[INFO] cloning repository https://github.com/mabenmaple/blackjacktest
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mabenmaple/blackjacktest" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmabenmaple%2Fblackjacktest", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmabenmaple%2Fblackjacktest'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6b9a3af33ed8f0c253921d67c654346b4b43c186
[INFO] checking mabenmaple/blackjacktest against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmabenmaple%2Fblackjacktest" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mabenmaple/blackjacktest
[INFO] finished tweaking git repo https://github.com/mabenmaple/blackjacktest
[INFO] tweaked toml for git repo https://github.com/mabenmaple/blackjacktest written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mabenmaple/blackjacktest on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mabenmaple/blackjacktest 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e6127e3764cf0050042ce5d4f4a0627b2f21d94962d665aab3f024b0da369685
[INFO] running `Command { std: "docker" "start" "-a" "e6127e3764cf0050042ce5d4f4a0627b2f21d94962d665aab3f024b0da369685", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e6127e3764cf0050042ce5d4f4a0627b2f21d94962d665aab3f024b0da369685", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6127e3764cf0050042ce5d4f4a0627b2f21d94962d665aab3f024b0da369685", kill_on_drop: false }`
[INFO] [stdout] e6127e3764cf0050042ce5d4f4a0627b2f21d94962d665aab3f024b0da369685
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a9228d91e50f1f3263cacf2dc40a751b89a9a33a8140bb6142674966e2fbac37
[INFO] running `Command { std: "docker" "start" "-a" "a9228d91e50f1f3263cacf2dc40a751b89a9a33a8140bb6142674966e2fbac37", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]     Checking strum v0.24.1
[INFO] [stderr]     Checking getrandom v0.2.8
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling strum_macros v0.24.3
[INFO] [stderr]     Checking rust-blackjack v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `add_card` is never used
[INFO] [stdout]   --> src/deck.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl Deck {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 20 |     pub fn add_card(&mut self, c: Card) {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `next_move` is never used
[INFO] [stdout]   --> src/player.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub trait Person {
[INFO] [stdout]    |           ------ method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 17 |     fn next_move(&self) -> Reply;
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Reply` is never used
[INFO] [stdout]   --> src/player.rs:75:10
[INFO] [stdout]    |
[INFO] [stdout] 75 | pub enum Reply {
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/deck.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |         &self.cards.shuffle(&mut rng);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 46 |         let _ = &self.cards.shuffle(&mut rng);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `add_card` is never used
[INFO] [stdout]   --> src/deck.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl Deck {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 20 |     pub fn add_card(&mut self, c: Card) {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `next_move` is never used
[INFO] [stdout]   --> src/player.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub trait Person {
[INFO] [stdout]    |           ------ method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 17 |     fn next_move(&self) -> Reply;
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Reply` is never used
[INFO] [stdout]   --> src/player.rs:75:10
[INFO] [stdout]    |
[INFO] [stdout] 75 | pub enum Reply {
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/deck.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |         &self.cards.shuffle(&mut rng);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 46 |         let _ = &self.cards.shuffle(&mut rng);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.00s
[INFO] running `Command { std: "docker" "inspect" "a9228d91e50f1f3263cacf2dc40a751b89a9a33a8140bb6142674966e2fbac37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9228d91e50f1f3263cacf2dc40a751b89a9a33a8140bb6142674966e2fbac37", kill_on_drop: false }`
[INFO] [stdout] a9228d91e50f1f3263cacf2dc40a751b89a9a33a8140bb6142674966e2fbac37
