[INFO] fetching crate tw-econ 0.4.4...
[INFO] testing tw-econ-0.4.4 against 1.60.0 for beta-1.61-1
[INFO] extracting crate tw-econ 0.4.4 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate tw-econ 0.4.4 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 tw-econ 0.4.4
[INFO] finished tweaking crates.io crate tw-econ 0.4.4
[INFO] tweaked toml for crates.io crate tw-econ 0.4.4 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate crates.io crate tw-econ 0.4.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded const_format v0.2.14
[INFO] [stderr]   Downloaded const_format_proc_macros v0.2.14
[INFO] [stderr]   Downloaded sscanf_macro v0.1.1
[INFO] [stderr]   Downloaded sscanf v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] 5be774d9f4b6df546d038f37cebd118f8b0383c33833c9665e855d4a337a5c6b
[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" "5be774d9f4b6df546d038f37cebd118f8b0383c33833c9665e855d4a337a5c6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5be774d9f4b6df546d038f37cebd118f8b0383c33833c9665e855d4a337a5c6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5be774d9f4b6df546d038f37cebd118f8b0383c33833c9665e855d4a337a5c6b", kill_on_drop: false }`
[INFO] [stdout] 5be774d9f4b6df546d038f37cebd118f8b0383c33833c9665e855d4a337a5c6b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] 559cec40275136b12a7155653b9cd559b94c2eadfe0855191a615f1988f4548a
[INFO] running `Command { std: "docker" "start" "-a" "559cec40275136b12a7155653b9cd559b94c2eadfe0855191a615f1988f4548a", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling futures-core v0.3.15
[INFO] [stderr]    Compiling futures-io v0.3.15
[INFO] [stderr]    Compiling tokio v1.6.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling const_format_proc_macros v0.2.14
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling futures-channel v0.3.15
[INFO] [stderr]    Compiling const_format v0.2.14
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling futures-macro v0.3.15
[INFO] [stderr]    Compiling sscanf_macro v0.1.1
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]    Compiling tokio-macros v1.2.0
[INFO] [stderr]    Compiling futures-util v0.3.15
[INFO] [stderr]    Compiling sscanf v0.1.1
[INFO] [stderr]    Compiling structopt v0.3.21
[INFO] [stderr]    Compiling futures-executor v0.3.15
[INFO] [stderr]    Compiling futures v0.3.15
[INFO] [stderr]    Compiling tw-econ v0.4.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `connect_async`
[INFO] [stdout]    --> src/lib.rs:169:18
[INFO] [stdout]     |
[INFO] [stdout] 169 |     pub async fn connect_async(address: std::net::SocketAddr, 
[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 50.06s
[INFO] running `Command { std: "docker" "inspect" "559cec40275136b12a7155653b9cd559b94c2eadfe0855191a615f1988f4548a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "559cec40275136b12a7155653b9cd559b94c2eadfe0855191a615f1988f4548a", kill_on_drop: false }`
[INFO] [stdout] 559cec40275136b12a7155653b9cd559b94c2eadfe0855191a615f1988f4548a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] b352c972a675a09407b64c0521d34dc5d8a433dde1d800d9aa4c6fff01b9bdbd
[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" "b352c972a675a09407b64c0521d34dc5d8a433dde1d800d9aa4c6fff01b9bdbd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling tw-econ v0.4.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `connect_async`
[INFO] [stdout]    --> src/lib.rs:169:18
[INFO] [stdout]     |
[INFO] [stdout] 169 |     pub async fn connect_async(address: std::net::SocketAddr, 
[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 2.68s
[INFO] running `Command { std: "docker" "inspect" "b352c972a675a09407b64c0521d34dc5d8a433dde1d800d9aa4c6fff01b9bdbd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b352c972a675a09407b64c0521d34dc5d8a433dde1d800d9aa4c6fff01b9bdbd", kill_on_drop: false }`
[INFO] [stdout] b352c972a675a09407b64c0521d34dc5d8a433dde1d800d9aa4c6fff01b9bdbd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f11bfed66d2d7ae74361a29a52105e22975cc012e3962abb72f0295d90c92307
[INFO] running `Command { std: "docker" "start" "-a" "f11bfed66d2d7ae74361a29a52105e22975cc012e3962abb72f0295d90c92307", kill_on_drop: false }`
[INFO] [stderr] warning: associated function is never used: `connect_async`
[INFO] [stderr]    --> src/lib.rs:169:18
[INFO] [stderr]     |
[INFO] [stderr] 169 |     pub async fn connect_async(address: std::net::SocketAddr, 
[INFO] [stderr]     |                  ^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `tw-econ` (bin "tw-econ" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.14s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/tw_econ-66f4c0e048cb8084)
[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] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/tw_econ-e4645813648fd8d1)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests tw-econ
[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] [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" "f11bfed66d2d7ae74361a29a52105e22975cc012e3962abb72f0295d90c92307", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f11bfed66d2d7ae74361a29a52105e22975cc012e3962abb72f0295d90c92307", kill_on_drop: false }`
[INFO] [stdout] f11bfed66d2d7ae74361a29a52105e22975cc012e3962abb72f0295d90c92307