[INFO] updating cached repository https://github.com/mratsim/rustygo
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e854f826c2cb2062b78de769f203cc072df38dd9
[INFO] checking mratsim/rustygo against master#c9edc02e8320a9e5799d185910ece7d491f524e6 for pr-64398
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmratsim%2Frustygo" "work/builds/worker-1/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mratsim/rustygo on toolchain c9edc02e8320a9e5799d185910ece7d491f524e6-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/mratsim/rustygo
[INFO] finished tweaking git repo https://github.com/mratsim/rustygo
[INFO] tweaked toml for git repo https://github.com/mratsim/rustygo written to work/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/mratsim/rustygo already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 30536e2bb8200c1673163cfe90b8634e35bc63f2b3303ecd7b43c9136ded223c
[INFO] running `"docker" "start" "-a" "30536e2bb8200c1673163cfe90b8634e35bc63f2b3303ecd7b43c9136ded223c"`
[INFO] [stderr]     Checking winapi v0.2.5
[INFO] [stderr]     Checking libc v0.2.4
[INFO] [stderr]     Checking fnv v1.0.2
[INFO] [stderr]     Checking itertools v0.4.6
[INFO] [stderr]    Compiling advapi32-sys v0.1.2
[INFO] [stderr]     Checking rand v0.3.12
[INFO] [stderr]     Checking rusty_go v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: type `MCTS_tree` should have an upper camel case name
[INFO] [stderr]    --> src/main.rs:511:8
[INFO] [stderr]     |
[INFO] [stderr] 511 | struct MCTS_tree{
[INFO] [stderr]     |        ^^^^^^^^^ help: convert the identifier to upper camel case: `MctsTree`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]    --> src/main.rs:732:1
[INFO] [stderr]     |
[INFO] [stderr] 732 | / lazy_static! {
[INFO] [stderr] 733 | |     static ref SEED_HASHER: CrossHash = CrossHash::new();
[INFO] [stderr] 734 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]    --> src/main.rs:732:1
[INFO] [stderr]     |
[INFO] [stderr] 732 | / lazy_static! {
[INFO] [stderr] 733 | |     static ref SEED_HASHER: CrossHash = CrossHash::new();
[INFO] [stderr] 734 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `BufRead`
[INFO] [stderr]   --> src/main.rs:19:22
[INFO] [stderr]    |
[INFO] [stderr] 19 | use std::io::{stdin, BufRead};
[INFO] [stderr]    |                      ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:659:13
[INFO] [stderr]     |
[INFO] [stderr] 659 |         let mut tree = MCTS_tree {
[INFO] [stderr]     |             ----^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `SCORE_TO_BEAT`
[INFO] [stderr]   --> src/main.rs:28:1
[INFO] [stderr]    |
[INFO] [stderr] 28 | const SCORE_TO_BEAT: i16 = 361; //Number of Intersections (used for half-step counting)
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/main.rs:525:5
[INFO] [stderr]     |
[INFO] [stderr] 525 |     fn new() -> MCTS_tree{
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type `MCTS_tree` should have an upper camel case name
[INFO] [stderr]    --> src/main.rs:511:8
[INFO] [stderr]     |
[INFO] [stderr] 511 | struct MCTS_tree{
[INFO] [stderr]     |        ^^^^^^^^^ help: convert the identifier to upper camel case: `MctsTree`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]    --> src/main.rs:732:1
[INFO] [stderr]     |
[INFO] [stderr] 732 | / lazy_static! {
[INFO] [stderr] 733 | |     static ref SEED_HASHER: CrossHash = CrossHash::new();
[INFO] [stderr] 734 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]    --> src/main.rs:732:1
[INFO] [stderr]     |
[INFO] [stderr] 732 | / lazy_static! {
[INFO] [stderr] 733 | |     static ref SEED_HASHER: CrossHash = CrossHash::new();
[INFO] [stderr] 734 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `BufRead`
[INFO] [stderr]   --> src/main.rs:19:22
[INFO] [stderr]    |
[INFO] [stderr] 19 | use std::io::{stdin, BufRead};
[INFO] [stderr]    |                      ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:659:13
[INFO] [stderr]     |
[INFO] [stderr] 659 |         let mut tree = MCTS_tree {
[INFO] [stderr]     |             ----^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `SCORE_TO_BEAT`
[INFO] [stderr]   --> src/main.rs:28:1
[INFO] [stderr]    |
[INFO] [stderr] 28 | const SCORE_TO_BEAT: i16 = 361; //Number of Intersections (used for half-step counting)
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/main.rs:525:5
[INFO] [stderr]     |
[INFO] [stderr] 525 |     fn new() -> MCTS_tree{
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.36s
[INFO] running `"docker" "inspect" "30536e2bb8200c1673163cfe90b8634e35bc63f2b3303ecd7b43c9136ded223c"`
[INFO] running `"docker" "rm" "-f" "30536e2bb8200c1673163cfe90b8634e35bc63f2b3303ecd7b43c9136ded223c"`
[INFO] [stdout] 30536e2bb8200c1673163cfe90b8634e35bc63f2b3303ecd7b43c9136ded223c