[INFO] cloning repository https://github.com/gufoe/rs-prisoner
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gufoe/rs-prisoner" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgufoe%2Frs-prisoner", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgufoe%2Frs-prisoner'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6d24b14e5323ad9adaa26b88a72be48f7eba50fe
[INFO] testing gufoe/rs-prisoner against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgufoe%2Frs-prisoner" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gufoe/rs-prisoner on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gufoe/rs-prisoner
[INFO] finished tweaking git repo https://github.com/gufoe/rs-prisoner
[INFO] tweaked toml for git repo https://github.com/gufoe/rs-prisoner written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/gufoe/rs-prisoner already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fd7886b9759f1e550c85332f014431ab38b4241c6bb686543efc2d0320776593
[INFO] running `Command { std: "docker" "start" "-a" "fd7886b9759f1e550c85332f014431ab38b4241c6bb686543efc2d0320776593", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fd7886b9759f1e550c85332f014431ab38b4241c6bb686543efc2d0320776593", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd7886b9759f1e550c85332f014431ab38b4241c6bb686543efc2d0320776593", kill_on_drop: false }`
[INFO] [stdout] fd7886b9759f1e550c85332f014431ab38b4241c6bb686543efc2d0320776593
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 56c4a37d199e857f0dfe8ebca87106e5809cb98c9cf38bcd505f8128ed3308ea
[INFO] running `Command { std: "docker" "start" "-a" "56c4a37d199e857f0dfe8ebca87106e5809cb98c9cf38bcd505f8128ed3308ea", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rand_core v0.3.0
[INFO] [stderr]    Compiling libc v0.2.46
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.4
[INFO] [stderr]    Compiling rand_pcg v0.1.1
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_os v0.1.1
[INFO] [stderr]    Compiling prisoner v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:59:19
[INFO] [stdout]    |
[INFO] [stdout] 59 |     strategy: Box<Strategy>,
[INFO] [stdout]    |                   ^^^^^^^^ help: use `dyn`: `dyn Strategy`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `id`
[INFO] [stdout]   --> src/main.rs:31:21
[INFO] [stdout]    |
[INFO] [stdout] 31 |     fn play (&self, id: usize, history: &Vec<Vec<Card>>) -> Card {
[INFO] [stdout]    |                     ^^ help: if this is intentional, prefix it with an underscore: `_id`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `history`
[INFO] [stdout]   --> src/main.rs:31:32
[INFO] [stdout]    |
[INFO] [stdout] 31 |     fn play (&self, id: usize, history: &Vec<Vec<Card>>) -> Card {
[INFO] [stdout]    |                                ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_history`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `id`
[INFO] [stdout]   --> src/main.rs:43:21
[INFO] [stdout]    |
[INFO] [stdout] 43 |     fn play (&self, id: usize, history: &Vec<Vec<Card>>) -> Card {
[INFO] [stdout]    |                     ^^ help: if this is intentional, prefix it with an underscore: `_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `history`
[INFO] [stdout]   --> src/main.rs:43:32
[INFO] [stdout]    |
[INFO] [stdout] 43 |     fn play (&self, id: usize, history: &Vec<Vec<Card>>) -> Card {
[INFO] [stdout]    |                                ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_history`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `id`
[INFO] [stdout]   --> src/main.rs:51:21
[INFO] [stdout]    |
[INFO] [stdout] 51 |     fn play (&self, id: usize, history: &Vec<Vec<Card>>) -> Card {
[INFO] [stdout]    |                     ^^ help: if this is intentional, prefix it with an underscore: `_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `history`
[INFO] [stdout]   --> src/main.rs:51:32
[INFO] [stdout]    |
[INFO] [stdout] 51 |     fn play (&self, id: usize, history: &Vec<Vec<Card>>) -> Card {
[INFO] [stdout]    |                                ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_history`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.41s
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "56c4a37d199e857f0dfe8ebca87106e5809cb98c9cf38bcd505f8128ed3308ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56c4a37d199e857f0dfe8ebca87106e5809cb98c9cf38bcd505f8128ed3308ea", kill_on_drop: false }`
[INFO] [stdout] 56c4a37d199e857f0dfe8ebca87106e5809cb98c9cf38bcd505f8128ed3308ea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d8509e7e91b9e27a8cc0a2a2504b0696c3e49dd1e1afed4a490c19fe670e3087
[INFO] running `Command { std: "docker" "start" "-a" "d8509e7e91b9e27a8cc0a2a2504b0696c3e49dd1e1afed4a490c19fe670e3087", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling prisoner v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:59:19
[INFO] [stdout]    |
[INFO] [stdout] 59 |     strategy: Box<Strategy>,
[INFO] [stdout]    |                   ^^^^^^^^ help: use `dyn`: `dyn Strategy`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `id`
[INFO] [stdout]   --> src/main.rs:31:21
