[INFO] cloning repository https://github.com/taisuke101/rust-compiler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/taisuke101/rust-compiler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftaisuke101%2Frust-compiler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftaisuke101%2Frust-compiler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1f4bcfd3a752e8b987083c4a2a56a00a75ca8f5d
[INFO] checking taisuke101/rust-compiler against try#3ec2a775459d36c7d90654e47c56ff7bb0d542ab for pr-139087
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftaisuke101%2Frust-compiler" "/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/taisuke101/rust-compiler on toolchain 3ec2a775459d36c7d90654e47c56ff7bb0d542ab
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3ec2a775459d36c7d90654e47c56ff7bb0d542ab" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/taisuke101/rust-compiler
[INFO] finished tweaking git repo https://github.com/taisuke101/rust-compiler
[INFO] tweaked toml for git repo https://github.com/taisuke101/rust-compiler written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/taisuke101/rust-compiler 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" "+3ec2a775459d36c7d90654e47c56ff7bb0d542ab" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking taisuke101/rust-compiler against try#3ec2a775459d36c7d90654e47c56ff7bb0d542ab for pr-139087
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftaisuke101%2Frust-compiler" "/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/taisuke101/rust-compiler on toolchain 3ec2a775459d36c7d90654e47c56ff7bb0d542ab
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3ec2a775459d36c7d90654e47c56ff7bb0d542ab" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/taisuke101/rust-compiler
[INFO] finished tweaking git repo https://github.com/taisuke101/rust-compiler
[INFO] tweaked toml for git repo https://github.com/taisuke101/rust-compiler written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/taisuke101/rust-compiler 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" "+3ec2a775459d36c7d90654e47c56ff7bb0d542ab" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+3ec2a775459d36c7d90654e47c56ff7bb0d542ab" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 329cf1c99f8655e129cb68545a5ee5a56e6c4c3f66b36b8be3c4f51edbb80c0d
[INFO] running `Command { std: "docker" "start" "-a" "329cf1c99f8655e129cb68545a5ee5a56e6c4c3f66b36b8be3c4f51edbb80c0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "329cf1c99f8655e129cb68545a5ee5a56e6c4c3f66b36b8be3c4f51edbb80c0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "329cf1c99f8655e129cb68545a5ee5a56e6c4c3f66b36b8be3c4f51edbb80c0d", kill_on_drop: false }`
[INFO] [stdout] 329cf1c99f8655e129cb68545a5ee5a56e6c4c3f66b36b8be3c4f51edbb80c0d
[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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+3ec2a775459d36c7d90654e47c56ff7bb0d542ab" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 047f65c35c2c736dbf29e6eadf0529cc62228cbc675518f93e6dc84ac4ea72e7
[INFO] running `Command { std: "docker" "start" "-a" "047f65c35c2c736dbf29e6eadf0529cc62228cbc675518f93e6dc84ac4ea72e7", kill_on_drop: false }`
[INFO] [stderr]     Checking compiler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `TextSpan`
[INFO] [stdout]  --> src/ast/parser.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 2 |     lexer::{TextSpan, Token, TokenKind},
[INFO] [stdout]   |             ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `token` is never read
[INFO] [stdout]    --> src/ast/mod.rs:156:5
[INFO] [stdout]     |
[INFO] [stdout] 154 | pub struct ASTBinaryOperator {
[INFO] [stdout]     |            ----------------- field in this struct
[INFO] [stdout] 155 |     kind: ASTBinaryOperatorKind,
[INFO] [stdout] 156 |     token: Token,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ASTBinaryOperator` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `length` is never used
[INFO] [stdout]   --> src/ast/lexer.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | impl TextSpan {
[INFO] [stdout]    | ------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 31 |     pub fn length(&self) -> usize {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `token` is never read
[INFO] [stdout]    --> src/ast/mod.rs:156:5
[INFO] [stdout]     |
[INFO] [stdout] 154 | pub struct ASTBinaryOperator {
[INFO] [stdout]     |            ----------------- field in this struct
[INFO] [stdout] 155 |     kind: ASTBinaryOperatorKind,
[INFO] [stdout] 156 |     token: Token,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ASTBinaryOperator` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.17s
[INFO] running `Command { std: "docker" "inspect" "047f65c35c2c736dbf29e6eadf0529cc62228cbc675518f93e6dc84ac4ea72e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "047f65c35c2c736dbf29e6eadf0529cc62228cbc675518f93e6dc84ac4ea72e7", kill_on_drop: false }`
[INFO] [stdout] 047f65c35c2c736dbf29e6eadf0529cc62228cbc675518f93e6dc84ac4ea72e7