Id, Id), (u8, u8)>;
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TournamentState` is never constructed
[INFO] [stdout]   --> src/types.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | struct TournamentState {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Meetings` is never used
[INFO] [stdout]   --> src/types.rs:57:6
[INFO] [stdout]    |
[INFO] [stdout] 57 | type Meetings = BTreeMap<(Id, Id), u8>;
[INFO] [stdout]    |      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `count_meetings_in_tournament` is never used
[INFO] [stdout]   --> src/types.rs:59:4
[INFO] [stdout]    |
[INFO] [stdout] 59 | fn count_meetings_in_tournament(tournament : &Tournament) -> Meetings {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `MutualGames` is never used
[INFO] [stdout]   --> src/types.rs:80:6
[INFO] [stdout]    |
[INFO] [stdout] 80 | type MutualGames = BTreeMap<(Id, Id), u8>;
[INFO] [stdout]    |      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `count_preferred_mutual_games` is never used
[INFO] [stdout]   --> src/types.rs:83:4
[INFO] [stdout]    |
[INFO] [stdout] 83 | fn count_preferred_mutual_games(characteristics : &TournamentCharacteristics) -> PreferredMutualGames {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_fine` is never used
[INFO] [stdout]    --> src/types.rs:125:4
[INFO] [stdout]     |
[INFO] [stdout] 125 | fn get_fine(tournament : &Tournament, characteristics : &TournamentCharacteristics) -> u64 {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MoveVector` is never constructed
[INFO] [stdout]    --> src/types.rs:143:8
[INFO] [stdout]     |
[INFO] [stdout] 143 | struct MoveVector {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `remove_player_from_table` is never used
[INFO] [stdout]    --> src/types.rs:151:4
[INFO] [stdout]     |
[INFO] [stdout] 151 | fn remove_player_from_table(table : &mut Table, player : &MoveVector) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `change_fine` is never used
[INFO] [stdout]    --> src/types.rs:155:4
[INFO] [stdout]     |
[INFO] [stdout] 155 | fn change_fine(state : &mut TournamentState, move_vector : &MoveVector) {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `SeatingMafiaRust` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = help: convert the identifier to snake case: `seating_mafia_rust`
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `PreferredMutualGames` is never used
[INFO] [stdout]   --> src/types.rs:30:6
[INFO] [stdout]    |
[INFO] [stdout] 30 | type PreferredMutualGames = BTreeMap<(Id, Id), (u8, u8)>;
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TournamentState` is never constructed
[INFO] [stdout]   --> src/types.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | struct TournamentState {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Meetings` is never used
[INFO] [stdout]   --> src/types.rs:57:6
[INFO] [stdout]    |
[INFO] [stdout] 57 | type Meetings = BTreeMap<(Id, Id), u8>;
[INFO] [stdout]    |      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `count_meetings_in_tournament` is never used
[INFO] [stdout]   --> src/types.rs:59:4
[INFO] [stdout]    |
[INFO] [stdout] 59 | fn count_meetings_in_tournament(tournament : &Tournament) -> Meetings {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `MutualGames` is never used
[INFO] [stdout]   --> src/types.rs:80:6
[INFO] [stdout]    |
[INFO] [stdout] 80 | type MutualGames = BTreeMap<(Id, Id), u8>;
[INFO] [stdout]    |      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `count_preferred_mutual_games` is never used
[INFO] [stdout]   --> src/types.rs:83:4
[INFO] [stdout]    |
[INFO] [stdout] 83 | fn count_preferred_mutual_games(characteristics : &TournamentCharacteristics) -> PreferredMutualGames {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_fine` is never used
[INFO] [stdout]    --> src/types.rs:125:4
[INFO] [stdout]     |
[INFO] [stdout] 125 | fn get_fine(tournament : &Tournament, characteristics : &TournamentCharacteristics) -> u64 {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MoveVector` is never constructed
[INFO] [stdout]    --> src/types.rs:143:8
[INFO] [stdout]     |
[INFO] [stdout] 143 | struct MoveVector {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `remove_player_from_table` is never used
[INFO] [stdout]    --> src/types.rs:151:4
[INFO] [stdout]     |
[INFO] [stdout] 151 | fn remove_player_from_table(table : &mut Table, player : &MoveVector) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `change_fine` is never used
[INFO] [stdout]    --> src/types.rs:155:4
[INFO] [stdout]     |
[INFO] [stdout] 155 | fn change_fine(state : &mut TournamentState, move_vector : &MoveVector) {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.01s
[INFO] running `Command { std: "docker" "inspect" "966cb98f47e8a9b44d01e0d92641a420e720af24993ecc991d7422fc1540c88a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "966cb98f47e8a9b44d01e0d92641a420e720af24993ecc991d7422fc1540c88a", kill_on_drop: false }`
[INFO] [stdout] 966cb98f47e8a9b44d01e0d92641a420e720af24993ecc991d7422fc1540c88a