[INFO] fetching crate roggle 0.7.2...
[INFO] checking roggle-0.7.2 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate roggle 0.7.2 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate roggle 0.7.2
[INFO] finished tweaking crates.io crate roggle 0.7.2
[INFO] tweaked toml for crates.io crate roggle 0.7.2 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate roggle 0.7.2 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate roggle 0.7.2 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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] afd7f58623afb2a129e53ec3c939012f9b9ebfcbc9ec4c5b86c499a6c899107b
[INFO] running `Command { std: "docker" "start" "-a" "afd7f58623afb2a129e53ec3c939012f9b9ebfcbc9ec4c5b86c499a6c899107b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "afd7f58623afb2a129e53ec3c939012f9b9ebfcbc9ec4c5b86c499a6c899107b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "afd7f58623afb2a129e53ec3c939012f9b9ebfcbc9ec4c5b86c499a6c899107b", kill_on_drop: false }`
[INFO] [stdout] afd7f58623afb2a129e53ec3c939012f9b9ebfcbc9ec4c5b86c499a6c899107b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6650032114fd8c6bac9f50e49d6388cc1c5fa4dbf5434e21ee5a4eb982d29017
[INFO] running `Command { std: "docker" "start" "-a" "6650032114fd8c6bac9f50e49d6388cc1c5fa4dbf5434e21ee5a4eb982d29017", kill_on_drop: false }`
[INFO] [stderr]     Checking roggle v0.7.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/board.rs:104:35
[INFO] [stdout]     |
[INFO] [stdout] 104 |     self.values[(pos.1 as usize)][(pos.0 as usize)]
[INFO] [stdout]     |                                   ^              ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 104 -     self.values[(pos.1 as usize)][(pos.0 as usize)]
[INFO] [stdout] 104 +     self.values[(pos.1 as usize)][pos.0 as usize]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/board.rs:104:17
[INFO] [stdout]     |
[INFO] [stdout] 104 |     self.values[(pos.1 as usize)][(pos.0 as usize)]
[INFO] [stdout]     |                 ^              ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 104 -     self.values[(pos.1 as usize)][(pos.0 as usize)]
[INFO] [stdout] 104 +     self.values[pos.1 as usize][(pos.0 as usize)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/board.rs:104:35
[INFO] [stdout]     |
[INFO] [stdout] 104 |     self.values[(pos.1 as usize)][(pos.0 as usize)]
[INFO] [stdout]     |                                   ^              ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 104 -     self.values[(pos.1 as usize)][(pos.0 as usize)]
[INFO] [stdout] 104 +     self.values[(pos.1 as usize)][pos.0 as usize]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/board.rs:104:17
[INFO] [stdout]     |
[INFO] [stdout] 104 |     self.values[(pos.1 as usize)][(pos.0 as usize)]
[INFO] [stdout]     |                 ^              ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 104 -     self.values[(pos.1 as usize)][(pos.0 as usize)]
[INFO] [stdout] 104 +     self.values[pos.1 as usize][(pos.0 as usize)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `lines_from_file` is never used
[INFO] [stdout]   --> src/lib.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn lines_from_file(filename: impl AsRef<Path>) -> Vec<String> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]  --> src/trie.rs:5:3
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct TrieNode {
[INFO] [stdout]   |            -------- field in this struct
[INFO] [stdout] 5 |   value: Option<char>,
[INFO] [stdout]   |   ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `TrieNode` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `check_value` is never used
[INFO] [stdout]   --> src/trie.rs:27:10
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl TrieNode {
[INFO] [stdout]    | ------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 27 |   pub fn check_value(self, c: char) -> bool {
[INFO] [stdout]    |          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `lines_from_file` is never used
[INFO] [stdout]   --> src/lib.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn lines_from_file(filename: impl AsRef<Path>) -> Vec<String> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]  --> src/trie.rs:5:3
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct TrieNode {
[INFO] [stdout]   |            -------- field in this struct
[INFO] [stdout] 5 |   value: Option<char>,
[INFO] [stdout]   |   ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `TrieNode` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `check_value` is never used
[INFO] [stdout]   --> src/trie.rs:27:10
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl TrieNode {
[INFO] [stdout]    | ------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 27 |   pub fn check_value(self, c: char) -> bool {
[INFO] [stdout]    |          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `Command { std: "docker" "inspect" "6650032114fd8c6bac9f50e49d6388cc1c5fa4dbf5434e21ee5a4eb982d29017", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6650032114fd8c6bac9f50e49d6388cc1c5fa4dbf5434e21ee5a4eb982d29017", kill_on_drop: false }`
[INFO] [stdout] 6650032114fd8c6bac9f50e49d6388cc1c5fa4dbf5434e21ee5a4eb982d29017