[INFO] fetching crate libgraft 0.1.1...
[INFO] testing libgraft-0.1.1 against master#414482f6a0d4e7290f614300581a0b55442552a3 for pr-140985
[INFO] extracting crate libgraft 0.1.1 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate libgraft 0.1.1 on toolchain 414482f6a0d4e7290f614300581a0b55442552a3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+414482f6a0d4e7290f614300581a0b55442552a3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate libgraft 0.1.1
[INFO] finished tweaking crates.io crate libgraft 0.1.1
[INFO] tweaked toml for crates.io crate libgraft 0.1.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate libgraft 0.1.1 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" "+414482f6a0d4e7290f614300581a0b55442552a3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+414482f6a0d4e7290f614300581a0b55442552a3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cef1bc8342e0055928aacf9e761e56da24eb8935f0727da4348f3c1e5d23d462
[INFO] running `Command { std: "docker" "start" "-a" "cef1bc8342e0055928aacf9e761e56da24eb8935f0727da4348f3c1e5d23d462", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cef1bc8342e0055928aacf9e761e56da24eb8935f0727da4348f3c1e5d23d462", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cef1bc8342e0055928aacf9e761e56da24eb8935f0727da4348f3c1e5d23d462", kill_on_drop: false }`
[INFO] [stdout] cef1bc8342e0055928aacf9e761e56da24eb8935f0727da4348f3c1e5d23d462
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+414482f6a0d4e7290f614300581a0b55442552a3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 80c082387988c1c6ce8ca8b73318bfb7a33de7c40c33e444b5a13685cfbba56e
[INFO] running `Command { std: "docker" "start" "-a" "80c082387988c1c6ce8ca8b73318bfb7a33de7c40c33e444b5a13685cfbba56e", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.26
[INFO] [stderr]    Compiling libgraft v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `error::Error`
[INFO] [stdout]  --> src/graft_path.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     error::Error,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.62s
[INFO] running `Command { std: "docker" "inspect" "80c082387988c1c6ce8ca8b73318bfb7a33de7c40c33e444b5a13685cfbba56e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80c082387988c1c6ce8ca8b73318bfb7a33de7c40c33e444b5a13685cfbba56e", kill_on_drop: false }`
[INFO] [stdout] 80c082387988c1c6ce8ca8b73318bfb7a33de7c40c33e444b5a13685cfbba56e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+414482f6a0d4e7290f614300581a0b55442552a3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 530e2ea854e5becaaf6a8849e30e27612dc0ab4705edd048b6035e494d88f1c7
[INFO] running `Command { std: "docker" "start" "-a" "530e2ea854e5becaaf6a8849e30e27612dc0ab4705edd048b6035e494d88f1c7", kill_on_drop: false }`
[INFO] [stderr] Error response from daemon: mkdir /var/lib/docker/overlay2/8045d3b27ea903a83d312f0d8a5958935bf4ca21891b2748261c424766b8a8e2/merged: no space left on device
[INFO] running `Command { std: "docker" "inspect" "530e2ea854e5becaaf6a8849e30e27612dc0ab4705edd048b6035e494d88f1c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "530e2ea854e5becaaf6a8849e30e27612dc0ab4705edd048b6035e494d88f1c7", kill_on_drop: false }`
[INFO] [stdout] 530e2ea854e5becaaf6a8849e30e27612dc0ab4705edd048b6035e494d88f1c7