[INFO] cloning repository https://github.com/spica314/ninja-solver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/spica314/ninja-solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fspica314%2Fninja-solver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fspica314%2Fninja-solver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3b2701573eb0b112c1c9fe367a11009486e92d5c
[INFO] checking spica314/ninja-solver against master#a42d94ebb883116f2867cbe3016d9bde9ca6d3f7 for pr-117593
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fspica314%2Fninja-solver" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/spica314/ninja-solver on toolchain a42d94ebb883116f2867cbe3016d9bde9ca6d3f7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a42d94ebb883116f2867cbe3016d9bde9ca6d3f7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/spica314/ninja-solver
[INFO] finished tweaking git repo https://github.com/spica314/ninja-solver
[INFO] tweaked toml for git repo https://github.com/spica314/ninja-solver written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/spica314/ninja-solver 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" "+a42d94ebb883116f2867cbe3016d9bde9ca6d3f7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking spica314/ninja-solver against try#031b389f0c31c0f91c9464d26313ae513dbe8d36 for pr-117593
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fspica314%2Fninja-solver" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/spica314/ninja-solver on toolchain 031b389f0c31c0f91c9464d26313ae513dbe8d36
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+031b389f0c31c0f91c9464d26313ae513dbe8d36" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/spica314/ninja-solver
[INFO] finished tweaking git repo https://github.com/spica314/ninja-solver
[INFO] tweaked toml for git repo https://github.com/spica314/ninja-solver written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/spica314/ninja-solver 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" "+031b389f0c31c0f91c9464d26313ae513dbe8d36" "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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:0c7e0e8312ad82a1bed3696438480b7da990d348377d3754e1cd95b06a8a36c7" "/opt/rustwide/cargo-home/bin/cargo" "+031b389f0c31c0f91c9464d26313ae513dbe8d36" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3b46b904bb54dc0f005fe5c6400e80937ad1772e6ae9652e317482cba6a8860a
[INFO] running `Command { std: "docker" "start" "-a" "3b46b904bb54dc0f005fe5c6400e80937ad1772e6ae9652e317482cba6a8860a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3b46b904bb54dc0f005fe5c6400e80937ad1772e6ae9652e317482cba6a8860a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b46b904bb54dc0f005fe5c6400e80937ad1772e6ae9652e317482cba6a8860a", kill_on_drop: false }`
[INFO] [stdout] 3b46b904bb54dc0f005fe5c6400e80937ad1772e6ae9652e317482cba6a8860a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:0c7e0e8312ad82a1bed3696438480b7da990d348377d3754e1cd95b06a8a36c7" "/opt/rustwide/cargo-home/bin/cargo" "+031b389f0c31c0f91c9464d26313ae513dbe8d36" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 325ae3086b51886edb9fc0e275479e764d71e2df9c025b8280876a99c4bbac09
[INFO] running `Command { std: "docker" "start" "-a" "325ae3086b51886edb9fc0e275479e764d71e2df9c025b8280876a99c4bbac09", kill_on_drop: false }`
[INFO] [stderr]     Checking ninja-solver v0.1.0 (/opt/rustwide/workdir/ninja-solver)
[INFO] [stdout] warning: unused import: `BTreeSet`
[INFO] [stdout]  --> ninja-solver/src/sat.rs:1:25
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{collections::{BTreeSet, HashMap}, fmt::{self, Debug}};
[INFO] [stdout]   |                         ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BTreeSet`
[INFO] [stdout]  --> ninja-solver/src/sat.rs:1:25
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{collections::{BTreeSet, HashMap}, fmt::{self, Debug}};
[INFO] [stdout]   |                         ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `n_var` is never read
[INFO] [stdout]    --> ninja-solver/src/sat.rs:245:5
[INFO] [stdout]     |
[INFO] [stdout] 244 | struct SatSolver {
[INFO] [stdout]     |        --------- field in this struct
[INFO] [stdout] 245 |     n_var: usize,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `SatSolver` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `n_var` is never read
[INFO] [stdout]    --> ninja-solver/src/sat.rs:245:5
[INFO] [stdout]     |
[INFO] [stdout] 244 | struct SatSolver {
[INFO] [stdout]     |        --------- field in this struct
[INFO] [stdout] 245 |     n_var: usize,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `SatSolver` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `Command { std: "docker" "inspect" "325ae3086b51886edb9fc0e275479e764d71e2df9c025b8280876a99c4bbac09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "325ae3086b51886edb9fc0e275479e764d71e2df9c025b8280876a99c4bbac09", kill_on_drop: false }`
[INFO] [stdout] 325ae3086b51886edb9fc0e275479e764d71e2df9c025b8280876a99c4bbac09