[INFO] cloning repository https://github.com/pommeJedusor/mcts_connect4
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pommeJedusor/mcts_connect4" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FpommeJedusor%2Fmcts_connect4", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FpommeJedusor%2Fmcts_connect4'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 036fd5c725275307204a8903fd987e427be2131f
[INFO] checking pommeJedusor/mcts_connect4 against try#fc545c6b951a304df08b327c158f92678582f435 for pr-140557
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FpommeJedusor%2Fmcts_connect4" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pommeJedusor/mcts_connect4 on toolchain fc545c6b951a304df08b327c158f92678582f435
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fc545c6b951a304df08b327c158f92678582f435" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/pommeJedusor/mcts_connect4
[INFO] finished tweaking git repo https://github.com/pommeJedusor/mcts_connect4
[INFO] tweaked toml for git repo https://github.com/pommeJedusor/mcts_connect4 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/pommeJedusor/mcts_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" "+fc545c6b951a304df08b327c158f92678582f435" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+fc545c6b951a304df08b327c158f92678582f435" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0d036b0d874ee864e7a4106e29fe0403d1489311f21308dae81481fe746d314e
[INFO] running `Command { std: "docker" "start" "-a" "0d036b0d874ee864e7a4106e29fe0403d1489311f21308dae81481fe746d314e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0d036b0d874ee864e7a4106e29fe0403d1489311f21308dae81481fe746d314e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d036b0d874ee864e7a4106e29fe0403d1489311f21308dae81481fe746d314e", kill_on_drop: false }`
[INFO] [stdout] 0d036b0d874ee864e7a4106e29fe0403d1489311f21308dae81481fe746d314e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+fc545c6b951a304df08b327c158f92678582f435" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e27210d4cda4f14eec7046abaca27b8f684a242df5458f42c622e502a232976d
[INFO] running `Command { std: "docker" "start" "-a" "e27210d4cda4f14eec7046abaca27b8f684a242df5458f42c622e502a232976d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]    Compiling unicode-ident v1.0.15
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]    Compiling syn v2.0.96
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking mcst_connect4 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `time`
[INFO] [stdout]    --> src/main.rs:149:44
[INFO] [stdout]     |
[INFO] [stdout] 149 | fn mcst(mut graph: Vec<Node>, root: usize, time: u128) -> (f64, (u64, u64), Vec<Node>, usize) {
[INFO] [stdout]     |                                            ^^^^ help: if this is intentional, prefix it with an underscore: `_time`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `time`
[INFO] [stdout]    --> src/main.rs:149:44
[INFO] [stdout]     |
[INFO] [stdout] 149 | fn mcst(mut graph: Vec<Node>, root: usize, time: u128) -> (f64, (u64, u64), Vec<Node>, usize) {
[INFO] [stdout]     |                                            ^^^^ help: if this is intentional, prefix it with an underscore: `_time`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `score` is never read
[INFO] [stdout]    --> src/main.rs:194:13
[INFO] [stdout]     |
[INFO] [stdout] 194 |     let mut score = 0.0;
[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 `score` is never read
[INFO] [stdout]    --> src/main.rs:194:13
[INFO] [stdout]     |
[INFO] [stdout] 194 |     let mut score = 0.0;
[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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.54s
[INFO] running `Command { std: "docker" "inspect" "e27210d4cda4f14eec7046abaca27b8f684a242df5458f42c622e502a232976d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e27210d4cda4f14eec7046abaca27b8f684a242df5458f42c622e502a232976d", kill_on_drop: false }`
[INFO] [stdout] e27210d4cda4f14eec7046abaca27b8f684a242df5458f42c622e502a232976d