[INFO] cloning repository https://github.com/double-free/cfr-kuhn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/double-free/cfr-kuhn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdouble-free%2Fcfr-kuhn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdouble-free%2Fcfr-kuhn'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5c6862bb5f607317d99421a2ad7d5d2eddcfca44
[INFO] checking double-free/cfr-kuhn against master#64b185eddaa1d7ddf5e0c024be23b9cbba6c1722 for pr-143929
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdouble-free%2Fcfr-kuhn" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-6-tc1/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/double-free/cfr-kuhn
[INFO] finished tweaking git repo https://github.com/double-free/cfr-kuhn
[INFO] tweaked toml for git repo https://github.com/double-free/cfr-kuhn written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/double-free/cfr-kuhn on toolchain 64b185eddaa1d7ddf5e0c024be23b9cbba6c1722
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+64b185eddaa1d7ddf5e0c024be23b9cbba6c1722" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/double-free/cfr-kuhn 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" "+64b185eddaa1d7ddf5e0c024be23b9cbba6c1722" "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-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+64b185eddaa1d7ddf5e0c024be23b9cbba6c1722" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b0445d8769303f41a040b85243bd960daa4b3ba68b73716a8ecc4fd7ad9dae16
[INFO] running `Command { std: "docker" "start" "-a" "b0445d8769303f41a040b85243bd960daa4b3ba68b73716a8ecc4fd7ad9dae16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b0445d8769303f41a040b85243bd960daa4b3ba68b73716a8ecc4fd7ad9dae16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0445d8769303f41a040b85243bd960daa4b3ba68b73716a8ecc4fd7ad9dae16", kill_on_drop: false }`
[INFO] [stdout] b0445d8769303f41a040b85243bd960daa4b3ba68b73716a8ecc4fd7ad9dae16
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+64b185eddaa1d7ddf5e0c024be23b9cbba6c1722" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3528066ec467af912e3810d84285dccfe6c217534756cf22f3f0d1b37a95a51a
[INFO] running `Command { std: "docker" "start" "-a" "3528066ec467af912e3810d84285dccfe6c217534756cf22f3f0d1b37a95a51a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.117
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking getrandom v0.2.4
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking kuhn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `ok` is never read
[INFO] [stdout]    --> src/player/cfr_player.rs:149:17
[INFO] [stdout]     |
[INFO] [stdout] 149 |         let mut ok = writeln!(f, "money = {}, cfr info = ", self.money);
[INFO] [stdout]     |                 ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `ok` is never read
[INFO] [stdout]    --> src/player/cfr_player.rs:151:13
[INFO] [stdout]     |
[INFO] [stdout] 151 |             ok = writeln!(f, "    {} - {}", info_set, node);
[INFO] [stdout]     |             ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `round`
[INFO] [stdout]    --> src/player/cfr_player.rs:199:13
[INFO] [stdout]     |
[INFO] [stdout] 199 |         for round in 0..iteration {
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_round`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `opponent_id`
[INFO] [stdout]    --> src/player/cfr_player.rs:290:13
[INFO] [stdout]     |
[INFO] [stdout] 290 |         let opponent_id = 1 - player_id;
[INFO] [stdout]     |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_opponent_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `ok` is never read
[INFO] [stdout]    --> src/player/cfr_player.rs:149:17
[INFO] [stdout]     |
[INFO] [stdout] 149 |         let mut ok = writeln!(f, "money = {}, cfr info = ", self.money);
[INFO] [stdout]     |                 ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `ok` is never read
[INFO] [stdout]    --> src/player/cfr_player.rs:151:13
[INFO] [stdout]     |
[INFO] [stdout] 151 |             ok = writeln!(f, "    {} - {}", info_set, node);
[INFO] [stdout]     |             ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `random` is never used
[INFO] [stdout]   --> src/kuhn.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | impl Action {
[INFO] [stdout]    | ----------- associated function in this implementation
[INFO] [stdout] 23 |     pub fn random() -> Self {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `KuhnGame` is never constructed
[INFO] [stdout]   --> src/kuhn.rs:55:12
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub struct KuhnGame {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `add_player`, and `start` are never used
[INFO] [stdout]   --> src/kuhn.rs:64:12