[INFO] [stdout]    |
[INFO] [stdout] 31 |     fn play (&self, id: usize, history: &Vec<Vec<Card>>) -> Card {
[INFO] [stdout]    |                     ^^ help: if this is intentional, prefix it with an underscore: `_id`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `history`
[INFO] [stdout]   --> src/main.rs:31:32
[INFO] [stdout]    |
[INFO] [stdout] 31 |     fn play (&self, id: usize, history: &Vec<Vec<Card>>) -> Card {
[INFO] [stdout]    |                                ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_history`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `id`
[INFO] [stdout]   --> src/main.rs:43:21
[INFO] [stdout]    |
[INFO] [stdout] 43 |     fn play (&self, id: usize, history: &Vec<Vec<Card>>) -> Card {
[INFO] [stdout]    |                     ^^ help: if this is intentional, prefix it with an underscore: `_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `history`
[INFO] [stdout]   --> src/main.rs:43:32
[INFO] [stdout]    |
[INFO] [stdout] 43 |     fn play (&self, id: usize, history: &Vec<Vec<Card>>) -> Card {
[INFO] [stdout]    |                                ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_history`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `id`
[INFO] [stdout]   --> src/main.rs:51:21
[INFO] [stdout]    |
[INFO] [stdout] 51 |     fn play (&self, id: usize, history: &Vec<Vec<Card>>) -> Card {
[INFO] [stdout]    |                     ^^ help: if this is intentional, prefix it with an underscore: `_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `history`
[INFO] [stdout]   --> src/main.rs:51:32
[INFO] [stdout]    |
[INFO] [stdout] 51 |     fn play (&self, id: usize, history: &Vec<Vec<Card>>) -> Card {
[INFO] [stdout]    |                                ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_history`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.86s
[INFO] running `Command { std: "docker" "inspect" "d8509e7e91b9e27a8cc0a2a2504b0696c3e49dd1e1afed4a490c19fe670e3087", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8509e7e91b9e27a8cc0a2a2504b0696c3e49dd1e1afed4a490c19fe670e3087", kill_on_drop: false }`
[INFO] [stdout] d8509e7e91b9e27a8cc0a2a2504b0696c3e49dd1e1afed4a490c19fe670e3087
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8cd5ba1ce7338caf2abcf44fb659fdc6aed7d267ea50bc7a1b53701bb9b71fc1
[INFO] running `Command { std: "docker" "start" "-a" "8cd5ba1ce7338caf2abcf44fb659fdc6aed7d267ea50bc7a1b53701bb9b71fc1", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:59:19
[INFO] [stderr]    |
[INFO] [stderr] 59 |     strategy: Box<Strategy>,
[INFO] [stderr]    |                   ^^^^^^^^ help: use `dyn`: `dyn Strategy`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `id`
[INFO] [stderr]   --> src/main.rs:31:21
[INFO] [stderr]    |
[INFO] [stderr] 31 |     fn play (&self, id: usize, history: &Vec<Vec<Card>>) -> Card {
[INFO] [stderr]    |                     ^^ help: if this is intentional, prefix it with an underscore: `_id`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `history`
[INFO] [stderr]   --> src/main.rs:31:32
[INFO] [stderr]    |
[INFO] [stderr] 31 |     fn play (&self, id: usize, history: &Vec<Vec<Card>>) -> Card {
[INFO] [stderr]    |                                ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_history`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `id`
[INFO] [stderr]   --> src/main.rs:43:21
[INFO] [stderr]    |
[INFO] [stderr] 43 |     fn play (&self, id: usize, history: &Vec<Vec<Card>>) -> Card {
[INFO] [stderr]    |                     ^^ help: if this is intentional, prefix it with an underscore: `_id`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `history`
[INFO] [stderr]   --> src/main.rs:43:32
[INFO] [stderr]    |
[INFO] [stderr] 43 |     fn play (&self, id: usize, history: &Vec<Vec<Card>>) -> Card {
[INFO] [stderr]    |                                ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_history`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `id`
[INFO] [stderr]   --> src/main.rs:51:21
[INFO] [stderr]    |
[INFO] [stderr] 51 |     fn play (&self, id: usize, history: &Vec<Vec<Card>>) -> Card {
[INFO] [stderr]    |                     ^^ help: if this is intentional, prefix it with an underscore: `_id`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `history`
[INFO] [stderr]   --> src/main.rs:51:32
[INFO] [stderr]    |
[INFO] [stderr] 51 |     fn play (&self, id: usize, history: &Vec<Vec<Card>>) -> Card {
[INFO] [stderr]    |                                ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_history`
[INFO] [stderr] 
[INFO] [stderr] warning: `prisoner` (bin "prisoner" test) generated 7 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/prisoner-12fceb63131c805c)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "8cd5ba1ce7338caf2abcf44fb659fdc6aed7d267ea50bc7a1b53701bb9b71fc1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8cd5ba1ce7338caf2abcf44fb659fdc6aed7d267ea50bc7a1b53701bb9b71fc1", kill_on_drop: false }`
[INFO] [stdout] 8cd5ba1ce7338caf2abcf44fb659fdc6aed7d267ea50bc7a1b53701bb9b71fc1