[INFO] cloning repository https://github.com/AngelVI13/rustoe
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AngelVI13/rustoe" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAngelVI13%2Frustoe", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAngelVI13%2Frustoe'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 51a0b26d56662d94b6a24e3495bb719fef82ee31
[INFO] checking AngelVI13/rustoe against try#72f88fc4e9458f89516a0b8b0868f3718aec5b47 for pr-74989
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAngelVI13%2Frustoe" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AngelVI13/rustoe on toolchain 72f88fc4e9458f89516a0b8b0868f3718aec5b47
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-14/source/Cargo.toml
[INFO] crate git repo https://github.com/AngelVI13/rustoe already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5467a389b0104ff7b0ca04be4daa06a40ff2c240b910d646a3aed484e48d36dd
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "5467a389b0104ff7b0ca04be4daa06a40ff2c240b910d646a3aed484e48d36dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5467a389b0104ff7b0ca04be4daa06a40ff2c240b910d646a3aed484e48d36dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5467a389b0104ff7b0ca04be4daa06a40ff2c240b910d646a3aed484e48d36dd", kill_on_drop: false }`
[INFO] [stdout] 5467a389b0104ff7b0ca04be4daa06a40ff2c240b910d646a3aed484e48d36dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dc0106bd4d1a163cc56ebcfa6db1cc32e330fba5af71869c7108bdbd2e3beb56
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "dc0106bd4d1a163cc56ebcfa6db1cc32e330fba5af71869c7108bdbd2e3beb56", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.5
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking tttoe v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::defines::*`
[INFO] [stdout]  --> src/uct.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::defines::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `NodeData`, `NodeId`
[INFO] [stdout]  --> src/uct.rs:5:32
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::node::{Arena, Node, NodeId, NodeData};
[INFO] [stdout]   |                                ^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `NodeData`
[INFO] [stdout]  --> src/main.rs:8:19
[INFO] [stdout]   |
[INFO] [stdout] 8 | use node::{Arena, NodeData};
[INFO] [stdout]   |                   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `uct::uct`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use uct::uct;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::defines::*`
[INFO] [stdout]  --> src/uct.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::defines::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `NodeData`, `NodeId`
[INFO] [stdout]  --> src/uct.rs:5:32
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::node::{Arena, Node, NodeId, NodeData};
[INFO] [stdout]   |                                ^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `NodeData`
[INFO] [stdout]  --> src/main.rs:8:19
[INFO] [stdout]   |
[INFO] [stdout] 8 | use node::{Arena, NodeData};
[INFO] [stdout]   |                   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `uct::uct`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use uct::uct;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arena`
[INFO] [stdout]   --> src/main.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let mut arena = Arena::new();
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_arena`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let mut arena = Arena::new();
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arena`
[INFO] [stdout]   --> src/main.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let mut arena = Arena::new();
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_arena`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let mut arena = Arena::new();
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0502]: cannot borrow `*arena` as immutable because it is also borrowed as mutable
[INFO] [stdout]   --> src/uct.rs:20:55
[INFO] [stdout]    |
[INFO] [stdout] 14 |         let mut node = &mut arena.nodes[rootnode_id.index];
[INFO] [stdout]    |                             ----------- mutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 20 |             let selected_child_id = node.select_child(arena);
[INFO] [stdout]    |                                          ------------ ^^^^^ immutable borrow occurs here
[INFO] [stdout]    |                                          |
[INFO] [stdout]    |                                          mutable borrow later used by call
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0499]: cannot borrow `*arena` as mutable more than once at a time
[INFO] [stdout]   --> src/uct.rs:33:47
[INFO] [stdout]    |
[INFO] [stdout] 14 |         let mut node = &mut arena.nodes[rootnode_id.index];
[INFO] [stdout]    |                             ----------- first mutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 33 |             let new_child_id = node.add_child(arena, move_, &state); 
[INFO] [stdout]    |                                     --------- ^^^^^ second mutable borrow occurs here
[INFO] [stdout]    |                                     |
[INFO] [stdout]    |                                     first borrow later used by call
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0499]: cannot borrow `*arena` as mutable more than once at a time
[INFO] [stdout]   --> src/uct.rs:64:21
[INFO] [stdout]    |
[INFO] [stdout] 62 |     let rootnode = arena.get(&rootnode_id);
[INFO] [stdout]    |                    ----- first mutable borrow occurs here
[INFO] [stdout] 63 |     for child_id in rootnode.children.iter() {
[INFO] [stdout]    |                     ------------------------ first borrow later used here
[INFO] [stdout] 64 |         let child = arena.get(child_id);
[INFO] [stdout]    |                     ^^^^^ second mutable borrow occurs here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors; 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0499, E0502.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0499`.
[INFO] [stdout] 
[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] [stdout] error[E0502]: cannot borrow `*arena` as immutable because it is also borrowed as mutable
[INFO] [stdout]   --> src/uct.rs:20:55
[INFO] [stdout]    |
[INFO] [stdout] 14 |         let mut node = &mut arena.nodes[rootnode_id.index];
[INFO] [stdout]    |                             ----------- mutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 20 |             let selected_child_id = node.select_child(arena);
[INFO] [stdout]    |                                          ------------ ^^^^^ immutable borrow occurs here
[INFO] [stdout]    |                                          |
[INFO] [stdout]    |                                          mutable borrow later used by call
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0499]: cannot borrow `*arena` as mutable more than once at a time
[INFO] [stdout]   --> src/uct.rs:33:47
[INFO] [stdout]    |
[INFO] [stdout] 14 |         let mut node = &mut arena.nodes[rootnode_id.index];
[INFO] [stdout]    |                             ----------- first mutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 33 |             let new_child_id = node.add_child(arena, move_, &state); 
[INFO] [stdout]    |                                     --------- ^^^^^ second mutable borrow occurs here
[INFO] [stdout]    |                                     |
[INFO] [stdout]    |                                     first borrow later used by call
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0499]: cannot borrow `*arena` as mutable more than once at a time
[INFO] [stdout]   --> src/uct.rs:64:21
[INFO] [stdout]    |
[INFO] [stdout] 62 |     let rootnode = arena.get(&rootnode_id);
[INFO] [stdout]    |                    ----- first mutable borrow occurs here
[INFO] [stdout] 63 |     for child_id in rootnode.children.iter() {
[INFO] [stdout]    |                     ------------------------ first borrow later used here
[INFO] [stdout] 64 |         let child = arena.get(child_id);
[INFO] [stdout]    |                     ^^^^^ second mutable borrow occurs here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors; 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0499, E0502.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0499`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "dc0106bd4d1a163cc56ebcfa6db1cc32e330fba5af71869c7108bdbd2e3beb56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc0106bd4d1a163cc56ebcfa6db1cc32e330fba5af71869c7108bdbd2e3beb56", kill_on_drop: false }`
[INFO] [stdout] dc0106bd4d1a163cc56ebcfa6db1cc32e330fba5af71869c7108bdbd2e3beb56
