[INFO] updating cached repository https://github.com/AngelVI13/rustoe
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/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] 51a0b26d56662d94b6a24e3495bb719fef82ee31
[INFO] checking AngelVI13/rustoe against master#209b2be09fcaff937480d1fbbe8b31646e361c7a for pr-70917
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAngelVI13%2Frustoe" "/workspace/builds/worker-13/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AngelVI13/rustoe on toolchain 209b2be09fcaff937480d1fbbe8b31646e361c7a
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/AngelVI13/rustoe
[INFO] finished tweaking git repo https://github.com/AngelVI13/rustoe
[INFO] tweaked toml for git repo https://github.com/AngelVI13/rustoe written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/AngelVI13/rustoe already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "MAP_USER_ID=0" "-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" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c6e6182a612c174a03109062600c0b552ee2c11f535e9959de7c6de6f260417d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "c6e6182a612c174a03109062600c0b552ee2c11f535e9959de7c6de6f260417d"`
[INFO] [stderr]     Checking tttoe v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `crate::defines::*`
[INFO] [stderr]  --> src/uct.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::defines::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `NodeData`, `NodeId`
[INFO] [stderr]  --> src/uct.rs:5:32
[INFO] [stderr]   |
[INFO] [stderr] 5 | use crate::node::{Arena, Node, NodeId, NodeData};
[INFO] [stderr]   |                                ^^^^^^  ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `NodeData`
[INFO] [stderr]  --> src/main.rs:8:19
[INFO] [stderr]   |
[INFO] [stderr] 8 | use node::{Arena, NodeData};
[INFO] [stderr]   |                   ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `uct::uct`
[INFO] [stderr]  --> src/main.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use uct::uct;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `arena`
[INFO] [stderr]   --> src/main.rs:18:13
[INFO] [stderr]    |
[INFO] [stderr] 18 |     let mut arena = Arena::new();
[INFO] [stderr]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_arena`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |     let mut arena = Arena::new();
[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] error[E0502]: cannot borrow `*arena` as immutable because it is also borrowed as mutable
[INFO] [stderr]   --> src/uct.rs:20:55
[INFO] [stderr]    |
[INFO] [stderr] 14 |         let mut node = &mut arena.nodes[rootnode_id.index];
[INFO] [stderr]    |                             ----------- mutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 20 |             let selected_child_id = node.select_child(arena);
[INFO] [stderr]    |                                          ------------ ^^^^^ immutable borrow occurs here
[INFO] [stderr]    |                                          |
[INFO] [stderr]    |                                          mutable borrow later used by call
[INFO] [stderr] 
[INFO] [stderr] error[E0499]: cannot borrow `*arena` as mutable more than once at a time
[INFO] [stderr]   --> src/uct.rs:33:47
[INFO] [stderr]    |
[INFO] [stderr] 14 |         let mut node = &mut arena.nodes[rootnode_id.index];
[INFO] [stderr]    |                             ----------- first mutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 33 |             let new_child_id = node.add_child(arena, move_, &state); 
[INFO] [stderr]    |                                     --------- ^^^^^ second mutable borrow occurs here
[INFO] [stderr]    |                                     |
[INFO] [stderr]    |                                     first borrow later used by call
[INFO] [stderr] 
[INFO] [stderr] error[E0499]: cannot borrow `*arena` as mutable more than once at a time
[INFO] [stderr]   --> src/uct.rs:64:21
[INFO] [stderr]    |
[INFO] [stderr] 62 |     let rootnode = arena.get(&rootnode_id);
[INFO] [stderr]    |                    ----- first mutable borrow occurs here
[INFO] [stderr] 63 |     for child_id in rootnode.children.iter() {
[INFO] [stderr]    |                     ------------------------ first borrow later used here
[INFO] [stderr] 64 |         let child = arena.get(child_id);
[INFO] [stderr]    |                     ^^^^^ second mutable borrow occurs here
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0499, E0502.
[INFO] [stderr] For more information about an error, try `rustc --explain E0499`.
[INFO] [stderr] error: could not compile `tttoe`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: unused import: `crate::defines::*`
[INFO] [stderr]  --> src/uct.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::defines::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `NodeData`, `NodeId`
[INFO] [stderr]  --> src/uct.rs:5:32
[INFO] [stderr]   |
[INFO] [stderr] 5 | use crate::node::{Arena, Node, NodeId, NodeData};
[INFO] [stderr]   |                                ^^^^^^  ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `NodeData`
[INFO] [stderr]  --> src/main.rs:8:19
[INFO] [stderr]   |
[INFO] [stderr] 8 | use node::{Arena, NodeData};
[INFO] [stderr]   |                   ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `uct::uct`
[INFO] [stderr]  --> src/main.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use uct::uct;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `arena`
[INFO] [stderr]   --> src/main.rs:18:13
[INFO] [stderr]    |
[INFO] [stderr] 18 |     let mut arena = Arena::new();
[INFO] [stderr]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_arena`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |     let mut arena = Arena::new();
[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] error[E0502]: cannot borrow `*arena` as immutable because it is also borrowed as mutable
[INFO] [stderr]   --> src/uct.rs:20:55
[INFO] [stderr]    |
[INFO] [stderr] 14 |         let mut node = &mut arena.nodes[rootnode_id.index];
[INFO] [stderr]    |                             ----------- mutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 20 |             let selected_child_id = node.select_child(arena);
[INFO] [stderr]    |                                          ------------ ^^^^^ immutable borrow occurs here
[INFO] [stderr]    |                                          |
[INFO] [stderr]    |                                          mutable borrow later used by call
[INFO] [stderr] 
[INFO] [stderr] error[E0499]: cannot borrow `*arena` as mutable more than once at a time
[INFO] [stderr]   --> src/uct.rs:33:47
[INFO] [stderr]    |
[INFO] [stderr] 14 |         let mut node = &mut arena.nodes[rootnode_id.index];
[INFO] [stderr]    |                             ----------- first mutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 33 |             let new_child_id = node.add_child(arena, move_, &state); 
[INFO] [stderr]    |                                     --------- ^^^^^ second mutable borrow occurs here
[INFO] [stderr]    |                                     |
[INFO] [stderr]    |                                     first borrow later used by call
[INFO] [stderr] 
[INFO] [stderr] error[E0499]: cannot borrow `*arena` as mutable more than once at a time
[INFO] [stderr]   --> src/uct.rs:64:21
[INFO] [stderr]    |
[INFO] [stderr] 62 |     let rootnode = arena.get(&rootnode_id);
[INFO] [stderr]    |                    ----- first mutable borrow occurs here
[INFO] [stderr] 63 |     for child_id in rootnode.children.iter() {
[INFO] [stderr]    |                     ------------------------ first borrow later used here
[INFO] [stderr] 64 |         let child = arena.get(child_id);
[INFO] [stderr]    |                     ^^^^^ second mutable borrow occurs here
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0499, E0502.
[INFO] [stderr] For more information about an error, try `rustc --explain E0499`.
[INFO] [stderr] error: could not compile `tttoe`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "c6e6182a612c174a03109062600c0b552ee2c11f535e9959de7c6de6f260417d"`
[INFO] running `"docker" "rm" "-f" "c6e6182a612c174a03109062600c0b552ee2c11f535e9959de7c6de6f260417d"`
[INFO] [stdout] c6e6182a612c174a03109062600c0b552ee2c11f535e9959de7c6de6f260417d
