[INFO] fetching crate poolter 0.1.0...
[INFO] testing poolter-0.1.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate poolter 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate poolter 0.1.0 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate poolter 0.1.0
[INFO] finished tweaking crates.io crate poolter 0.1.0
[INFO] tweaked toml for crates.io crate poolter 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 247f86fc599187ec2e450373b2f9a121f5a7e9b083fb5399907ce064319b5f73
[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" "247f86fc599187ec2e450373b2f9a121f5a7e9b083fb5399907ce064319b5f73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "247f86fc599187ec2e450373b2f9a121f5a7e9b083fb5399907ce064319b5f73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "247f86fc599187ec2e450373b2f9a121f5a7e9b083fb5399907ce064319b5f73", kill_on_drop: false }`
[INFO] [stdout] 247f86fc599187ec2e450373b2f9a121f5a7e9b083fb5399907ce064319b5f73
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 768e17e4007d97cbd2edeb82174b0bd649a6e1326cf0f6303e1aca6e701874e9
[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" "768e17e4007d97cbd2edeb82174b0bd649a6e1326cf0f6303e1aca6e701874e9", kill_on_drop: false }`
[INFO] [stderr]    Compiling poolter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/service.rs:4:25
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub type Callback = Box<Fn() + Send>;
[INFO] [stdout]   |                         ^^^^^^^^^^^ help: use `dyn`: `dyn Fn() + Send`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` 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 0.59s
[INFO] running `Command { std: "docker" "inspect" "768e17e4007d97cbd2edeb82174b0bd649a6e1326cf0f6303e1aca6e701874e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "768e17e4007d97cbd2edeb82174b0bd649a6e1326cf0f6303e1aca6e701874e9", kill_on_drop: false }`
[INFO] [stdout] 768e17e4007d97cbd2edeb82174b0bd649a6e1326cf0f6303e1aca6e701874e9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8dc73292aa5367f99509ceb652727677134fa75ca2c08542a30dd4c18eb937c5
[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" "8dc73292aa5367f99509ceb652727677134fa75ca2c08542a30dd4c18eb937c5", kill_on_drop: false }`
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/service.rs:4:25
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub type Callback = Box<Fn() + Send>;
[INFO] [stdout]   |                         ^^^^^^^^^^^ help: use `dyn`: `dyn Fn() + Send`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling poolter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/service.rs:4:25
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub type Callback = Box<Fn() + Send>;
[INFO] [stdout]   |                         ^^^^^^^^^^^ help: use `dyn`: `dyn Fn() + Send`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` 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 1.39s
[INFO] running `Command { std: "docker" "inspect" "8dc73292aa5367f99509ceb652727677134fa75ca2c08542a30dd4c18eb937c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8dc73292aa5367f99509ceb652727677134fa75ca2c08542a30dd4c18eb937c5", kill_on_drop: false }`
[INFO] [stdout] 8dc73292aa5367f99509ceb652727677134fa75ca2c08542a30dd4c18eb937c5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 99364ebe0508ae274be6544c4be111f49a00c7dccec3149503d842b82410f0f5
[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" "99364ebe0508ae274be6544c4be111f49a00c7dccec3149503d842b82410f0f5", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout] running 1 test
[INFO] [stderr]  --> src/service.rs:4:25
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub type Callback = Box<Fn() + Send>;
[INFO] [stderr]   |                         ^^^^^^^^^^^ help: use `dyn`: `dyn Fn() + Send`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/service.rs:4:25
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub type Callback = Box<Fn() + Send>;
[INFO] [stderr]   |                         ^^^^^^^^^^^ help: use `dyn`: `dyn Fn() + Send`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/poolter-d37de8b450c1ed96
[INFO] [stdout] test concurrent_tasks ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests poolter
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "99364ebe0508ae274be6544c4be111f49a00c7dccec3149503d842b82410f0f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99364ebe0508ae274be6544c4be111f49a00c7dccec3149503d842b82410f0f5", kill_on_drop: false }`
[INFO] [stdout] 99364ebe0508ae274be6544c4be111f49a00c7dccec3149503d842b82410f0f5