[INFO] crate isolate 0.1.2 is already in cache
[INFO] testing isolate-0.1.2 against beta-2020-07-24 for beta-1.46-1
[INFO] extracting crate isolate 0.1.2 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate isolate 0.1.2 on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", 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-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e6cf478eddfd5f862a8632d968b1dc74e8bb3d92f02080e9ec61063ce9c58524
[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" "e6cf478eddfd5f862a8632d968b1dc74e8bb3d92f02080e9ec61063ce9c58524", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e6cf478eddfd5f862a8632d968b1dc74e8bb3d92f02080e9ec61063ce9c58524", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6cf478eddfd5f862a8632d968b1dc74e8bb3d92f02080e9ec61063ce9c58524", kill_on_drop: false }`
[INFO] [stdout] e6cf478eddfd5f862a8632d968b1dc74e8bb3d92f02080e9ec61063ce9c58524
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 045f75b9564602170b423ee834953e48d6fab990dc477004f0b5123364fd447c
[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" "045f75b9564602170b423ee834953e48d6fab990dc477004f0b5123364fd447c", kill_on_drop: false }`
[INFO] [stderr]    Compiling strsim v0.6.0
[INFO] [stderr]    Compiling nix v0.9.0
[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 14.73s
[INFO] running `Command { std: "docker" "inspect" "045f75b9564602170b423ee834953e48d6fab990dc477004f0b5123364fd447c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "045f75b9564602170b423ee834953e48d6fab990dc477004f0b5123364fd447c", kill_on_drop: false }`
[INFO] [stdout] 045f75b9564602170b423ee834953e48d6fab990dc477004f0b5123364fd447c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 84f0e91a54e71f8527f522c8a9c0fb9d842ff7dcdb5bd83c70df503b7daa07e4
[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" "84f0e91a54e71f8527f522c8a9c0fb9d842ff7dcdb5bd83c70df503b7daa07e4", 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 1.27s
[INFO] running `Command { std: "docker" "inspect" "84f0e91a54e71f8527f522c8a9c0fb9d842ff7dcdb5bd83c70df503b7daa07e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84f0e91a54e71f8527f522c8a9c0fb9d842ff7dcdb5bd83c70df503b7daa07e4", kill_on_drop: false }`
[INFO] [stdout] 84f0e91a54e71f8527f522c8a9c0fb9d842ff7dcdb5bd83c70df503b7daa07e4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] eb58b012e5d257d5b133abbfc324edc85af7335d9d46f237fb0fd918dd6d2f6e
[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" "eb58b012e5d257d5b133abbfc324edc85af7335d9d46f237fb0fd918dd6d2f6e", 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: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/isolate-bc31f4e8bc8e9d91
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "eb58b012e5d257d5b133abbfc324edc85af7335d9d46f237fb0fd918dd6d2f6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb58b012e5d257d5b133abbfc324edc85af7335d9d46f237fb0fd918dd6d2f6e", kill_on_drop: false }`
[INFO] [stdout] eb58b012e5d257d5b133abbfc324edc85af7335d9d46f237fb0fd918dd6d2f6e