[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 try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fspica314%2Fninja-solver" "/workspace/builds/worker-96/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-96/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/spica314/ninja-solver on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "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-96/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: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "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-96/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-96/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 030dbfb2957693ec2b0dc62c3be59f00239089fcd79a2dd37279002c7ad5ec8e
[INFO] running `Command { std: "docker" "start" "-a" "030dbfb2957693ec2b0dc62c3be59f00239089fcd79a2dd37279002c7ad5ec8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "030dbfb2957693ec2b0dc62c3be59f00239089fcd79a2dd37279002c7ad5ec8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "030dbfb2957693ec2b0dc62c3be59f00239089fcd79a2dd37279002c7ad5ec8e", kill_on_drop: false }`
[INFO] [stdout] 030dbfb2957693ec2b0dc62c3be59f00239089fcd79a2dd37279002c7ad5ec8e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-96/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-96/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 150b486c7850855285b6771a7ae227d3b63ee2c674c7b859598a4880df56287f
[INFO] running `Command { std: "docker" "start" "-a" "150b486c7850855285b6771a7ae227d3b63ee2c674c7b859598a4880df56287f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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 is never read: `n_var`
[INFO] [stdout]    --> ninja-solver/src/sat.rs:245:5
[INFO] [stdout]     |
[INFO] [stdout] 245 |     n_var: usize,
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout]     |
[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: field is never read: `n_var`
[INFO] [stdout]    --> ninja-solver/src/sat.rs:245:5
[INFO] [stdout]     |
[INFO] [stdout] 245 |     n_var: usize,
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.61s
[INFO] running `Command { std: "docker" "inspect" "150b486c7850855285b6771a7ae227d3b63ee2c674c7b859598a4880df56287f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "150b486c7850855285b6771a7ae227d3b63ee2c674c7b859598a4880df56287f", kill_on_drop: false }`
[INFO] [stdout] 150b486c7850855285b6771a7ae227d3b63ee2c674c7b859598a4880df56287f