[INFO] fetching crate isolate 0.1.2...
[INFO] testing isolate-0.1.2 against 1.60.0 for beta-1.61-1
[INFO] extracting crate isolate 0.1.2 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate isolate 0.1.2 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate isolate 0.1.2
[INFO] finished tweaking crates.io crate isolate 0.1.2
[INFO] tweaked toml for crates.io crate isolate 0.1.2 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded strsim v0.6.0
[INFO] [stderr]   Downloaded docopt v0.8.3
[INFO] [stderr]   Downloaded nix v0.9.0
[INFO] [stderr]   Downloaded unshare v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1ec3ce9d19641151307b09d9a166439f9ed83d6a2bbc68d1dfd6ec35400e95c0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1ec3ce9d19641151307b09d9a166439f9ed83d6a2bbc68d1dfd6ec35400e95c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1ec3ce9d19641151307b09d9a166439f9ed83d6a2bbc68d1dfd6ec35400e95c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ec3ce9d19641151307b09d9a166439f9ed83d6a2bbc68d1dfd6ec35400e95c0", kill_on_drop: false }`
[INFO] [stdout] 1ec3ce9d19641151307b09d9a166439f9ed83d6a2bbc68d1dfd6ec35400e95c0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5709ceb2085631f48d1506b5a26c4ebdcc75ae90680280ab95a4fb6ba292dcfe
[INFO] running `Command { std: "docker" "start" "-a" "5709ceb2085631f48d1506b5a26c4ebdcc75ae90680280ab95a4fb6ba292dcfe", kill_on_drop: false }`
[INFO] [stderr]    Compiling strsim v0.6.0
[INFO] [stderr]    Compiling nix v0.9.0
[INFO] [stderr]    Compiling toml v0.4.10
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling docopt v0.8.3
[INFO] [stderr]    Compiling unshare v0.2.0
[INFO] [stderr]    Compiling isolate v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `config`
[INFO] [stdout]    --> src/main.rs:144:5
[INFO] [stdout]     |
[INFO] [stdout] 144 |     config: Configuration,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.91s
[INFO] running `Command { std: "docker" "inspect" "5709ceb2085631f48d1506b5a26c4ebdcc75ae90680280ab95a4fb6ba292dcfe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5709ceb2085631f48d1506b5a26c4ebdcc75ae90680280ab95a4fb6ba292dcfe", kill_on_drop: false }`
[INFO] [stdout] 5709ceb2085631f48d1506b5a26c4ebdcc75ae90680280ab95a4fb6ba292dcfe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1e151338091944d5740c5641ccdb0033d7596d8244bdbcb223750d08489bc780
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1e151338091944d5740c5641ccdb0033d7596d8244bdbcb223750d08489bc780", kill_on_drop: false }`
[INFO] [stderr]    Compiling isolate v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `config`
[INFO] [stdout]    --> src/main.rs:144:5
[INFO] [stdout]     |
[INFO] [stdout] 144 |     config: Configuration,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.26s
[INFO] running `Command { std: "docker" "inspect" "1e151338091944d5740c5641ccdb0033d7596d8244bdbcb223750d08489bc780", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e151338091944d5740c5641ccdb0033d7596d8244bdbcb223750d08489bc780", kill_on_drop: false }`
[INFO] [stdout] 1e151338091944d5740c5641ccdb0033d7596d8244bdbcb223750d08489bc780
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1e9863bb9d6cd3f112fcec0931c2380fbbba2da095f57baafcee1b0ea27089d8
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1e9863bb9d6cd3f112fcec0931c2380fbbba2da095f57baafcee1b0ea27089d8", kill_on_drop: false }`
[INFO] [stderr] warning: field is never read: `config`
[INFO] [stderr]    --> src/main.rs:144:5
[INFO] [stderr]     |
[INFO] [stderr] 144 |     config: Configuration,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `isolate` (bin "isolate" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/isolate-7e013bf89b14a559)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1e9863bb9d6cd3f112fcec0931c2380fbbba2da095f57baafcee1b0ea27089d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e9863bb9d6cd3f112fcec0931c2380fbbba2da095f57baafcee1b0ea27089d8", kill_on_drop: false }`
[INFO] [stdout] 1e9863bb9d6cd3f112fcec0931c2380fbbba2da095f57baafcee1b0ea27089d8