[INFO] [stdout]    |
[INFO] [stdout] 63 | impl KuhnGame {
[INFO] [stdout]    | ------------- associated items in this implementation
[INFO] [stdout] 64 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 72 |     pub fn add_player(&mut self, mut p: Box<dyn player::Player>) {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 78 |     pub fn start(&mut self, total_round: usize) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_action` is never used
[INFO] [stdout]   --> src/player/cfr_player.rs:59:12
[INFO] [stdout]    |
[INFO] [stdout] 49 | impl CfrNode {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 59 |     pub fn get_action(&self) -> kuhn::Action {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `player_id` and `hand_card` are never read
[INFO] [stdout]    --> src/player/cfr_player.rs:129:5
[INFO] [stdout]     |
[INFO] [stdout] 128 | pub struct CfrPlayer {
[INFO] [stdout]     |            --------- fields in this struct
[INFO] [stdout] 129 |     player_id: i32,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 130 |     hand_card: i32,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `cfr` is never used
[INFO] [stdout]    --> src/player/cfr_player.rs:215:8
[INFO] [stdout]     |
[INFO] [stdout] 194 | impl CfrPlayer {
[INFO] [stdout]     | -------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 215 |     fn cfr(
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Player` is never used
[INFO] [stdout]  --> src/player/player.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub trait Player: std::fmt::Display {
[INFO] [stdout]   |           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `round`
[INFO] [stdout]    --> src/player/cfr_player.rs:199:13
[INFO] [stdout]     |
[INFO] [stdout] 199 |         for round in 0..iteration {
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_round`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `opponent_id`
[INFO] [stdout]    --> src/player/cfr_player.rs:290:13
[INFO] [stdout]     |
[INFO] [stdout] 290 |         let opponent_id = 1 - player_id;
[INFO] [stdout]     |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_opponent_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `random` is never used
[INFO] [stdout]   --> src/kuhn.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | impl Action {
[INFO] [stdout]    | ----------- associated function in this implementation
[INFO] [stdout] 23 |     pub fn random() -> Self {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `KuhnGame` is never constructed
[INFO] [stdout]   --> src/kuhn.rs:55:12
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub struct KuhnGame {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `add_player`, and `start` are never used
[INFO] [stdout]   --> src/kuhn.rs:64:12
[INFO] [stdout]    |
[INFO] [stdout] 63 | impl KuhnGame {
[INFO] [stdout]    | ------------- associated items in this implementation
[INFO] [stdout] 64 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 72 |     pub fn add_player(&mut self, mut p: Box<dyn player::Player>) {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 78 |     pub fn start(&mut self, total_round: usize) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_action` is never used
[INFO] [stdout]   --> src/player/cfr_player.rs:59:12
[INFO] [stdout]    |
[INFO] [stdout] 49 | impl CfrNode {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 59 |     pub fn get_action(&self) -> kuhn::Action {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `player_id` and `hand_card` are never read
[INFO] [stdout]    --> src/player/cfr_player.rs:129:5
[INFO] [stdout]     |
[INFO] [stdout] 128 | pub struct CfrPlayer {
[INFO] [stdout]     |            --------- fields in this struct
[INFO] [stdout] 129 |     player_id: i32,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 130 |     hand_card: i32,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `cfr` is never used
[INFO] [stdout]    --> src/player/cfr_player.rs:215:8
[INFO] [stdout]     |
[INFO] [stdout] 194 | impl CfrPlayer {
[INFO] [stdout]     | -------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 215 |     fn cfr(
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Player` is never used
[INFO] [stdout]  --> src/player/player.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub trait Player: std::fmt::Display {
[INFO] [stdout]   |           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.88s
[INFO] running `Command { std: "docker" "inspect" "3528066ec467af912e3810d84285dccfe6c217534756cf22f3f0d1b37a95a51a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3528066ec467af912e3810d84285dccfe6c217534756cf22f3f0d1b37a95a51a", kill_on_drop: false }`
[INFO] [stdout] 3528066ec467af912e3810d84285dccfe6c217534756cf22f3f0d1b37a95a51a