[INFO] cloning repository https://github.com/romch007/connect4
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/romch007/connect4" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fromch007%2Fconnect4", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fromch007%2Fconnect4'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c6069d18407f4af3b2505485781a7fd433bbb0ee
[INFO] testing romch007/connect4 against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fromch007%2Fconnect4" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/romch007/connect4
[INFO] finished tweaking git repo https://github.com/romch007/connect4
[INFO] tweaked toml for git repo https://github.com/romch007/connect4 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/romch007/connect4 on toolchain 8de4c7234dd9b97c9d76b58671343fdbbc9a433e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/romch007/connect4 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" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fa943600475186070083ad27a1f851691e54128e92f14b84ec40687f7cc0902d
[INFO] running `Command { std: "docker" "start" "-a" "fa943600475186070083ad27a1f851691e54128e92f14b84ec40687f7cc0902d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fa943600475186070083ad27a1f851691e54128e92f14b84ec40687f7cc0902d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa943600475186070083ad27a1f851691e54128e92f14b84ec40687f7cc0902d", kill_on_drop: false }`
[INFO] [stdout] fa943600475186070083ad27a1f851691e54128e92f14b84ec40687f7cc0902d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "build" "--frozen" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] b777a5cfe9283164f297975bdd534b421cf32ce63b22fd4e0179fe63d10d1aeb
[INFO] running `Command { std: "docker" "start" "-a" "b777a5cfe9283164f297975bdd534b421cf32ce63b22fd4e0179fe63d10d1aeb", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling getrandom v0.2.7
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling connect4 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::f32::NEG_INFINITY`
[INFO] [stdout]  --> src/ai/minimax.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::f32::NEG_INFINITY;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `minimax_score`
[INFO] [stdout]   --> src/ai/minimax.rs:69:19
[INFO] [stdout]    |
[INFO] [stdout] 69 |         let (col, minimax_score) = self.minimax(
[INFO] [stdout]    |                   ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_minimax_score`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RandomAI` is never constructed
[INFO] [stdout]  --> src/ai/random.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct RandomAI {}
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> src/ai/random.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | impl RandomAI {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 7 |     pub fn new() -> Self {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.96s
[INFO] running `Command { std: "docker" "inspect" "b777a5cfe9283164f297975bdd534b421cf32ce63b22fd4e0179fe63d10d1aeb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b777a5cfe9283164f297975bdd534b421cf32ce63b22fd4e0179fe63d10d1aeb", kill_on_drop: false }`
[INFO] [stdout] b777a5cfe9283164f297975bdd534b421cf32ce63b22fd4e0179fe63d10d1aeb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "test" "--frozen" "--no-run" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] e18e4f8a6f12b5bbcb4641824df96817acb35c18fd6007c8fa876335816a95e4
[INFO] running `Command { std: "docker" "start" "-a" "e18e4f8a6f12b5bbcb4641824df96817acb35c18fd6007c8fa876335816a95e4", kill_on_drop: false }`
[INFO] [stderr]    Compiling connect4 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::f32::NEG_INFINITY`
[INFO] [stdout]  --> src/ai/minimax.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::f32::NEG_INFINITY;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `minimax_score`
[INFO] [stdout]   --> src/ai/minimax.rs:69:19
[INFO] [stdout]    |
[INFO] [stdout] 69 |         let (col, minimax_score) = self.minimax(
[INFO] [stdout]    |                   ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_minimax_score`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RandomAI` is never constructed
[INFO] [stdout]  --> src/ai/random.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct RandomAI {}
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> src/ai/random.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | impl RandomAI {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 7 |     pub fn new() -> Self {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `Command { std: "docker" "inspect" "e18e4f8a6f12b5bbcb4641824df96817acb35c18fd6007c8fa876335816a95e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e18e4f8a6f12b5bbcb4641824df96817acb35c18fd6007c8fa876335816a95e4", kill_on_drop: false }`
[INFO] [stdout] e18e4f8a6f12b5bbcb4641824df96817acb35c18fd6007c8fa876335816a95e4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "test" "--frozen" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 415835caa61e26a3c94eb2a7a66e4de3a330acd973cb9b82aadbfcbb01d26303
[INFO] running `Command { std: "docker" "start" "-a" "415835caa61e26a3c94eb2a7a66e4de3a330acd973cb9b82aadbfcbb01d26303", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::f32::NEG_INFINITY`
[INFO] [stderr]  --> src/ai/minimax.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::f32::NEG_INFINITY;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `minimax_score`
[INFO] [stderr]   --> src/ai/minimax.rs:69:19
[INFO] [stderr]    |
[INFO] [stderr] 69 |         let (col, minimax_score) = self.minimax(
[INFO] [stderr]    |                   ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_minimax_score`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `RandomAI` is never constructed
[INFO] [stderr]  --> src/ai/random.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub struct RandomAI {}
[INFO] [stderr]   |            ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]  --> src/ai/random.rs:7:12
[INFO] [stderr]   |
[INFO] [stderr] 6 | impl RandomAI {
[INFO] [stderr]   | ------------- associated function in this implementation
[INFO] [stderr] 7 |     pub fn new() -> Self {
[INFO] [stderr]   |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `connect4` (bin "connect4" test) generated 4 warnings (run `cargo fix --bin "connect4" --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/connect4-1a75f9fbadc19595)
[INFO] [stdout] 
[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" "415835caa61e26a3c94eb2a7a66e4de3a330acd973cb9b82aadbfcbb01d26303", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "415835caa61e26a3c94eb2a7a66e4de3a330acd973cb9b82aadbfcbb01d26303", kill_on_drop: false }`
[INFO] [stdout] 415835caa61e26a3c94eb2a7a66e4de3a330acd973cb9b82aadbfcbb01d26303